Tektronix Welding System TSG 601 User's Manual
Contents
1. Figure 17 Shallow Ramp 10 possible amplitudes B Y and R Y TSG 601 User Manual 45 Appendix A Characteristics 700 7 Word 940 10 bit mV 350 f 777777777 0 Word 64 10 bit 0 0 us 5 41 9 78 1437 18 96 44 96 Figure 18 625 Line Mod Pulse and Bar Y 196 3 mV 0 0 us 9 78 14 37 Figure 19 625 Line Mod Pulse and Bar B Y 248 1 mV 0 0 us 9 78 14 37 Figure 20 625 Line Mod Pulse and Bar R Y 46 TSG 601 User Manual Appendix A Characteristics 700 7 Word 940 10 bit mV 350 f 0 A ii Word 64 10 bit 00 467 us 11 48 18 22 44 22 Figure 21 525 Line Mod Pulse and Bar Y 0 0 11 48 us Figure 22 525 Line Mod Pulse and Bar B Y 248 1 mV 0 0 11 48 us Figure 23 525 Line Mod Pulse and Bar R Y TSG 601 User Manual 47 Appendix A Characteristics 0 5 MHz 1 MHz 2 MHz 3 MHz 4 MHz 5 MHz 5 75 MHz i 0 0 0 us 17 0 us 52 67 Figure 24 60 Line Sweep with Markers Y 1 0 E MHz MHz MHz MHz MHz MHz 350 7 2 75 MHz 1 1 uff A ui 3rd Marker 49 26 17 0 us 0 74 0 0 us Figure 25 60 Line Sweep with Markers B Y and R Y 48 TSG 601 User Manual Appendix A Characteristics 500 kHz 525 3507 175 0 0 us 26 74 Figure 26 500 kHz Bowtie reduced amplitude Y 502 kHz 175 175 0 0 us 26 74 Figure 27 5002. Operating Basics Audio Grour 4 1 4 3 Use the and keys to select the desired group of audio channels 1 4 5 8 9 12 or 13 16 Press ENTER to confirm the selection 4 Press any rectangular key to exit the Audio menu or use the W keys to go to the next selection within the Audio menu Specifying Inserted Audio Channels in the Group When embedded audio is enabled there must be at least two chan nels selected This menu item allows you to select channels 1 and 2 channels 3 and 4 or channels 1 2 3 and 4 1 If necessary enter the Audio menu press Shift then Audio On Off 2 Use the down key to scroll to the Audio Channel Selection item and press the ENTER key The display will look something like this Audio Channel a 127374 ON 3 Use the and p keys to select the audio channel set Press the ENTER key to confirm the selection 4 Press any rectangular key to exit the Audio menu or use the W keys to go to the next selection within the Audio menu Specifying Audio Channel Frequencies The TSG601 allows the selection of one of 26 different frequencies plus mute for each individual channel within the group The fre quency of each channel within the group will be the same in all the groups To change the frequency assignments do the following 1 Ifnecessary enter the Audio menu press Shift then Audio On Off TSG 601 User Manual 13 Operating Basics 14 2
3. TSG 601 User Manual 15 Operating Basics 16 Saving Storing Presets and IDs 1 4 Press Shift and then Recall Note that the ID first shown on the display always indicates the current most recently recalled ID Scroll through the STORE ID 1 through 8 and STO PRESET 1 through 4 locations with the left right arrow keys The first line of any ID message already stored in the location will be shown in the bottom line of the display use the W key to see the second message line Remember that storing the current settings or ID will overwrite the contents of the Preset or ID location When the desired storage number is displayed press ENTER to save the current ID or Instrument settings If you have stored an ID it will replace the old contents on the bottom display line Press any rectangular key to exit the Store function Note that IDs are normally saved when they are edited through the ID menu see Editing ID messages page 10 You may use the Recall Store button however if you wish to copy the current ID to another memory location Remember that the current ID is the last message recalled through the ID menu or Recall the ID will be co pied and the previous contents of the ID location overwritten even when no message appears in the TSG 601 output ID Off A preset includes all of the instrument settings in effect when the preset is saved including the current output
4. To Avoid Fire or Personal Injury Observe All Terminal Ratings To avoid fire or shock hazard observe all ratings and markings on the product Consult the product manual for further ratings information before making connections to the product The common terminal is at ground potential Do not connect the common terminal to elevated voltages Replace Batteries Properly Replace batteries only with the proper type and rating specified Recharge Batteries Properly Recharge batteries for the recommended charge cycle only Use Proper AC Adapter Use only the AC adapter specified for this product Do Not Operate Without Covers Do not operate this product with covers or panels removed Use Proper Fuse Use only the fuse type and rating specified for this product Do Not Operate With Suspected Failures If you suspect there is damage to this product have it inspected by qualified service personnel Do Not Operate in Wet Damp Conditions Do Not Operate in an Explosive Atmosphere TSG 601 User Manual v General Safety Summary vi Safety Terms and Symbols Terms in This Manual These terms may appear in this manual WARNING Warning statements identify conditions or practices that could result in injury or loss of life CAUTION Caution statements identify conditions or practices that could result in damage to this product or other property Terms on the Product These terms may appear on the product DANGER i
5. Unused 19 0000 0000 Unused 20 0000 0000 Unused 21 0000 0000 Unused 22 0 3 0000 Reserved 4 7 0000 Bytes 0 21 are reliable 23 01010111 Channel status cyclic redundancy character Table 8 525 59 94 Embedded Serial Audio Sample Distribution Analog Field 1 Analog Field 2 Transmitted Transmitted Line Numbers Samples CS ET E 11 o ara 0 12 o 275 2 0 53 316 53 4 101 364 101 4 113 376 113 4 125 388 125 4 TSG 601 User Manual 33 Appendix A Characteristics Table 8 525 59 94 Embedded Serial Audio Sample Distribution Cont Transmitted Transmitted Line Numbers Samples 137 400 137 4 149 412 149 4 209 472 209 4 257 520 257 4 All Other Lines 3 1 Line 13 has 4 samples in fields 1 5 and 9 Table 9 625 50 Embedded Serial Audio Sample Distribution Analog Field 1 Analog Field 2 Transmitted Line Numbers Samples 317 4 318 Transmitted Line Numbers Samples ol WwW Bo lo aD 15 25 35 45 55 w Ww Ww N lt lt Ze I No m gt es es q E gt ww D W See B ae Ba BY Be Oo Oo oea co Ww ND o WwW a Gi 34 TSG 601 User Manual Appendix A Characteristics Table 9 625 50 Embedded Serial Audio Sample Distribution Cont Transmitted aa Transmitted Line Numbers Samples Line Numbers Samples 85 397 84 4 135 447 134 4 185 497 184 4 225 537 224 4 235 547 234 4 275 587 274 4 All Other Line
6. had a minimum warm up of 20 minutes Table 3 Serial Digital Video Output Characteristic Performance Supplemental Information Requirements Connectors 3BNCs 75 Q Number of Outputs 1 component serial video Digital Format CCIR 601 Component 525 625 8 or 10 bits data scrambled NRZI complies with CCIR 656 and SMPTE 259M 270 Mb s 15Q BitRate Source Impedance TSG 601 User Manual 29 Appendix A Characteristics Table 3 Serial Digital Video Output Cont Characteristic Performance Supplemental Information Requirements Return Loss gt 15 dB 5 MHz 270 MHz Instrument switched on Termination Detector Triggers display Ed symbol when return loss of the signal path is lt 10 dB approximates termina tion impedance of lt 37 5 Q and gt 150 Q Signal Amplitude Variable from 600 mV to 1000 mV in the following steps Coarse 100 mV increments on even 100 mV levels Fine 20 mV increments Absolute accuracy at 800 mV setting 800 20 mV Relative accuracy Coarse increments 100 8 mV From last 100 mV setting Fine increments 20 8 mV DC Offset 0 0 5 Volts Rise and Fall Times 400 1000 ps 20 to 80 amplitude points J itter less than 360 ps over one line Error Detection Ancillary Active picture CRC 0 AP CRC Data Tek proprietary on lines 9 amp 272 525 or 5 amp 318 625 EDH SMPTE RP 165 Table 4 Cable Simulator Characteristic Performance Supplemental Information Requirem
7. xx q gt ENTER 5 LCD Contrast use the lt and keys to adjust display contrast to compensate for various viewing angles and ambient lighting 6 Signal Ampl CAL Press ENTER 6 Signal Amplitude Calibrate please see the TSG 601 Service Manual p n 070 8911 XX for further information CAUTION Changing this setting will affect the serial video output amplitude and may give unexpected results This utility should be used by Qualified Service Personnel ONLY TSG 601 User Manual 57 Appendix C User Service 10 7 Format Select Standard 625 lt p Format Set use the and keys to select between 625 50 Hz and 525 60 Hz 8 Software Vx x Signals Vx x Software Signal versions note these numbers in any correspon dence to Tektronix about your TSG 601 9 KERNEL CHECK SUM ENTER Kernel Checksum This information is used during manufacture and has no pertinence to operation or adjustment of the TSG 601 10 XILINIX CHECK SUM ENTER Xilinx Checksum This information is used during manufacture Preventive Maintenance Under average conditions the TSG 601 should receive preventive maintenance every 2000 hours This is approximately one year of operation Preventive maintenance includes cleaning visual inspec tion a performance check and if necessary calibration See the Ser vice manual for performance verification and adjustment procedures CAUTION The TSG 601 case is made of mold
8. 30 Convergence Horizontal Lines Y only 50 Figure 31 Active Picture Markers vertical limits 51 Figure 32 Active Picture Markers horizontal limits 51 Figure 33 The Significance of the Active Picture Markers 52 List of Tables Table 1 Test Signal Characteristics 26 Table 2 Encoding Parameters 28 Table 3 Serial Digital Video Output 29 Table 4 Cable Simulator aussen ere 30 Table 5 Character Identification 31 Table 6 Signal Characteristics for Embedded Serial Audio 31 Table 7 Audio Channel Status Bits 32 Table 8 525 59 94 Embedded Serial Audio Sample Dist 33 Table 9 625 50 Embedded Serial Audio Sample Dist 34 Table 10 Physical Characteristics 36 Table 11 Environmental Characteristics 36 Table 12 75 and 100 Color Bars Timing 37 Table 13 Pluge Timing 2 2 0 0 20 0 eeees 41 Table 14 5 Step Staircase and Modulated 5 Step Timing 42 Table 15 Active Picture Markers Timing 51 TSG 601 User Manual ii Contents iv TSG 601 User Manual ee E General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it To avoid potential hazards use this product only as specified Only qualified personnel should perform service procedures
9. Scroll down to the Audio Frequency Selection item and press the ENTER key The display will resemble this CH 2 3 4 420902 AdB 3 Use the lt and keys to select the desired audio channel and use the A and Y keys to select the frequency for that channel Press the ENTER key to confirm these choices If a change was made the display will momentarily show the channel numbers that have new frequency assignments 4 Press any rectangular key to exit the Audio menu or use the W keys to go to the next selection within the Audio menu Changing Audio Channel Amplitudes Each audio channels output amplitude may be set from O dBFS to 20 dBFS in 1 0 dB increments The following steps show how to do this 1 If necessary enter the Audio menu press Shift then Audio On Off 2 Scroll down to the Audio Amplitude Selection item and press the ENTER key The display will look something like this CH 2 3 4 de Wears 3 Use the and keys to select the desired audio channel and use the A and Y keys to select the amplitude for that channel Press the ENTER key to confirm these choices 4 Press any rectangular key to exit the Audio menu or use the W keys to go to the next selection within the Audio menu TSG 601 User Manual Operating Basics Audio Channel ID Source ID in the audio channel status bits may be enabled or dis abled through this menu item Channel ID s are preset
10. an appropriate battery charger For safety read and follow the battery charger instructions Do NOT attempt to recharge standard alkaline batteries After a minute with no key press the display back light will be dimmed to conserve battery charge To guard against battery discharge if you forget to turn the TSG 601 off enable Auto Power Down through the Diagnostic menu see page 56 The TSG 601 can sense low battery voltage It will warn you when the charge is sufficient for approximately ten more minutes of operation The instrument will shut itself down when the bat tery voltage becomes too low for reliable operation See the Bat tery hints in Appendix C beginning on page 55 of this manual The ON key toggles instrument power On and Off TSG 601 User Manual Operating Basics Keypad and Display Conventions Please see the Instruction card p n 070 8909 00 supplied with your TSG 601 for a tour of the keypad and an explanation of the display symbols For your convenience the following panels are excerpted from the card Display Symbols Auto power down enabled symbol rotates use Diagnostic menu to disable hold Lock Out down and press ON to enter the Diagnostic menu Improper signal path termination E Shift press Shift again to Shift Lock E Shift Lock press Shift again to unlock o Lockout enabled press Lock Out to unlock 13 Blank ID position will not obscure te
11. and 310 Lines 25 through 309 Lines 21 and 262 Lines 22 through 261 Table 2 Encoding Parameters Characteristic Standards Conformance Coded Signals Samples per complete line Luminance Y Color Difference B Y R Y Sampling Structure 28 Information CCIR rec 601 Y B Y and R Y 525 60 625 50 858 864 429 422 Orthogonal line field and picture repetitive R Y and B Y samples co sited with odd 1st 3rd 5th etc Y samples in each line TSG 601 User Manual Appendix A Characteristics Table 2 Encoding Parameters Cont Characteristic Information Sampling Frequency Luminance Y 13 5 MHz B YandR Y 6 75 MHz Form of Coding Uniformly quantized PCM 10 bits per sample for the luminance signal and each color difference signal Samples Digital Active Line Luminance Y B Y and R Y Video Signal Q uantization Level Correspondence Luminance Y 720 360 10 bit video quantization levels 0 to 1023 Spans 877 quantization levels with black 0 mV corre sponding to level 64 and peak white 700 mV correspond ing to level 940 B Y and R Y Spans 897 quantization levels in the center of the quantiza tion scale Level 512 corresponds to 0 mV level 64 to 350 mV and level 960 to 350 mV NOTE Performance Requirements in the following tables are valid only if the instrument has been adjusted at approximately 25 C is being operated within environmental limits see Table 11 and has
12. kHz Bowtie reduced amplitude B Y and R Y 0 0 us 26 74 Figure 28 Bowtie Markers Y channel only TSG 601 User Manual 49 Appendix A Characteristics Pulse HAD 225 ns 0 0 us 4 37 48 89 Figure 29 Convergence Vertical Lines Y channel only 0 74 52 67 0 0 us Figure 30 Convergence Horizontal Lines Y only 50 TSG 601 User Manual Appendix A Characteristics 700 mY 0 A B 0 0 us Figure 31 Active Picture Markers vertical limits Y channel only 0 0 us E Figure 32 Active Picture Markers horizontal limits all channels Table 15 Active Picture Markers Timing 625 50 Y 625 50 B R Y 525 60 Y 525 60 B R Y w po pa 025 CUT DS PE 53 18 TSG 601 User Manual 51 Appendix A Characteristics First full line in an analog field Es First and last full amplitude samples permitted by nominal analog blanking Last full line in an analog field First and last digital active picture samples 2 Figure 33 The Significance of the Active Picture Markers 52 TSG 601 User Manual Appendix B Replaceable Parts The following Replaceable parts for the TSG 601 are available through your local Tektronix Inc field office or representative It is important when ordering parts to include the following informa tion in your order Part number instrument type and number instru ment serial number and modification number if applicable De
13. of au dio The maximum output however is four channels at a time so the channels are divided into four groups of four channels Group 1 Channels 1 4 Group 2 Channels 5 8 Group 3 Channels 9 12 Group 4 Channels 13 16 TSG 601 User Manual 19 Operating Basics 20 Within the audio menus the channels are called channels 1 2 3 and 4 of the group that you are working in As there must be at least two channels AES EBU pairs selected when embedded audio is en abled you may select channels 1 and 2 channels 3 and 4 or channels 1 2 3 and 4 Separate frequencies and amplitudes may be assigned to each of the four channels The frequency and amplitude assigned to a channel will be the same for that channel in all four groups The frequency may be set to any of 26 provided frequencies or mute The ampli tude for each channel may be set in 1 dB increments from O dBFS to 20 dBFS The embedded audio function also provides a source ID for each channel This ID is enabled or disabled for the whole group of four channels at a time When enabled the source ID applies chl ch2 ch3 and ch4 to the appropriate channels Status Bits as shown in Table 7 Audio sample distributions are shown in Tables 8 and 9 The SDI Checkfield Signals SDI serial digital interface Checkfield signals also known as Pathological signals are designed to test the low frequency re sponse of serial digital video equipment The three SDI Checkfield
14. signals in the TSG 601 are defined in the proposed SMPTE Recom mended Practice RP 178 they are the Cable Equalization Equaliz er Phase Locked Loop PLL and Matrix Checkfields The Equalizer SDI Checkfield signal tests the automatic equalizer circuits of receiving equipment It has been arranged to create a seri al data stream with the maximum possible de content In practice the digital data contains a repeating pattern of 19 high or low states followed by one opposite state thus for the longest possible period several times each field the signal will be essentially dc with opposite polarity states occurring only once in every twenty clock intervals The PLL Checkfield Signal tests the equipment s ability to lock to the serial data stream It has been configured to give the serial data the maximum possible low frequency content and the fewest possible zero crossings that is the longest possible time between high low or low high transitions in the signal In practice the data contains several times each field a repeating pattern of 20 high states fol TSG 601 User Manual Operating Basics lowed by 20 low states This is the lowest frequency possible given the data encoding schemes that are specified in the serial digital vid eo standards The third TSG 601 SDI Checkfield signal is a matrix of the other two For a much more complete discussion of SDI Check Fields and their use please see SMPTE RP 178 an
15. with standard AA batteries 1 2 1 5 V nominal or with the optional rechargeable battery pack If you use NiCad AA batteries or the optional battery pack be sure to set the battery type to rechargeable through the diagnostic menu see page 56 Failure to do so can result in damage to the batteries NOTE Do not disconnect the AC adapter when the TSG 601 is switched on Some user settings may be lost perhaps causing unex pected results the next time the instrument is switched on If you have any questions regarding the operation of this instrument please contact your nearest Tektronix representative or field office In the United States and Canada you may also call the Tektronix information number 1 800 TEK WIDE 1 800 835 9433 between 8 00 am and 5 00 pm Pacific time TSG 601 User Manual 1 TSG 601 User Manual y Operating Basics Thank you for choosing the Tektronix TSG 601 and thank you for reading this manual To begin using the instrument as quickly as pos sible see Using your TSG 601 beginning on page 5 For even more information on selected topics turn to Details on page 17 First though read the next section for tips on supplying power to the instrument Gene CS z oO A ra Pl 2lS la 831 55 s ol ico A COD CO A Powering the Instrument The TSG 601 is DC powered You may power it with the standard AC adapter the o
16. Active Picture CRC APCRC The checkwords are transmitted in the ancillary data area of the vertical interval portion of the digital video data stream Because some digital video equipment strips or ignores the vertical interval Tektronix engineers have devised another way of using the Active Picture CRC that does not depend on a checkword embedded in the serial data stream It is called the Zero Active Picture CRC GAPCRC For the VAPCRC the transmitting device computes the APCRC as usual until the last five samples of the picture then the transmitter produces five samples that will force the APCRC to equal zero If the receiving equipment also computes an APCRC of zero from the received digital video we can be as confident of error free transmission as with the standard APCRC even when the vertical interval portion is missing from the serial video data TSG 601 CRC options The TSG 601 can generate Normal FFCRC Normal APCRC Erroneous FFCRC Erroneous APCRC APCRC The Normal CRCs are calculated and encoded in accordance with the proposed SMPTE recommended practice RP 165 The erro neous or forced error CRCs are created by beginning and ending the computation one sample later than specified in RP 165 The erro neous CRCs therefore will always differ from the correct value TSG 601 User Manual Operating Basics ID Messages The TSG 601 lets the user edit ID messages off line This means that you ca
17. Data Words 1 If necessary enter the Output menu press Shift then Output Ampl 2 Scroll down to the Video Data Word Length item with the down arrow key and press ENTER to reach the word length selection display 3 Use the or key to toggle between 8 and 10 bits press ENTER to confirm the selection 4 Press any rectangular key to exit the Output menu Specifying CRC Content of the Signal 1 Enter the CRC menu press Shift then CRC On Off The display will resemble the following illustration FECRE ar BPCEC ERR ENTR HORM 2 Use the keys to select FFCRC Full Field CRC or APCRC Active Picture CRC Notice that the up down symbol on the second display line will move to indicate the chosen type of CRC 3 Use the A Y keys to select the type of CRC to be encoded into the output The choices for the two types of CRCs are FFCRC NORM or ERR Error APCRC NORM ZERO or ERR Error See CRCs on page 17 for an explanation of these options TSG 601 User Manual 9 Operating Basics 10 4 Once the desired CRC choices appear on the display press ENTER to accept invoke the selections 5 Press any rectangular key to exit the CRC menu 6 Toggle the inclusion of CRC data or errors on and off by pressing the CRC On Off key The CRC status will be reported on the second line of the display alternating with the ID status Inserting ID Messages m Toggle the ID
18. E AA AA 0 0 us A c E F Figure 8 625 Line Pluge 2 Y channel only Table 13 Pluge Timing 625 amp 525 a A AAA EEE lines 55 98 Dee ee ee ee A EEE lines 99 142 mV DR ER ste E ri 2 ra a AO Cr E cado ra np lines 143 185 110 lines 186 229 0 0 us A C E F Figure 9 525 Line Pluge 2 Y only TSG 601 User Manual 41 Appendix A Characteristics 703 2 562 6 mV 421 9 mV mV 281 3 mV 140 6 mV 4 0 Word 64 10 bit 0 0 us B D E F G Figure 10 5 Step Staircase and Modulated 5 Step Y 210 9 mV 0 0 us A B C D E F G Figure 11 5 Step Staircase B Y and R Y Table 14 5 Step Staircase and Modulated 5 Step Timing 39 70 A B C D E 625 amp 525 42 TSG 601 User Manual Appendix A Characteristics mV R Y 94 4 mV 0 0 us 6 96 46 30 Figure 12 625 Line Modulated 5 Step B Y and R Y mV 157 3 B Y 157 3mV 0 0 us 6 96 46 30 Figure 13 525 Line Modulated 5 Step B Y and R Y TSG 601 User Manual 43 Appendix A Characteristics 0 0 us 7 48 45 56 47 04 Figure 14 Limit Ramp Y 350 ee mV Wo 396 9 mV 0 0us 5 70 7 26 47 33 Figure 15 Limit Ramp B Y and R Y 44 TSG 601 User Manual Appendix A Characteristics 0 0 us 1 78 52 67 Figure 16 Shallow Ramp 10 possible amplitudes Y 350 0 mV 281 1 212 2 143 3 74 4 5 6 63 3 132 2 201 1 270 0 1 78 52 67
19. LOW Message The warning BATTERY LOW will appear on the second line of the TSG 601 display when the battery voltage drops below a prede termined level The level depends on the Battery Type set in the diagnostic menu see page 57 The TSG will operate for approxi mately ten minutes after the message first appears For best results replace or recharge the batteries when you first see this warning Low battery Shut Down To prevent erratic operation at very low power levels the TSG 601 will shut itself down if the battery voltage drops below a second lower threshold that also depends on the Battery Type setting TSG 601 User Manual 55 Appendix C User Service Low battery shut down can happen with little or no warning if for instance the instrument has been left on by mistake with Auto Power Down disabled In such cases the TSG 601 is likely to shut itself down almost immediately the next time you switch it on If this hap pens Install fresh batteries or operate the instrument with the AC adapter and Confirm that the diagnostic menu Battery Type setting is appropriate The shut down threshold is higher for rechargeable batteries than for disposable Therefore you will receive a false BATTERY LOW message and may experience premature shut down if using Alkaline batteries when the Battery Type is set to rechargeable On the oth er hand NiCad batteries may be damaged they can lose their re chargeabili
20. Timing ane 625 50 525 60 CUITE 0 37 us 46 37 m E Er 33 26 TSG 601 User Manual 37 Appendix A Characteristics 262 5 mV 262 5 mV 173 9 mV 219 8 mV Word 960 10 bit 1 l i I l l i l I B Oo LO 0 0 us 0 0 us 350 Figure 2 75 Color Bars B Y 350 TSG 601 User Manual Figure 3 75 Color Bars R Y 38 Appendix A Characteristics 700 1 nn Word 940 10 bit 620 2 mV 01 Word 64 10 bit A 0 0 us Figure 4 100 Color Bars Y 507 eiiieaen e Word 960 10 bit 231 9 mV 118 1 mV 118 1 mV 231 9 mV 350 1 Word 64 10 bit Figure 5 100 Color Bars B Y TSG 601 User Manual 39 Appendix A Characteristics 850s gt 20 50035 5020555 Word 960 10 bit mV 293 1 mV l l l l l l l 1 l I 1 i I 1 1 I 1 amen 350 Word 64 10 bit 0 0 us B C D E F G H Figure 6 100 Color Bars R Y 525 60 lines 143 212 700 ne Te 625 50 lines 167 250 mV 525 60 lines 72 142 TOS rl ra ars 0 0 us A C E F Figure 7 Pluge 1 Y only 40 TSG 601 User Manual Appendix A Characteristics 700 lines 63 114 450 lines 115 166 mY lines 167 218 200 SS Ses SESS Sse SSS SSS A SSS OSS SA FAS 219 270 1104 8 S355 2222 DESEN RS ES
21. User Manual Tektronix TSG 601 Serial Digital Generator 070 8910 03 Copyright Tektronix Inc 1994 All rights reserved Printed in the U S A Tektronix products are covered by U S and foreign patents issued and pending Information in this publication supersedes that in all previously published material Specification and price change privi leges reserved For further information contact Tektronix Inc PO Box 1000 Wilsonville OR 97070 1000 U S A Phone 503 627 7111 TLX 192825 TWX 910 467 8708 Cable TEKWSGT TEKTRONIX and TEK are registered trademarks of Tektronix Inc Warranty Tektronix warrants that this product will be free from defects in ma terials and workmanship for a period of one 1 year from the date of shipment If any such product proves defective during this warranty period Tektronix at its option either will repair the defective prod uct without charge for parts and labor or will provide a replacement in exchange for the defective product In order to obtain service under this warranty Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performance of service Cus tomer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix with shipping charges prepaid Tektronix shall pay for the return of the product to Customer if the shipment is to a loc
22. ation within the country in which the Tektronix service center is located Customer shall be responsible for paying all shipping charges duties taxes and any other charges for products returned to any other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish service under this warran ty a to repair damage resulting from attempts by personnel other than Tektronix representatives to install repair or service the prod uct b to repair damage resulting from improper use or connection to incompatible equipment c to repair any damage or malfunction caused by the use of non Tektronix supplies or d to service a prod uct that has been modified or integrated with other products when the effect of such modification or integration increases the time or difficulty of servicing the product This warranty is given by Tektronix with respect to this product in lieu of any other warranties expressed or implied Tektronix and its vendors disclaim any implied warranties of merchantabil ity or fitness for a particular purpose Tektronix responsibility to repair or replace defective products is the sole and exclusive rem edy provided to the customer for breach of this warranty Tektro nix and its vendors will not be liable for any indirect special incidental or consequential damages irrespective of whether Tektron
23. d Tektronix publication 25W 7203 1 A Guide to Digital Television Systems and Measure ments TSG 601 User Manual 21 Operating Basics 22 TSG 601 User Manual Appendices A AAA AAA Appendix A Characteristics The information in this section is included for the convenience of the TSG 601 operator It is not intended as a complete list of guaranteed specifications The waveform illustrations represent properly de coded output For a full list of instrument specifications as well as performance verification and adjustment procedures please see the TSG 601 Service Manual Tektronix p n 070 8911 XX NOTE Shielded cables were used in the EMI certification of this instrument therefore it is recommended that shielded cables be used when operating EC 92 Safety Standard Compliance The following safety standards apply to the TSG 601 m ANSI S82 Safety Standard for Electrical and Electronic Test Measuring Controlling and Related Equipment 1988 m CAN CSA C22 2 No 231 M89 CSA Safety Requirements for Electrical and Electronic Measuring and Test Equipment m JEC1010 1 Safety Requirements for Electrical Equipment for Measurement Control and Laboratory Use 1990 m UL1244 Standard for Electrical and Electronic Measuring and Testing Equipment Second Edition 1980 TSG 601 User Manual 25 Appendix A Characteristics Specification Tables Table 1 Test Signal Characteristics Characteri
24. e aan nee 11 Inserting Embedded Audio 12 Specifying Inserted Audio Channels in the Group 13 Specifying Audio Channel Frequencies 13 Changing Audio Channel Amplitudes 14 Audio Channel ID dior orme urar a 15 Cable Simulation esse se er 15 Detecting Incorrect Termination 15 Saving Storing Presets and IDs 16 Recalling Presets and IDs a rer 16 Details SSSR cw Ed Nas 17 CROS A A ee 17 ID Messages Gua it tio 19 Embedded Audio eliana 19 The SDI Checkfield Signals 2 2 2222 a 20 Appendix A Characteristics 25 Safety Standard Compliance 25 Specification Tables spam aaa ASSES aan 26 Waveform Diagrams 37 Appendix B Replaceable Parts 53 TSG 601 User Manual i Contents Appendix C User Service 55 Battery hints So su we ot en ren 59 The BATTERY LOW Message 55 Low battery Shut Down 55 The Diagnostic Menu sr pas De SR uses 56 Preventive Maintenance sisi jas eae acres oe Mh oa Rues 58 List of Figures Figure 1 75 Color Bars Y 37 Figure 2 75 Color Bars B Y 38 Figure 3 75 Color Bars R Y 38 Figure 4 100 Color Bars Y 39 Figure 5 100 Co
25. e location of a message that is not displayed you must first recall it through the ID menu or the Recall menu 1 Enter the ID menu press Shift then ID On Off if necessary With the and W keys scroll to the Position ID menu item Press ENTER de A Use the arrow keys to move the message horizontally H and vertically V in the picture 5 When the ID occupies the desired position press ENTER to save the new location in memory and return to the ID menu If you press any rectangular key instead of ENTER the ID will remain in its new position but will revert to the original location the next time it is recalled from memory 6 As usual press any rectangular key to exit the ID menu Setting up an ID Cycle 1 Edit and save the ID messages that you want to cycle see Editing ID messages page 10 Note the numbers of the IDs and the order in which they should appear 2 Scroll through the ID menu to reach the ID Cycle Setup item then press ENTER The display will resemble the following illustration Cycle ID Seesen 1 335 ENTER 3 Use the keys to move the underline cursor to one of the four sequence time intervals The IDs will appear in the order that their numbers appear from left to right on the display TSG 601 User Manual 11 Operating Basics 12 Use the A Y keys to select the number of the ID to appear during each interval Choose the hyphen it s bel
26. ed plastic Do not allow N water to get inside any enclosed assembly or component Do not clean any plastic materials with organic cleaning solvents benzene toluene xylene acetone or similar compounds because they may damage the plastic 58 TSG 601 User Manual
27. ents Length 5 4 dB 0 5 dB at 135 MHz Approximates a 50 meter length of Belden 8281 coax cable Return Loss gt 20 dB from 5 MHz to 270 MHz 30 TSG 601 User Manual Appendix A Characteristics Table 5 Character Identification Characteristic Information Characters Displayed Two lines of up to 16 Characters per line Display Position Moveable over the Safe Action area of the field Character Amplitude Black 70 mV equivalent White 630 mV equivalent Table 6 Signal Characteristics for Embedded Serial Audio Characteristic Performance Requirements Standards Conformance Encoding Format Audio Sampling Frequency Audio Channels Four channels at a time max Two AES EBU pairs one pair may be disabled at a time Quantized Resolution Audio Tone Frequency Audio Tone Amplitude Pre emphasis Channel Status Bits Audio Sample Distribution EEE TSG 601 User Manual Supplemental Information SMPTE 259M SMPTE 272M and SMPTE 125M Linear PCM two s complement binary representation 48 00 kHz locked to video Four groups with four channels per group Only one group may be selected at a time 20 bits User selectable for each channel 50 Hz 100 Hz 150 Hz 200 Hz 250 Hz 300 Hz 400 Hz 500 Hz 600 Hz 750 Hz 800 Hz 1 kHz 1 2 kHz 1 5 kHz 1 6 kHz 2 kHz 2 4 kHz 3 kHz 3 2 kHz 4 kHz 4 8 kHz 6 kHz 8 kHz 9 6 kHz 12 kHz 16 kHz and mute User selectable for each channel fro
28. format test signal ID and cycle setup Note that ID messages themselves are not stored Thus if a Preset remembers to display ID 4 for example the latest message in ID 4 will appear whenever that Preset is recalled Remember editing an ID message can have an affect on what you get when you recall a preset Recalling Presets and IDs 1 Press the Recall key Note that the ID first shown on the display always indicates the current most recently recalled ID Scroll through the RECALL ID 1 through 8 and RCL PRESET 1 through 4 locations with the amp gt keys The first line of an ID message will occupy the bottom line of the display use the y key to see the second line For example the TSG 601 User Manual Operating Basics factory ID 1 is Tektronix TSG601 Serial Digital The display will first look like this Recall IDH 14 Tektronix Tahal Pressing the W key will change it to this Recall IDR 14 Serial Digital You may find this feature useful if you save two or more IDs with the same first line of text 3 When the desired storage number is displayed press ENTER to recall the ID or Preset 4 Press any rectangular key to exit the Recall menu Details CRCs CRCs Cyclic Redundancy Codes are used in serial digital video systems as a means of error detection and handling EDH This sec tion attempts to explain CRCs and their use and freely paraphra
29. ix or the vendor has advance notice of the possibility of such damages EC Declaration of Conformity Tektronix Holland N V Marktweg 73A 8444 AB Heerenveen The Netherlands declare under sole responsibility that the TSG 601 Handheld Serial Component Generator meets the intent of Directive 89 336 EEC for Electromagnetic Compatibility Compliance was demonstrated to the following specifications as listed in the Official Journal of the European Communities EN 55011 Class A Radiated and Conducted Emissions EN 50081 1 Emissions EN 60555 2 AC Power Line Harmonic Emissions EN 50082 1 Immunity IEC 801 2 Electrostatic Discharge Immunity IEC 801 3 RF Electromagnetic Field Immunity IEC 801 4 Electrical Fast Transient Burst Immunity High quality shielded cables must be used to ensure compliance to the above listed standards Table of Contents Getting Started sussa Heise 1 Operating Basics as ns un 3 Powering the Instrument 32 28 na 3 Keypad and Display Conventions 5 Using your PSG GU aid era 5 Outputting Serial Video Test Signals 6 Adjusting the Output Amplitude 8 Controlling the Video Component Y Cr Cb Channels 8 Specifying 8 or 10 bit Data Words 9 Specifying CRC Content of the Signal 9 Inserting ID Messages sc 22 242304 eek 10 Editing ID Messages ans ae 10 Positioning ID Messages ss NE 11 Setting upan ID Cycl
30. lor Bars B Y 39 Figure 6 100 Color Bars R Y 40 Figure 7 Pluge 1 Y only a nee 40 Figure 8 625 Line Pluge 2 Y channel only 41 Figure 9 525 Line Pluge 2 Y only 41 Figure 10 5 Step Staircase and Modulated 5 Step Y 42 Figure 11 5 Step Staircase B Y and R Y 42 Figure 12 625 Line Modulated 5 Step B Y and R Y 43 Figure 13 525 Line Modulated 5 Step B Y and R Y 43 Figure 14 Limit Ramp Y 44 Figure 15 Limit Ramp B Y and R Y 44 Figure 16 Shallow Ramp Y 45 Figure 17 Shallow Ramp B Y and R Y 45 Figure 18 625 Line Mod Pulse and Bar Y 46 Figure 19 625 Line Mod Pulse and Bar B Y 46 Figure 20 625 Line Mod Pulse and Bar R Y 46 Figure 21 525 Line Mod Pulse and Bar Y 47 Figure 22 525 Line Mod Pulse and Bar B Y 47 ii TSG 601 User Manual Contents Figure 23 525 Line Mod Pulse and Bar R Y 47 Figure 24 60 Line Sweep with Markers Y 48 Figure 25 60 Line Sweep with Markers B Y and R Y 48 Figure 26 500 kHz Bowtie Y 49 Figure 27 500 kHz Bowtie B Y and R Y 49 Figure 28 Bowtie Markers Y channel only 49 Figure 29 Convergence Vertical Lines Y channel only 50 Figure
31. lse HAD 1000 ns 1 0 us Pulse Amplitude Yy 350 0 mV B Y 196 3 mV R Y 248 1 mV 2T Pulse HAD 200 ns Y channel only Mod Pulse and Bar 525 See Figures 21 22 and 23 lines 60 Hz 12 5T Pulse HAD 1562 5 ns in NTSC encodes to 12 5T modulated pulse 60 7 Pulse Amplitude Y 350 0 mV B Y 196 3 mV R Y 248 1 mV 2T Pulse HAD 200 ns Y channel only 60 Line Sweep W Markers See Figures 24 and 25 Amplitude 420 mV Frequency Range Y channel 250 kHz 5 75 MHz R Y B Y 125 kHz 2 75 MHz Marker Frequencies Y channel 0 5 1 2 3 4 and 5 MHz R Y B Y 0 25 0 5 1 1 5 2 and 2 5 MHz 500 kHz Bowtie See Figures 26 27 and 28 Y channel 500 kHz sine wave R Y B Y 502 kHz sine wave Amplitude 350 mV TSG 601 User Manual 27 Appendix A Characteristics Table 1 Test Signal Characteristics Cont Characteristic Convergence Amplitude Pattern Pulse HAD Equalizer SDI Checkfield PLL SDI Checkfield Matrix SDI Checkfield Field Timing 625 50 Equalizer PLL Field Timing 525 60 Equalizer PLL Active Picture Markers Field Timing 625 50 Vertical limits Horizontal limits Field Timing 525 60 Vertical limits Horizontal limits Information See Figures 29 and 30 525 mV 75 Crosshatch 14 horiz 15 vert lines 225 25 ns PerSMPTE RP 178 PerSMPTE RP 178 PerSMPTE RP 178 Lines 24 through 166 Lines 167 through 310 Lines 21 through 141 Lines 142 through 262 See Figures 31 32 and 33 and Table 15 Lines 24
32. m ol o w TSG 601 User Manual 7 Operating Basics Test Signal Direct Select Key Modulated 5 Step H Modulated Pulse and Bar 60 Line Sweep with Markers Bowtie Convergence Equalizer SDI Checkfield PLL SDI Checkfield Matrix SDI Checkfield Active Picture Markers Adjusting the Output Amplitude 1 Press the key marked Output Ampl 2 Select the desired output level with the arrow keys The A Y keys change the level to the next higher or lower 100 mV increment gt keys change it in 20 mV increments Holding an arrow key down will continually increase or decrease the level until it reaches its minimum or maximum Press any rectangular key to exit the Output Amplitude Adjust function Controlling the Video Component Y C Cp Channels 1 Enter the Output menu press Shift then Output Ampl and press ENTER to reach Channel Output Selection The display will look something like this Chami Y Cb Cr Sele UN UM UM Use the and keys to position the flashing underline cursor to the status ON or OFF of the channel you wish to change TSG 601 User Manual Operating Basics 3 Toggle the status with the or Y key The channel status will change instantly you don t have to press ENTER NOTE All three component channels default to ON whenever the TSG 601 is switched off and back on regardless of prior Channel Output settings Specifying 8 or 10 bit
33. m 0dB FS to 20 dB FS in 1 0 dB increments None implemented in data Uses default settings except that Source ID bits may be set to identify each channel with a fixed code See Table 7 525 See Table 8 625 See Table 9 31 Appendix A Characteristics Table 7 Audio Channel Status Bits 32 Function Professional use of channel status Source Sampling frequency locked 0 0 1 1 0 Normal Audio Mode 2 4 100 No emphasis 5 0 6 7 01 48 kHz sampling frequency 0001 Two channel mode 0001 192 bit block structure preamble indicates start of block 000 Maximum 20 bit audio sample data 000 Word length specified in bits 0 2 1 ND oo uo E OU 10 11 12 13 14 15 0 3 4 7 0 2 4 5 6 7 0 7 0 7 0 7 0 7 0 7 0 7 0 7 0 7 0 7 0 7 0 7 7 0 00 Reserved 0000 0000 Reserved 0000 0000 Reserved 0000 0000 Reserved 0000 0000 Source ID Disabled 01100111 Source ID Enabled ASCII c 0000 0000 Source ID Disabled 0110 1000 Source ID Enabled ASCII h 0000 0000 Source ID Disabled Source ID Enabled 0011 0001 ASCII 1 for channel 1 0011 0010 ASCII 2 for channel 2 0011 0011 ASCII 3 for channel 3 0011 0100 ASCII 4 for channel 4 Source ID Unused Unused Unused Unused Unused Unused Unused TSG 601 User Manual Appendix A Characteristics Table 7 Audio Channel Status Bits Cont 17 0000 0000 Unused 18 0000 0000
34. message or cycle on and off with the ID On Off key Editing ID Messages Please read ID Messages on page 19 before you first attempt to edit a TSG 601 ID 1 Enter the ID menu press Shift then ID On Off 2 Press the W key once to reach the Edit ID X menu item Note that the IDF first shown on the display always indicates the current most recently recalled ID 3 Use the horizontal arrow keys to display the number of the ID you want to edit then press ENTER 4 Use the arrow keys to move the character cursor Specify the character with the letter keys press Shift to select symbols and numbers The Sp key will enter a space blacking out the underlying test pattern The test pattern will show through a Blank Shift SP 5 When you have made all the desired changes press ENTER to save them Note pressing any rectangular key will abort the edit and exit the ID menu If the ID message you started with in step 3 was on screen when you began the edit the new message will take its place If not and you wish to insert the new message press the A key to reach the Recall ID X menu item select the ID number with the horizontal arrow keys and press ENTER 6 As usual press any rectangular key to exit the ID menu TSG 601 User Manual Operating Basics Positioning ID Messages NOTE Only the position of the currently displayed ID may be changed If you wish to change the pictur
35. n edit a message without affecting the instrument s out put or the ID currently inserted in the picture To help prevent inad vertent changes to the current ID the instrument will only insert ID messages that have been saved through the ID menu or the Store key In the TSG 601 there are eight numbered storage locations for ID messages ID 1 through ID 8 Each location contains a simple fac tory message when the instrument is new or immediately after a FACTORY RESET see page 57 The procedure for creating and displaying a new message is 1 Select an existing ID for editing 2 Change the message as desired see page 10 3 Save the changes by pressing ENTER and 4 Later recall that ID through the ID menu or the Recall key If you edit the current ID that is the one in the TSG output when you begin the edit the on screen message will change in step 3 If you edit a different IDA the message will not change in step 3 rath er you ll have to perform step 4 to insert the new message If you edit an ID that is part of a currently active ID cycle the new mes sage will take the place of the old one the first time the ID appears after step 3 To minimize the chance of outputting a test signal with an incorrect ID message please familiarize yourself with ID selection and editing before you use the TSG 601 in a critical application Embedded Audio The TSG 601 embedded audio function provides 16 channels
36. ndicates an injury hazard immediately accessible as you read the marking WARNING indicates an injury hazard not immediately accessible as you read the marking CAUTION indicates a hazard to property including the product Symbols on the Product These symbols may appear on the product A E CAUTION Double Refer to Manual Insulated Battery Recycling This product contains a Nickel Cadmium NiCd battery which must be recycled or disposed of properly For the location of a local battery recycler in the U S or Canada please contact RBRC 800 BATTERY Rechargeable Battery Recycling Corp 800 227 7379 P O Box 141870 www rbrc com Gainesville Florida 32614 TSG 601 User Manual Y AE Getting Started A Please note the following statements before using your TSG 601 CAUTION Attempting to operate the TSG 601 with an improper AC adapter can result in damage to the instrument To avoid damage USE ONLY AN APPROPRIATE DC POWER SOURCE Voltage must be 9 to 15 VDC the connector must have the NEGATIVE contact in the center and open circuit voltage of the power source must not exceed 18 VDC For best results use the AC adapter that is supplied with the instru ment If the supplied adapter is incorrect for the local AC power sup ply contact your nearest Tektronix representative WARNING Install or replace batteries only with the instrument switched OFF and the AC adapter disconnected Replace the batteries only
37. ow 1 to eliminate the interval If you want a blank interval that is a time gap between ID messages you must create an all blank ID to put in that interval When the correct information is in all four time interval posi tions press ENTER to confirm the cycle setup Press any rectangu lar key to abort the cycle edit To set the duration of each cycle time interval press the key to reach the ID Cycle time menu item Use the horizontal arrow keys to select the duration between one and nine seconds Press ENTER to confirm To replace the current ID with the ID cycle scroll through the ID menu to the ID Cycle OFF selection Press a horizontal arrow key to change the selection to ID Cycle ON then press ENTER The cycle will appear in the picture if toggled on with the ID On Off key Inserting Embedded Audio m Press the Audio On Off key to alternately enable and disable embedded audio in the serial data stream Though the TSG601 will provide 16 channels of audio it can only output a maximum of 4 channels at a time Therefore the 16 chan nels have been broken up into 4 Groups of 4 channels each Please read Embedded Audio on page 19 1 Enter the Audio menu press Shift then Audio On Off The display will look something like this Budio Grour selection ENTER 2 Go into the Audio Group Selection menu by pressing the ENTER key The display will change to TSG 601 User Manual
38. ptional 9 6 V NiCad battery pack eight standard AA batteries or a BP type battery pack with the correct voltage and polarity The external DC power connector is on the left side of the instrument see the illustration above Open the battery compart TSG 601 User Manual 3 Operating Basics ment by sliding the compartment door in the direction of the in scribed arrow until the door tabs line up with the slots in the case then remove the door When selecting a power source for your TSG 601 please remember Attempting to use an improper AC adapter can cause permanent damage to the instrument USE AN APPROPRIATE DC POWER SOURCE ONLY Voltage must be between 9 and 15 VDC the center contact of the connector must be NEGATIVE polarity and open circuit voltage must not exceed 18 VDC For best results use the adapter supplied with the instrument There is no need to remove the optional NiCad battery pack for recharging The TSG 601 will trickle charge the battery pack whenever the standard AC adapter is used It can take up to 16 hours to fully charge the battery pack Note that charging will occur only if the adapter supplies at least 12 V make sure that the adapter you use is appropriate for the local AC supply AA batteries are not included with the instrument buy them locally Rechargeable AA batteries may be used but they are NOT recharged automatically To recharge AA batteries remove them from the instrument and use
39. s 3 TSG 601 User Manual 3 Appendix A Characteristics Table 10 Physical Characteristics Characteristic Information Height 5 6 cm 2 2 in Width 9 1 cm 3 6 in Depth 19 1 cm 7 5 in Net Weight TSG 601 alone 0 48 kg 1 06 Ib With battery pack 0 68 kg 1 5 Ib Shipping Weight 1 50 kg 3 31 Ib includes AC adapter Table 11 Environmental Characteristics Characteristic Information Temperature Operating 0 C to 35 C 32 to 95 F Storage 30 C to 65 C 22 to 149 F Altitude Operating to 15 000 feet 4572 m IEC 1010 1 compliance to 2000 m Storage to 50 000 feet 15420 m Equipment Type Test Equipment Class Class Ill as defined in IEC 1010 1 Annex H Installation Category Category Il as defined in IEC 1010 1 Annex J Note Rated for indoor use only Pollution Degree 2 as defined in IEC 1010 1 Meets the requirements of NTSB Test Procedure 1A category Il 24 inch drop Pollution Degree Transportation 36 TSG 601 User Manual Appendix A Characteristics Waveform Diagrams NOTE The following diagrams represent the analog equivalents of the TSG 601 digital test signals Horizontal axis units are microse conds us after the start of Digital Active Video Unless specified in the caption each illustration represents both 525 line 60 Hz and 625 50 Hz signals a 2 Word 940 10 bit mV 465 2 mV A 0 0 us Figure 1 75 Color Bars Y Table 12 75 and 100 Color Bars
40. scription Tektronix Part No Instructions card 070 8909 00 Service Manual Optional accessory 070 8911 XX Rechargeable Battery Pack Optional accessory 119 4488 00 Carrying Pouch 016 1229 00 AC Adapter 119 4538 00 Case Assembly Top 614 0920 00 Case Assembly Bottom 614 0913 00 Battery Door 200 4075 00 LCD Display 119 4506 00 Rear Panel Assembly 333 4145 00 Fuse 4A 159 0363 00 TSG 601 User Manual 53 54 TSG 601 User Manual A AA Appendix C User Service Battery Hints For optimal battery life and capacity use the rechargeable NiCad battery pack Tektronix p n 119 4488 00 in full charge discharge cycles In other words fully discharge the battery pack before re charging and then charge the battery pack until fully charged approximately 16 hours A new battery pack will take a few charge discharge cycles to reach full capacity WARNING Install or replace batteries only with the instrument switched OFF and the AC adapter disconnected Replace the batteries only with standard AA batteries 1 2 1 5 V nominal or with a Tektronix rechargeable battery pack p n 119 4488 00 Setting the Auto Power Down page 56 and Battery Type page 57 functions in the diagnostic menu also have an impact on battery life The battery types are disposable Alkaline or rechargeable NiCad Setting the battery type changes the voltage thresholds for both the BATTERY LOW display message and low battery shut down The BATTERY
41. ses the proposed SMPTE recommended practice on the topic RP 165 Those familiar with the concepts should skip down to TSG 601 CRC Options below for a discussion of the available CRCs Checkwords CRCs are binary numbers that are computed from the digital samples in the serial digital video frame The CRCs serve a similar function as the Parity Bit in the familiar RS 232 serial inter face but with much more sophistication The transmitting device calculates the CRC from the information it is sending encodes it into a checkword and inserts the value into the transmitted data stream The receiving device calculates the CRC from the received informa tion decodes the received checkword and compares the two num TSG 601 User Manual 17 Operating Basics 18 bers If they are the same we can be very confident that the picture data has been transmitted correctly Unequal numbers mean that something has gone wrong in the process and that the received data is not identical to the data that was sent Many receiving devices will report the discrepancy as an error The TSG 601 is a transmitting device and the companion SDA 601 is areceiving device A digital VTR of course can be both Types of CRC Two CRC checkwords are defined in SMPTE RP 165 one derived from a full field of samples and another based on sam ples from the active picture area only The first is known as the Full Field CRC FFCRC while the other is called the
42. st signal Shift Shift Lock Only the next key press is shifted shifted functions are shown in yellow Shift Lock All following keys are shifted until Shift is pressed again Keypad Lock Out Toggles keypad Lock Unlock when locked only Lock Out and On keys are active and display backlight is dimmed Using your TSG 601 Here s a list of what you can do with your TSG 601 Simple instruc tions for each operation begin on the indicated page m Output serial video test signals page 6 TSG 601 User Manual 5 Operating Basics Specify the peak to peak amplitude of the serial output from 600 to 1000 mV page 8 Choose the video components Y Cr Cp to be included in the serial output page 8 Specify 8 or 10 bit video sample words page 9 m Embed CRC information used for Error Detection and Handling or EDH in the output to detect or simulate errors originating in the serial data path page 9 m Add an ID message to the video signal and place it where you want in the picture pages 10 11 m Store up to eight ID messages for later use pages 10 16 m Create a sequence of up to four stored ID messages that will cycle continuously in the output page 11 m Embed Audio information in the serial video data path page 12 m Simulate the effect on your system of 50 m 164 ft of coaxial cable page 15 m Detect improper termination of the serial video signal pa
43. stic Information 75 Color Bars 100 Color Bars Pluge BBC 1 Field Timing 625 50 700 mV 105 mV Field Timing 525 60 700 mV 105 mV Pluge BBC 2 Field Timing 625 50 700 mV 450 mV 200 mV 110 mV Field Timing 525 60 700 mV 450 mV 200 mV 110 mV 5 Step Staircase Amplitude Y channel B Y R Y Mod 5 Step Amplitude Y channel 525 B Y R Y 625 B Y 625 R Y Limit Ramp 26 See Figures 1 2 and 3 and Table 12 See Figures 4 5 and 6 and Table 12 See Figure 7 and Table 13 Lines 83 166 Lines 167 250 Lines 72 142 Lines 143 212 See Figures 8 and 9 and Table 13 Lines 63 114 Lines 115 166 Lines 167 218 Lines 219 270 Lines 55 98 Lines 99 142 Lines 143 185 Lines 186 229 See Figures 10 and 11 and Table 14 0 to 702 4 mV in 176 word steps 351 6 to 351 6 mV in 180 word steps See Figures 10 12 and 13 0 to 702 4 mV in 176 word steps 157 3 mV 83 7 mV 94 4 mV See Figures 14 and 15 In 8 bit extends from word 01 to 254 In 10 bit extends from word 04 to 1016 TSG 601 User Manual Appendix A Characteristics Table 1 Test Signal Characteristics Cont Characteristic Information Shallow Ramp See Figures 16 and 17 Amplitude 80 mV Pedestal variable Y channel 0 to 700 mV B Y R Y 350 to 350 mV Risetimes Y channel 200 ns Nominal B Y R Y 280 ns Nominal Mod Pulse and Bar 625 See Figures 18 19 and 20 lines 50 Hz 4T Pulse HAD 400 ns 10T Pu
44. th page 15 m Save all the current instrument settings as a Preset for later recall page 16 Outputting Serial Video Test Signals 1 Connect the Serial Video Output of the instrument to your system Use 75 Q cable and be sure that the signal path is terminated properly 6 TSG 601 User Manual Operating Basics SERIAL A VIDEO OUTPUT Za P APPROX F OSO S CABLE A 2 Power the TSG page 3 and switch it on By default the instru ment will begin with most settings that were in effect when it was switched off Two exceptions all video component channels will be ON see page 8 and the output amplitude will be 800 mV 3 Select the appropriate serial video standard 625 50 or 525 60 through the Diagnostic menu pages 56 58 4 Return to normal operation by pressing the Test Signals key 5 Select the desired test signal one of three ways Press the Test Signals key repeatedly until the name of the signal you want appears on the display The signal will be output as soon as the name is visible Or Use the A and Y keys to scroll through the list of signals until you get to the desired signal Or Press the appropriate letter key A through P to Direct Se lect the signal The available signals and their corresponding keys are listed below Test Signal Direct Select Key 75 Color Bars A 100 Color Bars Pluge 1 BBC 1 Pluge 2 BBC 2 5 Step Staircase Limit Ramp Shallow Ramp Olni
45. to ch1 chan nel 1 ch2 channel 2 ch3 channel 3 and ch4 channel 4 1 If necessary enter the Audio menu press Shift then Audio On Off 2 Scroll down to the Audio Amplitude Selection item and press the ENTER key The display will be similar to Hucdio Channel ID 4b Enabled 3 Use the and keys to toggle the ID between the enabled and disabled states Press the ENTER key to select the displayed state If the state was changed the display will show each of the four channels momentarily while the SRAM is updated 4 Press any rectangular key to exit the Audio menu or use the W keys to go to the next selection within the Audio menu Cable Simulation m To simulate the addition of 50 meters of 75 Q coaxial cable anywhere in your system connect the TSG 601 into the signal path with the two BNCs marked APPROX 50M CABLE The connectors are interchangeable and the circuit will accurately simulate 50 m of Belden 8281 cable which attenuates the signal by approximately 5 4 dB at 135 MHz whether the TSG 601 is switched on or off Detecting Incorrect Termination m A special If symbol will flash in the upper right corner of the TSG 601 display to indicate improper termination of the serial video signal path The symbol is displayed whenever the instru ment detects return loss below approximately 10 dB which approximates termination impedance of less than 37 5 Q or great er than 150 Q
46. ty if they are discharged to the TSG 601 threshold for disposable batteries Be sure to select the correct Battery Type The Diagnostic Menu 56 To enter the diagnostic menu hold the Lock Out button down while pressing the ON button To exit the diagnostic menu and resume nor mal operation press any of the rectangular buttons at the top of the keypad The diagnostic menu items are listed below Use the up 4 and down Y arrow keys to scroll up and down the list 1 AUTO POWR DOWN disable lt p 1 Auto power down use the left or right p arrow key to toggle between enabled and disabled The Auto Power Down function shuts the TSG 601 off when there has been no key press for approximately 10 minutes to conserve battery charge The Auto Power Down symbol a rotating line ap pears in the upper right corner of the display when the function is enabled TSG 601 User Manual Appendix C User Service 2 Battery Type disposable lt p 2 Battery type use the or p key to toggle between disposable or rechargeable 34 Factory Reset Press ENTER 3 Factory Reset press the Enter button to reset the instrument to the factory defaults WARNING All user selections ID messages and Presets will be lost 4 LCD Diag ALL OnqpALl Off 4 LCD Diagnostic press the 4 key to turn all segments on and press the p key to turn all segments off Exit this diagnostic with the A and y keys as usual 5 LCD Contrast
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