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Tonghui TH 6900 Series Operation Manual

Constant power dc power supply
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OPERATION MANUAL
TH 6900 Series
Constant Power DC
Power Supply
TH 6900 Series DC Power Supply
V 1 .1 @ 2022.06

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  • Page 1 OPERATION MANUAL TH 6900 Series Constant Power DC Power Supply TH 6900 Series DC Power Supply V 1 .1 @ 2022.06...

  • Page 2: Table Of Contents

    Table of Contents Chapter 1 Overview ......................1 1.1 Introduction ......................1 1.2 Product Features ....................1 1.3 Safety Instructions ....................2 1.3.1 Safety Symbols ..................2 1.3.2 Safety Brief ....................3 1.4 Unpacking & Installation ..................5 1.4.1 Selected Installation Location..............5 1.4.1.1 Inspection Before Unpacking ............

  • Page 3: Chapter 1 Overview

    Chapter 1 Overview Chapter 1 Overview Thank you for purchasing and using our products. Before you use this instrument, please first confirm the matters in Chapter 7 of the manual "Warranty" to protect your rights and interests. 1.1 Introduction TH6900 series constant power DC power supply (or DC power supply) is a DC type programmable power supply with exquisite appearance, small size, high performance, powerful function and simple operation.

  • Page 4: Safety Instructions

    Chapter 1 Overview the size of load resistance. ⚫ Built-in input undervoltage, short circuit, over-temperature protection, internal hardware input undervoltage, short circuit, over-temperature protection, can stop the output in the shortest time to protect the DC test power supply and the load in the connection.

  • Page 5: Safety Brief

    Chapter 1 Overview Indicates a switch that turns the power ON/OFF with the same Protective operator. The normally used Conductor button has two stable positions. High temperature: indicates that the temperature here is higher than the acceptable range of the Prohibit human body, do not arbitrarily contact to avoid injury to...
  • Page 6 Chapter 1 Overview Do not use the product for purposes other than those described in the manual. Before connecting the power supply, please check that the power supply meets the rated input value of the instrument, and make sure the switch is OFF.

  • Page 7: Unpacking & Installation

    "packing list", please contact the distributor or customer service center of Changzhou Tonghui Electronic Co.Ltd. (3) Visually observe whether there are obvious such as metal scratches damage, scribbles, dents, etc., check whether...

  • Page 8: Environment

    Chapter 1 Overview notify Changzhou Tonghui Electronics Co., Ltd. or its distributors. Our customer service center will repair or replace the machine for you. Please do not return the product immediately without notifying Changzhou TongHui Electronics Co., Ltd. or its dealers.

  • Page 9: Input Wiring

    Chapter 1 Overview within 30cm and without any sundries. ⚫ Rapid changes in temperature must be avoided. Rapid changes in temperature can cause water vapor to condense inside the machine. When water vapor condensation occurs, the use of this power supply is prohibited.

  • Page 10: Battery Load Wiring Instruction

    Chapter 1 Overview Connect the output terminals to the load as shown in Figure 2-1(b), with the positive output and S+ connected to one end of the load at the same time, and the negative output and S- connected to the other end of the load at the same time, at this time the displayed voltage value is the actual voltage at both ends of the load, realizing the function of lead voltage drop compensation.

  • Page 11: Inductive Load Wiring Instruction

    Chapter 1 Overview forward conduction current is 1.5 times the maximum output current of the DC source. (4) Operation with contactors First, when connecting the DC test power supply to the load, the contactor must be disconnected; second, after the DC test power supply is turned on and the output is activated, the contactor is closed;...
  • Page 12 Chapter 1 Overview 1) Please do not use the wire that is too thin in diameter to avoid overheating of the connection wire, which may cause danger. 2) The ground wire is recommended to use copper braid with a single wire diameter of not more than 0.15mm.

  • Page 13: Chapter 2 Panel 1

    Chapter 2 Panel Description Chapter 2 Panel Description The content of this chapter is only a general description, the specific operations and detailed explanation refer to the corresponding content of Chapter 3. 2.1 Front Panel Description The front panel of TH6900 system power supply 2U model is the same, and the front panel of other models is the same as the front panel of 2U model.
  • Page 14 Chapter 2 Panel Description Start/Stop key Start or stop setting voltage and current output VOLT Voltage setting key, set the power output voltage value CURR Current setting key, set the power output current value Power value setting, used to set the power supply output POWER power MENU...

  • Page 15: Rear Panel Description

    Chapter 2 Panel Description 2.2 Rear Panel Description The rear panel of TH6900 system power supply 2U model is the same, and the rear panel of other models is the same as that of 2U model. Figure 2-2 is the rear panel schematic of the 2U model.
  • Page 16 Chapter 2 Panel Description Model 1500W: <150V reduced to 1000W Power Derating Model 3000W: <205V reduced to 2500W DC Output Voltage Accuracy ≤±(0.05%+0.04%FS) ±(%of output+offset) 0-100% Load Regulation ≤0.05% of full scale ±10%ΔU Linear Adjustment ≤0.02% of full scale Rate Load 10-100% adjustment time ≤2ms required...

  • Page 17: Voltage & Current Specifications

    Chapter 2 Panel Description Cooling Mode Temperature controlled fan Operating Temperature 0~50℃ Storage Temperature -20~70℃ Humidity <80%, no condensation Operational Height <2000m 2.3.2 Voltage & Current Specifications Power Ripple and Noise 750W 1.5KW 3KW Voltage Efficiency (20Hz-300KHz) (20Hz-20MHz) Current 20mVrms 75mVpp ≤92% 20mVrms...
  • Page 18 Chapter 2 Panel Description Weight 13.5Kg Figure 2 -3 Dimensions...
  • Page 19 Chapter 3 Operating Instructions Chapter 3 Operating Instructions 3.1 Introduction This chapter will describe in detail how to use the front panel of the power supply to achieve the power supply function and operation of the power supply, the preparation and inspection of the power supply before use: (1) Make sure that the power cable and input and output cables are properly connected.
  • Page 20 Chapter 3 Operating Instructions Figure 3-2 Standby Interface 3.2.2 Start & Stop Press the ON/OFF button, if the start is successful, the red indicator inside the ON/OFF button lights up, indicating that it is in the output working state, while the indicator shows that it is currently in the CV, CP or CC state, as shown in Figure 3-3.
  • Page 21 Chapter 3 Operating Instructions the knob to adjust the brightness, press F1 to save, or F4 to cancel saving to enter the standby interface; in the keyboard lock state only respond to key F4, press F4 to enter the standby interface;...
  • Page 22 Chapter 3 Operating Instructions 3.2.6 Alarm Setup The machine will send out alarms by signals for a variety of conditions, all alarm conditions will be displayed on the LCD screen, and there are alarm sound prompts, according to the different types of alarms machine, the alarm conditions can be divided into hardware alarms and software alarms, hardware alarm conditions include power failure alarm, over-temperature alarm, overload alarm, software alarm conditions include voltage,...
  • Page 23 Chapter 3 Operating Instructions If the voltage at the DC output terminal is lower than the set Voltage Lower voltage lower limit, this alarm will be triggered and the DC Limit Alarm output will be turned off. If the current at the DC output terminal is lower than the set Current Lower current lower limit, this alarm will be triggered and the DC...
  • Page 24 Chapter 3 Operating Instructions Figure 3-9 Shortcut Group Interface The VOLT voltage value, CURR current value, and POWER power value are selected by the knob or ↑, ↓ buttons. A white line will be indicated below the selected parameter, press the numeric keys or use the knob to modify the selected value.
  • Page 25 Chapter 3 Operating Instructions etc. A total of 50 sequences can be stored, each sequence contains 22 steps, each step of the function can be set independently, a total of 12 independent functions, including cycle control, ramp mode output and other rich control functions. 3.2.9.1 Basic Operation of Sequence Test In the standby interface, press F2 to enter the main sequence test interface, as shown in Figure 3-11.
  • Page 26 Chapter 3 Operating Instructions When using the sequence test, avoid frequent voltage switching, if this can lead to damage to the internal devices of the power supply. The following principles should be followed when using: Pre-estimate the frequency of the desired sequence and the peak-to- peak value of the voltage (VPP).
  • Page 27 Chapter 3 Operating Instructions During the sequence test execution, press F1 to pause the test or F2 to stop the test, at this time the output will keep the output value of the current step. When stopping the test, return to the main sequence test interface.
  • Page 28 Chapter 3 Operating Instructions Delete (F4): Delete the current step. Enter the sequence test editing interface, the function selection position is reversed, use the knob to select any one of the 13 functions, after selecting the function, select the parameter to be edited by the ↑...
  • Page 29 Chapter 3 Operating Instructions voltage, current, power value and duration to output at the set voltage, current, power and duration, as shown in Figure 3-16. Figure 3-16 VI Mode Ramp V - Voltage ramp mode, i.e., the output voltage gradually reaches the set end value (Vf) from the initial value (Vi) in a slope within the set time.
  • Page 30 Chapter 3 Operating Instructions Figure 3-18 Current Slope Mode Repeat - Return to the starting position of the sequence (the starting position here may be the beginning of the current sequence or the beginning of another sequences, depending on the number of branches in the sequence execution and the use of the SubCall function) to execute the previous steps of Repeat once again, and when Repeat is encountered again, it will be skipped and the next steps will be executed.
  • Page 31 Chapter 3 Operating Instructions Figure 3-21 Return Function Loop - The function of this command is to make all the steps between Loop command and Next command repeat the set number of times, the maximum is 65535 times, and after executing the set number of times, continue to execute the steps after Next command.
  • Page 32 Chapter 3 Operating Instructions Figure 3-23 Loop end control Stop - Stops the sequence test and returns to the main sequence test interface, while maintaining the last output value. This command is commonly used in the last step of the sequence to stop a test, as shown in Figure 3-24.
  • Page 33 Chapter 3 Operating Instructions Figure 3-26 Pause Function 3.2.9.5 Sequence Parameter Deletion In the main interface of sequence test, press F4 to enter the sequence deletion interface, as shown in Figure 3-27. Figure 3-27 Sequence Deletion Interface Press F1 to confirm the deletion and return to the main interface of sequence test, this operation will set all the steps in the currently selected sequence to NOP.
  • Page 34 Chapter 3 Operating Instructions Figure 3-28 Sequence Test Distance Implementing this waveform starts with knowing how to set up each step correctly. That waveform above requires two sequences to complete, one to implement the voltage ramp up, continues and down. The other implements the output of the voltage and stop loop.
  • Page 35 Chapter 3 Operating Instructions to 20V, current limit (need to be set according to the actual load condition, here it is assumed that the load is light and set to 1A), set the duration to 1s (0:00:01:000). After editing, press F1 to copy the current step parameters to the buffer for later steps.
  • Page 36 Chapter 3 Operating Instructions prompt whether to save TEST00, select F1 to save. Sequence 2: In the standby interface, press F3 to enter the main sequence test interface, use the numeric keys or knob to adjust the sequence number, select TEST01, then press F4 to delete TEST01, the deletion operation makes all the steps of TEST01 set to NOP to reset to a definite state.
  • Page 37 Chapter 3 Operating Instructions wave, set the output voltage or current, Amp: the amplitude of signal generated, Offset: the offset based on zero point, not less than the assigned value, Value: limited current value, Freq: the frequency of the output signal. When the parameters are set, the output voltage or current depicts a sinusoidal waveform under the premise that the load resistance value is constant.
  • Page 38 Chapter 3 Operating Instructions Figure 3-31 Output Rectangular Waveform Figure 3-32 shows the trapezoidal waveform parameter setting, setting the signal amplitude, offset value based on the bottom of the trapezoidal waveform, the negative slope time of the trapezoidal waveform signal, the top value time of the trapezoidal waveform signal, the positive slope time of the trapezoidal waveform signal, and the basic value of the trapezoidal waveform signal, set different gain and attenuation time can form...
  • Page 39 Chapter 3 Operating Instructions follows the following equation: �� �� �� �� = �� [1 − �� (�� − 1)] ���� ���� Among −�� �� ���� ���� �� �� �� = (1 − ) �� ���� �� ���� �� ���� −...
  • Page 40 Chapter 3 Operating Instructions Figure 3-34 SAS Function Setting Interface After the parameter editing is finished, use Enter or F3 key to confirm. If the parameter setting exceeds the range of the setting limit, the system will display an error message on the interface and will not respond to this key operation, as shown in Figure 3-35.
  • Page 41 Chapter 3 Operating Instructions 3.2.12 Parallel Operation This series of power supply models with the same specifications can be used in parallel, and parallel connection can increase the power output capacity and output current. When connecting in parallel, simply connect the DC output terminals of each unit to each other.
  • Page 42 Chapter 3 Operating Instructions and actual values for this machine. If one or more correctly configured slaves are found, the number of slaves with the addresses of the slaves and the total current and total power integrated will be displayed on the master screen. If no slave is found or the number displayed is incorrect, check the connections and settings between all slaves and the master, then repeat the setup preocedure.
  • Page 43 Chapter 3 Operating Instructions up and down arrow keys. The rise time can be adjusted by the numeric keys or knob. V-Rise/V-Fall: voltage rise slope and fall slope. I-Rise/I-Fall: current rise slope and fall slope. P-Rise/P-Fall: power rise slope and fall slope. The rise/fall time is the time for one voltage point to rise/fall to another voltage point when the power supply output is On.
  • Page 44 Chapter 3 Operating Instructions interface, ensure that no voltage higher than the specified value is output to the pin; (3) The setpoint input pin cannot be left dangling; (4) Requires three sets of set values to be provided each time. 3.2.14.1 Analog Control Interface Description The analog interface control function allows the user to control the power supply via external analog signals, including: voltage,...
  • Page 45 Chapter 3 Operating Instructions The accuracy is less than 0~10V 0~5V 0.2%, input R_PROG Set internal resistance corresponds to 0~100% R impedance is greater than Short-circuit protection for Overvoltage alarm Overvoltage alarm DGND Overheating or power Overheating power Short-circuit protection for failure alarm failure alarm DGND...
  • Page 46 Chapter 3 Operating Instructions Figure 3-40 Set Voltage, Current and Power Values with External Voltage Source Figure 3-41 Set Output Voltage, Current and Power Values Through Resistors 3.2.14.3 Read Actual Values of Voltage and Current This feature enables the voltage, current output to be monitored using pins 5, 7 and the ground pin (i.e.
  • Page 47 Chapter 3 Operating Instructions connected to a digital voltmeter (DVM). The output voltage monitoring range (reflecting the power supply output voltage and current from zero to full scale) can be selected between 0 to 10V or 0 to 5V. The wiring is shown in Figure 3-42. Figure 3-42 Monitor Output Voltage and Current Value...
  • Page 48 Chapter 4 Troubleshooting & Maintenance Chapter 4 Troubleshooting & Maintenance 4.1 Care and Maintenance 4.1.1 Regular Maintenance If the equipment is not used for a long time, it should be energized once a month, and the energizing time should not be less than 30 minutes.
  • Page 49 1. Internal machine overheating 2. If the alarm cannot be cleared, alarm 2. Internal function module failure please contact Changzhou Tonghui Electronics Co., Ltd. or your local distributor 1. Observe whether the three- phase power supply wiring is 1. Three-phase power supply...
  • Page 50 Chapter 4 Troubleshooting & Maintenance Dustproof measures should be taken when storing, and it is forbidden to stack any items on the instrument. 4.3.2 Transport 4.3.2.1 Packaging The instrument should be returned for repair or shipped in its original packaging. If the original packaging cannot be found, be sure to pack it accordance with the following requirements: (1) First seal the instrument in a plastic bag;...
  • Page 51 Chapter 5 DC Test Power Supply Communication Protocol 5.1 Communication Protocol Command Format 5.1.1 Communication Mode RS232 or RS485, default is RS232. The PC is the master by default, and the standard unit is the slave. Master-slave response mode is adopted, and the slave does not send data to the master when the address does not match.
  • Page 52 word + command parameters + checksum + number of bytes at the end of the frame, the high byte is in the front and the low byte is after. Slave address: 1 byte 0x00 is used as a special address for system broadcast. All devices in the address range of 0x01~0xFF can receive broadcast commands, but can only execute other types of commands except query class, and do not return answers to...
  • Page 53 End of Frame: 1 byte, fixed to 0x7D, i.e. ASCII code of '}'. 5.2 Summary Table of Communication Protocol Commands Functional meaning Command Command Command Class Type Word Parameter 0x00 Stop 0x01 Start up Control Class 0x0F 0x02 Reset to factory state 0x03 Dismiss the alarm 0x00...
  • Page 54 0x04 Store the current sequence 0x05 Delete the current sequence 0x07 Start-up sequence test 0x08 Stop sequence test 0x09 Pause sequence test 0x0A Continue sequence test 0x00 Query the current serial number Sequence Test 0xC5 0x01 Query the current sequence test status Query Class 5.3 Communication Protocol Command Description (1) Control class commands (0x0F)
  • Page 55 (2) Query class commands (0xF0) Command word: 00H Command function: Query the power supply output status (non-start state, CC, CV) Command format: 0x7B XX X 0xF0 0x00 X 0x7D Command length: 8 Format description: no parameter Command example: 7B 00 08 01 F0 00 F9 7D Return format: 0x7B XX X 0xF0 0x00 XX 0x7D Return length: 9 Format description: 1-byte parameter, where the...
  • Page 56 Return format: 0x7B XX X 0xF0 0x11 XX X 0x7D Return length: 10 Format description: 2 bytes 1 parameter, the parameter is the hexadecimal value of the voltage output value, the value is the decimalized value of the data Return command example: 7B 00 0A 01 F0 11 00 45 51 Return command description: The output current is 0.69A (assuming 61015-600 with a resolution of 0.01 in front of the 2nd digit at the beginning of the lower...
  • Page 57 Return command description: 17.89V, 0.69A, 0.01kW. Command word: EBH Command function: Query current status Command format: 0x7B XX X 0xF0 0xEB X 0x7D Command length: 8 Format description: no parameter Command example: 7B 00 08 01 F0 EB E4 7D Return format: 0x7B XX X 0xF0 0xEB XX 0x7D Return length: 9 Format description: 1 byte 1 parameter:...
  • Page 58 Format description: 2 bytes 1 parameter: the parameter is the hexadecimal value of the software version number, the value is the decimalized value of the data Return command example: 7B 00 0A 01 F0 EF 00 64 4E 7D Return command description: The software version number is 1.00 (3) Query class commands with parameters (0x F1) Command word: 50H...
  • Page 59 Command word: 52H Command function: Query the set current of the storage group Command format: 0x7B XX X 0xF1 0x52 XX 0x7D Command length: 9 Format description: 1 parameter (0-9) Command example: 7B 00 09 01 F1 52 00 4D 7D Return format: 0x7B XX X 0xF1 0x52 XX X Return length: 10 Format description: 2 bytes 1 parameter: the parameter...
  • Page 60 Format description: 2 bytes 1 parameter, the parameter is the hexadecimal value of the voltage setting value, the value is the decimalized value of the data Return command example: 7B 00 0A 01 A5 00 0A 14 CE 7D Return command description: 0A14: 2580, indicating that the current setting value is 258.0V (assuming 61015-600, the decimal place is in front of the first digit at the beginning of the lower position)
  • Page 61 d) Command word: 40H Command function: Query SAS mode setting value (V Command format: 0x7B XX X 0xA5 0x40 X 0x7D Command Length: 8 Format description: no parameter Command example: 7B 00 08 01 A5 40 EE 7D Return format: 0x7B XX X 0xA5 0x40 XX XX XX XX X 0x7D Return length: 16 Format...
  • Page 62 Command format: 0x7B XX X 0xA5 0x41 X 0x7D Command length: 8 Format description: no parameter Command example: 7B 00 08 01 A5 41 EF 7D Return format: 0x7B XX X 0xA5 0x41 XX X 0x7D Return length: 10 Format description: 2 bytes 1 parameter, the parameter is the hexadecimal value of V , the value is the decimalized value of the data...
  • Page 63 the decimalized value of the data Return command example: 7B 00 0A 01 A5 43 0D AC AC 7D Return command description: The set V is 350.0V (assuming 61015-600, the decimal place is in front of the first digit at the beginning of the lower position) h) Command word: 44H Command function: Query the set I value...
  • Page 64 is the hexadecimal value of the current setting value, the value is the decimalized value of the data Command example: 7B 00 0A 01 5A 01 00 EF 55 7D Example description: Set the output current to 23.9A Command word: 02H Command function: Set the power value Command format: 0x7B XX X 0x5A 0x11 XX X 0x7D Command length: 10...
  • Page 65 Command function: Set the voltage of the storage group Command format: 0x7B XX X 0x5A 0x52 XX X 0x7D Command length: 10 Format description: 2 bytes 1 parameter, Command example: 7B 00 0A 01 5A 52 09 C4 84 7D Command description: The current step voltage is set to 250.0V g) Command word: 53H...
  • Page 66 Command function: Define the function of the selected step, this command has more parameters Command format: 0x7B XX X 0x5C 0x03 XXXXX 0x7D Command length: varies with different modes Format description: The first byte is the step number (0- 21), the second byte is the mode: 0: NOP, 1: VIMode, 2: Ramp V, 3: Ramp I, 4: CP, 5: Repeat , 6: SubCall, 7: Return, 8: Loop, 9: Next, 10: Stop, 11: Goto, 12: Pause, when the selected mode is 0 (NOP), 5 (Repeat), 7...
  • Page 67 Step number In the above table: * stands for no such parameter, each X represents a byte command example: 7B 00 0A 01 5C 03 00 00 6A 7D Set step 0 to NOP 7B 00 15 01 5C 03 01 01 03 E8 00 64 00 64 0F FF FF 00 FF 36 7D Set step 1 to VI mode 7B 00 17 01 5C 03 02 02 03 E8 03 64 00 64 00 64 00 FF FF 00 09 9C 7D Set step 2 to RAMPV mode...
  • Page 68 Command length: 8 Format description: None Command example: 7B 00 08 01 5C 07 6C 7D Command word 08H Command function: Stop sequence test Command format: 0x7B XX X 0x5C 0x08 X 0x7D Command length: 8 Format description: None Command example: 7B 00 08 01 5C 08 6D 7D g) Command word 09H Command function: Pause sequence test Command format: 0x7B XX X 0x5C 0x09 X 0x7D...
  • Page 69 status Command format: 0x7B XX X 0xC5 0x01 X 0x7D Command length: 8 Format description: none Command example: 7B 00 08 01 C5 01 CF 7D (0: sequence test completed, 1: running, 2: paused) 5.4 Communication Protocol General Return Command Description The general return data frame format for the lower computer is as follows:...
  • Page 70 0x02 Command type error Command type is not in the scope of communication protocol 0x03 Command word error When the command word is not in the scope of the communication protocol This error code is answered when the current state does not allow the received command to be executed.
  • Page 71 Chapter 6 DC Test Power Supply SCPI Protocol 6.1 Basic Command (1) Clear alarm messages *CLS This command is used to clear the alarm information Command syntax: *CLS Parameters: None (2) Reset factory settings *RST This command resets the power supply to the factory set state.
  • Page 72 This command is used to read the output power of the latest power supply. Command syntax: MEASure[:SCALar]:POWer[:DC]? Parameters: None Return parameter: <NRf> Return parameter unit: kW Example: MEASure:POWer? (4) Query voltage, current, and power output value MEASure? This command is used to get the latest measured values (voltage, current, power).
  • Page 73 (3) Query and set the output power value [SOURce:] POWer This command is used to set the power output of the power supply. Command syntax: [SOURce:]POWer < NRf> Parameters: NRf Unit: kW Reset value: 0.0 Example: [SOURce:]POWer 1.0 Query command: [SOURce:]POWer? Return parameter: NRf (4) Set the power output state [SOURce:] OUTPut...
  • Page 74 Command syntax: [SOURce:]VOLTage:MAXimum <NRf> Parameters: NRf Unit: V Reset value: MAXimum Example: [SOURce:]VOLTage:MAXimum 24.0 Query command: [SOURce:]VOLTage:MAXimum? Return parameter: NRf (7) Set the minimum current value of the power supply [SOURce:]CURRent:MINimum This command is used to set the minimum current value of the power supply.
  • Page 75 Reset value: 0.00 Example: [SOURce:]POWer:MINimum 0.00 Query command: [SOURce:]POWer:MINimum? Return parameter: NRf (10) Set the maximum power value of the power supply [SOURce:]POWer:MAXimum This command is used to set the maximum power of the power supply. Command syntax: [SOURce:]POWer:MAXimum <NRf> Parameters: NRf Unit: kW Reset value: MAXimum...
  • Page 76 (13) Set the power supply current rise time [SOURce:]CURRent:RISE This command is used to set the power supply current rise time. Command syntax: [SOURce:]CURRent:RISE < NRf> Parameters: NRf Unit: S Reset value: 0.0 Example: [SOURce:]CURRent:RISE 10.0 Query command: [SOURce:]CURRent:RISE? Return parameter: NRf (14) Set the power supply current fall time [SOURce:]CURRent:FALL This command is used to set the power supply current fall...
  • Page 77 Command syntax: [SOURce:]POWer:FALL <NRf> Parameters: NRf Unit: S Reset value: 0.0 Example: [SOURce:]POWer:FALL 3.0 Query command: [SOURce:]POWer:FALL? Return parameters: NRf 4, 6.4 PV Command (1) Set VOC value SOLar:EDIT:SAS:VOC This command is used to set VOC. Command syntax: SOLar:EDIT:SAS:VOC < NRf> Parameters: NRf Unit: V Example: SOL:EDIT:SAS:VOC 2.0...
  • Page 78 (4) Set IMP value SOLar:EDIT:SAS:IMP This command is used to set IMP. Command syntax: SOLar:EDIT:SAS:IMP < NRf> Parameters: NRf Unit: A Example: SOL:EDIT:SAS:IMP 5.0 Query command: SOLar:EDIT:SAS:IMP? Return parameter: NRf Chapter 7 Warranty Warranty period: The warranty period is twelve months from the date of shipment from the company for those who use the instrument purchased from the company, and from the date of shipment from the operating department for those who purchase...
  • Page 79 Chapter 8 Appendix 8.1 Version History This manual will be continuously improved for ease of use. Due to the possible errors or omissions in the manual, the improvement and perfection of instrument functions, the update of technology and the upgrade of software, the manual will be adjusted and revised accordingly.

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