Home

MS2661N Spectrum Analyzer Operation Manual Vol. 1 ANRITSU

1. Peak Next Left Peak Normal Marker gt Threshold Delta Marker Threshold 1 On Off Search Above Dip i Below 1 Dip P Search 1 Searches for minimum Dip level Display Next Dip Line On Off 2 Sets peak search level resolution Disp Line Level 50 00dBm return 2 Resolution 1 23 dB Threshold Marker gt Marker gt Mkr gt CF 12 Mkr gt RLV Makrer gt Mkr Peak Marker gt s Search Step Size Mkr CF Delta Mkr Span Mkr gt RLV Zone Mkr Span CF Step Size return Delta Mkr Span Zone Span Set marker value gt center frequency marker value gt reference level marker value gt CF step size delta marker gt span zone marker gt span etc 4 10 Panel Key Top menu Peak Peak RLV Single Continuous Single User Menu Tree 6 27 Userl User2 User3 Lower menues SECTION 4 SOFT KEY MENU The soft key menu defined by the user is displayed See User Define SECTION 4 SOFT KEY MENU Menu Tree 7 27 Panel Key Top menu Lower menues Measure gt Freg Count Measure 1 Frequency Count On Count 2 Noise Measure 3 C N Ratio Measure Count
2. i H 10MHz Reference Buffered out 9 MG3633A 8 8 3 3 8 0 Coaxial sdaptor SAM connector OUTPUT 500 MHz Coaxial sdaptor Coaxial sdaptor N P SMA J SAM connector Frequency Measurement Accuracy Test 6 21 SECTION 6 PERFORMANCE TESTS 4 Procedure confirm that the Freq reading is 500 MHz 100 Step Procedure 1 Press the Preset key and then Pseset AII key 2 Set the MG3633A to 500 MHz and 10 dBm 3 Set the MS2661N as shown below Center Ereq ie 500 MHz PM 5 2 4 Press the Measure key and set to Frequency Count Press Setup and set Resolution to 1 Hz Then press the Return key and set to Count On 5 Confirm that the FREQ reading at the upper left of the screen is the RF INPUT frequency 500 MHz E 1 Hz or less E 6 Change the counter resolution to 10 Hz and confirm u that the Freq reading is 500 MHz 10 Hz or less 7 Change the counter resolution to 100 Hz and LL m 6 22 Hz or less il dal Change the counter resolution to 1 KHz and HH confirm that the Freq reading is 500 MHz 1 kHz or less CF 500MHz Span 5kHz Frequency Measurement SECTION 6 PERFORMANCE TESTS Amplitude display linearity 1 2 3 Test the error per vertical graduation for the LOG display For the LOG display linearity test that the graduatio
3. Low pass filter Signal generator MG3633A SG RF Input RF OUTPUT Coaxial cable connector Second Harmonic Distortion Test 6 30 4 SECTION 6 PERFORMANCE TESTS Procedure Step Procedure 1 Press the Preset key and then Preset All key 2 Operate AII Cal 3 Set the LPF cut off frequency to approx 12 8 MHz 4 Set the SG output frequency to 10 MHz and the output level to 40 dBm 5 Set the MS2661N as shown below Center Pregunte 10 MHz een 10 kHz Reference Level 40 dBm ALON ALOL MEN 0 dB 6 Adjust the SG output level so that peak of the spectrum waveform is at the REF LEVEL the top horizontal line of the screen 7 Move the marker to the peak of the spectrum waveform and make the marker the delta marker HH 8 Set the center frequency to twice the fundamental wave frequency to display the second harmonic on the screen The delta marker reading indicates the level difference betweeen the fundamental wave and the second harmonic If the level difference is 80 dB or more set the REF LEVEL to 60 dBm Confirm that the set value is 0 dB 6 31 SECTION 6 PERFORMANCE TESTS 6 32 Step Procedure 9 Set the LPF cut off frequency to approx 1 2 GHz 10 Set the SG as follows OUTPUT EREQ nnm 900 MHz OUTPUT LEVEL 40 dBm 11 Set MS2661N as follows Center Fred ensure 900
4. 7 4 Recommended storage precautions 7 4 Repacking and Transportation 7 5 2225 12 tao see acia listan 7 5 Transportation 7 5 7 1 7 2 Blank SECTION 7 STORAGE AND TRANSPORTATION SECTION 7 STORAGE AND TRANSPORTATION Cleaning Cabinet Always turn the MS2661N POWER switch OFF and disconnect the power plug from the ac power inlet before cleaning the cabinet To clean the external cabinet e Use a soft dry cloth for wiping off e Usea cloth moistened with diluted neutral cleaning liquid if the instrument is very dirty or before long term storage After insuring that the cabinet has been thoroughly dried use a soft dry cloth for wiping off If loose screws are found tighten them with the appropriate tools CAUTION N Never use benzene thinner or alcohol to clean the external cabinet it may damage the coationg or cause deformation or discoloration SECTION 7 STORAGE AND TRANSPORTATION Storage Precautions This paragraph describes the precautions to take for long term storage of the MS2661N SPECTRUM ANALYZER Precautions before storage 1 Before storage wipe dust finger marks and other dirt off the MS2661N 2 Avoid storing the MS2661N where 1 It may be exposed to direct sunlight or high dust levels 2 It may be expo
5. 6 6 Reference oscillator frequency stability 6 6 Center frequency readout 6 9 Frequency span readout 6 12 Resolution bandwidth 6 15 O 6 19 Frequency measurement 6 21 Amplitude display linearity senseri air nte terea pite tent 6 23 Frequency coo m 6 27 scesgeMireu 6 30 Input attenuator switching error 6 33 Sweep time and time span accuracy 6 36 Tracking generator output level flatness sse 6 40 Service 6 43 6 2 Blank SECTION 6 PERFORMANCE TESTS SECTION 6 PERFORMANCE TESTS Requirement for Performance Tests Performance tests are used as preventive maintenance to prevent degradation of the MS2661N performance before it occurs Use the performance tests whenever necessary such as at acceptance and periodic inspection of the MS2661N and to verify performance after repair Execute the performance tests listed be
6. A lt B A B A gt B A BG A lt BG A BG A gt BG Sweep Simultaneously display two waveforms namely Trace and Trace or Trace A and Trace BG peripheral spectrum containing Trace A The large display is Main Trace and the small one is Sub Trace select which to display as Main Trace or Sub Trace Sweep Control Set Stop Continuous Restart for sweep and Stop Write for Sub Trace gt Contl Control Sub Trace Write Sub Trace View Stop Continuous Restart return 1 Displays two traces A and B simultaneously at top and bottom of screen The trace B display is the larger at this time 4 21 SECTION 4 SOFT KEY MENU Menu Tree 17 27 Panel Key Top menu Lower menues Time Trace Time Set to the zero span time domain display Set Time Span Trigger Trigger Delay Time Source Storage Detection and FM Monitor On Off and select Expand 10 0 ms waveform Time Span 200 us Trigger Freerun Triggered I source Same as Trigger Source menu in Trig Gate key Trigger Source nn Storage Same as Strage Mode menu in A B key Storage t Detection Same as Det Mode menu in A B key Detection Trace Time FM Monitor gt Expand 1 Zooms in time domain waveform dis 1 Expand Zone Start Point play 1
7. SECTION 6 PERFORMANCE TESTS Sideband noise When the resolution bandwidth is set to a fixed value and a signal that has far less sideband noise level than the equipment to be tested MS2661N is input check the level of the noise as compared to the peak signal dBc at the specified frequency away from the peak Since the average value is measured for noise level use a video filter for measurement ESE This sideband noise is spectrum response which is modulated by the internal noise of the MS2661N If this response is large the actual filter envelope is masked by the Sideband noise noise as shown which makes measurement impossible _ AA LUIS E pum IS E E E A MN Actual filter envelop 1 Specifications Sideband noise lt 100 dBc Hz Frequency 1 GHz 30 kHz offset RBW kHz 2 Test instruments Signal generator MG3633A Synthesized Signal Generator 3 Setup Anritsum 5266 5 Coaxial cable BNC connector Synthesized signal generator MG3633A SG 10MHz STD Buff Out RF Input RF OUTPUT Coaxial cable N type connector Sideband Noise Test SECTION 6 PERFORMANCE TESTS 4 6 20 Procedure Step Procedure 1 Press the Preset key and then Preset AII key 2 Operate AII Cal 3 Set the MG3633A output to 1000
8. Input a title to display on the screen Title Title Comment Title Edit Title gt lt Edit Screen gt 4 28 SECTION 4 SOFT KEY MENU Menu Tree 24 27 Panel Key Top menu Lower menues Mem Card Mem Card Directory Directory gt File Ope Trace 4 Display Directory 1 Format _ Next Correction Dir Disp Detail Outline Mask Template Delete Define Menus File Select Protection Media return return 1111 a Format 1 Pirectory b E Mem Card 1 1 Formats memory card Slot Mem Card 2 Set Directory Format and Media of the 1 Ower Slot memory card Slot Directory Select a directory to display from Trace Correction Mask Template and Define Menus File Ope Select an item from Display return Directory Dir Disp Delete and File Protection return return 2 449 PTA bon Program ro ran Run PTA PTA Prog List PTA EE F1 Library Stop Yes Cursor Up F2 Cont No Cursor Down F3 Reset Load F4 off Run F5 etc E etc I Y 2 Next page 13 Set PTA personal test automation that can build an auto measurement system without requiring external controllers PTA
9. 18808 Power meter gt m 40 10MHz STD Buff Out MG3633A ML4803A RF Input Coaxial adaptor Coaxial adaptor N P SMA J N J N J Power sensor Coaxial cable SMA connector Frequency Response Test 4 Precautions This test should be performed after allowing the instrument to warm up for 60 minutes or more b Procedure 6 27 SECTION 6 PERFORMANCE TESTS 8 b 6 28 Calibration of signal generator MG3633A Step Procedure 1 Set the MG3633A as shown below OUTPUT FREQ conoci 100 MHz OUTPUT LEVEL au 10 dBm 2 Connect the MG3633A output to the power sensor input with a coaxial cable 3 Read the power meter display 4 Change the MG3633A output frequency as shown in the tables on the next page and read the power meter display with level at 100 MHz as reference This data is the calibration data Readout of measured amplitude deviation frequency response Step Procedure 1 Connect the MG3633A OUTPUT to MS2661N RF Input with a coaxial cable 2 Press the MS2661N Preset key and then Preset All key 3 Perform all calibration 4 Set the MS2661N as shown below Center Prats 100 MHz 200 kHz Reference Level 10 dBm 5 Press the gt key 6 Set the marker mode to delta marker 7 Set the MS2661N center frequency as shown in the tables on the next page th
10. N P 5W 5D 2W N P 5W BNC P RG 55 U N P 5W Meets PCMCIA Ver 2 0 TypeI Meets PCMCIA Ver 2 0 TypeI Meets PCMCIA Ver 2 0 TypeI Meets PCMCIA Ver 2 0 TypeI 3 4MW4U With casters Without casters DC to 1000 MHz 50 Q N For MP612A 50 9 kHz to 3 GHz with DC block capacitor allowable voltage 100 V 10 to 1200 MHz transformer type 30 dB 10 W DC to 12 4 GHz 30 dB 10 W DC to 9 GHz 40 dB DC to 1700 MHz 30 dB 0 8 to 3 GHz 25 to 500 MHz 50 Q 25 to 1000 MHz 50 Q N 60 MHz band 150 MHz band 250 MHz band 400 MHz band 27 MHz band 408JE 101 408JE 102 For IBM PC AT or compatible D sub 9 pins For Printer D sub 25 pins 1 Please specify the model order number name and quantity when ordering 1 6 SECTION 1 GENERAL Specifications Frequency range MS2661N specifications are listed in the following table 100 Hz to 3 0 GHz Indicated frequency Frequency Resolution A digit in 5 hundredths of span 1 Hz min but fractions are rounded Accuracy Indicated frequency x reference frequncy accuracy resolution band width x 15 span x 5 50 Hz accuracy Marker frequency Resolution 0 296 of span fractions are rounded Accuracy Normal marker is identical to the indicated frequency accuracy Delta marker is identical to the span accuracy Frequency measurement Resolution 1 Hz 10 Hz 100 Hz and 1 kHz Accuracy Indicated frequency x re
11. Programming Remote Control Reprogramming 2 16 The software of the MS2661N is stored a ROM read only memory installed when the MS2661N is shipped from the factory Therefore it is unnecessary to load the software in the MS2661N Also the frequency response of each the MS2661N is checked when the equipment is shipped from the factory and the correction values are written into the ROM Therefore it is unnecessary to load the correction values The data and program shown below can be set to correct the measured values and perform the automated measurement For details refer to the following sections To set the frequency response correction factor See Sections 2 3 4 in the Operation Manual Vol 2 set the template mask limitation line See Section 13 in the Operation Manual Vol 2 To register data in the user defined menu See Section 12 in the Operation Manual Vol 2 To load and execute the See the PTA control part in the Operation Manual personal test automation program Vol 3 SECTION 2 PREPARATIONS BEFORE USE Power off Press the power switch on the front panel for one second or more while the power is on to set the MS2661N in standby mode The ON indicator goes off the stby indicator comes on and the screen becomes blank Stby On When the MS2661N will be reused in the same environment leave the MS2661N in the standby mode If
12. 2 Test instruments e Signal generator MG3633A Wiltron 6769A 3 Setup Anritsum 52661 00 Signal generator 0 6769 i 09890094 MG3633A RF OUTPUT RF OUTPUT Coaxial adaptor Coaxial cable N P SMA J Only when 6769A is used N type connector When MG3633A is used SMA connector When 6769A is used Sweep Time and Time Span Accuracy 6 36 4 Procedure Sweep Time Step SECTION 6 PERFORMANCE TESTS Procedure 1 2 10 11 12 Press the MS2661N Preset key and then Preset All key Operate All Cal Connect the MG3633A signal generator with the MS2661N as shown in the setup diagram Set the MS2661N as shown below CENTER FREQ 100 MHz SPAN nassen 100 Hz SWP 20 msec 1 MHz VBW ia 1 MHz Set the MG3633A as shown below OUTPUT FREQ 100 MHz OUTPUT LEVEL 16 dBm MODULATION AM INT 9096 MODULATION FREQ 1 kHz Press the gt RLV key Set the MS2661N scale to Linear Press the Single key then wait until a single sweep execution is completed Set the MS2661N marker zone width to 5 Hz Zone Width 5 Hz Move the MS2661N marker to the left of the screen using the knob and set the zone marke
13. VS 1 2 0 1 1 O 2 91 01 T7H 9 q i 4 77 O mo ng ul 015 APPENDIX B BLOCK DIAGRAM This appendix shows the Block Diagram of the MS2661N B 1 B 2 Blank KEY BORRD 170 INAS 9150 INNOD 898 JMS e sad T e a fu 2 e i L3 Ao HH R SUPPLY P WE NI 9181 1X3 2H8 100 9181 NI NI O301A OPTION BASE 18Hz RBW TRIG 41 H BSr NI 3 100 1905 NU ZHHRT 170 35 110 31 NI ZHBI 100 4 2457 170 290 al INQ 170 NI 2HHL NI 294987 NI 29481 119 HW981 6 192 3 190 119 N H4981 76 100 2HH001 36Hz CONVERTER 100 al NU ZHAPI 11 N ZHAI NI 29481 100 01 351 N ANQO NI NGOS TRRCKING GENERRTOR NI 29881 NI EXT REF BUFFERED OUT EXT REF 33438987 Signal Flowchart Flowchart Signal B 3 QA SQESEMEE UP18B J X9O g 1924jeuy 429946 199051 1 0110 508955181 2H381 2001 ZHWL LE 8 L HAL LE1 8 LOL ueds 881 ZHWOP OT 19154245181 2 ZHWISNUIS 7THWI lt
14. When an abnormality occurs again if the voltage and current rating of the fuses is incorrect the fuses may not blow with a consequent risk of damage to the equipment by fire 2 18 SECTION 2 PREPARATIONS BEFORE USE After performing the safety procedures described on the preceding page replace the fuses according to the following procedure Step Procedure 1 Set the front panel Power switch to Stby and the rear panel Line switch to OFF Then remove the power cord from the power supply outlet 2 Use a flat bladed screwdriver to turn the fuse holder cap counterclockwise The cap and fuse are removed as a unit from the fuse holder 3 Remove the fuse from the fuse cap and replace it with a spare fuse The direction does not matter 4 Return the fuse cap with fuse to the fuse holder and fasten it by turning it clockwise with the flat bladed screwdriver Off Freq Adj Line Input 300VA Max O 47 5 63Hz 85 132V T 5A WARNING 170 250 T 5A Fuse holders 2 19 SECTION 2 PREPARATIONS BEFORE USE Blank 2 20 SECTION 3 PANEL DESCRIPTION In thi s section the front and rear panels are described about the case in which all the options are attached to TABLE OF CONTENTS Table of Front Panel Features 3 3 Description of Screen Display 3 9 3 1 3 2 Blank SECTION PANEL DESCRIPTION SECTION 3 PANEL DESCRIPTION In this section the fr
15. 4 Set the signal generator MG3633A as shown below OUTPUT FREQ 100 MHz OUTPUT LEVEL 10 dBm 5 Set the amount of attenuation of the attenuator MN510C to 0 dB 6 Connect the output of the attenuator MN510C to the power meter via coaxial cable 7 Adjust the signal generator output level so that the indicated value of the power meter is 10 0 dBm 8 Connect the coaxial cable of the attenuator output to the MS2661N RF Input 9 Press the MS2661N gt CF key 10 Set the MS2661N reference level to 10 dBm and attenuation to 60 dB 11 Read the marker level 12 Set Reference Level ATT of this device and the external ATT as shown in the table on the next page and read the level of each marker 13 Find the error by the formula below Error marker level value Reference Level attenuator calibration value 14 Find the deviation by the formula below Deviation Error error when at 10 dB Confirm that the deviation is within 2 0 dB MS2661N setting REF LEVEL ATT MN510C setting Calibration value of attenuator SECTION 6 PERFORMANCE TESTS Marker level value Deviation dB dB dB dB dB O dB reference dB 6 35 SECTION 6 PERFORMANCE TESTS Sweep time and time span accuracy 1 Specifications Sweeptime accuracy 1546 20 msec to 100 sec e Time span accuracy 190 100usec to 100sec
16. 960 MHz 1040 MHz 95 MHz 105 MHz 1 8 GHz 280 MHz 1 72 GHz 1 71 GHz 1 89 GHz SECTION 6 PERFORMANCE TESTS Resolution bandwidth RBW If there are two input signals with the frequency difference corresponding to 3 dB bandwidth of IF final stage these signals can be resolved as two spectrum waveforms This is called the resolution bandwidth 3 dB bandwidth Amplitude 60 dB bandwidth Center frequency Frequency 1 Specifications Resolution bandwidth accuracy 20 RBW 30 Hz to 300 kHz 30 RBW 10 Hz 25 RBW 1 MHz 2 Test instrument Synthesized signal generator MG3633A 6 15 SECTION 6 PERFORMANCE TESTS 3 Setup OCCBW 30 6kHz CTR 99 9996MHz IN O 2 AL or m N Free zu Buff Out AA Resolution bandwidth Coaxial cable gt BNC connector Coaxial cable gt N type connector REF IN MG3633A OUTPUT 100 MHz Resolution Bandwidth Test 6 16 4 Procedure Resolution bandwidth accuracy Step SECTION 6 PERFORMANCE TESTS Procedure 1 2 10 Press the Preset key and then Preset All key Perform all calibration ALL CAL Refer to SECTION 8 in the Detailed Operating Instruc tion Part of the separate operation manual Se
17. Connect the signals to be measured to the RF connector using a coaxial cable 70561 N P 5W 5D2W N P 5W RF Input 500 Fully insert the cable jack into the RF Input connector Frequency range 100 Hz to 3 GHz Measurement level Apply the measured signal with average noise level of up to 30 dBm to the N type connector RF Input of 50 Q input impedance CAUTION N The input circuit is not protected against excessive power If a signal exceeding 30 dBm and OV DC between measured terminal and ground is applied the input attenuator and input mixer may be burned N isa warning mark to prevent such damage 2 13 SECTION 2 PREPARATIONS BEFORE USE Internal Calibration Perform internal calibration to maintain the measurement accuracy of the MS2661N within the specifications Immediately after the power on the performance is unstable due to internal temperature variations Wait for about 20 minutes or more after the power on then perform All Cal Cal Shift gt 0 gt Cal Cal All Cal Now Calibrating Level Cal Level Cal Freq Cal The Cal screen is displayed during a FM Cal calibration Internal calibration takes about four minutes If the MS2661N is used in a thermally stable environment such as an office after the first internal calibration there is no need to perform internal calibration repeatedly If there is a
18. Directory Mem Card 2 Next Lower Dir Disp L Slot Detail s Outline Set Define Edit Initialize and Load Save Save E Def Menu 1 Define Menus Select one from Source Menu File Select Source Library Destination Menu etc and set jn Load Save Definition Delete for the user menu Media 2 Edit Menu Select a source and edit Menu Title return return 4 31 SECTION 4 SOFT KEY MENU Menu Tree 27 27 Panel Key Top menu Preset Preset Preset All Preset Sweep controll Preset Trace Parameters Preset Level Parameters Preset Freg Time Parameters Hold Local 4 32 Lower menues Initialize measurement parameters Select one from All Sweep Trace Level and Frequ Time SECTION 5 BASIC OPERATION PROCEDURE TABLE OF CONTENTS 5 3 5 3 5 4 5 5 5 9 5 2 Blank SECTION 5 BASIC OPERATION PROCEDURE SECTION 5 BASIC OPERATION PROCEDURE The basic operation procedure of this equipment are Actual operations explained here The operations are listed on the right 1 Signal display Also the explanation willl advance assuming that a 1 Turn the power on 500 MHz signal is applied to the input connector 2 set the signal to the center of the screen and Please read this manual while operating this 3 enlarge and display the signal equi
19. Level Pre Ampl Abs Rel Manual Impedance Trnsformer return return Correction po return 2 I a Trnsformer return Trnsformer MA1621A On Off 1 Sets correction frequency response characteristics correction function Correction Select Setup Load em Card 1 2 The menu with mark cannot be used Mm Correction Corr 1 Corr Set Upper On Off Slot on the MS2661N Display em Card 2 Select Corr 2 Directory Lower Corr Next Slot Dir Disp s Corr 3 Detail Set items along the vertical axis of the screen return Save including reference level Peak gt RLV reference Ex Gane St level offset measurement level unit Log Lin scale gt Setup Corr 5 Load Save switching reference level step size display line iai attenuator pre amplifier On Off 75 impedance return return return return transformer frequency response correction etc SECTION 4 SOFT KEY MENU Menu Tree 3 27 Panel Key Top menu Lower menues m Set the manual auto of resolution bandwidth and auto RBW VBW and SWP only or all auto Auto on 1 Sets RBW VBW Sweep Time Atten all to Auto 1 All Auto VEW Set the manual auto of video bandwidth and auto RBW VBW SWP Manual only or all auto VBW 32 Sets ratio
20. Trig Slope Rise Fall reteun High Middle Low Trig Ext 10 to 10V TEL Trig Level 5 0V Trig Slope Rise Fall reteun 1 Trigger Source Select a trigger source from Video Wide IF Video External and Line 2 Gete Setup Set gate conditions including Gate Delay Gate Length Gate End and Gate Trig Source Wide IF Video External Trig Slope Rise Fall return aide IF Trig Level High Trig Slope Rise Fall reteun Y Trig Ext 10 to 10V TTL Trig Level 5 0V Trig Slope Rise Fall reteun Set gate functions for controlling the sweep start trigger and the writing of waveform data Set the trigger mode trigger source trace time delay time and time span Select On Off Stop and Restart of Gate Sweep 4 23 SECTION 4 SOFT KEY MENU Menu Tree 19 27 Panel Key Top menu Lower menues TV Monitor Trig Gate 4 24 Menu Tree 20 27 SECTION 4 SOFT KEY MENU Panel Key Top menu Lower menues Copy Copy Cont Copy Copy Cont Printer Printer Plotter HP2225 y Plotter _ Hl BMP file To MemCard VP 600 HP GL ESC P L GP GL Paper Feed 5 Paper Size Stop Print Magnify Location Plot 1x2 Rocation Printer Reset Address Item l 1 18 __ Plotter Copy Cont return Address 18 Pr
21. 15 SECTION 4 SOFT KEY MENU Menu Tree 11 27 Panel Key Top menu Lower menues Previous Page gt Burst Pwr Execute Start Point 100 Stop Point 100 return 4 16 SECTION 4 SOFT KEY MENU Menu Tree 12 27 Panel Key Top menu Lower menues Recall Recall Recall 1 Recall ABCDEFG Recall 7 Recall ABCDEFG Recall Recall Recall 2 from Recall Recall 8 Int Regstr from A Display Mem Card Recall 3 1 Directory Display Recall 9 Next Directory Next Recall 4 po Dir Disp Recall 10 Detail Outline Recall 5 Recall 11 Recall 6 gt Media Recall 12 Recall Mem Card 1 Media item 0 9 Recall All Slot 121 Items Recall Trace amp Mem Card 2 13 Items Parameter Lower I I 4 slot All T amp P View Parameter Parameter except Ref Level return return Read out trace waveform parameters from the internal memory or memory card Select recall addresses and media items and display file directories 1 Displays list of internal register directories 2 Specifies items to be recalled trace waveform parameter etc 4 17 SECTION 4 SOFT KEY MENU Menu Tree 13 27 Panel Key Top menu Lower menues Save m Save tr
22. 3004 130 NG110Y 538 01 9
23. L vi 0c A0 8 02 9 u 11 SAH 30 A0 2 9 2 00 Xx ugpoe 506 OL 506 indui Ju preg Aue ED O e loD way 19 Mau uonoutJ eni 5 5 AL C 9 98v av e S q 5 ainseayy EE ER EE auyad Snes mr yea ed 25 ueds DIN TOME dwy ba14 y E nuayy O uo 7465 juo 4409 195014 ZHO ZHOOT JozAppuy NI99ZSW MNSIJUY 61 81 2 91 3 6 SECTION PANEL DESCRIPTION Blank 3 7 SECTION 3 PANEL DESCRIPTION 3 8 No Panel Making Explanation of Function 50 Fan This is the cooling fan for ventilating internally generated heat Leave a clearance of at least 10 cm around the fan 51 10 MHz STD This is the input connector for an external reference crystal oscillator When an external reference signal is input the equipment switches automatically from the internal signal to the external signal 55 Off On This is the AC line power switch 56 Inlet This is t
24. MHz and 0 dBm 4 Set the MS2651A MS2661A as shown below Center ederet 1 000 030 GHz anes 75 kHz Reference Level 0 dBm Alen NE 10 dB RBW zu emailen kHz 10 Hz DET MODE 5 Press the Peak Search key to search for a peak point so that the peak point on the signal trace is included in the zone marker 6 Press gt key to match the peak of the signal trace to the top line REF LEVEL on the screen 7 After pressing the Measure key select C N Ratio Measure 8 Press the Meas On key to start C N measurement 9 Set Zone Width of Marker to Spot 10 Press the Marker key then turn the rotary knob Sideband Noise Measurement to move the zone marker to the right so that the zone center frequency is 30 0 kHz 11 Make sure that the C N value is 100 dBc Hz or less SECTION 6 PERFORMANCE TESTS Frequency measurement accuracy Set the marker point to the position at least 20 dB higher than the noise or adjacent interference signal to operate the built in counter Option 03 with the higher S N signal and test the frequency measurement accuracy using Count On mode This test cannot be performed without Option 03 1 Specifications e Accuracy lt Readout frequency x reference oscillator accuracy 1 count e Resolution 1 Hz 10 Hz 100 Hz kHz 2 Test instrument e Signal generator MG3633 A 3 Setup Anritsum MS2661N
25. MK 00 216 9 REY 10 RB ME 1OKH 499 Span 5 Fig 5 9 MK Rs SOO 001 OMH 16 47c6m 10 ODcdEm RB 10kH WE 1 1 x Loo CF 500 001 OMH Span 5 Fig 5 10 SECTION 5 BASIC OPERATION PROCEDURE Advanced operation memo It is convenient that the page can also be turned over by repeatedly pressing the panel key This method is used when key s such as Measure key has a number of pages Besides the Freq Ampl and Marker related keys do not turn over the page by repeatedly pressing the panel key For these keys because the first page is important specially it should always be displayed when the panel key is pressed When the soft key menu with is pressed the lower menu of function related to the menu is further displayed In this case as shown in the figure on the left the thick line is displayed at the left of the soft key menu This indicates that the lower menu is displayed The page opened by pressing the soft key can return to the preceding page by the return key Besides it can be checked that which soft key menu was pressed previously to open the curre
26. Off CountSetup Setup Resolution 1kHz Off return 100Hz ja 4 Noise Meas 10Hz Meas On 1Hz return Off return Won Meas Meas On Perform measurement according to various applications 1 Frequency Count Measure marker frequency with Off a high resolution Select resolution from 1 kHz 100 Hz 10 Hz and 1 Hz 2 Noise Measure Measure the noise power within zone marker 3 C N Ratio Measure Measure the ratio of carrier signal and noise power Reference marker of the delta marker shall be set to the carrier and marker s zone width specifies the power measured 4 12 Menu Tree 8 27 SECTION 4 SOFT KEY MENU Panel Key Top menu Lower menues Measure gt Occ BW 4 Occ BW Execute Measure 5 Adj ch pwr Measure 6 Mask Setup oft return 12 Next Page j ch Pwr Execute Ch Sepa 1 12 5 kHz Ch Sepa 2 25 0 kHz Ch BW 8 5 kHz e B Setup return 4 Occ BW Measure Measure the occupied bandwidth Select the XdB DOWN or N of POWER mode 5 Adj ch pwr Measure Measure leak power from adjacent channels Select Channel Separate Channel Bandwidth and Measurement Mode Method On Off of ACP Graph On Off of Channel Center Line and On Off of Channel BW Line Upper Channel Lower Channel or Both Channel etc 6 Mask Set Standard Line of the frequency domain and judge Good NG in r
27. Program Select one from Run Stop Cont Reset Prog List Load etc PTA Library Select one from Display Run for the library program and Load Check for the library file 4 29 SECTION 4 SOFT KEY MENU Menu Tree 25 27 Panel Key Top menu Lower menues Previous page J Lib gt Lib Memory ib Library 4 Lib Exec Memory Cursor m Run Library File Cursor t Down Execute Cont Library Reset Page Remove return return etc Remove Yes Lib File Cursor Up No Cursor Down Load File Page Check File Check File Library Page return return 4 30 SECTION 4 SOFT KEY MENU Menu Tree 26 27 Panel Key Top menu Lower menues Define Define gt Def Menus 1 Define Select M Lib Pram Menus Source Lib Prgm Up 2 Edit Select Menu Source Menu Down Select Dest E Menu Next Page Initialize Menus Set source into Dest Load Save Def Files Delete Dest return return Edit Menu Select Source _ amp lt Title edit screen Edit F key Menu x Title edit screen Edit enu Title 4 Initialize return Yes Y Def Files Media Def Menu y Card 1 File Upper Display No Slot
28. big change in the temperature perform an internal calibration SECTION 2 PREPARATIONS BEFORE USE Using the Memory Card The save recall functions can be used to save recall parameter and waveform data to from the memory card See para 1 3 for the memory card to be used When a new memory card used to save any file format it beforehand to MS DOS When saving data to a memory card confirm that the write protect switch of the card is set at the NOT PROTECTED side and then install it to the MS2661N For the setting method see the operation manual of the card Installing Memory Card Install the memory card to the MS2661N with the cutout of the card at the position as shown below Two card can be installed at the upper and lower sides Memory Card aT A Cutout MC Removing Memory Card Push the left eject button to remove the memory card at the upper side Push the right eject button to remove the memory card at the lower side Replacing Battery of Memory Card Memory card has a battery When the battery life ends the saved data is erased Replace the battery before the life end For the battery life and replacing method see the operation manual of the card 2 15 SECTION 2 PREPARATIONS BEFORE USE Using the RS 232C Interface See Section 2 in the Operation Manual Vol 3 Programming Remote Control Using the GPIB Interface See Section 2 in the Operation Manual Vol 3
29. following three methods to input numeric tart Fred values to parameters are provided direct input by Sto _ Frea the ten key pad numeric keys up down keys Peak CF and rotary knob Auto Tune tep ize SOOMH 1 TI I Fig 5 4 5 4 SECTION 5 BASIC OPERATION PROCEDURE Enlarge and display the signal Press Span key then press the V down key several times to enlarge the signal display MER SOOMH 216 62dBm REY 10 RB 1MH YB 1 1B Span Span Full Span Zero Span Scroli gt lt Scroll CF 300MH Span 1 S0GH Fig 5 5 SECTION 5 BASIC OPERATION PROCEDURE Marker Operation Here checks that the signal frequency and level are displayed in a marker display area The zone marker automatically fetches the highest level signal within the zone and displays the frequency and level Soc 001 OMH Span 0 16 9 RB RLV 10 1 Span 1 0 Full Span Freg L zu Zero Span ee Scrol x 5croll 500 DODOMH Span 5SO00KH Fig 5 6 To check Marker CF function sh
30. inserted on all sides of the equipment 4 Use enough shock absorbent material to protect the MS2661N from shock during transportation and to prevent it from moving in the container 5 Secure the container with packing straps adhesive tape or bands Transportation Do not subject the MS2661N to severe vibration during transport It should be transported under the storage conditions recommended in the previous page 7 5 SECTION 7 STORAGE AND TRANSPORTATION Blank APPENDIXES TABLE OF CONTENTS APPENDIX A FRONT AND REAR PANEL LAYOUT A 1 APPENDIX B BLOCK DIAGRAM B 1 App i Blank App ii APPENDIX FRONT AND REAR PANEL LAYOUT This appendix shows the front and rear panel layouts A 1 2 Blank 29 AO ugpo24 SAY WV 30 AO ZHOS ZHOOL DEM 005 nd no 91 BOS Indu yy CJ G9 OOOO ually daams MEA Mad J9 UY pJD 02 V 5 Polon p09 Asoway 10 JUN pajdno 5 2900 ue s c punog das somomw AL awj y 9g v g v m em 914 4405 y 32 snonuijuo E 0301 oO 3100 2 v NFIITSN 392 ppuy 2995 GV 23 LHS 55 JO4 ONUDN 0 Jajay 8149 nm 9 A01 291 3129 64 1
31. lt 85 dBm at 500 Hz to 200 kHz 0 dB input attenuator Reference level Setting range LOG 100 to 30 dBm or equivalent level LIN 224 uV to 7 07V Unit LOG dBm dBuV dBmV dBuV emf W LIN V Input attenuator setting range 0 to 70 dB 10 dB step Can be set manually or automatically coupled with reference level Input attenuator switching deviation 2 0 dB 10 to 60 dB referred to the attenuator of 10 dB Frequency response 1 5 dB At 10 to 60dB input attenuator Screen display Graticule 10 div during single scale LOG div 10 dB 5 dB 2 dB 1 dB LIN div 10 5 2 1 Linearity After calibration LOG 0 5 dB 0 to 20 dB resolution bandwidth lt 1 MHz 1 dB 0 to 70 dB resolution bandwidth lt 100 kHz 1 5 dB 0 to 85 dB resolution bandwidth lt 10 kHz Marker level resolution LOG 0 1 dB LIN 0 296 compared to reference level Spurious response Second harmonic distortion lt 60 at 100 Hz to 900 MHz input frequencies mixer input level 40 dBm Two signal third intermodulation distortion At two signal frequency difference of 2 50 kHz and mixer input level of 30 dBm 64 dBc at 100 Hz to 10 MHz input frequency 70 at 10 MHz to 3 0 GHz input frequency lt lt 1 dB gain compression At input level to mixer 2 5 Tracking Generator 11 Mixer input
32. not accept liability for equipment faults due to unforeseen and unusual circumstances nor for faults due to mishandling by the customer Anritsu Corporation Contact If this equipment develops a fault contact Anritsu Service and Sales offices at the address at the end of paper edition manual or the separate file of CD edition manual vii viii To prevent malfunction caused by accidental touching the front power switch of this equipment turns on the power if it is pressed continuously for about one second in the standby state If the switch is pressed continuously for one second in the power on state the equipment enters the standby state In the power on state if the power plug is removed from the outlet then reinserted into it the power will not be turned Also if the lines is disconnected due to momentary power supply interruption or power failure the power will not be turned on enters the standby state even if the line is recovered This is because this equipment enters the standby state and prevents incorrect data from being acquired when the line has to be disconnected and reconnected For example if the sweep time is 1 000 seconds and data acquisition requires a long time momentary power supply interruption power failure might occur during measurement and the line could be recov ered automatically to power on In such a case the equipment may mistake incorrect data for correct data without recogn
33. of VBW to RBW when VBW is Auto Auto Filter Off VB RB 2 Ratio 1 0 Sweep Sweep Time mir RB VB SWT Manual Auto All Auto Auto Set the manual auto of sweep time and auto RBW VBW and SWP only or all auto IRB VB SWT Auto All Auto Atten 2 Set the manual auto of the input attenuator On Off of the pre amplifier and Manual all auto Auto Pre Ampl The menu with mark cannot be used on the MS2661N On Off All Auto SECTION 4 SOFT KEY MENU Menu Tree 4 27 Panel Key Top menu Lower menues Marker Set the selection of normal delta no marker zone marker width marker marker search mode display line marker tracking On Off zone sweep On Normal Marker Off etc Delta 1 Selects whether to search for maximum Peak or minimum Dip Marker value in zone marker Marker 2 Toggles zone sweep On Off Usually the zone sweep is Off At On off gi the sweep time is reduced by sweeping only the zone specified by the zone marker p Zone Width Zone Width Spot Marker gt Marker gt 1Div Mkr gt CF all 1 Mkr Func 2Div Mkr gt RLV Marker 1 Search Mkr Peak Dip 5Div gt CF Step Size 10Div Delta Mkr gt Span gt Disp Line Display Display Line return Zone Line Span Off Disp Line 9 return L
34. symbol However if any not supported function soft key in an Option is pressed an error message is displayed 4 When the Return key is pressed at a lower menu the next higher menu is returned 5 Menus with more than six items are split into several pages 6 The menu page construction and currently displayed page are indicated in the lower part of the menu To move to the next page press the More key 7 Panel keys and soft keys prefixed by a sharp symbol at the left of the menu frame give an outline explanation of the function 8 The menu with mark cannot be used on the MS2661N 4 3 SECTION 4 SOFT KEY MENU Soft key Menu List Menu Menu Tree page 28 Menu Menu Tree page 28 A B A BG 16 H Hold Count 15 A Time 17 Impedance 2 ACP Setupl 8 Initialize 27 ACP Setup2 8 Interface 24 Ajd ch Pwr 8 Item 12 20 Amplitude 2 L Lib Exec 26 Attenuator 2 3 Lib File 26 Avg Count 15 Lib Memory 26 B Burst Pwr 11 Lib Prgm 27 C C N Meas Lib Remove 26 Cal 22 Lin Scale 2 Change Clr 21 Line 9 10 Check File 26 Load Save 9 10 Copy Cont 20 Location 20 Copy from 21 Log Scale 2 Correction Lvl Offset 2 CountSetup M Manual Set 4 D Def Files 27 Marker 4 Def Menues 27 Marker gt 4 5 Define 27 Mask Meas 9 Define Clr 21 Measure 7 Detection 15 17 Media 25 277 Dip 5 Media 2 9 10 Directory 25 Mem Card 25 Disp Line 2 4 Mkr List 4 Display 21 Move Mask 9 E Edit Menue 27 Move Temp 10 Expand 17 Mu
35. the center frequency and span according to the combinations shown in the following table Center frequency display accuracy test Signal generator Center Span Center frequency frequency frequency Minimum value Maker value Maximam value 10 kHz RBW 100 Hz 200 kHz RBW 3 kHz 100 MHz RBW 300 kHz 499 999 46 499 989 525 494 940 00 500 000 54 500 010 475 505 060 00 6 11 SECTION 6 PERFORMANCE TESTS Frequency span readout accuracy Using the setup shown in the figure below set the frequencies corresponding the 1st and 9th division from the left side of the screen scale with the SG The frequency difference between the peak levels at the 1st and 9th divisions is equal to the frequency span x 0 8 1 Specifications Frequency span accuracy 5 2 Test instrument e Synthesized signal generator MG3633A 3 Setup Measure frequency difference with SG u e ALLEN 5 RU ERE p 2 BEEN Coaxial adaptor N P 0 SMA J Only when 6769A is BERATER used CF 1 000 000GHz Span 1kHz Synthesized signal generator MG3633A Frequency Readout Accuracy Test RF OUTPUT B Coaxial adaptor N type connector 6 12 4 Precautions SECTION 6 PERFORMANCE TESTS Set the si
36. the chamber temperature to 50 C 5 When the chamber temperature and the MS2661N internal temperature re stabilize measure the frequency by using the counter 6 Calculate the stability by using the following equation counter reading at 50 counter reading at 25 Frequency stability counter reading at 25 C 7 Change the chamber temperature to 0 and repeat steps 5 and 6 SECTION 6 PERFORMANCE TESTS Center frequency readout accuracy Add the known frequency which serves as the center frequency reference to the MS2661N as shown in the figure below and set CF same value as the known reference frequency and SPAN At this time check that the difference between the reading of the marker readout frequency thick arrow in the figure of the center frequency peak point and the CF set value is lt Center frequency accuracy As shown in the figure the Synthesized Signal Generator uses the signal source phase locked with the same accuracy as the 10 MHz reference oscillator of the MS2661N 1 Specifications e Center frequency accuracy Indicated frequency x reference frequency accuracy resolution band width x 15 span x 5 15 kHz Span 22 MHz Indicated frequency x reference frequency accuracy resolution band width x 15 span x 5 25 Hz Span 2 MHz 6 9 SECTION 6 PERFORMANCE TESTS 2 Test instruments e Synthesized signal generator MG3633A 3 Setup Marker displ
37. to the center of the screen 5 4 Enlarge and display the sigrial ni ort re ges ae 5 5 Marker Operation o dd 5 6 Check of the zone marker function sevi The marker gt function check eerte na Measure Function erret ae eR P ansehen 5 8 Screen COPY iii 5 9 PERFORMANCE TESTS ee 6 1 Requirement for Performance Tests eddie p de nee 6 3 Instruments Required for Performance 6 4 Performance Test e M 6 6 Reference oscillator frequency stability eco t ced kn len 6 6 Center frequency readout acCUracy cus 6 9 Frequency Span read Out a 6 12 Resolution bandwidth RBW 6 15 S1deband nolse iii OR d 6 19 Frequency measurement aCCUFACy dei tope dp 6 21 Amplitude display linearity eiii ae up 6 23 Frequency feSpolse oue LR UO RUBRI ERR TERR IUS EVER EE 6 27 Second harmonic distortion wis a nie 6 30 Input attenuator switching error sense ea me 6 33 Sweep time and time span accuracy siii it unse 6 36 Tracking generator output level flatness esses nennen 6 40 Nader 6 43 SECTION 7 STORAGE AND TTRANSPORTA TION neuen TA C
38. 00 Zone Span Point 50 Expand Zone 2 On Off Expand On Off A Time Time A Time 2 return A Time P 2 Displays trace A waveforms in fre Psp Contl_ quency domain and time domain si Sub Trace multaneously at top and bottom of Write screen The time domain display is Sub Trace e View the larger at this time Stop Continuous Sweep Control Restart return Simultaneously display waveforms of Trace a and Time Domain Which to display as Main Trace or Sub Trace can be selected 4 22 Menu Tree 18 27 Panel Key Top menu Trigger Gate Trigger Trigger Freerun Triggered 1 Trigger Source Trace Time Delay Time 10 0 ms Time Span 200 us 2 Gate Gate Sweep on off 2 Gate Setup Stop Restart Trace Time Trace A 121 gt Source Video wide IF Video External TV Line return u Gate Setup Gate Delay 0 us Gate Length 10 ms Gate End Int Ext Gate Trig Source return Source lt Trace Time Delay Time 10 0 ms Time Span 200 us Trigger Freerun Triggered Gate Trig Source return Lower menues SECTION 4 SOFT KEY MENU lt Trig Video Trig Level 50dB Trig Slope Rise Fall reteun w Wide IF Trig Level High
39. 61N with the standard accessories Main instrument Standard Composition Model Order NO MS2661N Spectrum Analyzer J0071 Power cord Approx 2 5 m Accessories F0013 Fuse T5 A 250 V W1813AE Operation manual Vol 1 2 3 W1813BE Service manual 1 5 SECTION 1 GENERAL Optional Accessories and Peripherals The following table shows the optional accessories and peripherals for MS2661N which are all sold separately Model 1 Order No t J0561 J0104A JS256G3 C 13 JS512G3 C 13 JS1024G3 C 13 JS2048G3 C 13 B0329G B0395B B0391A B0391B MP612A MP613A MA8601A 1621 MP614A J0063 J0395 MP640A MP654A MP520C MP520D MP526A MP526B MP526C MP526D MP526G J0007 J0008 J0743A J0742A Optional Accesories Coaxial cord Coaxial cord 1 256 kB memory card 512 kB memory card 1024 kB memory card 2048 kB memory card Protective cover Rack mount kit IEC Carring case hard type Carring case hard type RF Fuse Holder Fuse Element DC Block Adaptor 500 gt 75 Q Impedance Transformer 500 gt 75 Q Impedance Transformer Fixed attenuator for high power Fixed attenuator for high power Branch Branch CM Directional Coupler CM Directional Coupler High Pass Filter High Pass Filter High Pass Filter High Pass Filter High Pass Filter GPIB cable 1 m GPIB cable 2 m RS 232C cable 1 m RS 232C cable 1 m Remarks
40. Hz 9670372 Frequenc 10 RB 10kHz RLV 10 00dBm VB 10kHz M EUN 1700 L tT NE Ls tree LADO qe CF 1 000000GHz Span 1 43 1 000002GHz 9670372 _ Storage 10 07dBm T 1 0kHz RLV 10 1 0kNz Norma DN 14 Max Hold acc Min Hold CHER ee Eure LX LL oru o A NE EE UM CF 1 000000GHz Span 1 1 View return 3 13 SECTION 3 PANEL DESCRIPTION Blank 3 14 SECTION 4 SOFT KEY MENU In this section soft key menu functions and its hierarchical system are described using a tree TABLE OF CONTENTS Soft key Menu List 4 4 Menu Tree 4 6 4 1 4 2 Blank SECTION 4 SOFT KEY MENU SECTION 4 SOFT KEY MENU In this section soft key menu functions and its hierarchical system are described using a tree Matters to be noted about the tree are shown below 1 Panel Key indicates a hard key on the front panel 2 Top menus are the menus at the top level which are displayed on the screen when the panel key is pressed Lower menus indicates other menus below the top menus 3 When a soft key with an appended asterisk is pressed in these menus the menu moves to the lower menu indicated by the arrow
41. MHz NIE 10 kHz Reference Level 40 dBm Atten ter usa 0 dB 12 Repeats steps 6 to 8 SECTION 6 PERFORMANCE TESTS Input attenuator switching error At this point measure the switching error when the amount of attenuation in the RF input section is switched When the input attenuator is switched IF section step amplifier gain is switched To keep this step amplifier gain constant the reference level is switched according to the amount of input attenuator attenuation 1 Specifications Input attenuator switching error 2 0 dB at 0 to 60 dB frequency 100 MHz and input 10 dB 2 Test instruments Signal generator MG3633 A e Attenuator MN510C Power meter ML4803A Power sensor MA4601A 3 Setup j nritsum MS2661N turtur Coaxial connector BNC connector Signal generator MG3633A REF 10MHz STD Buff Out BFOUTPHT Attenuator C RF Input MN510C Coaxial cable N connector Power meter Power Sensor ML4803A MA4601A Coaxial adaptor N J Input Attenuator Switching Error Test 6 33 SECTION 6 PERFORMANCE TESTS 4 6 34 Procedure Step Procedure 1 Press the MS2661N Preset key and then Preset AII key 2 Operate AII Cal 3 Set the MS2661N as shown below Center siete 100 MHz EE PUTET 200 kHz
42. MS2661N Spectrum Analyzer Operation Manual Vol 1 Basic Operating instructions Fourth Edition Read this manual before using the equipment Keep this manual with the equipment ANRITSU CORPORATION Document No M W1813AE 4 0 oafety Symbols To prevent the risk of personal injury or loss related to equipment malfunction Anritsu Corporation uses the following safety symbols to indicate safety related information Insure that you clearly understand the meanings of the symbols BEFORE using the equipment Some or all of the following five symbols may not be used on all Anritsu equipment In addition there may be other labels attached to products which are not shown in the diagrams in this manual Symbols used in manual DANG ER N This indicates a very dangerous procedure that could result in serious injury or death if not performed properly WARNING N This indicates a hazardous procedure that could result in serious injury or death if not performed properly CA UTION AN This indicates a hazardous procedure or danger that could result in light to severe injury or loss related to equipment malfunction if proper precautions are not taken Safety Symbols Used on Equipment and in Manual The following safety symbols are used inside or on the equipment near operation locations to provide information about safety items and operation precautions Insure that you clearly understand the meanings of the symbols and
43. NUdS NF 4 gt i e THALET ETI 7HA98T v6 1H4981 76 110 03433308 438 1X3 IdWUS 1 2 2496 S l 1HA98T v6 14218 9261 8769 01 8 110 SA WOO 151 91 223 40 NTANOD 7408 1 0 lt 83183 02 2 98 1 dans 0 6 19 2 9 1x3 Wuolud O301A 301 9151 aora 1x3 9909 03014 398905 9141 32805 9181 OE Innos 1 130 0 98 301M HWS69 SII 14009 ASI NI 9181 1X3 11857 THAT BP8E 8 NIUO 8P82 8 N uO THABE BE 9 4915 Pel 4915 IHN8E 31 48 20 NI V901 7HASG9 OT 19155 BPBRE 8 NIU9 2966 4915 gal 1946 1881 MB 8P82 8 NIuO 31 HAS69 8T 1H G 3881 9 gpl 298669 1 3 4149056 Y3MOd ARS2 ARBTOU NIT 8199 1015 0439 AHORJH E 9 802 91907 LNNOD 901993439 WNOIS 1 02 3199 3003N3 en 189130 AMUIDH JIMS 3399181 LL M3Q00N3 AJN 031 08908 A3 MOSN3S dW3l MS ANNO NIBWOC SWAZ gt 1S 03345 QJ 033dS 1H JO 22 2 59 2834 938 iS Hd 3434554 78510 097 aN TE E
44. Ref Line Trace B B gt A Top A lt gt B Trace 1 M A B Moddle ove Off 2 gt 1 Ref Line Bottom Storage Detection return return 1 return Hold Count y 70 0 ount 1 Storage Sweep Count Count Normal Storage 256 Averaging Count Cumulative males ae Max Hold Penn N Sweep Avg Mode Stop Overwrite i Stop Non Stop Min Hold St Stop Continue Average Continue Continue Restart View Restart Restart return return return return 12 ormai 1 Trace Move Conduct movements A gt B and B gt A Pass TERS switching between and B and operation Active Pos Peak 2 Trace Calc Select A B DL corrective operation A B operation and Ref Line Sample Neg diak 3 Storage Select a storage mode from Normal Max Hold Min Hold Average Set Sweep Count Rewrite x Overwrite Stop Continue Restart etc 3 storage 4 Detection Select a detection mode from Normal Pos return 4 Detection Peak Neg Peak Sample 12 Select Trace movement between Trace sum difference operation between Trace and Ref Line and designate the storage and detection modes and Active Trace 4 20 A B A BG Menu Tree 16 27 Panel Key Top menu SECTION 4 SOFT KEY MENU Lower menues A B A BG A B 1
45. T 1 Don t use this instrument at the locations of measurement categories from CAT II to CAT IV In order to secure the safety of the user making measurements IEC 61010 clarifies the range of use of instruments by classifying the loca tion of measurement into measurement categories from to IV The category outline is as follows Measurement category CAT 1 Secondary circuits of a device connected to an outlet via a power trans former etc Measurement category CAT 11 Primary circuits of a device with a power cord portable tools home appliance etc connected to an outlet Measurement category CAT 111 Primary circuits of a device fixed equipment to which power is directly supplied from the power distribution panel and circuits from the distri bution panel to outlets Measurement category IV CAT IV All building service line entrance circuits through the integrating watt meter and primary circuit breaker power distribution panel When supplying power to this equipment connect the accessory 3 pin power cord to a grounded outlet If a grounded outlet is not available before supplying power to the equipment use a conversion adapter and ground the green wire or connect the frame ground on the rear panel of the equipment to ground If power is supplied without grounding the equipment there is a risk of receiving a severe or fatal electric shock WARNING A Falling Over For Safet
46. ace waveform parameters to the internal memory or memory card ecall Save to Select saved media and display file directories Int Regstr Display Directory Next Save Save to Mem Card Display Directory Next Dir Disp Detail Outline Select save Media Save Mem Card 1 Media 4 Upper Slot Mem Card 2 Lower 12 Slot Save Save BMP file to MemCard Display Directory Next Dir Disp Detail Outline return Save Media 4 18 Menu Tree 14 27 Panel Key Top menu TG TG TG Out Off Output Level 0 dBm Attenuator Hold Off Trace A B Normalize 1 Lower menues Trace A B Trace A Trace B A gt B B gt A A lt gt B return INormalize Instant INormalize INormalize A B DL On Off Display Line Off Disp Line Level 50 00dBm Marker Level Abs Rel return SECTION 4 SOFT KEY MENU Set ON OFF and output level of tracking generator 1 Normalize trace A waveform data and display it 4 19 SECTION 4 SOFT KEY MENU Menu Tree 15 27 Panel Key Top menu Lower menues A B A B y Trace Move y race Calc Trace A A gt B Normalize A B DL On Off
47. alified personal should be avoided Maintenance of this instrument should be performed only by Anritsu trained service personnel who are familliar with the risk involved of fire and electric shock Potentially lethal voltages existing inside this instrument if contacted accidentally may result in personal injury or death or in the possibility of damage to precision components Always follow the instructions on the following pages 2 7 SECTION 2 PREPARATIONS BEFORE USE Protective grounding 1 Grounding with 3 pole power outlet When connecting to a 3 pole grounded 2 pole type AC power supply outlet the frame of the MS2661N is connected to ground potential As a result it is not necessary to connect the FG terminal to ground 2 Grounding with frame ground FG terminal 2 8 When there is no 3 pole AC power supply outlet the protective frame ground FG terminal on the rear panel must be connected directly to ground potential Off WARNING N Freq Adj eee Max If power is supplied without protective 170 280V grounding there is a risk of accidental elec tric shock When available the protective frameground FG terminal on the rear panel or the ground pin of the supplied power cord must be connected to ground potential before power is supplied to the MS2661N Fuse holders Label indicating protective Frame ground terminal ground
48. ally to set the marker to A marker after the sweep is com pleted 6 24 SECTION 6 PERFORMANCE TESTS Step Procedure 9 As shown on Fig b read the level of the current marker when the MN510C is set at 5dB An error is determined as calibrated 5 dB value A marker level 10 Add a marker level corresponding to the calibrated ATT value when the MN510C is set 10 to 90 DB with 5 dB steps and determine the error A MKR 0 000kHz 5 04dB OdB reference 5 dB corrected value Marker level Reference Point Setting b A Marker Level when is 5 6 25 SECTION 6 PERFORMANCE TESTS Log Display Linearity 10 dB div MN510C setting dB 6 26 A B MN510C calibration value dB 0 reference Amarker level dB 0 reference Error dB 0 reference SECTION 6 PERFORMANCE TESTS Frequency response Generally when one or more signals with a different frequency but the same amplitude are input the spectrum analyzer displays the same amplitude for each spectrum on the screen 1 Specifications Frequency response At 100 MHz input 10 dB to 60 dB 1 5 dB 100 Hz to 1 8 GHz 2 Test instruments Signal generator MG3633A Power meter ML4803 A e Power sensor MA4601A 3 Setup 52661 S Coaxial cable BNC connector 08 0
49. are not ob structed If the ventilation is obstructed the cabinet may overheat and catch fire Maximum DC voltage ratings RF Input 0 Vdc TG Output 0 Maximum AC power ratings RF Input 30 dBm TG Output 20 dBm NEVER input a gt 30 dBm and gt 0 Vdc power to RF Input NEVER input a gt 20 dBm and gt 0 Vdc reverse power to TG Output Excessive power may damage the internal circuits Replacing Memory Back up Battery External Storage Media For Safety CAUTION A This equipment uses a Poly carbomonofluoride lithium battery to back up the memory This battery must be replaced by a service engineer when it has reached the end of its useful life contact the Anritsu sales section or your nearest representative Note The battery used in this equipment has a maximum useful life of 7 years should be replaced before this period has elapsed This equipment stores data and programs using Memory card Data and programs may be lost due to improper use or failure ANRITSU therefore recommends that you back up the memory ANRITSU CANNOT COMPENSATE FOR ANY MEMORY LOSS Please pay careful attention to the following points Do not remove the memory card from equipment being accessed Isolate the card from static electricity The back up battery in the SRAM memory card has a limited life replace the battery periodically For replacing the battery see page 2 15 of the Operation Manual Vol 1 Equipment Certif
50. ay f MKR 500 0010MHz 4 amp Marker display frequency mm SET LLLI E mmm Lini ae aa 2 Span 200kHz j nritsum MS2661N 10 MHz STD Buff Out RF Input Coaxial adaptor N P SMA J Synthesized signal generator Known reference frequency used as center frequency reference RF OUTPUT 10 MHz REF INPUT Coaxial cable SMA type connector MG3633A Center Frequency Readout Accuracy Test 6 10 Precautions 4 SECTION 6 PERFORMANCE TESTS Set the signal generator output level to approx 10 to 220 dBm Procedure S Step Procedure 1 2 Press the MS2661N Preset key and then Preset All key Operate Freq Cal Set the signal generator output frequency equal to the center frequency 500 MHz in the following table Set the MS2661N to the center frequency in the following table Set the span 10 kHz that corresponds to the center frequency 500 MHz in the table by using the numeric unit keys Read the marker frequency indicated by thick arrow in the figure on the previous page and check that the value is within the range between the maximum and minimum values shown in the following table Repeat steps 3 to 6 for other combination of
51. ctrum Trace Time Displays the time axis waveform at center frequency Trace A B Displays Trace A and B simultaneously simultaneous sweep of same frequency alternate sweep of independent frequencies Trace A BG Displays simultaneously both the band to be observed background and the signal band foreground chosen by the Zone marker out of the BG band Trace A Time Displays simultaneously both the frequency spectrum and the time axis waveform at the center frequency of the frequency spectrum Trace Move Calculate AB BA AGB A B gt A A B gt A A B DL gt A Storage function NORMAL VIEW MAX HOLD displays the maximum envelope MIN HOLD displays the minimum envelope AVERAGE displays average value CUMULATIVE displays cumulative waveform OVER WRITE displays waveform overwritten Input connector N J 50 Q VSWR lt 1 5 input attenuator gt 10 dB Auxiliary input output terminal REF INPUT 10 MHz 10 Hz 10 dBm to 2 dBm 50 BNC connector BUFFERED OUTPUT 10 MHz 0 dBm 50 BNC connector 1 9 SECTION 1 GENERAL Function Signal search Continued AUTO PEAK CF PEAK gt REF SCROLL Zone marker NORMAL DELTA Marker MARKER MARKER gt REF MARKER CF STEP SIZE A MARKER gt SPAN ZONE gt SPAN Peak search PEAK NEXT PEAK MIN DIP NEXT DIP Multi marker HIGHEST 10 HARMONICS MANUAL SET Measure calculation Noise level m
52. d digitized Adopts the synthesizer local system and can cover a frequency range of 100 Hz to 3 GHz Excellent in basic performance such as C N distortion frequency level accuracy and easily operable following the display of the soft key menu screen Equipped with high accuracy calibration signals and an attenuator it can accurately calibrate switching errors of LOG LIN scales resolution bandwidth reference level etc Since frequency response is corrected by built in calibration data it allows high accuracy level measurement for a wide range As the switching of waveforms between frequency domain and time domain can be done by a touch and two waveforms are simultaneously displayed signal analysis of both domains can be done efficiently Moreover our original zone marker function and multi marker function up to 10 markers are also special mention This unit provides the MEASURE function that can perform measurement of various applications without requiring the intervention of external controllers Therefore the performance evaluation of radio equipment can be easily done in terms of frequency noise occupied frequency bandwidth adjacent channel leakage power etc In addition as the template measurement of burst mean power and burst waveform are also available it is suited for evaluating the performance of digital radio equipment Applications The MS2661N Spectrum Analyzer can be used for wide range of applications such as
53. development adjustment inspection and maintenance of electronic parts and equipment in the following fields e AM FM radio equipment Digital cellular telephone cordless telephone e Satellite broadcasting and TV equipment e Small capacity microwave equipment SECTION 1 GENERAL Composition of Operation Manual This Operation Manual is composed of 7 sections and appendixes A and B The profile of each section is shown below Section conposition Explanation SECTION 1 Product outline standard configuration options applicable parts peripheral GENERAL devices and specifications SECTION 2 Operations to be done before applying power PREPARATIONS BEFORE USE SECTION 3 Description about the front and rear panels PANEL DESCRIPTION SECTION 4 Description using a soft key menu SOFT KEY MENU SECTION 5 Basic operation procedures for operation guide BASIC OPERATION PROCEDURE SECTION 6 Tests used for checking performance PERFORMANCE TESTS SECTION 7 Cautions on storage and transportation STORAGE AND TRANSPORTATION APPENDIX A MS2661N FRONT AND REAR PANEL LAYOUT APPENDIX B BLOCK DIAGRAM 1 4 SECTION 1 GENERAL Equipment Configuration This paragraph describes the configuration of the MS2661N Spectrum Analyzer with standard accessories and the various options to expand the functions Standard configuration The table below shows the configuration of the MS26
54. e Load Save Media return return 4 14 Menu Tree 10 27 SECTION 4 SOFT KEY MENU Panel Key Top menu Lower menues Measure gt Temp Meas Select 4 Line 7 Time Check 1 Limit 1 Template Pass Fail Upper LE On Off 8 Burst Temp 2 Limit 1 Power Lower Off Select Temp 3 Limit 2 Temp Table Upper Off Move Temp 4 Limit 2 Template Lower on Off Setup Temp 5 Temp Tbl Off return return return 131 nove Temp Next Page Move x 0 00 msec Move y 1 24 dB joco A Select Temp 1 Update 5 Temp Table emp Cancel Temp 3 return 4 Setup Temp Temp 5 Select Temp Table return Level Absolute Relative Template Edit Screen Make Up Temp Table Load Save Media Mem Card 1 Load Upper Temp Table Slot Load Save Display Mem Card 2 Temp Table Directory Lower Next Slot return Dir Disp Detail Outline 7 Time Template Set Standard Line of the time domain and judge Good Save NG in relation to the standard line Select Template Table Template Movement Measurement Mode Template Table Preparation Load Save Load Save of Mask Table etc Media return return 8 Burst Avg Power Measure the mean power of burst signals in the time domain Select the start end points 4
55. e marker In the Delta marker mode the Reference marker is displayed with Sweep marker Real time displays the point where the sweep completed Frequency domain display item 21 22 Center frequency In Start Stop frequency mode Start frequency is displayed Frequency span In Start Stop frequency mode Stop frequency is displayed Time domain display item 31 32 33 34 35 Trigger level indicator When the Trigger source is Video the set Trigger level is displayed on screen Trigger point indicator When the Delay time is minus value the Trigger signal input point 0 is displayed on screen Delay time When the Trigger function is not used 0 is displayed Time span Tuned frequency Menu display items 41 42 43 44 45 Menu set or group of menus title Menu title Menu page number When a few Menus exist on the same layer the Menu page is displayed with a tag Lower menu mark The current Menu is not the top this mark vertical line along the side of the Menu display is displayed and F6 soft key menu becomes return Lower menu existing mark When the lower menu exists below the current menu is appended at the top right of the current menu label 3 11 SECTION 3 PANEL DESCRIPTION DLT genes Time main sample 19dB RBtSM AT RLV us QOdBm VBt3MHz 34 35 3 12 SECTION 3 PANEL DESCRIPTION IMKR 1 000002G
56. easurement dBm Hz dBm ch C N measurement dBc Hz dBc ch Occupied frequency bandwidth measurement Adjacent channel leakage power measurement Burst in average power measurement Template limit lines comparison measurement Mask limit lines comparison measurement Memoty card interface PCM CIA Ver 2 0 2 slots Saves recalls setting conditions and waveform data Uploads downloads PTA programs Accesses SRAM EPROM and flash EEPROM writes to SRAM only Supports cards up to 2 Mbytes Save recall Can save and recall setting conditions and waveform data to and from internal registers max 12 and external memory cards max 99 Direct plotting Can hard copy screen data via RS232C or GPIB compatible models only GPIB Functions Meets IEEEA88 2 Can be controlled as device from extemal computer excluding power switch Or can control extemal equipment as controller Interface 5 L4 SRI RL1 DTI C2 C28 Environmental Temperature 0 to 50 C operating 40 to 71 not operating Humidity MIL PRF 28800F Class 3 Vibration MIL PRF 28800F Class 3 Pulse shock MIL PRF 28800F Class 3 Drop test MIL PRF 28800F Class 3 Dripproof MIL PRF 28800F Class 3 Conducted interference CISPR11 Class A 150 kHz to 30 MHz Radiated interference CISPR11 Class A 30 MHz to 1000 MHz Radia
57. ed frequently Zreqvemeonu VB 1MHx Center Center Frequency Span Reference Level RBW Freq 2 EE FREIEN or VBW function is selected and numeric value im Fre for the function can be entered into Entry area a cop Erea This reduce key operation times bap bs dE p om ak gt CF a pom fusce me This display section is called Entry area Selecting menu displays current set value of i tep ize pane SP 1 soocH 111 T parameter The set value can be changed by entering data in Entry area Fig 5 2 Press Menu On Off key The display of the soft key menu can be switched HFreQueno REV UB 1MHz ST sams on off using Menu On Off key When the menu ode disappears scale is enlarged Also when Center FF NT sop non od EE menu is displayed the scale is reduced STs OH SP 1 200GH Fig 5 3 Press Menu On Off key to return to previous screen Use the ten key pad numeric keys to enter 500 MHz MK Rs 9 amp 6MH Frequency 16 45dBm RE d MIHI 10 doi Center Freq 1 1 1 1 1 1 1 1 The
58. een the rear panel and the wall nearby equipment or obstructions so that fan ventilation is not blocked 10 cm min Internal fan 2 5 SECTION 2 PREPARATIONS BEFORE USE Rack mounting The B0395B Rack Mount Kit sold separately is required to mount the MS2661N in a rack The installation method is included in the rack mount kit diagram 2 6 SECTION 2 PREPARATIONS BEFORE USE Preparation Before Power on The MS2661N operates normally when it is connected to an 85 to 132 Vac 47 5 to 63Hz 380 to 420 Hz or 170 to 250 Vac automatic voltage change 47 5 to 63 Hz AC power supply To prevent the following problems take the necessary procedures described on the following pages before power is supplied e Accidental electric shock Damage caused by abnormal voltage e Ground current problems Note The voltage and current rating are indicated on the rear panel when the instrument is shipped from the factory In this manual the power supply voltage and current ratings are represented by Vac and A respectively To protect the operator the following WARNING and CAUTION notices are attached to the rear panel of the MS2661N WARNING A CAUTION A NO OPERATOR SERVICE FOR CONTINUED FIRE ABLE PARTS INSIDE PRORECTION REPLACE REFER SERVICING TO ONLY WITH SPECIFIED QUALIFIED PERSONNEL TYPE AND RATED FUSE WARNING N Disassembly adjustment maintenance or other access inside this instrument by unqu
59. elation to the standard line Select Mask Table Mask Movement Measurement Mode Mask Table Preparation Load Save of Mask Table etc OBW Setup Method N of Pwr xdB Down N Ratio 99 xdB Value 10 0 dB return Setupl Method R TotalPwr R RefLevel ACP Graph Off Ch Center Line Off Ch BW Line return Off ACP Setup2 Both Channel Upper Channel Lower Channel off return 12 4 13 SECTION 4 SOFT KEY MENU Menu Tree 9 27 Panel Key Top menu Lower menues Previous Page gt Mask Meas Select 4 Line Check Mask 1 Limit 1 Pass Fail Upper Off Mask 2 Limit 1 Lower Off Select Mask 3 Limit 2 Mask Table Upper Off Move Mask Mask 4 Limit 2 Lower On Off Setup Mask 5 Mask Table return return return ove Mask Move x 12 34 kHz Move y 5 12 dB Select 4 Mask 1 Update ask Table Mask 2 Cancel Mask 3 return Mask 4 ectup Mask m Mask 5 Select ask Table Level return Absolute Relative x Mask Edit screen Make Up ask Table v Load Save AMedia Mem Card 1 Load Upper Mask Table Slot Load Save Display Mem Card 2 Mask Table Directory Lower Next Slot return Dir Disp Detail Outline Save Mask Tabl
60. en obtain the deviation from the formula below by reading the delta marker level at each frequency Deviation Delta marker level reading Measurement frequency calibration value SECTION 6 PERFORMANCE TESTS Frequency Response Calibration value dBm Marker level dB Deviation dB Frequency 100 MHz 0 dB reference O dB reference O dB reference 200 MHz 500 MHz 1 GHz 1 5 GHz 6 29 SECTION 6 PERFORMANCE TESTS Second harmonic distortion Even if a signal without harmonic distortion is input to a spectrum analyzer the higher harmonics are generated by the analyzer input mixer non linearity and are displayed on the screen The second harmonic level is the highest harmonic displayed on the MS2661N The main point of the test is to apply a signal with a distortion that is lower than the MS2661N internal harmonic distortion at least 20 dB below to the MS2661N and measure the level difference between the fundamental wave and the second harmonic If a low distortion signal source cannot be obtained apply a low distortion signal to the MS2661N after passing the signal through a low pass filter LPF 1 Specifications e Second harmonic distortion At mixer input level 40 dBm lt 60 dBc input frequency 100 Hz to 900 MHz 2 Test instruments Signal generator MG3633A LPF With attenuation of 70 dB or more at twice the fundamental frequencies 3 Setup
61. equency counter Procedure MF1601A FREQ STD 10 MHz IN 10 MHz STD Buff Out INPUT Reference Oscillator Frequency Stability Test Aging rate day Test this at the ambient temperature 2 C in a vibration free place Step Procedure 1 Set the changeover switch FREQ STD INT EXT on the MF1601A counter rear panel to EXT Set the AC line power supply switch on the MS2661N rear panel to On and then the Power switch on the MS2661N front panel to On Measure the frequency using the counter with 0 1 Hz resolution after 24 hours have passed after turning the power ON Measure the frequency using the counter after 24 more hours have passed from the step 3 measurement Calculate the stability by using the following equation Frequency stability 2nd reading of the counter 1st reading of the counter 1st reading of the counter 6 7 SECTION 6 PERFORMANCE TESTS 6 8 Temperature stability Test this performance in a vibration free constant temperature chamber Step Procedure 1 Set up the MS2661N in a constant temperature chamber at 25 C in the same setup 2 Set the LINE and Power switches on the MS2661N to On and wait until the MS2661N internal temperature stabilizes approx 1 5 hours after the chamber temperature stabilizes 3 When the internal temperature stabilizes measure the frequency by using the counter with 0 1 Hz resolution 4 Change
62. evel Marker 50 00dBm Tracking On Off 2 Sweep Marker on 6 Level 2 Abs Rel Multi Marker Multi Mkr Marker Multi return Marker On DEE 3 Highest 10 HA leeis Y Mkr List 3 Allocates up to 10 multi markers Marker liic v 2 sequentially from the peak level of ange Off Active the signal displayed on screen Marker No Select 1 NIEREN 4 Allocates multi markers to the har Marker a Trist Bem 4 monic signals of frequency indi gt reg Time Abs Bel on with cated by current marker SS Auto 5 Manual Set Select eve Sa ai with 5 Function allowing user to select ee Auto Select only multi markers necessary for measurement Clear A11 Set multi marker On Off 10 multi marker gt t 1 harmonic multi marker listing of multi marker 6 Select absolute value or relative return 1 values selection of necessary markers etc value display line to display marker level 4 9 SECTION 4 SOFT KEY MENU Menu Tree 5 27 Panel Key Top menu Lower menues Peak Peak e Set maximum level search next peak next right peak next left peak Marker Search vesk gt minimum level search next minimum level search level resolution Search threshold level On Off Next Peak Next Right
63. ew Zealand C tick marking QN274 Model MS2661N Spectrum Analyzer 2 Applied Standards EMC Emission AS NZS 2064 1 2 ISM Group 1 Class A equipment xi ABOUT THIS MANUAL 1 Composition of MS2661N Operation Manuals The MS2661N Spectrum Analyzer operation manuals of the standard type are composed of the following three documents Use them properly according to the usage purpose Basic operating instruction part Vol 1 Composition of Operation Manuals Basic operating instruction part Basic Operating Instructions Provides information on the MS2661N outline preparation before use panel description basic operation soft key menu and performance tests Detailed operating instruction part Detailed Operating Instructions Provides information on the detailed panel operating instructions on MS2661N that expand on the basic operation and soft key menu in the Basic Operating Instruction Part Programming part Composed of the Remote Control Part and PTA Control Part The Remote Control Part provides information on RS 232C remote control GPIB remote control and sample programs while the PTA Control Part describes about PTA operation and PTL commands TABLE OF CONTENTS cec iii ABOUT THIS MANDAL aai tai uie heut epiac Eae ee SECTION GENERAL sine en 1 1 Product Outline cintia re e S p EO qe pH FO big dig 1 3 Composi
64. ference frequency accuracy 1 count at S N of 20 dB Setting range Span 0 Hz and 100 Hz to 3 0 GHz Accuracy 5 Setting range Resolution 10 Hz to 3 MHz 1 3 sequence Can be set manually or automatically coupled with span bandwidth 3 dB BW Accuracy 20 RBW 30 Hz to 300 kHz 30 RBW 10 Hz 25 RBW 1 MHz Video bandwidth VBW 1 Hz to 3 MHz 1 3 sequence and through Can be set manually or automatically coupled with resolution bandwidth Signal Noise sidebands 100 dBc Hz 30 kHz offset RBW 1 kHz Purity and stability Frequency drift At constant ambient temperature one hour after power on lt 50 Hz min at 100 KHz lt span sweep time lt 100 s Frequency 10 MHz Starting characteristics lt 5x10 10 minutes after power on referred to the frequency after 24 hour warm up Reference oscillator Aging rate lt 1x 107 year referred to the frequency 24 hour warm up after power on lt 2x 10 day Temperature characteristic Counts the frequency at the peak point in the zone 5 10 referred to the frequency at 25 C in the range of 0 to 50 C 1 7 SECTION 1 Amplitude GENERAL Level measurement Measurement range Continued Average noise level to 30 dBm Residual response lt 90 dBm at 200 kHz to 3 0 GHz 0 dB input attenuator lt 65 dBm at 100 Hz to 500 Hz 0 dB input attenuator
65. gnal generator output level to approx 0 to 10 dBm 5 Procedure Step Procedure 1 2 Press the Preset key and then Preset All key Operate Freq Cal Connect the MG3633A output to the MS2661N RF Input Set the MS2661N as shown below Set the MG3633A output frequency to the f frequency 999 9992 MHz shown in the table on the next page Adjust the MG3633A output frequency to set the spectrum peak at the 1st division from left end of the screen scale Remember the frequency as After setting the MG3633A output frequency to the f frequency 1000 0008 MHz adjust it to set the spectrum peak at the 9th division Remember the frequency as f Calculate f 0 8 and check that the value is within the specified range minimum to maximum values shown in the table on the next page Repeat steps 4 through 8 for each frequency span with 1 GHz center frequency shown in the table on the next page 6 13 SECTION 6 PERFORMANCE TESTS MS2661N Signal generator Frequency Span Readout Accuracy Test Center frequency 6 14 Span 2 kHz 999 9992 MHz 1000 0008 MHz Minimum value 1 9 kHz Maximum value 2 1 kHz 20 kHz 999 992 MHz 1000 008 MHz 19 kHz 21 kHz 200 kHz 999 92 MHz 1000 08 MHz 190 kHz 210 kHz 2 MHz 999 2 MHz 1000 8 MHz 1 9 MHz 2 1 MHz 10 MHz 996 MHz 1004 MHz 9 5 MHz 10 5 MHz 100 MHz
66. he fused AC power inlet to which the supplied power cord is connected It contains two time lag fuses 57 Ground Terminal Connect this frame ground terminal to ground to prevent risk of an accidental electric shock 58 RS 232C This is the RS 232C connector Connect it to an external system control ler or printer etc 59 GPIB This connector is for use with a GPIB interface It is connected to an external system controller or a printer etc 60 Trig Gate In 10 V This is a input connector for external trigger gate signal SECTION PANEL DESCRIPTION joued 63 8S 6S 09 19 IHS SseJpy 104 jenuey 01 9199 29 D AOL Fu ereo but 7 95 ONINEVM 092 0 1 261 58 01 2 69 7 Q eur pv bay u Jed UO TT HOT 015 ZHINOL 99 19 09 3 9 SECTION PANEL DESCRIPTION Description of Screen Display Display items on the screen are explained in the 4 types 1 Common display item commonly displayed items 2 Frequency domain display item displayed items in frequency domain trace 3 Time domain display item displayed items in time domain trace zero span mode 4 Menu display items displayed items at soft key menus Common display item 1 Marker value 2 Reference level When the reference level offset is o
67. he specified span 1 Auto Tune 2 Sets frequency step size for changing center frequency 92 CF Step Size la Frequency Scroll gt lt Scroll gt ScrollStep Scroll Step Size ldiv 12 2div Span Span Span 5div Full Span 10div Zero Span Scroll return lt Scroll Set frequency span items including frequency span full span zero span frequency span scroll etc 4 6 SECTION 4 SOFT KEY MENU Menu Tree 2 27 Panel Key Top menu Lower menues Amplitude Amplitude Lvl Offset Ref Level Units Reference Offset v Units Level On Off 255 M dBm Ref Level V gt Scale gt RLV Offset IG 10 05dB 10dB div V Lin Scale Ref Level 10 div Offset I M dBmV 5dB div Unit 5 div dBuV emf 2dB div Log a Y III 2 div Scale Input 1dB div Impedance m T Linear return Impedance 1 div Scale _ J return 1 1 return lil I 2 return return w Ref Step w Disp Line Amplitude 1Div Display Attenuator Line Ref Level Off Manual Step Size 2Div Disp Line 1 4 Level Impedance Display 50 00dBm Auto Line 5Div 50 Ohm Attenuator 10Div Marker B 75 Ohm
68. ic data units and special functions 3 4 Panel Making SECTION 3 PANEL DESCRIPTION Explanation of Function 16 17 18 19 20 21 22 Preset Local Copy Stby On Memory Card RF Inout TG Output Rotary knob Used for moving marker and inputting data v A Increments and decrements input data Shift To execute panel functions indicated by blue letters press this key and then press the blue lettered key BS Backspace key for correcting input mistakes 0 9 Numeric data setting keys GHz MHz kHz Hz Units keys for frequency level time etc This sets the measurement parameters to the default values This changes the remote status to the local status This outputs a hard copy of the screen to a printer or plotter This is the power switch It can be used when the back panel power switch is on The power on condition is fetched from the Stby condition when the key is pressed for about 1 second The equipment is returned to the Stby condition from the power on condition when the key is pressed again for about 1 second This is the slot to set memory cards which save load the waveform data and measurement parameters etc Up to two plug in memory card can be used This is the RF input connector This is the tracking generator output connector 3 5 SECTION 3 PANEL DESCRIPTION 14014 1 8 LZ
69. icate Anritsu Corporation certifies that this equipment was tested before shipment using calibrated measuring instruments with direct traceability to public testing organiza tions recognized by national research laboratories including the National Institute of Advanced Industrial Science and Technology and the Communications Research Laboratory and was found to meet the published specifications Anritsu Warranty Anritsu Corporation will repair this equipment free of charge if a malfunction occurs within 1 year after shipment due to a manufacturing fault provided that this warranty is rendered void under any or all of the following conditions The fault is outside the scope of the warranty conditions described in the operation manual The fault is due to mishandling misuse or unauthorized modification or repair of the equipment by the customer The fault is due to severe usage clearly exceeding normal usage The fault is due to improper or insufficient maintenance by the customer The fault is due to natural disaster including fire flooding earthquake etc The fault is due to use of non specified peripheral equipment peripheral parts consumables etc The fault is due to use of a non specified power supply or in a non specified instal lation location In addition this warranty is valid only for the original equipment purchaser It is not transferable if the equipment is resold Anritsu Corporation will
70. ift the signal from the center intentionally Press Frequency key and More key in order and then Scroll key two times MKR 500 001 OMH Frequency The soft key menu marked by an asterisk on 16 RB MEL 1 the upper right indicates that the menu can further be opened by pressing the key Adversely the soft T T 1 1 Center mem Fe nu 1 i 1 ido key menu not marked indicates that the menu cannot be opened any more so to speak the end Scrol i gt of menu opening lt Scroll e Sie The following items can easily be checked by the 500 o000MH 500kHz soft key menu tab How many pages of the soft Fig 5 7 key menu being displayed currently are there and what page is displayed now To turn over the page press More key Press Peak Search key MER 500 16 9 Vs 10 ODcdEm 10dB Peak Peak Search Next Peak Mest Right Peak Next Lert Peak Horma Marker Delta Marker 499 S000MH Span 500kHz T Fig 5 8 The marker fetches the signal Press More key Press Marker key
71. inter Setup return Plotter Setup Set Printer Plotter to hard copy the screen Set Printer ile Save Media 1 Save the screen image data in memory card by BMP format MS DOS bit map data format Plotter Printer model Plotter model Paper Feed Stop Printer Plot Location Reset etc save Media MemCard 1 Upper slot MemCard 2 Lower slot return 4 Paper Size Full Size Quarter Size return Location Auto LLL xp return Item All Trace Scale return 4 25 SECTION 4 SOFT KEY MENU Menu Tree 21 27 Panel Key Top menu Lower menues Sound The menu with mark cannot be used on the MS2661N 1 Sets whether the coupled settings for RBW VBW etc in frequency and time domain independent or common 2 Changes screen color pattern System System Couple Common Independnt x r Display Display Parameter Display L Iype 1 gt change Clr 2 Change Color Color Auto SWT Pattern 1 Hi Lvl Acc Fast Clock Disp Color y m d Pattern 2 Power On State Color Pattern 3 Color l gt Pattern 4 n Define Clr System return Define gt Copy from User Color Copy Color Set Date Ptn from Col
72. izing the momentary power supply interruption If this equipment enters the standby state due to momentary power supply interruption or power failure check the state of the measuring system and press the front power switch to restore power to this equip ment Further if this equipment is built into a system and the system power has to be disconnected then recon nected the power for this equipment must also be restored by pressing the front power switch Consequently if this equipment is built into remote monitoring systems that use MODEMS the standby function of this equipment must be modified ABOUT DETECTION MODE This instrument is a spectrum analyzer which uses a digital storage system The spectrum analyzer makes level measurements in frequency steps obtained by dividing the frequency span by the number of measure ment data points 501 This method of measurement cannot detect the signal peak level if the spectrum of a received signal is narrower than these frequency steps To resolve this problem this instrument usually operates in positive peak detection mode and normal detection mode In the positive peak detection mode the highest level within the frequency range between the sample points can be held and traced In the normal detection mode both the positive peak and the negative peak can be traced Positive peak detection mode should be used for almost all measurements including normal signal level measuremen
73. leaning S 7 3 Storage Precautions na sense ie UR EE RETI ERR 7 4 Precautions before storage viii tei e eat 7 4 Recommended storage 7 4 Repacking and Transportation essen 7 5 Reparan td nt En oem 7 5 Transportation ia cb 7 5 APPENDIX A FRONT AND REAR PANEL LAYOUT A 1 APPENDIX BLOCK DIAGRAM eu see 1 SECTION 1 GENERAL This section outlines the MS2661N Spectrum Analyzer and explains the composition of this manual the configuration of the MS2661N with the standard accessories the options the optional accessories and peripherals for expanding the MS2661N capabilities and the MS2661N specifications TABLE OF CONTENTS Product Outline Ris EM ER RU RR er 1 3 Composition of Operation Manual sss tentis 1 4 Equipment Configuration essent 15 Standard configuration sss ttt 1 5 Optional Accessories and 00000 1 6 Specifications 1 7 1 4 Blank SECTION 1 GENERAL SECTION 1 GENERAL Product Outline The MS2661N henceforth called this unit is a portable type color LCD spectrum analyzer suited for signal analysis of radio equipment where the efficiency of frequency usage is increased and equipment are increasingly speeded an
74. level input level dBm input attenuator dB 1 8 Frequency range 9 kHz to 3 0 GHz Output range 0 to 60 dBm resolution 0 1 dB Flatness 2 25 dB referenced to the output of 100MHz 0 dBm setting Residual FM lt 50 Output impedance 50 ohm nominal Type N VSWR lt 2 1 Spurious outputs lt 20dB General electrical specifications Sweep time Frequency domain SECTION 1 GENERAL Continued Setting range 20 msec to 1000 sec Can be set manually or automatically coupled with span resolution bandwidth and video bandwidth Accuracy 15 20 msec to 100 sec Time domain Setting range 12 5 usec to 1000 sec Accuracy 1 100 usec to 100 sec Sweep mode CONTINUOUS SINGLE Trigger Switch FREE RUN TRIGGERED Trigger Source External 10 V 0 1 V resolution TTL Rise Fall BNC 1 5 Trigger level Trigger slope Connector Impedance Video Trigger level 100 dB to 0 dB log scale 1 dB resolution 0 to 100 lin scale 1 resolution Trigger slope Rise Fall Wide IF Video High Mid Low Line 47 to 63 Hz Detection mode POS PEAK SAMPLE NEG PEAK NORMAL POS NEG Display 5 7 inch Color TFT LCD Display items Graticule Waveform Setting parameters Operation menus Title Display function Trace Displays frequency spectrum Trace B Displays frequency spe
75. low to verify the MS2661N performance at acceptance inspection periodic inspection and after repair Reference oscillator frequency stability e Center frequency display accuracy Frequency span display accuracy Resolution bandwidth and selectivity e Sideband noise level Frequency measurement accuracy Amplitude display linearity Frequency response Second harmonic distortion Input attenuator switching error Sweep time and time span accuracy e TG output level Execute the performance tests at regular intervals as preventive maintenance for important evaluation items We recommend that the performance be inspected regularly once or twice a year If the specifications are not met at the performance tests please contact Anritsu Corporation SECTION 6 PERFORMANCE TESTS A list of instruments required for performance test is shown below Instruments Required for Performance Test Instruments Required for Performance Test 1 2 Recommended instrument name Model name Synthesized signal generator MG3633A Required Performance T Frequency range 10 MHz to 3 GHz Resolution of 1 Hz possible Output level range 20 to 0 dBm Resolution of 0 1 dB possible SSB phase noise 130 dBc Hz at 10 KHz offset Second harmonic lt 30 dBc Amplitude modulation 096 to 10096 0 1 to 400 Hz possible External reference input 10 MHz possible Test item Frequency span displa
76. lti Marker 4 F File Ope 25 N Noise Meas 7 FM Monitor 17 Normalize 14 Format 25 O OBW Setup 8 Freq Count 7 Occ BW 8 Frequency 1 Gate 18 Gate Setup 18 4 4 SECTION 4 SOFT KEY MENU Menu Menu Tree page 28 Menu Menu Tree page 28 P Paper Size 20 T Temp Meas 10 Peak 5 TG 14 Plotter 20 Threshold 2 Pon State 21 Title 24 2 Trace A B 14 x IS Preset 28 Trace Calc 15 Printer 20 Trace Move 15 PTA 25 Trace Time 17 18 PTA Lib 26 TrackingAd 14 R RBW 3 Trnsformer 2 Recal Media 12 Trig Ext 18 Recall 12 Trig TV 18 Ref Line 15 Trig Video 18 Ref Step 2 Trigger 18 RS232C 24 TV Monitor 19 S Save 13 U Units 2 Save Media 13 20 Userl 6 ScrollStep 1 User2 6 Select 2 9 10 User3 6 Set Date 21 V VBW 3 Set Time 21 W Wide IF 18 Setup 2 Z Zone Width 4 Setup Mask 9 Setup Temp 10 Souce 17 18 Sound 21 Span 1 Storage 15 17 Sweep Time 3 Swp Contl 16 17 System 21 4 5 SECTION 4 SOFT KEY MENU Menu Tree Menu Tree 1 27 Panel Key Top menu Lower menues y Frequency Set items related to frequency including the center frequency start stop ed frequency peak gt CF auto synchronization frequency step size and scroll req step size etc Start Freq Stop T Freq 1 Detects peak point in pre specified in BG range span and automatically E tunes the peak signal to t
77. n is appended 3 Resolution band width RBW When the RBW is Manual is appended When the Couple mode is Independent t is appended in time domain mode 4 Video band width VBW When the VBW is Manual is appended When the Couple mode is Independent t is appended in time domain mode 5 Attenuator When the Attenuator is Manual is appended 6 Sweep time When the Sweep time is Manual is appended 7 Time or title Time is updated in 1 sec period Trace name Input impedance When the input impedance is 75 2 75Ohm is displayed When the input impedance is 500 nothing are displayed 10 Trace 11 Y scale range Displays the setting contents of the Y axis scale range 12 UNCAL indicator When the relation among Span RBW VBW Sweep time is UNCAL the measurement error of the level and frequency is large because of too short sweep time UNCAL is displayed When it is not UNCAL state nothing are displayed 13 Average hold count Displays the current sweep time when Storage mode is Averaging and Max hold Min hold When the Storage mode is others nothing are displayed 3 10 SECTION 3 PANEL DESCRIPTION Current marker Displays at maximum or minimum point within the Marker zone The frequency in frequency domain time in time domain and level are displayed at the item of the 1 Marker above Marker zone Displays the Marker zone with a dotted rectangular When the Zone width is spot it becomes a dotted line Referenc
78. n is equal to the logarithm dB of the input signal level Input the correct level signal to the RF Input via an external attenuator and calculate the error from the attenuation of the attenuator and the A marker reading at the trace waveform peak Specifications Amplitude display linearity After automatic calibration LOG 1 5 dB for to 85 dB RBW lt 10 kHz 1 dB for 0 to 70 dB RBW lt 100 KHz 0 5 dB for 0 to 20 RBW 1 MHz Test instruments Setup Signal generator MG3633A e Attenuator MN510C Anritsum MS2661N e l Signal generator Attenuator a ve TS MG3633A MN510C E H SG RF OUTPUT Coaxial cable type connector Amplitude Display Linearity Test 6 23 SECTION 6 PERFORMANCE TESTS 4 Procedure LOG display linearity Step Procedure 1 Press the Preset key 2 Operate AII Cal 3 Set the MG3633A to 100 MHz and 0 dBm 4 Set the MN510C to 0 dB 5 Set the MS2661N as shown below Center Fred t eese 100 MHz NICE 10 kHz Reference Level 0 dBm fournir 10 dB RBD Weiss iia 3 kHz VBW ae 300 Hz 6 Press key to set the spectrum waveform peak to the center of the screen 7 Adjust the MG3633A output level so that the marker level reading is 0 0 dBm 8 Press the Marker key sequenti
79. nt menu as the menu title is displayed on the upper row of the soft key Here return to the screen of Fig 5 7 and ensure that the screen changes to that of Fig 5 10 only by pressing the key 5 7 SECTION 5 BASIC OPERATION PROCEDURE Measure Function Check Press Preset key and Preset All Parameters key in order Press Peak Search If the zero beat signal level local feed though is larger than the signal level and the marker fetches the zero beat level press Next peak key and put the marker on the signal MER SOSMH 16 6 4dBm RE d MIHI 1 2 10 DOcEm MES 1MHz Peak Search Next Peak Zone Sor_ Next Fight __Peak presen Mest Lert Peak Normal Marker Delta i Marker ST SP 1 800GH I Fig 5 11 Press the Measure key and Frequency Count key to set the function of high accuracy frequency measurement of the marker points Then press the Count On key and start measurement The soft key menu display can be switched req count Off by the Menu On Off key S500 000 MH Re 1 RLY 10 00cdBm Count On However keys that condition setting is not possible unless a menu is On unconditionally make the soft key menu display On when p
80. ont and rear panels Figs 3 1 and 3 2 are described about the case in which all the options are attached to Table of Front Panel Features No Panel Making Explanation of Function 1 LCD This is a 5 7 color TFT liquid crystal display LCD It displays the trace waveforms the parameter settings the values of marker and the soft menu keys etc 2 Menu On Off This toggles the soft key menu display On Off 3 1 6 These are the soft keys for selecting the soft key menus linked to the panel key operation 4 More This displays the next page of soft key menus 5 Freq Ampl This is the frequency and level parameter data input section Frequency Sets frequency Span Sets frequency span Amplitude Sets reference level gt CF Sets peak level signal frequency on screen to center frequency Ref Sets peak level on screen to reference level 6 Marker This section is related to operation of marker functions Marker Sets marker Multi Mkr Sets multimarkers Press this key after pressing the Shift key Peak Search Moves marker to currently displayed peak level Marker gt Sets paramater according to marker value Press this key after pressing the Shift key T User This is a user dedicated key which users can specify 3 3 SECTION 3 PANEL DESCRIPTION No Panel Making Explanation of Function 8 Single This sets the sweep mode Single Executes single sweep Continuous Executes continuous s
81. or return Select Pattern 1 Item Set Time BackGround Color Pattern 2 Pon State Red Set Date 15 Color Before Pattern 3 Power Off Year Green 15 Color Recall Set Time Pattern 4 Memory Month Blue Hour 15 State Day return Minute return 121 EE Recall Second Memory No ab return return Set various modes of systems of this device return Set Couple Display Color Pattern Define User Color Power On State etc 4 26 Menu Tree 22 27 Panel Key Top menu Lower menues Cal Cal All Cal Level Cal Freq Cal FM Cal Preslctr Tuning 1 1 Off Cal Status Mainte nance SECTION 4 SOFT KEY MENU Execute calibration Select an item from AII Cal Level Cal and Freq Cal gt lt Calibration status screen 4 27 SECTION 4 SOFT KEY MENU Menu Tree 23 27 Panel Key Top menu Lower menues Set interfaces for external devices to connect Select RS232C or GPIB and set the RS232C interface GPIB address etc Interface Interface gt 652326 RS232C Setup Baud Rate GPIB 4800 My Address Parity Even AAN Data Bits Connect to 8bits _ Controller _RS232C Stop bit Connect to abit _ Prt Plt None Connect to Peripheral GEIB return
82. pment 2 Marker operation Panel key Soft key Check of the zone marker function The marker CF function check 3 Measure function check 4 Screen hard copy Signal Display Turn the power on Press the AC line power switch on the rear panel then press the power switch 0 on the front panel In this case continue pressing the power switch for one second or more Press Preset key Press Preset Parameters key in the menu The power is turned on off only when the power MER Preset RB 1MH Preset RLV 10 VB d MEI switch is pressed for one second or more This prevents power from being turned on off easily Preset by mistake control Preset Trace Poren tere When panel key hard key is pressed the related Preset BB soft key menu is displayed Preset Fr ed Time Parameters STs 6P21 800GH Partial resettings are enabled This resetting includes only the display related resetting or the Fig 5 1 resetting of special modes such as zone sweep 5 3 SECTION 5 BASIC OPERATION PROCEDURE Set the signal to the center of the screen Press Frequency key When pressing Frequency Span Amplitude or Coupled Function key s which is us
83. r on the leftmost peak of the sine wave Setting the MS2661N marker mode to delta marker move the current marker to the right using the knob Then set the zone marker to the 18th peak from the leftmost sine wave peak on the screen Read the time display of the delta marker which corresponds to 90 of the Sweep Time Obtain the SWP TIME by the following equation delta maker reading SWP TIME Setting SWP TIME 1000 Hz 6 37 SECTION 6 PERFORMANCE TESTS Step Procedure 13 Measure at each setting shown in the table below according to steps 8 to 12 MS2670A Setting SWP TIME 20 msec MG3633A AM modulation frequency MS2670A SWP TIME 9096 of specification min max 15 3 msec 20 7 msec 200 msec 153 msec 207 msec 2 sec Leftmost peak 6 38 dafad E ET 1 53 2 07 15 3 20 7 The 18th peak numbered from the leftmost peak b Time span SECTION 6 PERFORMANCE TESTS Step Procedure 1 Perform test procedure steps 1 to 8 on the preceding paragraph a However set MODULATION FREQ of the MG3633A to 100 Hz 2 Set the MS2661N display mode to Time 3 Set Time Span to 20 msec 4 Perform steps 8 to 13 of the test procedure on the preceding paragraph a MS2670A time span 20 msec MG3633A AM modulation frequency MS2670A del
84. r one second or more in standby mode to turn on the power of the MS2661N Stby The stby indicator goes off the indicator orange O comes on then power is supplied to the MS2661N Anritsu MS2661N The power on screen is displayed m Selfcheck y for about 40 seconds MKR 952MHz 75 33dBm RB 1MHz AT 10d8 10 00dBm UH 1MHz ST 33ms A waveform screen is displayed ST Hz SP 1 80GGHz For parameter settings at the factory shipment see Appendix A in the Operation Manual Vol 3 Programming Remote Control Normally the parameters immediately after the power on depend on the state immediately before the last power off To turn on the power with other parameter settings see para 9 5 Condition Setting at Power on in the Operation Manual Vol 2 2 11 SECTION 2 PREPARATIONS BEFORE USE 2 12 During power on WARNING N To maintain the MS2661N sometimes it is necessary to make in ternal checks and adjustments with the covers removed while power is supplied Very high dangerous voltages are used in the MS2661N if insufficient care is taken there is a risk of a accidential electric shock being received or of damage to the equipment To maintain the MS2661N request service by a ser vice personnel who has received the required training SECTION 2 PREPARATIONS BEFORE USE Connecting to Device Under Test
85. ressing a panel key Count OFF From the screen after executing measurement press return another panel key and change parameters and then ST OH SP 1 200GH pressing again the Measure key will automatically return to the menu of this screen and not to page 1 Fig 5 12 of the menu page learning function Itis a useful function when repeating measurement The frequency of marker points is displayed at the top left of the screen Incidentally the internal counter correctly operates even at the full span condition so an operation to reduce frequency span otherwise required is not necessary in this model 5 8 SECTION 5 BASIC OPERATION PROCEDURE Screen Hard Copy The screen can be hard copied with the VP 600 printer Epson via an RS 232C interface and the procedures are described below D 2 3 4 5 6 7 8 9 10 As illustrated below connect the RS 232C connector and printer with an attached RS 232C cable Press the Copy key and the currently displayed screen is hard copied If the printed copy is improper check if the RS 232C interface is correctly set in the following sequence Press the Shift key and then the Interface key Press the Connect to Controller key several times to get None on the display and press the Connect to Prt Plt key
86. rotective grounding 222222222200 2 8 Connecting power SUPPIY tat rad ertet CF 2 9 IE WEL 2 10 Stand V Q 2 10 go cp 2 11 Connecting to Device Under Test eese 2 13 Internal Calibration eec 2 14 Using the Memory add 2 15 Using the RS 232C Interface 2 16 Using the GPIB Interface P 2 16 Reprogramming Mec 2 16 2 17 Replacing Fuse 2 18 2 1 2 2 Blank SECTION 2 PREPARATIONS BEFORE USE SECTION 2 PREPARATIONS BEFORE USE Unpacking Remove the MS2661N and accessories after undoing the packing case Save the packing case and spacers etc if it might be reshipped again sometime The standard MS2661N consists of the following items If any part is missing or if the MS2661N has been damaged in transport contact your sales representative immediately Table 2 1 List of Parts and Accessories Model Order No Main instrument MS2661N Spectrum Analyzer J0017 Power cord Approx 2 5 m F0013 Fuse T5A250V W1813AE Operation manual Vol 1 2 3 W1813BE Service manual Accessories Note Refer to the factory packing lists for
87. sed to high humidity 3 It may be exposed to active gases 4 It may be exposed to extreme temperatures 40 C or gt 71 C or high humidity 2 85 3 Remove the memory card from the slot and store it separately from the main body Hecommended storage precautions The recommended storage conditions are as follows Temperature 0 to 30 C Humidity sisses 40 to 80 Stable temperature and humidity over 24 hour period Saving the setting parameter and data before storage The MS2661N back ups the internal data such as setting parameters with a built in battery The battery life is about 7 years after shipment If it is feared that the data may be lost because of the battery life over save the setting parameter to the memory card or record them to re use them after storage Early battery replacement is recommended 7 4 SECTION 7 STORAGE AND TRANSPORTATION Repacking and Transportation The following precautions should be taken if the MS2661N must be returned to Anritsu Corporation for servicing Repacking Use the original packing materials Ifthe MS2661N is packed in other materials observe the following packing procedure 1 When repacking remove all the cables and unplug the memory card from the slot 2 Wrap the MS2661N in a plastic sheet or similar material 3 Use a cardboard wooden box or aluminum case which allows shock absorbent material to be
88. several times and get RS 232C on the display Now the printer can be operated with RS 232C Press the RS 232C Setup key and set so that or check if the the setting of RS 232C interface is the same between the main body and printer For the setting checking of the RS 232C interface on the printer side refer to the instruction manual of the printer Press the Shift key and then the Copy Cont key Press the Printer Plotter key and select Printer Press the Printer Setup key and then press the VP 600 key Press the Magnify key several times and make the display x Press the key and the currently displayed screen is hard copied Rear panel ig Printer RS 232C Cable Mis Fig 5 13 5 9 SECTION 5 BASIC OPERATION PROCEDURE Blank SECTION 6 PERFORMANCE TESTS In this chapter measuring instruments setup and operations necessary for conducting performance tests of MS2661N are described TABLE OF CONTENTS Requirement for Performance Tesis eek 6 3 Instruments Required for Performance sese 6 4 Performance Test
89. t pulsed noise analysis and others It is impossible to measure the signal level accurately in sample detection mode or in negative peak detection mode Use of sample detection mode is restricted to random noise measurement occupied frequency bandwidth measurement for analog communication systems and adjacent channel leakage power measurement etc Measurement item Normal signal POS PEAK Random noise SAMPLE Pulsed noise NORMAL POSI NEG Occupied frequency bandwidth adjacent channel leakage power SAMPLE for analog communication systems Occupied frequency bandwidth adjacent channel leakage power POS PEAK or SAMPLE for digital communication systems When a detection mode is specified as one of the measurement methods make the measurement in the specified detection mode Notes On Export Management This product and its manuals may require an Export License Approval by the Government of the product s country of origin for re export from your country Before re exporting the product or manuals please contact us to confirm whether they are export controlled items or not When you dispose of export controlled items the products manuals are needed to be broken shredded so as not to be unlawfully used for military purpose C tick Conformity marking Anritsu affixes the C tick marking on the following product s in accordance with the regulation to indicate that they conform with the EMC framework of Australia N
90. t the MS2661N as shown below Center oer iore treten 100 MHz SPa ar M PH 5 MHz RBW MANUAL 1 MHz icone AONO LOG 1 dB div Press the gt RLV key and match the peak of the signal trace to the top line REF LEVEL on the screen Press the Signal key to execute a single sweep then check that the single sweep has been completed After pressing the Measure key operate Occ BW Measure and Setup and display the setup menu of occupied frequency bandwidth mea surement Select XdB Down and set it to 3 dB Press Return to return to the Occ BW Measure menu and then press Execute The 3 dB resolution bandwidth value is displayed in the upper left hand corner of the screen Fill in this value in the table on the next page Repeat steps 3 to 9 for the frequencies other than the resolution bandwidth 1 MHz and the fre quency span 5 MHz according to the combina tions of resolution bandwidth and frequency span shown in the table on the next page gt bandwidth Bandwidth Measurement 6 17 SECTION 6 PERFORMANCE TESTS Resolution bandwidth 1 MHz 300 kHz 100 kHz 30 kHz 10 kHz 3 kHz 1 kHz 300 Hz 100 Hz 30 Hz 10 Hz 6 18 Resolution Bandwidth 3 dB Frequency span 5 MHz 500 kHz 200 kHz 50 kHz 20 kHz 5 kHz 2 kHz 500 Hz 200 Hz 100 Hz 100 Hz 3 dB bandwidth
91. ta marker reading 9096 of specification min max 17 82 msec 18 18 msec 200 msec 178 2 msec 181 8 msec 2 sec 1 782 sec 1 818 sec 20 sec 17 82 sec 18 18 sec 6 39 SECTION 6 PERFORMANCE TESTS Tracking generator TG output level flatness The output level of the Tracking Generator can be easily tested by inputting the TG output signal to the RF Input connector of the MS2661N Here an accurate method to test the TG output level by using a power meter is described below 1 Specifications Output level flatness lt 2 25 dB at output level 0 dBm referenced to 100 MHz 2 Test instrument PONCE ida ML4803A MA4601A e Power sensor 3 Setup MS2661N with Option 20 Anritsum MS266 IN ma m e Power meter a 23 ML4803A O e A A TG Output Power sensor TG Output Level flatness Test 6 40 4 Procedure a Calibrating ML4803A Power Meter Step Procedure SECTION 6 PERFORMANCE TESTS 1 Warm up the ML4803A then zero adjust the ML4803A Note Don t connect anything to the power sensor Connect the power sensor to the CAL OUTPUT of the ML4803A Press the ON key After conforming the measured value to be stabilized press the ADJ key for calibration b Meas
92. take the necessary precautions BEFORE using the equipment This indicates a prohibited operation The prohibited operation is indicated symbolically in or near the barred circle This indicates an obligatory safety precaution The obligatory operation is indi cated symbolically in or near the circle This indicates warning or caution The contents are indicated symbolically in or near the triangle This indicates a note The contents are described in the box These indicate that the marked part should be recycled MS2661N Spectrum Analyzer Operation Manual Vol 1 Basic Operating Instructions 1 July 1996 First Edition 10 May 2004 Fourth Edition Copyright 1996 2004 ANRITSU CORPORATION All rights reserved No part of this manual may be reproduced without the prior written permission of the publisher The contents of this manual may be changed without prior notice Printed in Japan For Safety WARNING A 1 ALWAYS refer to the operation manual when working near locations at which the alert mark shown on the left is attached If the operation etc is performed without heeding the advice in the operation manual there is a risk of personal injury In addition the equipment performance may be reduced Moreover this alert mark is sometimes used with other marks and de scriptions indicating other dangers Measurement Categories This instrument is designed for Measurement category CA
93. ted susceptibility 1000 4 3 test condition 3 v m 80 MHz to 1000 MHz 80 1 kHz AM SECTION 1 GENERAL Continued Dimension 177 320 W 351 D mm Weight lt 15 115 Vac operation 85 to 132 V 3 0 A rms max 47 5 to 63Hz 380Hz to 420Hz Power requirements 230 vac operation 170 to 250 V 1 5 A rms max 47 5 to 63 Hz Maximum power consumption lt 250 W The specifications above are applicable to system settings and auto sweep time of high level accuracy mode SECTION 1 GENERAL Blank SECTION 2 PREPARATIONS BEFORE USE This section explains the preparations and safety procedures that should be performed before using the MS2661N Spectrum Analyzer The safety procedures are to prevent the risk of injury to the operator and damage to the equipment Insure that you understand the contents of the pre operation preparations before using the MS2661N For connecting the GPIB cable and setting the GPIB address see the Remote Control part of the separate Operation Manual Vol 3 TABLE OF CONTENTS 2 3 A X 2 4 Locations to be avoided 2 4 Positioning 2 4 Eclog M 2 6 Preparations before Power On 2 7 P
94. terminal To prevent accidental electric shock connect this terminal to ground potential SECTION 2 PREPARATIONS BEFORE USE Connecting the power supply Make sure that the power switch on the upper right corner of the rear panel is in the Off position before connecting the power cord to the AC outlet If not Off push the power switch on the rear panel to Off Connect the attached power cord to the AC power inlet at the rear of the MS2661N and connect the other end to the AC outlet 2 9 SECTION 2 PREPARATIONS BEFORE USE Power On Standby After connecting the MS2661N to the AC outlet press the power switch on the upper right corner of the rear panel to turn on the MS2661N The MS2661N enters standby mode and the stby indicator green on the left side of the front panel comes on In standby mode the MS2661N supplies power only to the internal reference oscillator The frequency of the reference crystal oscillator is unstable immediately after the power is on This instability will adversely affect the accuracy of the frequency or narrow span measurements In standby mode after the power is on power is applied only to the reference crystal oscillator so that the frequency of the reference crystal oscillator stabilizes 2 10 SECTION 2 PREPARATIONS BEFORE USE Power on Press the power switch on the left side of the front panel fo
95. the MS2661N is not used for a long time or is moved stored press the power switch on the rear panel to off 2 17 SECTION 2 PREPARATIONS BEFORE USE Replacing Fuse The MS2661N with standard accessories has two spare 5 A fuses The fuses are mounted in the fuse holder and must be replaced if they blow If the fuses must be replaced locate and remedy the cause before replacing the blown fuses WARNING N f the fuses are replaced while power is supplied there is a serious risk of electric shock Before replacing the fuses set the power switch to OFF and remove the power cord from the power outlet f power is supplied without protective grounding there is a risk of accidental electric shock In addition if the AC power supply voltage is unsuitable there is a risk of the internal circuits of the MS2661N being damaged by the abnormal voltage Before supplying power again after changing the fuses check that the protective grounding described previously is still connected and check that the AC power supply voltage is suitable Then set the power switch to ON CAUTION N When there are no supplied spare fuses the replacement fuses must have the same rated voltage and current as the fuses in the fuse holders f the replacement fuses are not of the same type they may not fit correctly there may be faulty connection or the time taken to for the fuses to blow may be too long
96. the parts and accessories when there are special specifications 2 3 SECTION 2 PREPARATIONS BEFORE USE Installation Locations to be avoided The MS2661N operates normally at temperatures from 0 to 50 C However for the best performance the following locations should be avoided Where there is servere vibration Where the humidity is high Where the equipment will be exposed direct sunlight Where the equipment will be exposed active gases In addition to meeting the above conditions to insure long term trouble free operation the equipment should be used at room temperature and in a location where the power supply voltage does not fluctuate greatly CAUTION N If the MS2661N is used at normal temperatures after it has been used or stored for a long time at low temperatures there is a risk of short circuiting caused by condensation To prevent this risk do not turn the MS2661N on until it has been allowed to dry out sufficiently Positioning 2 4 Position the MS2661N horizontally on a flat surface such as a table SECTION 2 PREPARATIONS BEFORE USE If necessary use the tilt handle as shown below to improve the viewing angle Push the pivots of the handle inward and rotate it until it clicks into the new position CAUTION N To suppress any internal temperature increase the MS2661N has a fan on the rear panel as shown in the diagram below Leave a gap of at least 10 cm betw
97. tion of Operation Manual de ee oae ec e 1 4 Equipment Configuration nu 1 5 standard CODBIguratiOb EEEE 1 5 Options oio EIER UBI I RI 1 6 Optional Accessories and 1 7 SDOCIBCATOTIS 7 iecit oido 1 8 SECTION 2 PREPARATIONS BEFORE USE teta uenti 2 1 Installation Site and Environment 2 3 Locations to b avoided iie as 2 3 Fan Clearance i C 2 3 Safety T 2 4 lu ycce C 2 4 Input level to RE Input eoim ertt tta roe omen p a pd Banal 2 5 Installation 2 6 Ie asuiiminem M 2 6 Preparationsibetore PoWer on viii 2 7 Protective 2 8 Replacing TUS zungen 2 9 Precaution for Handling Memory Card essen 2 11 SECTION 3 PANEL DESCRIPTION cuina 3 1 Rear Panel Features eae 3 3 SECTION 4 SECTION 5 SECTION 6 SOFI REY MENO ritenuti onlin leaden 4 1 Soft key Menu een a 4 4 Men Tree 4 6 BASIC OPERATION PROCEDURE nn ea 5 1 Signal DIS playere LIU 5 3 Turn THE On tricot et em lee 5 3 Set the signal
98. uring TG output level accuracy Step Procedure 1 2 Press the Preset key and then Preset All key Connect the power sensor to the TG Output Set the MS2661N as shown below Set the TG output level to 0 dBm and ON Measure the TG output level with the power meter Changing the Center Freq of the MS2661N as shown in the table on the next page repeat the steps 3 to 5 above 6 41 SECTION 6 PERFORMANCE TESTS 6 42 TG Output Level Flatness Test Output level Frequency Hz dBm 50M 100M OdB reference SECTION 6 PERFORMANCE TESTS Service If the MS2661N is damaged or does not operate as specified contact your nearest Anritsu dealer or business office for repair When you request repair provide the following information a Model name and serial number on rear panel b Fault description c Name of a personnel in charge and address for contact when fault confirmed or at a completion of repair 6 43 SECTION 6 PERFORMANCE TESTS 6 44 SECTION 7 STORAGE AND TRANSPORTATION This section describes the long term storage repacking and transportation of the MS2661N as well as the regular care procedures and the timing TABLE OF CONTENTS Cleaning 7 3 Storage Precautions uide ede dee uet cn di dece de a et ew Edd po 7 4 Precautions before 5 2022024200 00
99. weeping Press this key after pressing the Shift key The initial default is continuous sweeping 9 Recall This executes recall save Recall Reads measurement parameters and waveform data from internal memory or memory card Save Saves measurement parameters and waveform data to internal memory or memory card 10 Measure This menu is for performing the various application measurements including frequency measurement noise measurement adjacent channel leakage power measurement etc 11 TG This sets the tracking generator function 12 Display This section is for selecting the trace waveform Normally in the frequency domain up to two trace waveforms can be displayed The zero span Time Domain mode is selected simply by pressing the Time key A B Displays trace A or B waveform in frequency domain A B A BG Displays trace A and B waveforms simultaneously or displays trace A and BG background frequency spectrum including trace A simultaneously Time Switches to zero span Time domain mode to display time domain waveforms A Time Displays trace A and the time domain waveform simultaneously 13 Trig Gate This sets the trigger gate and TV image monitoring functions Trig Gate Sets the sweep start trigger and gate to control wave form data write timing functions TV Monitor Don t use in MS2661N 14 Coupled Function This sets the RBW VBW sweep time and input attenuator 15 Entry These keys set the numer
100. x 10 day Reference oscillator frequency stability T Extracts part of performance which can cover the measurement range of the test item 6 5 SECTION 6 PERFORMANCE TESTS Performance Test The warm up time depends on the test item For test item other than oscillator frequency warm up the equipment for at least for thirty minutes and test the performance after the MS2661N stabilizes completely Also begin measurement after taking the warm up time of the calibration instrument into full consideration In addition the test must be conducted at room temperature there must be little AC power supply voltage fluctuation and no noise vibration dust humidity etc Reference oscillator frequency stability The 10 MHz reference oscillator is tested for frequency stability Stability is determined by measuring frequency variation after 24 hours and after 48 hours of power on at ambient temperatures of 0 C and 50 C 1 Specifications Reference oscillator Frequency 10 MHz e Aging rate lt 2 x 103 day After 24 hour warm up at 25 C 5 C e Temperature stability lt 5 x 10 at 0 and 50 C referred to frequency at 25 C 2 Test instruments Frequency counter MFI601A e Frequency standard with stability of 1 x10 day 6 6 4 SECTION 6 PERFORMANCE TESTS Trig Gate Int 10V 1 WARNING 1 Frequency standard OUTPUT Fr
101. y WARNING A This equipment cannot be repaired by the user DO NOT attempt to open the cabinet or to disassemble internal parts Only Anritsu trained service personnel or staff from your sales representative with a knowl edge of electrical fire and shock hazards should service this equipment There are high voltage parts in this equipment presenting a risk of se vere injury or fatal electric shock to untrained personnel In addition there is a risk of damage to precision parts This equipment should be used in the correct position If the cabinet is turned on its side etc it will be unstable and may be damaged if it falls over as a result of receiving a slight mechanical shock And also DO NOT use this equipment in the position where the power switch operation is difficult Replacing Fuse CAUTION Cleaning Check Terminal 3 For Safety CAUTION A Before Replacing the fuses ALWAYS remove the power cord from the poweroutlet and replace the blown fuses ALWAYS use new fuses of the type and rating specified on the fuse marking on the rear panel of the cabinet T5A indicates a time lag fuse There is risk of receiving a fatal electric shock if the fuses are replaced with the power cord connected Keep the power supply and cooling fan free of dust Clean the power inlet regularly If dust accumulates around the power pins there is a risk of fire Keep the cooling fan clean so that the ventilation holes
102. y accuracy Resolution bandwidth selectivity Sideband noise Amplitude display linearity Second harmonic distortion Input attenuator switching error Sweep time and time span accuracy Attenuator MN510C Frequency 100 MHz Maximum attenuation 70 dB resolution 0 1 dB possible with calibrated data Amplitude display linearity Input attenuator switching error T Extracts part of performance which can cover the measurement range of the test item SECTION 6 PERFORMANCE TESTS Instruments Required for Performance Test 2 2 Recommended instrument name Model name Power meter ML4803A Power sensor MA4601A Required Performance t Main instrument accuracy 0 02 dB Frequency range 100 kHz to 3 GHz depending on the power sensor type Frequency range 100 kHz to 3 GHz Measurement power range 30 to 10 dBm Input connector N type Test item Frequency response Input attenuator switching error TG output level Frequency response Input attenuator switching error TG output level Low pass filter M 238C SAGE L20CA072 Attenuation 270 dB frequency 2 10 MHz and GHz Second harmonic distortion Frequency counter MF1601A 10 MHz measurement possible Number of display digits 10 External reference input 10 MHz possible Reference oscillator frequency stability Frequency standard Frequency 10 MHz Stability lt 1

MS2661N Spectrum Analyzer Operation Manual Vol. 1 ANRITSU

Contents

Download Pdf Manuals

Related Search

Related Contents