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R&S®NGMO Single/Dual Channel Analyzer

1. MAX 38400 baud MAX Enable DISPlay Sets LCD to Serial Interface ON OFF SYSTem COMM SERial ENABle CHAR VAL Queries serial unicate interface enable ON OFF state Results OFF ON MIN OFF DEFault OFF MAX ON SYSTem COMM SERial BAUD CHAR VAL or Sets serial baud 9600 unicate NUM VAL rate 300 300 baud 600 600 baud 1 200 1200 baud 2 400 2400 baud 4 800 4800 baud 9 600 9600 baud 19 200 19200 baud 38 400 38400 baud MIN 300 baud DISPlay Sets LCD to Serial speed SYSTem COMM unicate SERial BAUD CHAR VAL Queries serial baud rate Results 300 600 1200 2400 4800 9600 19200 5 24 4 00 07 2004 ROHDE amp SCHWARZ IEEE Commands Power Supply NGMO Com Parameter Par value Description Def SCPI mand 38400 MIN 300 DEFault 9600 MAX 38400 SYSTem COMM SERial DATabits CHAR VAL or Sets serial data 8 unicate NUM VAL length 7 7 bits 8 8 bits MIN 7 bits MAX 8 bits DISPlay Sets LCD to Serial count of Databits SYSTem COMM SERial DATabits CHAR VAL Queries serial unicate data length Results 7 8 MIN 7 DEFault 8 MAX 8 SYSTem COMM SERial PARity lt CHAR_VAL gt Sets serial parity NONE
2. VARIATION 2 e U SET SAVE MENU SHIFT 7 l SET RECALL LOBAL ENTER Fig 4 1 Power Supply NGMO2 Operation elements on the control panel 4 00 07 2004 4 1 e ROHDE amp SCHWARZ Power Supply NGMO Operation Function Type Function element POWER pushbotton POWER This is the mains switch to turn the NGMO on and off L VARIATION rotary knob VARIATION This knob has various functions e to increase or decrease numerical values in a menu function to select options within the menu keys ARROW KEYS left and right When no other function is selected the LCD contrast can be adjusted with the arrow keys ally C The arrow key moves the cursor to the numerical input you want to make orto vary a setting within the menu The arrow keys can also be used to abort the recall or the save function CHN 1 key 1 CHANNEL A CHANNEL B 1 Digital Voltmeter A A B DVM Digital Voltmeter B By pressing this key channel A or channel B and the associated DVM can be selected The selected DVM shows an applied external voltage key 2 Voltage setting U SET A Press U SET to set the output voltage you have selected The value you want and if necessary modified by pressing the SHIFT key or by turning the variation knob 3 key 3 Overvoltage protection By pressing the OVP key you can set the max force output voltage with respect to the internal ground If the v
3. Common Output on off on off When Common Output on off is set to OFF the key OUTP on off switches only the output channel that is currently displayed or selected via remote command ON or OFF If Common Output on off is set to ON the OUTP on off key acts simultaneously on both output channels A remote command also acts on both channels 4 15 e ROHDE amp SCHWARZ Power Supply NGMO 4 16 Operation AIB25 Relay 1 on off Turns the output driver for relay 1 on or off The driver signal is applied to the Control I O connector Pin 1 on the rear panel ground on pin 8 and 9 A B26 Relay 2 on off Turns the output driver for relay 2 on or off The driver signal is applied to the Control I O connector Pin 2 on the rear panel ground on pin 8 and 9 AIB27 Relay 3 on off Turns the output driver for relay 3 on or off The driver signal is applied to the Control I O connector Pin 3 on the rear panel ground on pin 8 and 9 A B28 Relay 4 on off Turns the output driver for relay 4 on or off The driver signal is applied to the Control I O connector Pin 4 on the rear panel ground on pin 8 and 9 AIB29 Recall setting when power on 0 10 The NGMO2 saves sets of settings in an internal EEPROM With the menu item Recall settings when power on a user can select which of the stored settings are loaded when the device
4. Factory defaults lt NUM_VAL gt integer or real CHAR VAL string 5 1 IEEE 488 2 common commands and queries Com Parameter Par value Description Def SCPI mand CLS See status Clears all event model registers and error structure for queues further information ESE lt NUM_VAL gt See status Program the model standard event structure for enable register further information ESE NUM VAL See status X Reads the model standard event structure for enable register further information ESR See status Reads the model standard event structure for enable register further and clears it information IDN Returns the manufacturer model number serial number and firmware revision levels of the unit OPC Sets the operation complete bit in the standard event register OPC Places an ASCII 1 into the output queue when selected device operations have been completed RCL CHAR VAL or Returns the power NUM VAL supply to the user saved setup 0 9 0 Factory settings 1 First user setting 9 Ninth user setting MIN Factory settings MAX Ninth user setting RCL CHAR VAL Queries the possible min and Max value 4 00 07 2004 e ROHDE amp SCHWARZ Power Supply NGMO IEEE Commands Com mand Parameter Par value Description Def SCPI MIN 0 MAX 9 RST Returns the p
5. Parameter Par value Description Def SCPI MIN Intern MAX Extern DISPlay Sets LCD to TRIGGER SOURCE PULSe TRIGger SOURce lt CHAR_VAL gt Queries trigger source Results INT EXT MIN INT DEFault INT MAX EXT PULSe TRIGger SLOPe lt CHAR_VAL gt Selects trigger POS slope POS Positive NEG Negative MIN Positive MAX Negative DISPlay Sets LCD to TRIGGER SLOPE PULSe TRIGger SLOPe CHAR VAL Queries trigger slope Results POS NEG MIN POS DEFault POS MAX NEG PULSe SAMPIe LENGth lt CHAR_VAL gt or lt NUM_VAL gt Sets sample length Sample length 1 5000 Sample length 5000 MIN MAX Sample length 1 Sample length 5000 DISPlay Sets LCD to SAMPLE LENGTH PULSe SAMPle LENGth lt CHAR_VAL gt Queries sample length Results 1 lt NUM_VAL lt 5000 MIN 1 00 5 14 4 00 07 2004 ROHDE amp SCHWARZ IEEE Commands Power Supply NGMO Com Parameter Par value Description Def SCPI mand DEFault 1 00 MAX 5000 00 PULSe TRIGger OFFSet lt CHAR_VAL gt or Sets trigger offset 0 NUM VAL 5000 Trigger offset 5000 50000 Trigger offset 50000 MIN Trigger offset 5000 MAX Trigger offset 50000 DISPlay Sets LCD to TRI
6. Static current measurement DVMeter or DVMeter Static DVM measurement AVERage or AVERage Average and sample measurement PEAK or PEAK Peak and sample measurement MIN or MIN Min and sample measurement HIGH or HIGH High and sample measurement LOW or LOW Low and sample measurement RMS or RMS Rms and sample measurement FUNCtion Queries measurement setting Results VOLTAGE CURRENT DVMETER AVERAGE PEAK MIN HIGH LOW RMS CURRent DC RANGe UPPer lt CHAR_VAL gt Selects expected current measurement range HIGH or 5 A HIGH or 5 A 5A MEDium or O 5 A 500mA 4 00 07 2004 e ROHDE amp SCHWARZ Power Supply NGMO IEEE Commands MAX 5mA Com Parameter Par value Description Def SCPI mand LOW or 5mA 0 005 A AUTO Auto ranging MIN Auto ranging DISPlay Sets LCD to CURRENT RANGE CURRent DC RANGe UPPer CHAR VAL Queries current range HIGH MEDIUM LOW AUTO MIN AUTO DEFault HIGH MAX LOW MEASure INTerval lt CHAR_VAL gt or lt NUM_VAL gt Sets the measure ment interval for voltage and current 2 00E 03 Measurement interval 2 ms 2 00E 01 Measurement interval
7. Queries trigger level for 5A HIGH range Results 5 12 4 00 07 2004 ROHDE amp SCHWARZ IEEE Commands Power Supply NGMO Com Parameter Par value Description Def SCPI mand 1E 4 lt NUM VAL lt 7 MIN 0 0 DEFault 2 5 MAX 5 0 PULSe TRIGger LEVel LOW lt CHAR_VAL gt or Sets trigger level 2 5 mA NUM VAL for 0 5A LOW range 1 00E 05 0 01 mA 0 5 500 mA AUTOorO Auto trigger MIN 0A AUTO MAX 500 mA DISPlay Sets LCD to TRIGGER LEVEL RANGE 0 5 A PULSe TRIGger LEVel LOW CHAR VAL Queries trigger level for 5mA range Results 1E 5 NUM VAL lt 0 5 MIN 0 0 DEFault 2 5E 1 MAX 5 0E 1 PULSe TRIGger LEVel DVM CHAR VAL or NUM VAL Sets trigger level DVM 5 999 5 999 Volt 25 000 25 000 Volt MIN AUTO MAX 25 000 Volt DISPlay Sets LCD to TRIGGER LEVEL DVM AUTO Auto trigger PULSe TRIGger LEVel DVM lt CHAR_VAL gt Queries trigger level DVM Results 5 999 lt NUM_VAL lt 25 000 MIN AUTO DEFault 0 000 MAX 25 000 PULSe TRIGger SOURce lt CHAR_VAL gt Selects trigger INT source INT Intern EXT Extern 4 00 07 2004 5 13 e ROHDE amp SCHWARZ Power Supply NGMO IEEE Commands Com mand
8. Results 0 00 lt NUM VAL lt 1 00 MIN 0 00 DEFault 0 00 MAX 1 00 OUTPut EA RELay1 Relay 1 RELay2 Relay 2 RELay3 Relay 3 RELay4 Relay 4 CHAR VAL Closes or opens relay control circuit ZERO or OFF ZERo Opens ONE Closes OFF Opens 4 00 07 2004 e ROHDE amp SCHWARZ Power Supply NGMO IEEE Commands Com Parameter Par value Description Def SCPI mand ON Closes MIN Opens MAX Closes DISPlay Sets LCD to RELAIS n RELay1 Relay 1 RELay2 Relay 2 RELay3 Relay 3 RELay4 Relay 4 CHAR VAL Queries the ON OFF state of the corresponding relay port pin digital I O Results OFF ON MIN OFF DEFault OFF MAX ON 5 8 4 00 07 2004 IEEE Commands 5 4 SENSE command summary ROHDE amp SCHWARZ Power Supply NGMO Com mand Parameter Par value Description Def SCPI SENSe Channel A Channel 1 SENSe 1 Channel A Channel 1 SENSe B Channel B Channel 2 SENSe2 Channel B Channel 2 FUNCtion CHAR VAL Selects Fetch Read Measure function type VOLT AGE VOLTage or VOLTage Static voltage measurement CURRent or CURRent
9. amp SCHWARZ Power Supply NGMO Operation Trigger 1 Trigger Levele 8 lt o o o o o 2 Sequence Sequence Sample Intervall x Sample Length ae Trigger 2 Trigger 3 o o oo o o oo oo o o o oo o oo ff 60 0 0 ow Yo o o o ofo oo a o Sequence 4 Sequence Trigger Count 3 4 26 Fig 4 6 Measurement repetition NOTE The post or pre trigger is only available for a single sample sequence triggercount 1 With a selected triggercount gt 1 data acquisition starts at the trigger signal for any sequence For each measurement range the trigger level is settable in the speci fied value borders with the given resolution of that range With setting the trigger level to the low border of the selected measurement range the AUTO TRIGGER is activated for that range In this mode when starting a sample sequence the trigger system searches for a signifi cant value change of the watched signal and sets the trigger level au tomatic if such a value change occurs In remote mode also software triggered measurments are possible with the NGMO 4 5 2 2 Pulse Analysing The NGMO2 provides the analysing of pulsed signals which delivers the values of several pulse characterising sizes This values are formed out of the samples as described below For all values the following applies to the result With a selected trig gerco
10. o w a o M o o A a Oo 40 to 70 C 18 to 28 C full accuracy 5 to 40 C 0 1 x specification C 4 00 07 2004 amp ROHDE amp SCHWARZ Unit Description Power Supply NGMO 3 4 Function Description 3 4 1 Communication CHANNEL A CHANNEL B 0 15 VDC 0 5 A 0 15 VDC 0 5A OUTPUT A OUTPUT B 25VDC max to 00000 IEEE 488 2 50 60Hz 240VA 115 230V Q l ai a of yo RELAY Fig 3 3 NGMO2 Pin codes Channel Relay Connector rear panel SUB 15 male Pin Function Pin Function Signal 1 DVM 1 RELOUT 1 output relay driver open collector 28 VDC 200 mA 2 DVM 2 RELOUT 2 output relay driver open collector 28 VDC 200 mA 3 FORCE 3 RELOUT 3 output relay driver open collector 28 VDC 200 mA 4 FORCE 4 RELOUT 4 output relay driver open collector 28 VDC 200 mA 5 SENSE 5 FAULT output fault signal open collector 28 VDC 200 mA 6 SENSE 6 NC not used not used 7 FORCE 7 INC not used not used 8 FORCE 8 GND GND signal GND 9 GND GND signal GND 10 INHIBIT_B input external inhibit signal TTL O 12 VDC 11 TRIGGER B input external inhibit signal TTL O 12 VDC 12 INHIBIT A input external inhibit signal TTL O 12 VDC 13 TRIGGER A jinput external inhibit signal TTL O 12 VDC 14 COMPL B output complete signal open 28 VDC 200 mA collector max 15 COMPL A output complete signal open 28 VDC 200 mA collec
11. 1 0E 3 1 0E 5 Sample interval 0 01 msec Sample interval 1 sec MIN MAX Sample interval 0 01 msec Sample interval 1 sec DISPlay Sets LCD to SAMPLE INTERVAL PULSe SAMPle INTerval lt CHAR_VAL gt Queries sample interval Results 1E 5 lt NUM_VAL lt 1 MIN 1E 5 DEFault 1E 3 MAX 1 00 4 00 07 2004 ROHDE amp SCHWARZ IEEE Commands Power Supply NGMO 5 5 SOURCE command summary Com Parameter Par value Description Def SCPI mand SOURCe A Channel A Channel 1 SOURce Channel A 1 Channel 1 SOURce B Channel B Channel 2 SOURce2 Channel B Channel 2 VOLTage PROTec CHAR VAL or Sets VPT offset in 2 0 tion NUM VAL 100mV steps 1 5 1 5 Volt 22 22 Volt MIN 1 5 Volt MAX 22 Volt DISPlay Sets LCD to VOLTAGE PROTECTION VOLTage PROTec tion lt CHAR_VAL gt Queries VPT offset Results 0 0 lt NUM_VAL lt 10 0 MIN 0 00 DEFault 2 0 MAX 10 0 VOLTage PROTec tion STATe Queries VPT state Results 0 gt not triggered 1 gt triggered VOLTage MAXSet ting CHAR VAL or NUM VAL Sets max settable output voltage 0 00 0 Volt 15 00 15 Volt MIN MAX 0 Vol
12. 4 SENSE command summary 5 9 5 5 SOURCE command summary 5 17 5 6 STATUS command summary 5 20 5 7 CONFIG command summary 5 22 5 8 SYSTEM command summary 5 23 5 9 Signal oriented measurement command summary 5 28 5 10 Remote calibration command summary 5 30 6 Ordering Information 6 1 2 Version 4 00 07 2004 amp ROHDE amp SCHWARZ Figures Power Supply NGMO Figures Fig 3 1 NGMO2 Front view 3 2 Fig 3 2 NGMO2 Rear view 3 3 Fig 3 3 NGMO2 Pin codes 3 7 Fig 3 4 Circuit diagram Mobile phone connected to the NGMO2 3 8 Fig 4 1 NGMO2 Operation elements on the control panel 4 1 Fig 4 2 Four wire sense connection 4 20 Fig 4 3 Local sense connections 4 21 Fig 4 4 Sample values 4 24 Fig 4 5 Pre trigger and post trigger acquisition 4 25 Fig 4 6 Measurement repetition 4 26 Fig 4 7 Status model structure 4 29 Version 4 00 07 2004 3 e ROHDE amp SCHWARZ Power Supply NGMO Tables 4 Version 4 00 07 2004 Operator Information 4 00 07 2004 amp ROHDE amp SCHWARZ Power Supply NGMO 1 Operator Information 1 4 Preface We are pleased that you have decided to invest in an ROHDE amp SCHWARZ Power Supply NGMO We would naturally be glad to answer any application questions you may have We look forward to a productive partnership Your After Sales Team at ROHDE amp SCHWARZ GmbH amp Co KG 1 2 NGMO Versions NOTE The Power Supply is available in different versions This Operating Ma
13. Note RQS bitis in serial poll byte ESR ESE lt NRf gt MSS bitis in STB response ESE Measurement Event Registers Opertion Event Registers Condition Event Event Enable Condition Event Event Enable Register Register Register Register Register Register o amp o zs pet feet eet LL Eg Pr Chama ee pe eL Reading Overflow Channel A S s e e y Current Limit A 2S ae CLA Em e Pulse Trigger Timeout Channel A PTA PTA ag eg Current Limit Tripped A e Hase ES CLTA Reading Available Channel A Rava Rava O Rava e Heat Sink Shutdown A HSSA L Harega Reading Overflow Channel B E eS eL Heat Sink Shutdown B EM ERES EL Pulse Trigger Timeout Channel B eL eee Logical Current Limit B CLB 1 CLB BE og e Logical Reading Available Channel B Rave Rave 0 RAVE OR Current Limit Tripped B Clie ere e er n OR Measure Aborted A BF1A meg Dg RL age Open Sense A OSA 7 2 Fete Measure Aborted B Bre a SD a EE m Open Sense B OSB 39 me HH Eo 11 11 11 11 amp 11 ee eS ALPE 5 1L 15 76 759 H e H Pet ae Poet a ta tot t 4 Alese Em y Es Always Zero 15 15 amp 15 CONDition LEVEN a CONDition LEVEN ENABIe lt NR gt e ENABIe Fig 4 7 Status model structure 4 00 07 2004 4 29 e ROHDE amp SCHWARZ Power Supply NGMO Operation 4 30 4 00 07 2004 IEEE Commands ROHDE amp SCHWARZ Power Supply NGMO 5 IEEE Commands
14. YY MM DD Sets calibration data SAVE Save calibration data CAL LOCK Locks calibration 5 30 4 00 07 2004 amp ROHDE amp SCHWARZ Ordering Information Power Supply NGMO 6 Ordering Information Pos Name Part Supplier Part number No 1 Service Manual for Rohde amp Schwarz 192 1500 82 NGMO1 and NGMO2 Cologne Department The Service Manual provides the 5 CE information necessary for calibration Phone fault finding and fault rectification on 49 0 2203 51357 the NGMO 2 NGMO1 Programmable Analyzer DC Power RSE Munich 192 1500 21 Supply 3 NGMO2 Programmable Dual Analyzer DC RSE Munich 192 1500 24 Power Supply 4 NGMO2 BO Front Panel Output Connectors RSE Munich 192 1500 00 5 NGMO2 B1 19 Adapter for one unit RSE Munich 192 1500 01 6 NGMO2 B2 19 Adapter for two units RSE Munich 192 1500 02 7 NGMO2 K10 R amp S Current Sniffer Software RSE Munich 192 1500 04 4 00 07 2004 6 1 e ROHDE amp SCHWARZ Power Supply NGMO Ordering Information 6 2 4 00 07 2004
15. information which must be acted on Apart from the information in the operating instructions the statutory safety regulations that apply in the country of use the relevant techni cal standards and the regulations concerning the safe and appropriate use of electrical equipment must also be observed The operating instructions belong to the unit and must always be avai lable at the place of use of the Power Supply NGMO The owner must observe national safety and environmental protection regulations 4 00 07 2004 Operator Information amp ROHDE amp SCHWARZ Power Supply NGMO 1 4 Explanation of Symbols The Power Supply NGMO was produced according to the generally ac cepted regulations governing the technology and current status of sci ence and technology However it is impossible to design hazard free electrical equipment In order to guarantee a sufficient level of safety for personnel working with the Power Supply NGMO safety regulations must be observed Certain sections of the text are highlighted as follows ELECTROCUTION HAZARDS Observe the relevant safety regulations when operating electri cal devices Observe the operating instruction WARNING Failure to follow the instructions could damage the Power Supply NGMO A A v A 4 00 07 2004 ATTENTION Failure to follow the instructions may cause spurious results N
16. that the output of power supply A is currently turned off A ON means that the output of power supply A is currently turned on AB OFF is displayed if function A B24 Common output on off see below Menu Items is turned on and both outputs are off AB ON is displayed if function A B24 Common output on off see below Menu Items is turned on and both outputs are on PROT is displayed if the OCP key has been pressed so activating the overcurrent protection function In OCP active mode the output is switched off if the current on output lines exceeds the current li mit setting y yyy If OCP is turned off the current is limited to the current limit setting If NGMO2 enters the current limit state ILIM is displayed at the same location as PROT INH is displayed at the PROT location when the output has been turned off by a logical 1 applied to the INHIB A pin on the CONTROL I O connector RDY is displayed when the NGMO2 has finished sampling and measurement data are ready to be transferred for analysis REM is displayed when the NGMO2 has received remote com mands via the IEEE interface or serial interface In remote mode 4 7 e ROHDE amp SCHWARZ Power Supply NGMO 4 8 Operation manual setting keys are disabled except the local key and those to change the display mode This makes it easier for software deve lopers to verify that their software is running correctly When a lock command has been received
17. the questionable enable register See status model structure for further information Results 0 to 32767 QUES tionable COND ition Read the questionable condition register See status model structure for further information Results 0 to 32767 PRESet Returns status registers to default states Results none 4 00 07 2004 5 21 e ROHDE amp SCHWARZ Power Supply NGMO 5 7 CONFIG command summary IEEE Commands MAX On Com Parameter Par value Description Def SCPI mand CONFig IEA Channel A Channel 1 CONFig Channel A 1 Channel 1 CONFig B Channel B Channel 2 CONFig2 Channel B Channel 2 CURRent LIMit BEEP CHAR VAL Beep on current OFF limit OFF Off ON On MIN Off DISPlay Sets LCD to Beep on current limit CURRent LIMit BEEP CHAR VAL Queries current limit beep Results OFF ON MIN OFF DEFault OFF MAX ON CONFig A COMMon OUTPut ONOFf CHAR VAL Sets output ON OFF key to common for boths channels OFF OFF Off ON On MIN MAX Off On DISPlay sets LCD to Common output on off COMMon OUTPut ONOFf CHAR VAL Queries common ON OFF key function OFF ON MIN OFF DEFault OF
18. the unit or opening the unit the latter must be discon nected from the supply network Any adjustments replacements of parts maintenance or repair may be carried out only by authorized R amp S technical personnel Only original parts may be used for replacing parts relevant to safety e g power switches power transformers fuses A safety test must be performed after each replacement of parts relevant to safety visual inspection PE conductor test insulation resistance leakage current measurement function test 10 Ensure that the connections with information technology equipment comply with IEC950 EN60950 11 Lithium batteries must not be exposed to high temperatures or fire Keep batteries away from children If the battery is replaced improperly there is danger of explosion Only replace the battery by R amp S type see spare part list Lithium batteries are suitable for environmentally friendly disposal or specialized recycling Dis pose of them in appropriate containers only Do not short circuit the battery Safety sheet ii 12 13 14 15 Equipment returned or sent in for repair must be packed in the original packing or in packing with electrostatic and mechanical protection Electrostatics via the connectors may damage the equipment For the safe handling and op eration of the equipment appropriate measures against electrostatics should be implemented The outside of the in
19. unicate NONE None ODD Odd EVEN Even MIN None MAX Even DISPlay Sets LCD to Serial parity SYSTem COMM SERial PARity lt CHAR_VAL gt Queries serial unicate parity Results NONE ODD EVEN MIN NONE DEFault NONE MAX EVEN SYSTem COMM SERial STOPbits lt CHAR_VAL gt or Sets number of 1 unicate lt NUM_VAL gt stopbits 1 1 stopbits 2 2 stopbits MIN 1 stopbits 4 00 07 2004 5 25 e ROHDE amp SCHWARZ Power Supply NGMO IEEE Commands Com Parameter Par value Description Def SCPI mand MAX 2 stopbits DISPlay Sets LCD to Serial count of stopbits SYSTem COMM SERial STOPbits CHAR VAL Queries number unicate of stopbits Results 1 2 MIN 1 DEFault 1 MAX 2 SYSTem COMM _ SERial HAND CHAR VAL Sets serial NONE unicate shake handshake mode NONE None HARDware Hardware XON Xon xoff MIN None MAX Carriage return MAX Hardware DISPlay Sets LCD to Serial Handshake SYSTem COMM SERial HAND CHAR VAL Queries serial unicate shake handshake mode Results NONe XON HARDWARE MIN NONE DEFault NONE MAX HARDWARE SYSTem COMM SERial DELimiter lt CHAR_VAL gt Sets the serial CR unicate delimiter CR Carriage return LF Line feed MIN Carriage return DISPlay Sets LCD to Serial delimiter SYSTem COMM unicate SERia
20. 000 5 000A MIN 0 000A MAX 5 000A 5 18 4 00 07 2004 ROHDE amp SCHWARZ IEEE Commands Power Supply NGMO Com Parameter Par value Description Def SCPI mand DISPlay Sets LCD to Maximum output current CURRent LIMit MAXSet lt CHAR_VAL gt Queries max ing settable current limit Results 0 000 lt NUM_VAL lt 5 000 MIN 0 DEFault 5 MAX 5 CURRent LIMit TYPE lt CHAR_VAL gt Sets current limit LIMIT type LIMit Limit TRIP Trip MIN Limit MAX trip DISPlay Sets LCD to Main display CURRent LIMit TYPE lt CHAR_VAL gt Queries current limit type Results LIMIT TRIP MIN LIMIT DEFault LIMIT MAX TRIP CURRent LIMit STATe Queries current limit state Results 1 gt in current limit or output tripped 0 gt not in LIMIT TRIP 4 00 07 2004 5 19 e ROHDE amp SCHWARZ Power Supply NGMO IEEE Commands 5 6 STATUS command summary Com Parameter Par value Description Def SCPI mand STATus General Status commands MEAS EVENI Read the urement measurement event register See status model structure for further information Results 0 to 32767 MEAS ENABIe NUM VAL 0 to 32767 Program the urement measurement enable register See s
21. 07 2004 Operation amp ROHDE amp SCHWARZ Power Supply NGMO 4 5 2 1 Trigger System A dynamic measurement sequence is specified by the selected sample interval 0 01 1000 00 ms and the required number of sample points Sample Length 1 5000 It is initialized by starting the sample mode Sample Start gt on and then the trigger system detects the valid sample values depending on the selected trigger parameters The measurement stops if either the selected number of values has been taken or the measurement buffer is full The trigger system allows the start of recording a signal before at or after the trigger signal Therefore a trigger offset can be set between 5000 to 50000 With a positive trigger offset a trigger delay can be ge nerated depending on the selected sample intervall Offset 5000 5000 Sample Points Offset 2500 5000 Sample Points Offset 0 5000 Sample Points Offset 0 to 50000 5000 Sample Points Trigger Signal Time 4 00 07 2004 Fig 4 5 Pre trigger and post trigger acquisition The trigger system of the NGMO2 allows the automatic repetition of such measurement sequences up to 99 times to build average pulse values Therefore a triggercount is settable between 1 and 100 in the menue which represents the number of sequences to be executed be fore the measurement is stopped 4 25 e ROHDE
22. 200 ms MIN MAX 2ms 200 ms DISPlay Sets LCD to STATIC MEASURE INTERVAL MEASure INTerval lt CHAR_VAL gt Queries measure ment interval Results 2E 3 lt NUM_VAL lt 0 2 MIN 0 002 ms DEFault 0 01 ms MAX 0 2 ms AVERage COUNt lt CHAR_VAL gt or lt NUM_VAL gt Sets the measure average count Average count 1 10 Average count 10 MIN MAX 1 10 5 10 4 00 07 2004 IEEE Commands ROHDE amp SCHWARZ Power Supply NGMO Com mand Parameter Par value Description Def SCPI DISPlay Sets LCD to STATIC AVERAGE COUNT AVERage COUNt lt CHAR_VAL gt Queries measure ment interval Results 1 lt NUM VAL lt 10 MIN 1 DEFault 1 MAX 10 PULSe TRIGger STATe Queries current trigger status Results NONE TRIGGERED READY TIMEOUT PULSe MEAS ure CHANnel CHAR VAL Selects pulse measurement channel CUR RENT CURRent Current measurement DVM DVM measure ment MIN MAX Current measurement DVM measure ment DISPlay Sets LCD to SAMPLE CHANNEL PULSe MEAS ure CHAN nel CHAR VAL Queries pulse measurement channel Res
23. 34 Serial Parity node odd even With menu item Serial Parity the user can select the data integrity checking method for serial communication This setting is independent of the setting made with menu item 29 recall setting when power on none No check bits are sent or received and checked odd The number of ones in a data word including parity bit is odd even The number of ones in a data word including parity bit is even 4 00 07 2004 4 17 e ROHDE amp SCHWARZ Power Supply NGMO Operation AIB35 Serial count of stopbits 1 2 This menu item is used to select Serial count of stopbits for data transmission When set to 1 only one stopbit is transmitted before the start of the next data byte When set to 2 two stopbits are transmitted before the next data byte this means synchronisation is better but there are fewer transfers per second This setting is independent of the setting made with menu item 29 recall setting when power on A B36 Serial Handshake none HW xon xoff This menu item lets you set the serial handshake mode none NGMO2 does not use handshaking for serial communication This mode assumes that both ends are always ready for data transfers HW NGMC2 uses the serial handshake lines RTS and CTS for handshaking If RTS is low not active no data must be sent to NGMOA If CTS is low no data is send from NGMO2 Xon XOff NGMO2 uses a software hands
24. F MAX ON 5 22 4 00 07 2004 ROHDE amp SCHWARZ IEEE Commands Power Supply NGMO 5 8 SYSTEM command summary Com Parameter Par value Description Def SCPI mand SYSTem POSetup CHAR VAL or Selects default LAST NUM VAL setting for power SET up 0 Factory settings 1 First user saved setting 9 Ninth user saved RST setting Factory settings SAV1 First user saved setting SAV2 SAV3 SAV4 SAV5 SAV6 SAV7 SAV8 2 3 4 5 6 7 8 SAV9 Ninth user saved setting LASTset Last front panel setup SYSTem POSetup CHAR VAL Queries the default setup for power up Results RST SAV1 SAV2 SAV3 SAV4 SAV5 SAV6 SAV7 SAV8 SAV9 SYSTem ERRor Read and clear oldest message in error queue SYSTem VERSion Queries SCPI version level SYSTem PRESet Stop all measurements and Sets NGMO2 to factory defaults 4 00 07 2004 5 23 e ROHDE amp SCHWARZ Power Supply NGMO IEEE Commands interface Com Parameter Par value Description Def SCPI mand SYSTem CLEar Clears the error queue SYSTem COMM SERial ENABIe CHAR VAL Enables or OFF unicate disables the serial OFF Disable ON Enable MIN Disable
25. GGER OFFSET PULSe TRIGger OFFSet CHAR VAL Queries trigger offset Results 5000 NUM VAL lt 50000 MIN 5000 00 DEFault 0 00 MAX 50000 00 PULSe TRIGger COUNt CHAR VAL or NUM VAL Sets trigger count Trigger count 1 100 Trigger count 100 MIN MAX Trigger count 1 Trigger count 100 DISPlay Sets LCD to TRIGGER COUNT PULSe TRIGger COUNt lt CHAR_VAL gt Queries trigger count Results 1 lt NUM VAL lt 100 MIN 1 00 DEFault 1 00 MAX 100 00 PULSe TRIGger TIMeout CHAR VAL or NUM VAL Sets trigger timeout INFI NITE 0 001 Triggers timeout 0 001 sec 60 Triggers timeout 60 sec INFinite Triggers timeout infinite 4 00 07 2004 5 15 e ROHDE amp SCHWARZ Power Supply NGMO IEEE Commands Com mand Parameter Par value Description Def SCPI MIN MAX Triggers timeout infinite Trigger timeout 60 DISPlay Sets LCD to TRIGGER TIMEOUT PULSe TRIGger TIMeout CHAR VAL Queries trigger timeout Results 0 lt NUM VAL 60 MIN INFINITE DEFault INFINITE MAX 60 00 PULSe SAMPIe INTerval CHAR VAL or NUM VAL Sets sample interval
26. ONG Long integer SREal Short real DREal Double real MIN ASCII MAX Double real FORMat DATA lt CHAR_VAL gt Queries selected data format Results ASCII LONG SREAL DREAL MIN ASCII DEFault ASCII MAX DREAL FORMat BORDer CHAR VAL Specifies byte order for non ASCII output formats NORMal Normal byte order MSB first NOR MAL SWAPped Swapped byte order LSB first MIN Normal MAX Swapped FORMat BORDer Queries byte order Results NORMAL SWAPPED MIN NORMAL DEFault NORMAL MAX SWAPPED 4 00 07 2004 5 5 e ROHDE amp SCHWARZ Power Supply NGMO 5 3 OUTPut command summary IEEE Commands Com mand Parameter Par value Description Def SCPI OUT A CHAR VAL OFF Turns output A off OFF CHAR VAL ON Turns output A on OUT CHAR VAL OFF Turns output B off OFF CHAR VAL ON Turns output B on OUTPut A Channel A Channel 1 OUTPut 1 Channel A Channel 1 OUTPut Channel B Channel 2 OUTPut2 Channel B Channel 2 STATe lt CHAR_VAL gt Turns output ON or OFF A or B OFF OFF Turns output off ON Turns output on MIN MAX Turns output off Turns output on DISPlay
27. OTE Emphasizes significant details the observance of which is of particular importance and which facilitate operation e ROHDE amp SCHWARZ Power Supply NGMO Operator Information 1 5 Inspection The Power Supply NGMO2 was carefully inspected electrically and mechanically before shipment After unpacking the unit from the ship ping carton check for any obvious signs of physical damage that may have occured in transit Remove any protective film over the screen Report any damage to the shipping agent immediately Save the origi nal packing carton for any future shipments The following items are included with every order e 1 Power Supply NGMO e 1 power cable e 2 output connectors e 1 Operating manual 1 4 4 00 07 2004 amp ROHDE amp SCHWARZ Safety Power Supply NGMO 2 Safety 2 1 General NOTE Le Only personnel authorized by ROHDE amp SCHWARZ may open the Power Supply NGMO If the safety regulations for the Power Supply NGMO are disre garded ROHDE amp SCHWARZ GmbH amp Co KG will not assume liability for any resulting damage and all warranties will become null and void 2 2 Safety Instructions ELECTROCUTION HAZARDS Observe the relevant safety regulations when operating electri cal devices Observe the operating instruction ATTENTION Failure to follow the instructions may cause spurious results WARNING Failure to follow the instruc
28. ROHDE amp SCHWARZ Operating Manual Power Supply NGMO1 and Power Supply NGMO2 192 1500 21 and 192 1500 24 Version 4 00 07 2004 ROHDE amp SCHWARZ Operating Manual Power Supply NGMO1 and Power Supply NGMO2 Edition July 2004 Version 4 00 All rights reserved including translation into foreign languages No part of this manual may be re produced or reworked using electronic systems duplicated or distributed in any form photo copying microfilm or any other process not even for instructional purposes without written permission from ROHDE amp SCHWARZ GmbH amp Co KG Disclosure or reproduction of this documentation utilization and communication of its contents is not permitted without express approval Infringements will lead to claims for compensation All rights reserved in the event of patents being granted or registration of a protected design ROHDE amp SCHWARZ GmbH amp Co KG M hldorfstrafte 15 D 81671 M nchen Phone 49 0 1805 124242 Fax 49 0 89 4129 13777 Internet www rohde schwarz com E mail CustomerSupport rohde schwarz com Printed in the Federal Republic of Germany Subject to alternations Safety Instructions This unit has been designed and tested in accordance with the EC Certificate of Conformity and has left the manufacturer s plant in a condition fully complying with safety standards To maintain this condition and to ensure safe operation the user must observe all i
29. Sets LCD to main Screen STATe CHAR VAL Queries state of output Results OFF ON MIN OFF DEFault OFF MAX ON OPEN sense CHAR VAL OFF Turns open sense detection off ON Turns open sense detection on MIN Turns open sense detection off DEFault Turns open sense detection on MAX Turns open sense detection on OPEN sense CHAR VAL Queries of open sense detection setting OFF ON MIN MAX OFF ON 5 6 4 00 07 2004 ROHDE amp SCHWARZ IEEE Commands Power Supply NGMO Com Parameter Par value Description Def SCPI mand BAND CHAR VAL Selects slow or fast l HIGH width regulation speed HIGH Bandwidth high LOW Bandwidth low MIN Bandwidth high MAX Bandwidth low DISPlay Sets LCD to OUTPUT BANDWIDTH BAND width CHAR VAL Queries bandwidth settings Results LOW HIGH MIN HIGH DEFault HIGH MAX LOW IMPe dance lt CHAR_VAL gt or lt NUM_VAL gt Specifies the output impedance to apply 0 Ohms to 1Ohms in 10 mOhm steps Ohms 0 00 0 Ohm 1 00 1 Ohm MIN MAX Impedance 0 Ohm Impedance 1 Ohm DISPlay Sets LCD to OUTPUT IMPEDANCE IMPe dance CHAR VAL Queries impedance settings
30. V 1mV 0 05 5 mV 0 5 mV 0 01 9o 3 mV 35 us 50 us 80 us 100 us 60 mV 1 mVnws 0 to 1 Q settable in 10 mQ steps up to 1 V 4 V per lead 7A 0t05A 0to2 5A 1 mA Unit Description Channel 2 0 to 15V 1 mV 0 05 5 mV 0 5 mV 0 01 9o 3 mV 35 us 50 us 80 us 100 us 60 mV 1 mVams 0 to 1 Q settable in 10 mQ steps up to 1 V 4 V per lead 7A 0t05A 0t02 5A 1 mA 4 00 07 2004 Unit Description deviation from full scale with 10 AC supply variation from 10 to 90 load change current sink capability Voltage measurement Range resolution deviation from full scale Measurement time averaging Current measurement Ranges resolution deviation from full scale Measurement time averaging Dynamic measurement Sample buffer Sample time multiple trigger Triggering system ranges settable levels range 5A range 0 5 A DVM 4 00 07 2004 10 mA 1 mA 2 5 mA 2 8 A 0 to 5 V derating up to 1Aat 15V 5to 25V 1 mV 0 03 3 mV 2 ms to 200 ms settable 1 to 10 values 7 A 0 5 A 5 mA 200 pA 10 pA O 1 uA 15 mA 1 mA 10 pA 2 ms to 200 ms settable 1 to 10 values 1 to 5000 points 10 us to 1 s in 10 us steps 1 to 100 5 A 0 5 A 0 Ato 7 Ain 200 pA steps 0 mA to 0 5 A in 10 uA steps 5 V to 25 V in 1 mV steps amp ROHDE amp SCHWARZ Power Supply NGMO 10 mA 1 mA 2 5
31. ard to the operator 4 20 Source Input Output Input DVM 4 3 1 Remote Sense Quick Disconnect Connector Twisted Pair External Test Circuit DUT LV Fig 4 2 Four wire sense connection As shown in Fig 4 2 the channels are intended to be operated with re mote sense leads 4 wire connection The sense and sense pins provide output voltage sensing Use voltage protection to turn off the output and protect against extre mes refer to 4 1 Operating Elements 4 2 3 Menu Make sure that the senses are properly connected Connect the sense inputs to the NGMO2 as close as possible to the load s source inputs using twisted pairs see Fig 4 2 This is necessa ry to achieve the maximum transient performance of the NGMO2 4 00 07 2004 amp ROHDE amp SCHWARZ Operation Power Supply NGMO 4 3 2 Local sense Quick Disconnect Connector Twisted Pair External Test Circuit N LNE SP NE SN DUT Source Input Output DVM Input Fig 4 3 Local sense connections The NGMO2 can be connected to operate with local sense leads 2 wire connection as shown in Fig 4 3 When this connection sche me is used the sense inputs and supply outputs are jumpered at the rear of the NGMO2 4 3 3 Output Impedance The NGMC2 has a variable output impedance feature on both chan nels This output impedance setting a
32. belonging to this periods is formed and sto red 4 27 e ROHDE amp SCHWARZ Power Supply NGMO 4 28 Operation 4 6 Status Structure The NGMO2 provides a series of status registers and queues allowing the operator to monitor and manipulate the various instrument events The status structure is shown in Fig 4 4 The heart of the status struc ture is the status byte register This register can be read by the user s test program to determine if a service request SRQ has occur red and what event caused it 4 6 1 Status Byte and SRQ The status byte register receives the summary bytes of four status re gister sets and two queues The register sets and queues monitor the various instrument events When an enabled event occurs it sets a summery bit in the status byte register When a summary of a status byte is set and its corresponding enable bit is set as programmed by the user the RQS MSS bit will set to indicate that an SRQ has occur red 4 6 1 1 Status Register Sets A typical status register set is made up of a condition register an event register and an event enable register A condition register is a read only register that is continously updated to reflect the present operating conditions of the instrument When an event occurs the appropriate event register bit is set to 1 The bit remains latched to 1 until the register is reset When an event register bit is set and its corresponding enable bit is set as p
33. een two static current and DVM measurements Any value from 2 to 200 ms can be selected A B03 Static Measure Average Count 1 10 This setting specifies the average count for static current and DVM measurements Values from 1 to 10 can be selected The total measurement time for static measure ments is the product of Static Measure Interval multiplied by Static Measure Average Count A IB04 Output Impedance 0 1 00 Ohms This menu item lets you set the output impedance from 0 00 Ohms to 1 00 Ohms im 10 mOhms steps A BO5 Output Bandwidth high low This menu item lets you select one of two different output regulation characteristics When in High mode the NGMCOC2 has the fasted regulation speed available see specifications for further information but this may result in an unstable load regulation for inductive loads 4 11 e ROHDE amp SCHWARZ Power Supply NGMO 4 12 Operation AIBO06 Sample Channel Current DVM This menu items lets you select the source for the NGMO2 analysis functions When current is selected the analysis functions use the internal current measure circuits for analysis ranges 5A or 5A In DVM mode the external DVM inputs are used for analysis AIBOT7 Trigger Level Range 5A 0 0000 7 0000A Lets you set the trigger level in the 5A range see menu item A BO1 and the signal analysis functions Any value between 0 0000 A Auto and 7 0000 A
34. from the IEEE interface the NGMO 2 enters the lock state In this state all manual settings are completely disabled LOCK is displayed instead of REM Example 2 is similar to example 1 except that channel B has been selected using the CHN key Example 3 line 1 DVMA means that currently the DVM measurement input of chan nel A has been selected The value of the voltage applied to chan nel A DVM input is currently displayed e zzzzisthe value of the measured voltage in volts e DVMA is selected by pressing the CHN key line 2 is similar to example 1 line 2 Example 4 is similar to example 3 except that the voltage of DVM input of channel B is displayed e DVMB can also be selected by pressing the CHN key End of startup Now the NGMO2 is in the main function mode This mode allows the setting of the output voltage the current limit the overvoltage protecti on and the overcurrent protection The startup settings depend on the setting of menu item 29 See desc ription below for further information on recalling settings 4 00 07 2004 amp ROHDE amp SCHWARZ Operation Power Supply NGMO 4 2 3 Menu There are two ways of entering numerical settings The first way is to use the variation knob 16 Fig 3 1 and the arrow keys 14 15 Fig 3 1 The second is to use the keys with the extra blue labels 4 2 3 1 How to Enter a Numerical Value Using the Variation Knob To enter a numerical
35. fter selecting one of the 6 possible settings the result can be displayed by changing to menu item A B20 Because all possible analysis types are calculated internally after each sampling cycle every setting is allowed 4 00 07 2004 Operation 4 00 07 2004 amp ROHDE amp SCHWARZ Power Supply NGMO A B20 READ xxx Value Result The READ xxx Value menu item xxx AVER PEAK MIN HIGH LOW RMS see also A B19 displays the result for the selected analysis function If there is no result available because there is no data that can be analyzed only a line is displayed AIB21 Maximum output Voltage 0 000 15 000 V This menu item is an NGMO2 safety feature Setting a voltage value below 15 000 volts limits the maximum settable output voltage in the main display to the voltage given here A connected device is therefore protected from voltages above the maximum allowed ratings AIB22 Maximum output Current 0 000 5 000 A This menu item is an NGMO2 safety feature Setting a current value below 5 000 Amperes limits the maximum settable output current limit in the main display to the current limit given here A connected device is therefore protected from currents above the maximum allowed ratings AIB23 Beep on Current limit on off When Beep on Current limit is set on the NGMO2 there is a short beep whenever the NGMO2 enters the current limit state AIB24
36. ger source see A BO7 to A B09 or use an external trigger signal to start an analysis measurement The external trigger signal can be applied on the rear panel A B12 Trigger Slope pos neg The trigger slope specifies the slope positive or negative transition used for signal triggering A positive slope is a low to high current or voltage transition a negative slope specifies a high to low transition A B13 Trigger Count 1 100 The trigger count specifies the number of times the analysis measurement is repeated to calculate the average value for Average Peak Min High Low and RMS functions Any value from 1 to 100 can be selected AIB14 Trigger Offset 5000 50000 points The trigger offset specifies a trigger delay for analysis measurements in terms of a certain number of sampling points A positive Trigger offset specifies a delay a negative Trigger offset specifies an advance trigger pre trigger Any integer value between 5000 to 50000 can be selec ted A B15 Sample length 1 5000 points The sample length is the number of samples that are taken for a measurement signal analysis 4 13 e ROHDE amp SCHWARZ Power Supply NGMO 4 14 Operation A B16 Sample Interval 0 01 1000 ms The sample interval is the time interval between two consecutive samples used for measurement or signal analysis Both the Sample length and the Sample In
37. going entry and the old value is restored The right arrow key can also be used to abort an entry which is being made The left arrow key acts as a back space key Each time the left arrow key is pressed a digit is selected When the ENTER key is pressed the new value is accepted and the direct numerical entry mode is ter minated 4 00 07 2004 4 9 e ROHDE amp SCHWARZ Power Supply NGMO Le 4 10 Operation NOTE If you are in the Menu mode and you have selected a function that accepts numerical entries the direct numerical input mode can be activated by pressing the SHIFT key without first pres sing the ENTER key However it is also possible to first select the variation knob entry mode by pressing the ENTER key and then entering the direct numerical entry mode by pressing the SHIFT key 4 2 3 3 How to Change Settings in Menu Mode Most NGMO2 settings can only be changed inside the Menu mode To enter the Menu mode press the MENU key once A brief message is displayed how to navigate through the menu The NGMO 2 then dis plays A01 or BO1 after power on or when you re enter the Menu mode the last menu item that was previously selected Now a menu item can be selected by turning the variation knob The action to chan ge an item value or setting depends on the kind of item If an item type has predefined options just press the left arrow key to move the square brackets around a value one to the left and the r
38. hake for serial communication The Xoff control character suspends serial communication XON continues serial communication AIB3T Serial Receive Delimiter CR LF The setting of Serial Receive Delimiter decides which control character is used for delimiting a command that is sent to the NGMO2 using the serial interface If CR is set the NGMO2 waits for a carriage return Control M as the end of command character If LF is set NGMO2 waits for a line feed Control J If LF is set a CR may precede the delimiter LF This setting is independent of the setting made with menu item 29 recall setting when power on 4 18 4 00 07 2004 Operation 4 00 07 2004 amp ROHDE amp SCHWARZ Power Supply NGMO AIB38 Calibration mode Press ENT to select After pressing the enter key the user enters the calibration mode for the NGMO See Service Manual Chapter 7 192 1500 82 NOTE The calibration of the Power Supply NGMO has to be made by Rohde amp Schwarz personnel or an authorized company 4 19 e ROHDE amp SCHWARZ Power Supply NGMO Operation 4 3 Test Connections AA ELECTROCUTION HAZARDS Observe the relevant safety regulations when operating electri cal devices Do not float the power supply output more than 25 V from chassis Otherwise in addition to the output voltage above 50 VDC can increase at the terminals and present electric shock haz
39. ight arrow key to move it one to the right The new selected setting comes into effect immedi ately The ENTER key does not need to be pressed Items that accept numerical values are changed by using the variation knob or the direct numerical input as described above To enter one of these modification modes either the ENTER key for variation knob entry or the shift key must be pressed To leave the entry mode just press the ENTER key which brings you back to the menu item selecti on mode NOTE Please note that the presence of absence of the cursor tells you what the current entry mode is If no cursor is displayed you are in menu item selection mode if the underscore cursor is displayed you are in the variation knob entry mode and if a flashing solid cursor is displayed the direct numerical entry mode has been selected 4 00 07 2004 Operation 4 00 07 2004 4 2 3 4 amp ROHDE amp SCHWARZ Power Supply NGMO Menu Items The menu includes a selection of items from A01 or B01 to A38 or B38 The indicated channel A or B depends on which channel is selected A B01 Current range AUTO 5A 5A 5mA This function selects the range for static current measure ment See main screen and also selects the current range for signal analysis The analysis mode is only available in the ranges SA and SA A B02 Static Measure Interval 2 200 ms This setting specifies the repetition time betw
40. ing Hot Ground Attention Shock surfaces Electrostatic hazard sensitive devices require special care If a different voltage is to be set the power fuse of the unit may have to be changed accordingly Units of protection class with disconnectible AC supply cable and appliance connector may be operated only from a power socket with grounding contact and with the PE conductor connected It is not permissible to interrupt the PE conductor intentionally neither in the incoming cable nor on the unit itself as this may cause the unit to become electrically hazardous Any extension lines or multiple socket outlets used must be checked for compliance with relevant safety standards at regular intervals If the unit has no power switch for disconnection from the AC supply the plug of the connecting cable is regarded as the disconnecting device In such cases it must be ensured that the power plug is easily reachable and accessible at all times length of connecting cable approx 2 m Functional or electronic switches are not suit able for providing disconnection from the AC supply If units without power switches are integrated in racks or systems a disconnecting device must be provided at system level continued overleaf Safety sheet i Safety Instructions 9 Applicable local or national safety regulations and rules for the prevention of accidents must be observed in all work performed Prior to performing any work on
41. ing points READ A Channel A Channel 1 READ 1 Channel A Channel 1 READ B Channel B Channel 2 READ2 Channel B Channel 2 Triggers and returns a reading Measuremode is taken from last SENSe FUNC tion setting READ A Channel A Channel 1 READ 1 Channel A Channel 1 READ B Channel B Channel 2 READ2 Channel B Channel 2 ARRay Triggers and returns a array of readings Return value are always sampling points 5 28 4 00 07 2004 ROHDE amp SCHWARZ IEEE Commands Power Supply NGMO Com Parameter Par value Description Def SCPI mand MEASure A Channel A Channel 1 MEASure Channel A 1 Channel 1 MEASure B Channel B Channel 2 MEASure Channel B 2 Channel 2 Performs a READ Measuremode is taken from last SENSe FUNC tion setting MEASure A Channel A Channel 1 MEASure 1 Channel A Channel 1 MEASure B Channel B Channel 2 MEASure 2 Channel B Channel 2 AVER age Take a READ on AVERage function and returns the measure result PEAK for function PEAK MIN for function MIN HIGH for function HIGH LOW for function LOW RMS for function RMS VOLTage DC for function VOLTAGE CURRent DC for fu
42. is powered up 0 use factory defaults after power up 1 to 9 use user defined settings that have been previously stored with the SAVE function 1 to 9 10 use the last manual settings as the new power up settings AIB30 IEEE Address 1 30 This setting specifies the IEEE address of the NGMO2 This setting is independent of the setting made with menu item 29 Recall setting when power on 4 00 07 2004 Operation amp ROHDE amp SCHWARZ Power Supply NGMO AIB31 Serial interface on off When set to ON a RS232 connection to the NGMO2 can be used as a remote interface This setting is independent of the setting made with menu item 29 Recall setting when power on AIB32 Serial Speed 300 600 1200 2400 4800 9600 19200 38400 Baud With this menu item the speed Baud Rate for the serial interface can be set using the rotary knob Numerical entries can not be made with the SHIFT key This setting is independent of the setting made with menu item 29 Recall setting when power on AIB33 Serial count of Databits 7 8 This menu item selects the data length for the serial interface This can be either 7 bits or 8 bits Note when a data length of 7 is selected only even or odd parity can be used due hardware limitations of the internal interface This setting is independent of the setting made with menu item 29 recall setting when power on AIB
43. l DELimiter lt CHAR_VAL gt Queries the serial delimiter Results CR LF MIN CR DEFault CR 5 26 4 00 07 2004 ROHDE amp SCHWARZ IEEE Commands Power Supply NGMO Com Parameter Par value Description Def SCPI mand MAX LF SYSTem COMM unicate IEEe ADDRess CHAR VAL or NUM VAL Sets the IEEE address 1 Address nr 01 30 Address nr 30 MIN Address nr 01 MAX Address nr 30 DISPlay Sets LCD to IEEE Address SYSTem COMM IEEe ADDRess CHAR VAL Queries the IEEE unicate address Results 01 30 MIN 01 DEFault 05 MAX 30 4 00 07 2004 5 27 e ROHDE amp SCHWARZ Power Supply NGMO IEEE Commands 5 9 Signal oriented measurement command sum mary Com Parameter Par value Description Def SCPI mand FETCh A Channel A Channel 1 FETCh 1 Channel A Channel 1 FETCh B Channel B Channel 2 FETCh2 Channel B Channel 2 Returns the last triggered reading Measuremode is taken from last SENSe FUNC tion setting FETCh A Channel A Channel 1 FETCh 1 Channel A Channel 1 FETCh B Channel B Channel 2 FETCh2 Channel B Channel 2 ARRay Returns the last array of triggered readings Return values are always sampl
44. llows the performance of the bat tery channel to closely model a real battery s performance with a dy namic load When setting the output impedance to a certain value R the output voltage drop will be proportional to the output current see formula below The output voltage will be reduced by the voltage drop Voltage drop equation Varop t R x I t 4 00 07 2004 4 21 e ROHDE amp SCHWARZ Power Supply NGMO 4 22 Operation 4 4 Factory Defaults The NGMO can be set to power up using the factory default conditions or the user saved setup conditions The factory defaults are listed in chapter 5 IEEE Commands 4 00 07 2004 e ROHDE amp SCHWARZ Power Supply NGMO Meaning Operation x yy is the version number of the currently installed firmware x yy nn Az Bz major version number minor version number currently selected IEEE address for the device type of power supply board mounted at location A in the NGMO Currently only type 3 is available type of power supply board mounted at location B in the NGMO2 Currently only type 3 is available 1 or or or Next screen after 2 seconds AS x xxxV y yyy A 1 A OFF PROT RDY REM BS x xxxV y yyy A 2 B OFF PROT RDY REM DVMA z zzz V 3 A OFF PROT RDY REM DVMB z zzz V 4 B OFF PROT RDY REM The examples above illustrating display depend on the current setting and
45. mA 2 8 A 0 to 5 V derating up to 1Aat 15V 5to25V 1 mV 0 03 3 mV 2 ms to 200 ms settable 1 to 10 values 7 A 0 5 A 5 mA 200 pA 10 pA O 1 uA 5 mA 1 mA 10 pA 2 ms to 200 ms settable 1 to 10 values 1 to 5000 points 10 us to 1 s in 10 us steps 1 to 100 5 A 0 5 A 0 Ato 74A in 200 pA steps 0 mA to 0 5 A in 10 pA steps 5 V to 25 V in 1 mV steps 3 5 e ROHDE amp SCHWARZ Power Supply NGMO Analysis of values Protection Functions OVP OCP Open sense lead detection General Data Remote control Control inputs Control outputs AC supply ACinput power Dimensions Mass Environmental Data Humidity Operating temperature range Nominal temperature range Storage temperature range Temperature coefficient 3 6 Unit Description PEAK MIN PEAK MIN HIGH LOW HIGH LOW RMS RMS AVERage AVERage 1 5 to 22 V settable 0 to 5A settable 0 to 4 V about set voltage settable 1 5 to 22 V settable 0 to 5A settable 0 to 4 V about set voltage settable IEEE488 2 RS232C 2 X measurement trigger 2 x output inhibit 2 x complete 4 x relay driver fault 110 115 V and 220 230 V selectable 50 to 60 Hz 220 VA max 220 VA max 210 8 mm x 87 6 mm x 420 mm without rear and buttom feet 7 5 kg 85 at 35 C non condensing 0 to 45 C 5 to 40 C 0 to 35 C full power output power 100 96 75 50 96 o
46. n POWER key 1 CHN A B DVM key 6 OUTP ON OFF key 2 U SET key 7 l SET key 3 OVP key 8 OCP key 4 SAVE key 9 RECALL key 5 MENU key 0 LOCAL key SHIFT key ENTER arrow key right arrow key left rotary knob VARIATION display unit foot 4 00 07 2004 amp ROHDE amp SCHWARZ Unit Description Power Supply NGMO 0 15 VDC 0 5A OUTPUT B s x ra 23 78 Fig 3 2 NGMO2 Rear view Channel A Connector Channel B Connector Mains 120 230 VAC Voltage Selector IEEE488 2 Connector RS485 232 Connector Control I O Connector NOOB WBD 3 2 1 Accessories 1 power cable e 2 output connectors e 1 operating manual 4 00 07 2004 3 3 e ROHDE amp SCHWARZ Power Supply NGMO 3 3 Specifications Constant voltage source Voltage setting Resolution Deviation with 10 AC supply variation from 10 to 90 load change Transient recovery time on load change 0 1 A to 1 6 A to recover within 20 mV with wide bandwidth direct connected at long leads sensed with narrow bandwidth direct connected at long leads sensed Transient voltage drop on load change 0 1 A to 1 6 A with wide bandwidth at long leads sensed ripple and noise output impedance voltage compensation Constant current source Peak current 1 ms Current setting within 1 8 to 5 V outside 1 8 to 5 V resolution Channel 1 0 to 15
47. nction CURRENT DVM for function DVM 4 00 07 2004 5 29 e ROHDE amp SCHWARZ Power Supply NGMO IEEE Commands 5 10 Remote calibration command summary Com mand Parameter Par value Description Def SCPI CAL ENTer PROT CODe NUM VAL 1 99999999 Unlocks calibration code 2222 CAL CHANge PROT CODe NUM VAL 1 99999999 Sets new calibration code CAL A Channel A Channel 1 CAL 1 Channel A Channel 1 CAL Channel B Channel 2 CAL2 Channel B Channel 2 STEP1 Sets output to 50mV STEP2 NUM VAL 0 200 mV Reads Val from external DVM STEP3 NUM VAL 14 000 16 000V Reads Val from external DVM STEPA Turns on measure voltage 5Volts STEPS lt NUM_VAL gt 0 800 to 1 200 Ohms Enters exact value of 1 Ohm cal resistor and do 5 Volts 5A Calibration STEP6 Turns on measure Voltage 15 Volts STEP7 NUM VAL 28 000 to 38 000 Ohms Enters exact value of 33 Ohms cal resistor and do 15 Volts 500 mA Calibration STEP8 Turns on measure Voltage 15 Volts STEP9 NUM VAL 2800 0 to 3800 0 Ohms Enters exact value of 3 KOhms cal resistor and do 15 Volts 5mA Calibration DATE NUM VAL NUM VAL NUM VAL
48. nstructions and warnings given in this operating manual Safety related symbols used on equipment and documentation from R amp S Observe Weight operating indication for instructions units gt 18 kg 1 The unit may be used only in the operating conditions and positions specified by the manu facturer Unless otherwise agreed the following applies to R amp S products IP degree of protection 2X Pollution severity 2 overvoltage category 2 altitude max 2000 m The unit may be operated only from AC supply mains fused with max 16 A 2 Formeasurements in circuits with voltages Vrms gt 30 V suitable measures should be taken to avoid any hazards e g use of appropriate measuring equipment fusing current limiting electrical separation insulation 3 If the unit is to be permanently wired the PE terminal of the unit must first be connected to the PE conductor on site before any other con nections are made Installation and wiring of the unit should only be performed by qualified tech nical personnel 4 For permanently installed units without built in fuses circuit breakers or similar protective de vices the supply circuit must be fused such as to provide suitable protection for the users and equipment 5 Prior to switching on the unit it must be ensured that the nominal voltage set on the unit matches the nominal voltage of the AC supply network PE terminal Ground terminal l Danger Warn
49. nual contains descriptions for all versions In chapters with differences in the description of the individual Power Supplies such differences will be specially emphasized The designation NGMO is used wherever the description applies for all versions If you use this manual for a NGMO1 Just ignore all descriptions and specifications which belong to the channel B of the power supply This is also valid for all status structure description and IEEE commands in chapter 4 and chapter 5 of this manual If you call a remote command for channel B the IEEE error message 403 invalid or non existant channel is returned when calling system error 1 1 e ROHDE amp SCHWARZ Power Supply NGMO Operator Information 1 2 1 NGMO1 The Power Supply NGMO 1 consists of the following assemblies e Keyboard with LC Display e Processor board Analog board for Channel A Power supply unit 1 2 2 NGMO2 The NGMC2 is equipped with two analog boards and therefore delivers two separate voltage sources and signal channels Apart from that the Power Supplies are absolutely identical 1 3 Purpose of the Handbook The operating manual contain all the information you will need to use the Power Supply NGMO This manual describes e safe installation and assembly appropriate and safe operation of the Power Supply Read the operating instructions carefully before you use the Power Supply The operating instructions contain important
50. oltage peaks exceed the set value the NGMO switches off automatically to protect the unit under test key 4 SAVE i SAVE With the SAVE key all settings can be stored in one of the memory locations 1 to 9 except the recall settings IEEE address serial interface data calibration data which are stored in memory location O 4 2 4 00 07 2004 amp ROHDE amp SCHWARZ Operation Power Supply NGMO Function Type Function element z key 5 MENU Pressing the MENU key allows you to select any of the 36 NGMO available optional functions with the variation knob A menu need not necessarily have submenus key 6 OUTPUT ON OFF ON OFF l The ON OFF key is used to turn the output of the current from the selected Power Supply A B or both on or off key 7 Current setting l SET Press I SET to set the output current limit of the channel you have selected The value you want can be entered and modified after you press the SHIFT key or by turning the variation knob The max settable value is 5 V at 5 A On a higher value than 5 V the max current output is limited to max 2 5 A 8 key 8 Overcurrent protection OCP Pressing this key allows you to choose between the options current protection mode or current limit mode When the current protection mode has been selected the output is switched off when the max output current exceeds the set current limit 9 ke
51. ower supply to the RST default conditions SAV lt CHAR_VAL gt or lt NUM_VAL gt Saves the present setup as the user saved setup 1 9 First user setting Ninth user setting MIN First user setting MAX Ninth user setting SAV lt CHAR_VAL gt Queries the possible min and max value MIN 1 MAX 9 SRE lt NUM_VAL gt See status model structure for further information Programs the service request enable register SRE lt NUM_VAL gt See status model structure for further information Queries the serviee request enable register STB See status model structure for further information Reads the status byte register ARM Sends a SENSE PULSE S TART ON command to both channels AARM Sends a SENSE PULSE S TART ON command to channel A BARM Sends a SENSE PULSE S TART ON command to channel B TRG Sends a SENSE PULSE S TART ON and a soft trigger command to both channels ATRg Sends a SENSE PULSE S TART ON and a soft trigger command to channel A 4 00 07 2004 IEEE Commands ROHDE amp SCHWARZ Power Supply NGMO Com mand Parameter Par value Description Def SCPI BTRg Sends a SENSE PULSE S TART ON and a soft trigger command to channel B TST Performs a checksum tes
52. p to 100 k samples per second That means samples can be taken and stored in time intervals off 10 us Because using a Sigma Delta AD converter with an high internal sampling rate even very short events lt lt 10 p will have an influence on the delivered 4 23 e ROHDE amp SCHWARZ Power Supply NGMO Operation sample value That is important to protect against losing information when observing signals over a long time period The sample interval can be set between 10 us and 1 s in 10 us steps At sample intervals greater than 10 uis the NGMO2 measure system samples internally in 10 us intervals and averages the taken samples to build values in the selected time intervals Example With a selected sampling interval of 1 00 ms every sample value that is stored in the measurement buffer is an average out of 100 samples Sample Values in Measurement Buffer Internal Sample Sample Interval Interval 10 us 0 1 ms Time Fig 4 4 Sample values The measurement buffer is able to store up to 5000 sample values which can be read out separately to generate graphic representations and which are used to build the specific pulse values as AVERage PEAK MIN HIGH LOW and RMS By selecting a sample Intervall of 1 s and the maximum sample number of 5000 the NGMO2 is able to observe a signal for a time period of mo re than 80 minutes without losing significant information about the sig nal course 4 24 4 00
53. ressed and shows OFF 2 Check that the Mains Voltage Selector 4 Fig 5 2 is set to the appropiate line voltage 3 Connect the female end of the power cable to the AC receptacle on the rear panel 4 Connect the Power Supply NGMO to the AC line 5 Press the push button Power on the front panel 4 2 2 Main Functions of the NGMO When the NGMC2 is powered up it displays the following start up information Rohde amp Schwarz NGMO2 Next screen after 4 seconds Ver x yy IEEE Adr nn Found A B Type Ver x yy IEEE Adr nn Found Az Bz 4 00 07 2004 4 5 Operation 4 00 07 2004 amp ROHDE amp SCHWARZ Power Supply NGMO Example 1 line 1 AS means that currently the settings for channel A are displayed If you turn the output on by pressing the OUTP on off key the display changes to AM indicating that this is now a measured value taken from the output terminals of the selected power supply X XXX is the output voltage If AS is displayed output off x xxx is the nominal voltage If AM is displayed output on x xxx is the voltage measured on the sense lines of the output terminals y yyy is the current limit output current IF AS or S is display ed in front of y yyy then y yyy is the current limit setting If AM is displayed y yyy is the actual current measured on the force lines of the output terminals line 2 A OFF means
54. rogram med by the user the output summary of the register is set to 1 which in turn sets the summary bit of the status byte register 4 6 2 Queues The NGMC2 uses an output queue and an error queue The response messages to query commands are placed in the output queue As vari ous programming errors and status messages occur they are placed in the error queue When a queue contains data it sets the appropriate summary bit of the status byte register 4 00 07 2004 amp ROHDE amp SCHWARZ Operation Power Supply NGMO Questionable Event Registers Condition Event Event Enable Register Register 7 Logical Calibration Summary Poteet OR Calibration Summary Fes ee L 2 o kpa o e m HR HA HERE err use a of CS Always Zero DO CONDition LEVENt ENABIe lt NRf gt ENABle Output Queue D Saves Status Request Byte Enable Register Register Standard Event Registers me eH mse Event Event Enable Pa NM Register Register O coe e pg E ciui i Bea pe sm o 9 H Legen NEM ges afeta a ee eem Tee tet 3 ERIS ER Command Error Le eL B NC NE ges e fret 4 M 2m Power On PON PON Fegicul EIE Master Summary Status MSS L amp MSB Measurement Summary Bit Sea z GSB Questonable Summary Bit TSH MAV Message Available E ESB Event Summary Bit E Le ae RQS MSS Request for Service Master Summary Status Ls QSB Operation Summary Bit Always Zero j E
55. strument is suitably cleaned using a soft lint free dust cloth Never use solvents such as thinners acetone or similar as they may damage the front panel labelling or plastic parts Any additional safety instructions given in this manual are also to be observed ROHDE amp SCHWARZ Contents Power Supply NGMO Contents 1 Operator Information 1 1 1 1 Preface 1 1 1 2 NGMO Versions 1 1 1 2 1 NGMO1 1 2 1 2 2 NGMO2 1 2 1 3 Purpose of the Handbook 1 2 1 4 Explanation of Symbols 1 3 1 5 Inspection 1 4 2 Safety 2 1 2 1 General 2 1 2 2 Safety Instructions 2 1 3 Unit Description 3 1 3 1 Introduction 3 1 3 2 Overview 3 2 3 2 1 Accessories 3 3 3 3 Specifications 3 4 3 4 Function Description 3 7 3 4 1 Communication 3 7 4 Operation 4 1 4 1 Operation Elements 4 1 4 2 Start Up 4 5 4 2 1 NGMC2 Line Power Connection and Power up 4 5 4 2 2 Main Functions of the NGMO2 4 5 4 2 3 Menu 4 9 4 3 Test Connections 4 20 4 3 1 Remote Sense 4 20 4 3 2 Local Sense 4 21 4 3 3 Output Impedance 4 21 4 4 Factory Defaults 4 22 Version 4 00 07 2004 1 e ROHDE amp SCHWARZ Power Supply NGMO Contents 4 5 Measurements 4 23 4 5 1 Reading back Voltage V Current I DVM 4 23 4 5 2 Dynamic Measurements 4 23 4 6 Status Structure 4 28 4 6 1 Status Byte and SRQ 4 28 4 6 2 Queues 4 28 5 IEEE Commands 5 1 5 1 IEEE 488 2 common commands and queries 5 1 5 2 FORMAT command summary 5 5 5 3 OUTPut command summary 5 6 5
56. t 15 Volt DISPlay Sets LCD to Maximum output voltage VOLTage MAXSet ting CHAR VAL Queries max settable output voltage Results 0 000 lt NUM VAL lt 15 000 4 00 07 2004 5 17 e ROHDE amp SCHWARZ Power Supply NGMO IEEE Commands MAX 15 Volt Com Parameter Par value Description Def SCPI mand MIN 0 DEFault 15 MAX 15 VOLTage LEVel IMMedi AMPLi CHAR VAL or Sets voltage amp 0 ate tude NUM VAL litude in 1 mV steps 0 000 0 Volt 15 000 15 Volt MIN 0 Volt DISPlay Sets LCD to main display VOLTage LEVel IMMedi ate AMPLi tude lt CHAR_VAL gt Queries voltage amplitude Results 0 000 lt NUM_VAL lt 15 000 MIN 0 DEFault 0 MAX 15 CURRent LIMit VALue CHAR VAL or NUM VAL Sets current limit in Amps max 2 5A on voltages above 5V 0 000 0 000A 5 000 5 000A MIN 0 000A MAX 5 000A DISPlay Sets LCD to main display CURRent LIMit VALue lt CHAR_VAL gt Queries current limit Results 0 000 lt NUM_VAL lt 5 000 MIN 0 DEFault 5 MAX 5 CURRent LIMit MAXSet CHAR VAL or Sets maximum 5 ting NUM VAL settable current limit 0 000 0 000A 5
57. t on ROM and returns 0 for test OK and 1 for test failed WAI Waits until all previous commands are executed DISPlay ENABIe CHAR VAL Enables or disables the LC Display ON OFF Turns display off fast data mode ON Turns display on MIN MAX Turns display off Turns display on DISPlay ENABle CHAR VAL Queries status of display Results OFF ON MIN OFF DEFault ON MAX ON DISPlay CHANnel CHAR VAL Changes the active display channel A Channel A B Channel B DVMA DVMA DVMB DVM B MIN Channel A DEFault Channel A MAX DVM B DISPlay CHAN nel Queries the active display channel setting Results A B DVMA DVMB MIN DEFault A 4 00 07 2004 e ROHDE amp SCHWARZ Power Supply NGMO IEEE Commands Com Parameter Par value Description Def SCPI mand MAX DVMB 5 4 4 00 07 2004 ROHDE amp SCHWARZ IEEE Commands Power Supply NGMO 5 2 FORMAT command summary Com Parameter Par value Description Def SCPI mand FORMat DATA CHAR VAL Specifies the ASCII v output data format for Fetch Read and Message command ASCii ASCII L
58. tatus model structure for further information MEAS ENABle Read the urement measurement enable register Results 0 to 32767 MEAS CONDitio Read the urement n measurement condition register See status model structure for further information Results 0 to 32767 OPER EVENt Read the ation operation event register See status model structure for further information Results 0 to 32767 OPER ENABIe NUM VAL 0 to 32767 Program the ation operation enable register See status model structure for further information OPER ENABle Read the ation operation enable register See status model structure for further information Results 0 to 32767 5 20 4 00 07 2004 IEEE Commands ROHDE amp SCHWARZ Power Supply NGMO Com mand Parameter Par value Description Def SCPI OPER ation COND ition Read the operation condition register See status model structure for further information Results 0 to 32767 QUES tionable EVENt Read the questionable event register See status model structure for further information Results 0 to 32767 QUES tionable ENABIe NUM VAL 0 to 32767 Program the questionable enable register See status model structure for further information QUES tionable ENABle Read
59. terval makes the total measuring time for one sample cycle The total time for one sample cycle is equal to the Sample length x Sample Interval AIB17 Sample start ON OFF Setting the Sample start to ON initialises a sample or analysis measurement After Sample start has been set to ON the sampling circuit waits for a trigger event This can be either an internal or external trigger After detecting the trigger condition the input signal is sampled using the given Sample interval see A B16 and the given Sample length see A B15 The number of times this measurement cycle is repeated is given by the Trigger count see A B13 If Trigger timeout see A B10 is set to a value greater than 0 and no trigger condition is met after Sampling start is set to ON for the time specified by Trigger timeout the error message Trigger timeout is displayed on the LCD Both conditions a normal end of measurement or a Trigger timeout will reset the Sample start to OFF A B18 Read SAMP Values Press ENT to display After a successful input signal measurement sampling see A B17 press the ENTER key to display the results at the sampling points Specific values can be selected with the arrow keys or the rotary knob A B19 Meas Read Type AVER PEAK MIN HIGH LOW RMS The Meas Read Type menu item lets you select a signal analysis type with the right or the left arrow key A
60. that is a multiple of 200 uA can be selected An asterisk on the right of line two of the LCD indicates when the 5A range has been selected in menu item A BO1 A B08 Trigger Level Range 0 5A 0 00 500 00A Lets you set the trigger level in the 0 5A range see menu item A BO1 and the signal analysis functions Any value between 0 00 mA Auto and 500 00 mA that is multiple of 10 uA can be selected An asterisk on the right of line two of the LCD indicates when 0 5A range has been selected in menu item A BO1 A BO9 Trigger Level DVM 6 000 25 000V Lets you set the trigger level for the DVM input see menu item A B06 and the signal analysis functions Any value between 6 000 V Auto and 25 000 Volts that is a multiple of 1 mV can be selected An asterisk on the right of line two of the LCD indicates when Sample Channel DVM has been selected in menu item A BO6 A B10 Trigger Timeout 0 60 000 seconds f you are using the analysis mode sampling mode this function specifies the time in seconds the sampling unit waits for a trigger condition before a timeout message is generated after turning sampling mode on Any value from 0 000 seconds infinite to 60 000 seconds can be selec ted 4 00 07 2004 Operation 4 00 07 2004 amp ROHDE amp SCHWARZ Power Supply NGMO A B11 Trigger Source int ext The trigger source function lets you select either an internal trig
61. the current NGMO2 mode 4 6 4 00 07 2004 Operation 4 00 07 2004 amp ROHDE amp SCHWARZ Power Supply NGMO 4 5 Measurements The NGMO2 provides three multiplexed measure channels on each supply channel A B for the measurement of output VOLTAGE and CURRENT as well as for the additional DVM input The VOLTAGE channel is used only for static measure functions readback CURRENT and DVM channels are used for static and dynamic measu re functions The value ranges represented below are valid for static and dynamic measurements Measurement OVR displayed values OVR DVM 6 V 5 999 25 999 V gt 26 V Voltage 0 000 15 999 V gt 16V Current Current Range 1 2 4A 3 9999 7 0000 A gt 7A Current Range 2 0 00 510 00 mA gt 510 mA Current Range 3 0 0000 5 1000 mA gt 5 1 mA Autorange Change Range at Borders R1 to R2 0 5000 A R2 to R3 5 00 mA R3 to R2 5 1000 mA R2 to R1 510 00 mA 4 5 1 Reading back Voltage V Current I DVM The sample interval for the static measurements readback is settable between 2 and 200 ms in 1 ms steps An averaging over up to ten va lues can be selected for this measurements 4 5 2 Dynamic Measurements Dynamic measurements are available for the CURRENT channel in the 5 A and 0 5 A range and for the DVM channel The measure system of the NGMO2 allows to record current and voltage waveforms with sampling frequencies u
62. tions could damage the Power Supply NGMO y bbb 4 00 07 2004 2 1 e ROHDE amp SCHWARZ Power Supply NGMO Safety 2 2 4 00 07 2004 Unit Description 4 00 07 2004 amp ROHDE amp SCHWARZ Power Supply NGMO 3 Unit Description 3 1 Introduction The Power Supply NGMO is accommodated in a 1 2 19 2 HU high units enclosure The NGMO is more than just a power supply for conventional test and measurement equipment it is an accurate multipurpose electronic device with two separate supply and measurement channels NGMO2 only NGMO1 only Channel A which can be used as the following high speed voltage source e programmable DC load precise digital multimeter sampling oscilloscope This unit fulfils all requirements of latest electronic battery powered communication products The high speed and the high reliability are features which are very im portant in a production environment The NGMO is an ideal device for testing complex high tech products such as mobile phones With the NGMO it is possible to create repro ducible and realistic powering conditions 3 1 e ROHDE amp SCHWARZ Power Supply NGMO Unit Description 3 2 Overview 17 amp ROHDE amp SCHWARZ POWER SUPPLY N amp MO2 2x0 15V 2 5 5A 192 1500 24 VARIATION co 40 0 0 n9 32 A A c ll lc om Oo co 4 0 0i 2 0 0 Oo 6 7 8 9 10 11 12 13 14 15 Fig 3 1 NGMOJ2 Front view pushbutto
63. tor max 4 00 07 2004 3 7 e ROHDE amp SCHWARZ Power Supply NGMO 3 8 Source Unit Description F p SIS CYCYOY DUT Risource Sense Ji Sense Ripur oes ee Visouce R L L L ains NCYCY Fig 3 4 Circuit diagram Mobile phone connected to the NGMO2 The NGMC2 provides 2 channels15 V 2 5 5 A with 7 Ay fast output transient response sample buffer for fast current and voltage measurements internal and external triggers for current and voltage measurements separate DVM s DC load capability up to 2 8 A high voltage setting resolution precise low current measurements very low ripple and noise settable output impedance for battery emulation OVP OCP open sense detection auxiliary inputs outputs output inhibit relay complete small dimensions 2 HU half 19 interfaces IEEE488 2 RS232 and USB fast programming effective manual operation 4 00 07 2004 Operation amp ROHDE amp SCHWARZ Power Supply NGMO 4 Operation 4 1 Operation Elements Fig 4 1 shows the Operation Elements for the Power Supply NGMO2 NOTE Operation elements and Start up functions of the Power Supply NGMO1 are identical with the NGMO2 Operation elements for channel B must in this case be ignored Readings in the LC Display correspond with the respective Power Supply 192 1500 24
64. ults CURRent DVM MIN CURRENT DEFault CURRENT MAX DVM PULSe MEAS ure STARt lt CHAR_VAL gt Select pulse measurement state OFF OFF Off ON On MIN Off 4 00 07 2004 5 11 e ROHDE amp SCHWARZ Power Supply NGMO IEEE Commands Com mand Parameter Par value Description Def SCPI MAX On DISPlay Sets LCD to SAMPLE START PULSe MEAS ure STARt lt CHAR_VAL gt Queries pulse measurement status Results OFF ON MIN OFF DEFault OFF MAX ON PULSe MEAS ure TYPE lt CHAR_VAL gt PEAK Selects pulse measurement and read type Peak AVER AGE MIN Min HIGH High LOW Low RMS Rms DISPlay Sets LCD to MEASURE READ TYPE PULSe MEAS ure TYPE lt CHAR_VAL gt Queries pulse measurement and read type Results AVERAGE PEAK MIN HIGH LOW RMS PULSe TRIGger LEVel HIGH lt CHAR_VAL gt or lt NUM_VAL gt Sets trigger level for 5A HIGH range 2 5A 1 00E 04 0 1 MA 7 7A AUTO or 0 Auto trigger MIN 0 mA gt AUTO MAX 7A DISPlay Sets LCD to TRIGGER LEVEL RANGE 5A PULSe TRIGger LEVel HIGH CHAR VAL
65. unt x greater than one at first the pulse value is formed for each of the x single measurement sequences and than the average of these x values is formed to get the final result 4 00 07 2004 Operation 4 00 07 2004 amp ROHDE amp SCHWARZ Power Supply NGMO PEAK The absolute highest sample that occurs during the measu rement sequence is stored as the PEAK value MIN Analogous to PEAK the absolute lowest sample value is u sed to form the MIN value For the computation of the HIGH LOW AVERage and RMS values a imaginary change level is used representing the middle between the PEAK value and the MIN value This change level is used to detect the beginnings and the ends of sig nal periods and the change between high and low frag ments of the signal course NOTE The pulse analysis for the HIGH LOW AVERage and RMS values delivers correct results only for periodical signals HIGH For the HIGH value the average of all samples with values higher than the change level is formed and stored LOW For the LOW value the average of all samples with values lower than the change level is formed and stored AVER For the computation of the AVERage value only complete recorded signal periods are considered and the average of all samples belonging to this periods is formed and stored RMS For the computation of the RMS value only complete recor ded signal periods are considered and the square average of all samples
66. value using the variation knob you must first se lect a function that accepts such entries by pressing e g U SET I SET and OVP In Menu mode the ENTER key must be pressed first to enter the setting mode When you have pressed the appropriate key a small underscore cursor indicates the digit that will be changed when you turn the variation knob A different digit can be selected with the arrow keys The right arrow key moves the underscore cursor one digit to the right the left arrow key moves the underscore cursor one digit to the left By turning the variation knob clockwise the value above the cursor and all digits left of the cursor are increased Turning the knob counter clockwise decreases the value To exit the entry mode press either the ENTER key or the function key The underscore cursor then disappears 4 2 3 2 How to Enter a Numerical Value directly To enter a numerical value directly you must also first select a function that accepts a numerical input by pressing e g U SET I SET and OVP After that the SHIFT key must be pressed To indicate that direct nume rical input is selected the NGMO2 displays a blinking block cursor in the input field Now a value can be directly entered using the blue digit keys The SHIFT key now acts as a double function key The SHIFT key is used to enter decimal points for numerical entries If a decimal point has already been entered or decimal points are not accepted SHIFT key aborts the on
67. y 9 RECALL The RECALL key is used to recall all settings stored in memory locations 1 to 9 Memory location 0 contains the factory default settings which can not be modified key 0 LOCAL LOCAL With the LOCAL key the unit operation can be switched from remote control back to local control key SHIFT SHIFT When the second function of the SHIFT key is selected numerical values and a decimal point can be entered Cancel a selected function by pressing the SHIFT key twice even key ENTER Pressing the ENTER key numerical entries made using the SHIFT key or deactivates a setting function 4 00 07 2004 4 3 e ROHDE amp SCHWARZ Power Supply NGMO Operation General Note e All function keys in the middle of the control panel CHN 1 A B DVM to 0 LOCAL and SHIFT are assigned two functions e g apart from the main setting functions the numerals 0 to 9 and the decimal point printed on the keys can be entered to alter values when the shift key has been pressed e UUT stands for unit under test in the sequel 4 4 4 00 07 2004 amp ROHDE amp SCHWARZ Operation Power Supply NGMO 4 2 Start Up 4 2 1 NGMO Line Power Connection and Power up The NGMO operates from a line voltage in the range 120 230 VAC at a frequency between 47 and 63 Hz Proceed as follows to connect the NGMO to the AC line and turn on 1 Before plugging in the power cable make sure that the power switch is off the POWER switch has not been p

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R&S®NGMO Single/Dual Channel Analyzer