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1.6.3

Transient Operation Menu

Press

key in desired mode to enable its transient operation, and press

key to enter

into transient setting menu, which is shown as below:

Function Description

Example

LevelL

Transient low level

1.000A

LevelH

Transient high level

2.000A

TimeL

Time for transient low level

600.00ms

TimeH

Time for transient high level

600.00ms

TimeR

Time for transient rising edge

0.01ms

TimeF

Time for transient falling edge

0.01ms

MODE

Continuous (Cont) Pulse (Puls) Toggle

(Togg)

Cont

Note: Transient operation may be used in CC, CV, and CR modes.

1.6.4

List Operation Menu

Press

key +

key to enter into the list operation menu, which is shown as below:

Function Description

No.

Select sequence (list) number

（

0-6

）

Memo Sequence

memo

(10

characters

）

Data: <New/Edit>

Create a new or edit an existing

sequence

Count

Cycle times

（

1-65535

）

Chain: Off

Sequence number to be

chained with (0-6

，

off)

Press

and

keys in list operation menu to select Data: <New/Edit>, and select New or

Edit with the knob or

and

keys. Then press

key to enter into sequence data editing

status, which is shown as below:

Function Description

01. 10000.00000s
CCH 5.000A

Sequence (List) number
Time
Mode Set value

1.7

Display Messages

Содержание 3720A

Страница 1: ...12 2 3 1 4 Transient Current Level 12 2 3 1 5 Software Current Limit 12 2 3 2 Constant Voltage Mode CV 12 2 3 2 1 Setting Ranges 13 2 3 2 2 Immediate Voltage Level 13 2 3 2 3 Triggered Voltage Level...

Страница 2: ...Functions 30 2 15 1Trigger Function Selection 30 2 15 2 Knob Function 31 2 15 3 Key Sound 31 Chapter3 Installation 31 3 1 Initial Check 31 3 2 Environment Installation Location 31 3 3 Power On Self T...

Страница 3: ...t Rise Fall Rate in CC Mode 61 4 14 6 Trigger Function Selection 62 4 14 7 Knob Function 62 4 14 8 Key Sound 62 4 14 9 Communication Interface 63 Chapter5 Remote Programming Operation 64 5 1 Communica...

Страница 4: ...even though the input voltage is 0V This is especially suitable for fuel cell solar cell and other new energy test applications Perfect protection assures high reliability in the most complicated tes...

Страница 5: ...ote sense terminal Input binding posts Knob Entry keys secondary function keys Annuciators Switch key for secondary function Left Right key Up Down key Display switching key 1 3 Rear Panel Fig1 2 Rear...

Страница 6: ...n blue To use the secondary function please press key first then press the relevant key List 1 1 Description for Keys 0 Local key 1 Save key 2 Recall key 3 Error code display key 4 List start key 5 Li...

Страница 7: ...Parameter Description Load Default Yes No Restore default Yes No Short On Off Short circuit mode On Off Von Latch On Off Von latch On Off Von Point 0 000v Set Von voltage point Von point CV Curr Limit...

Страница 8: ...aved parameters in location 0 will be recalled automatically 1 6 2 Mode Selection and Parameter Setting Menu Press key to enter into mode selection and parameter setting menu which is shown as below F...

Страница 9: ...nt Note Transient operation may be used in CC CV and CR modes 1 6 4 List Operation Menu Press key key to enter into the list operation menu which is shown as below Function Description No Select seque...

Страница 10: ...V Mode The first line shows measured voltage and current levels The second line shows voltage set level CV mode and input status of the load ON OFF CR Mode The first line shows measured voltage and cu...

Страница 11: ...icate medium resistance mode transient operaion and tCRH indicates high resistance mode transient operaion t indicates transient operation and input status of the load ON OFF List Operation The first...

Страница 12: ...l Power Pressing and key can switch the display of load status and actual power On the display screen of actual power the first line shows actual voltage and current the second line shows set level an...

Страница 13: ...except key key All operations on electronic load are controlled by remote controller The electronic load will return to local control and REM remote control annunciator is turned off after receiving t...

Страница 14: ...regardless of the change of input voltage see Fig 2 1 Press key in basic mode to enter into mode selection and parameter setting menu Choose CCH or CCL mode with and keys Input the current level via t...

Страница 15: ...Y 372x Series Electronic Load SCPI Programming Guide 2 3 1 4 Transient Current Level The load will switch between the transient high current level LevelH and transient low current level LevelL when th...

Страница 16: ...ltage level only can be set via remote command VOLTage TRIGgered NRf Once a voltage level is triggered subsequent triggers will become invalid until another VOLTage TRIGgered NRf command is received T...

Страница 17: ...ched from CRL to CRH the input will be turned off around 5ms Besides it is noted that the resistance set level may change with the resistance range to fit the new range Take 3721A for example the pres...

Страница 18: ...ource mode CPC The CPV mode is applied to voltage source test and the CPC mode is applied to current source test In CP mode the load consumes the constant power in accordance with the programmed value...

Страница 19: ...CP mode which can be set via mode selection and parameter setting menu or via remote command POWer NRf The immediate resistance level can also be modified directly with left right keys and the knob 2...

Страница 20: ...he load to the operating mode that needs transient test Note In transient test the Von point and current limit should be taken into consideration which may cause the shut down of the input thus interr...

Страница 21: ...it in cycles Fig 2 6 Continuous Transient Operation 2 4 2 Pulsed Transient Operation The trigger function is required for pulsed transient operation When there is no trigger occurs the load remains at...

Страница 22: ...he external trigger input TRAN ON Enables transient operation CURR LOW 5 Sets transient current low level to 5A CURR HIGH 10 Sets transient current high level to 10A TRAN HTIM 500us Sets transient hig...

Страница 23: ...age HIGH NRf RESistance LOW NRf RESistance HIGH NRf TRANsient RTIMe NRf TRANsient FTIMe NRf TRANsient MODE TOGGle TRANsient ON OFF The trigger can be an external trigger signal received via the TRIG i...

Страница 24: ...ration can be executed in the CC CV and CR modes The minimum duration for each step is 10us and the maximum one is 99999 99999s around 27 78 hours The list operation allows to be executed cyclically a...

Страница 25: ...current discharge to test battery capacity The discharge current and cut off voltage can be self defined When the battery voltage decreases to the cut off voltage the battery discharge test will stop...

Страница 26: ...value for each model is shown as follows Model 3720A 3721A 3722A 3723A 3724A Mode CCL 3 3A 4 4A 2 2A 3 3A 2 2A CCH 33A 44A 22A 33A 22A CV 0V 0V 0V 0V 0V CRL 0 018 0 018 0 06 0 06 0 12 CRM 1 8 1 8 6 6...

Страница 27: ...the trigger source is GPIB GET signal or TRG command The EXTernal mode Choose the External trigger input terminal or key key on the front panel as the trigger source The input signal at the External...

Страница 28: ...Von point Please see figure 2 11 if the Von Latch function is disabled once the input voltage reaches Von Point the input will be turned on automatically and once the input voltage is less than the V...

Страница 29: ...used to set the current rise rate in CC mode It can be set in main menu or via the remote command CURRent RISE RATE NRf If the current rise rate is 0 1A us and the current set level is 20A then the c...

Страница 30: ...s provided with an EEPROM memory which can save various parameters such as modes input status current voltage resistance transient settings limits etc 372x Series electronic load can save 10 groups of...

Страница 31: ...ger function selection Tran Trigger source Trigger source external Battery Mode Battery discharge operation off Battery mini voltage Battery minimum termination voltage 0V Battery discharge current Ba...

Страница 32: ...rent OC Overpower OP Overtemperature OT Reverse Voltage RV Once any of the above protection function is active the corresponding status bit in the status will be set the input will be turned off with...

Страница 33: ...e the input power exceeds the maximum rated power the hardware power limit circuit will be enabled immediately to limit the input power within the allowed range in the meantime the load will compute t...

Страница 34: ...derated power from 40 C to 50 C or the overtemperature protection will be caused Place the load in a location with good ventilation and keep a distance from electromagnetic interference Do not place...

Страница 35: ...nel of 372x Series electronic load is shown as fig 3 1 which mainly includes AC input part and communication interface part The AC input part includes AC input socket Fuse holder and Line voltage swit...

Страница 36: ...meanwhile only one type interface can be used by the load to communicate with external devices 3 5 Connections on the Front Panel The terminals of 372x Series electronic load on the front panel inclu...

Страница 37: ...ions As the influence of connected power and the conductor resistance of the load the voltage at the input terminals will be lower than output voltage when the current flows across the load When great...

Страница 38: ...n Under remote control status all operations on electronic load are controlled by remote controller The electronic load will return to local control after receiving the return command SYST LOCal Or yo...

Страница 39: ...s entered at present or exit mode selection and parameter setting menu 4 Press key to confirm and exit mode selection and parameter setting menu 5 Press key to turn on the load s input 4 5 1 CC Mode C...

Страница 40: ...Press key to turn on the load 0 000V 0 000A 5 800A CCH ON Solution 2 Procedures Operation Descriptions Display 1 Move the cursor to the hundredths with key 0 000V 0 000A 5 120A CCH OFF 2 Rotate the k...

Страница 41: ...the knob together with keys to input the voltage value to 50 MODE CV VOLT 50 000V 4 Press key to confirm and exit the mode selection and parameter setting menu 0 000V 0 000A 50 000V CV OFF 5 Press ke...

Страница 42: ...be MODE CV Sets the mode VOLT 60 Sets the voltage value INP ON Turns on the load Note CV will be shown in the lower right corner of the display when the load is in CV mode 4 5 3 CR Mode CR Mode inclu...

Страница 43: ...resistance value to 1 8 MODE CRL RES 1 8000 3 Press key to confirm and exit the mode selection and parameter setting menu 0 000V 0 000A 1 8000 CRL OFF 4 Press key to turn on the load 0 000V 0 000A 1...

Страница 44: ...to confirm and exit the mode selection and parameter setting menu 0 000V 0 000A 100 00W CPV OFF 5 Press key to turn on the load 0 000V 0 000A 100 00W CPV ON 6 Check the present power value with 0 000V...

Страница 45: ...ht corner of the display when the load is in CPV or CPC mode 4 6 Short Circuit Operation The operating procedures for short circuit operation are shown below 1 Press key to enter into main menu and se...

Страница 46: ...ircuit operation MODE CCH Sets the mode INP ON Turns on the load Example 2 Based on the last example exit the short circuit operation and turn off the load Procedures Operation Descriptions Display 1...

Страница 47: ...ressing key key or the signal at the trigger input terminal TRIG IN is low level 4 7 1 Continuous Transient Operation Example 1 Take 3721A as an example set the load voltage value to periodically swit...

Страница 48: ...r use the knob together with keys to set TimeR to 10ms and press key to confirm TimeR 10 00ms TimeF 100 00ms 9 Use Entry keys or use the knob together with keys to set TimeF to 20ms and press key to c...

Страница 49: ...ey to confirm and exit the mode selection and parameter setting menu 0 000V 0 000A 0 000A CCH OFF 2 Press key to enter into transient operation The display shows t to indicate in CCH status 0 000V 0 0...

Страница 50: ...RTIME 10us Sets a value to time for rising edge TRAN FTIME 10us Sets a value to time for falling edge TRAN MODE PULS Selects pulsed transient operation INP ON Turns on the load INIT Initialize the tri...

Страница 51: ...Mode value to Togg and press key to confirm Mode Togg 9 Press key to exit the transient operation menu 0 000V 0 0000A 200 00 tCRH OFF 10 Press key to turn on the load 0 000V 0 0000A 200 00 tCRH ON 11...

Страница 52: ...list operation menu 7 Select Edit then press to enter step edit screen 8 Use to select parameters 9 Use Entry keys or use the knob together with keys to input set value or use the knob key to select...

Страница 53: ...ss key to exit sequence operation menu 18 Press key key to activate sequence operation 19 Press key key to stop sequence operation After sequence editing the operating procedures for enabling and disa...

Страница 54: ...press key to confirm Clear Data Yes No 10 Use key or knob to select Yes and press key to confirm The data is cleared and step edit screen appears 01 0 00000s CCH 0 000A 11 Edit the step1 CCL 1A 1S Th...

Страница 55: ...000V 0 0000A 1 000A LCCL ON 20 Press key key to stop sequence operation 0 000V 0 000A 0 000A CCH OFF For the above operating procedures the corresponding SCPI commands should be LIST NUMB 0 Recalls t...

Страница 56: ...corner of the display flashes Use the knob or key to select operating mode to CCH and press key to confirm 06 1 00000s CCH 0 000A Step9 The set value in the lower right corner of the display flashes...

Страница 57: ...s list LIST ON Enables list operation LIST OFF Disables list operation 4 8 3 Starting Stopping the List Example 1 Start the No 0 sequence and stop the active sequence operation Steps Operation Descrip...

Страница 58: ...off the load and stop battery discharge operation 7 Press key to clear the discharged time and discharged capacity of the battery 8 Press key key to exit the battery discharge operation Example 1 Ent...

Страница 59: ...d BATT ON Activates the battery discharge operation screen BATT TERM VOLT 15V Sets termination voltage to 15V BATT CURR 3A Sets discharge current to 3A INP ON Turns on the load and start battery disch...

Страница 60: ...erations are shown below Procedures Operation Descriptions Display 1 Set the mode to CV set the voltage value to 40V turn off the load please refer to 4 5 2 section for detailed operations 0 000V 0 00...

Страница 61: ...ands should be SYST ERR Queries the error code and error messages 4 13 Triggered Operation When the triggering mode is EXTernal the triggered operations are shown below 1 Set pending trigger function...

Страница 62: ...fault values The detailed operations are shown below Procedures Operation Descriptions Display 1 Press key to enter into the main menu Load Default Yes No 2 Use the knob or key to select the parameter...

Страница 63: ...key to select the menu item Von Latch use the knob or key to select the parameter Off Press key to confirm Von Latch On Off 3 Use key to select the menu item Von Point use Entry keys or the knob toge...

Страница 64: ...to CCH mode set the current value to 2A set the current rise rate Curr Rise Rate in CC mode to 0 002A us set the current fall rate Curr Fall Rate in CC mode to 0 005A us turn on the load turn off the...

Страница 65: ...nob or key to select the parameter Tran Press key to confirm Trig Function Tran List 3 Press key to exit the main menu 0 000V 0 000A 0 000A CCH OFF For the above operating procedures the corresponding...

Страница 66: ...nu item Baud Rate use the knob or keys to select the parameter 9600 Press key to confirm Baud Rate 9600 19200 Step4 Use key to select the menu item Parity Check use the knob or key to select the param...

Страница 67: ...come apparent as you read this chapter The intent of this chapter is to help users quickly become familiar with remote programming operations Programming examples given in this chapter use the SCPI co...

Страница 68: ...ntrol e g SYSTem LOCal Or you can return the load to local control from remote control by pressing key key 5 4 Sending a Remote Command You can use the computer to set operation mode and operation par...

Страница 69: ...e trigger voltage to 5V and selects the external trigger source l INP OFF Turns off the load s input 2 MODE CV Selects the CV mode 3 VOLT TRIG 5 Presets the trigger voltage to 5V 4 TRIG SOUR EXT Selec...

Страница 70: ...rce and programs a pulse width of 1 millisecond 1 INP OFF Turns off the load s input 2 MODE CV Selects the CV mode 3 TRIG SOUR BUS Selects the bus as the trigger source 4 VOLT LOW 0 5 Sets the transie...

Страница 71: ...1 5mA High Range Resolution Accuracy 0 30A 1mA 0 1 10mA 0 40A 1mA 0 1 10mA Constant Voltage Mode Range Resolution Accuracy 0 80V 1mV 0 1 10mV 0 80V 1mV 0 1 10mV Constant Resistance Mode Low Range Reso...

Страница 72: ...esolution P 100W P 100W Accuracy 0 250W 1mW 10mW 0 1 600mW 0 400W 1mW 10mW 0 1 600mW Current Slew Rates Range CCH CCL 3 1mA us 3A us 100uA us 300mA us 1mA us 4A us 100uA us 400mA us Resolution 1mA us...

Страница 73: ...01Ah Short Circuit CCL Mode CCH Mode CV Mode CRL Mode CRM Mode CRH Mode CPV Mode CPC Mode 3 3A 33A 0V 0 018 1 8 18 270W 0W 4 4A 44A 0V 0 018 1 8 18 420W 0W Maximum Slew Rate Current Voltage 3A us 0 6...

Страница 74: ...del 3722A 3723A Input Ratings Current Voltage Power 1 0 20A 0 200V 200W at 40 C 0 30A 0 200V 350W at 40 C Input Characteristics Input Characteristics MinimumOperationVoltage FullScaleCurrent 1 2V 1 2V...

Страница 75: ...rent Measurement Low Range Resolution Accuracy 0 2A 0 1mA 0 05 4mA 0 3A 0 1mA 0 05 4mA High Range Resolution Accuracy 0 20A 1mA 0 05 8mA 0 30A 1mA 0 05 8mA Voltage Measurement Range Resolution Accurac...

Страница 76: ...35 Store Capacity 7 lists 7 lists Expanded Functions Chain Chain Battery Discharge Discharge Time Resolution Accuracy 1s 100h 1s 0 2 1s 1s 100h 1s 0 2 1s Battery Capacity Resolution Accuracy 1mAh 2000...

Страница 77: ...e Relative Humidity 0 50 C 85 0 50 C 85 Remote Interface 6 RS232 GPIB USB RS232 GPIB USB Programming Language SCPI SCPI AC Input Voltage Frequency AC110V or AC220V 15 48 to 63Hz AC110V or AC220V 15 48...

Страница 78: ...ution Accuracy V 50V 125 12500 1 54uS 0 3 0 5mS Constant Power Mode Range Resolution P 100W P 100W Accuracy 0 250W 1mW 10mW 0 2 600mW Current Measurement Low Range Resolution Accuracy 0 2A 0 1mA 0 05...

Страница 79: ...Number of Steps 1 50 Cycle 1 65535 Storage Capacity 7 lists Expanded Functions Chain Battery Discharge Discharge Time Resolution Accuracy 1s 100h 1s 0 2 1s Battery Capacity Resolution Accuracy 1mAh 20...

Страница 80: ...5 8kg 1 Maximum continuous power available is derated linearly from 100 of maximum at 40 C to 75 of maximum at 50 C 2 Conductance S 1 Resistance The siemens is the SI derived unit of conductance and t...

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