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Related Manuals for Tonghui TH8400 Series
Summary of Contents for Tonghui TH8400 Series
- Page 1 TH8400 Series : : No.3, Tianshan Road, New District, Changzhou, Jiangsu （ （ ） ） ， ， （ ） ， （ （ ） ） （ ）...
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Page 2: Table Of Contents
TH8400 Series Operation Manual Contents Chapter 1 Overview ........................3 Introduction ........................3 Condition of Use ......................3 Weight and Dimension ....................4 Safety Requirement ...................... 4 Electromagnetic Compatibility ..................5 Chapter 2 Panels ........................... 2 Introduction to front panel ................... 2 Introduction to rear panel ..................... - Page 3 TH8400 Series Operation Manual 4.4.1 Internal File Save ..................24 4.4.2 External File Call ..................25 4.4.3 Save Sampling Parameters ................. 25 Communication Setup (RS232) ................. 26 Chapter 5 Other Functions ......................27 Short Circuit Test Function ..................27 USB Interface Function ....................27 5.2.1...
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Page 4: Chapter 1 Overview
1.1 Introduction TH8400 series is a DC electronic load with high precision, high intelligence and easy operation. This series of instruments integrates a variety of test functions, has excellent performance, and adopts a liquid crystal screen display, which is clear and easy to operate. -
Page 5: Weight And Dimension
TH8400 Series Operation Manual Warm-up time after starting: ≥ 20 minutes Points for Attention (1) Please do not use it in bad environments such as dust, vibration, direct sunlight, corrosive gas, etc. (2) The instrument will not be used for a long time, please store it in the original packaging box or similar box in a ventilated room with a temperature of 5℃～40℃... -
Page 6: Electromagnetic Compatibility
TH8400 Series Operation Manual 1.5 Electromagnetic Compatibility The power supply transient sensitivity is in accordance with the requirements of GB6833.4. Conducted sensitivity is in accordance with the requirements of GB6833.6. Radiated interference is in accordance with the requirements of GB6833.10. -
Page 7: Chapter 2 Panels
TH8400 Series Operation Manual Chapter 2 Panels The content of this chapter is only a brief description. For specific operation and detailed explanation, please refer to the corresponding content in Chapter 3. 2.1 Introduction to front panel Figure 2-1 shows the front panel of TH8400. -
Page 8: Introduction
TH8400 Series Operation Manual functions of the soft key menu bar in the corresponding LCD screen. INPUT Load input port Remote Compensation The instrument selects the measurement port for remote measurement (SENSE) Table 2-1 2.2 Introduction to rear panel Figure 2-2 shows the rear panel of TH8400. -
Page 9: Summary Of The Displayed Page
TH8400 Series Operation Manual (1) Title bar: displays the name of the current page. (2) Information prompt area: real-time display of load prompt information or error information. (3) Working mode display area: displays the working mode during static operation. (4) Parameter setting area: used for parameter setting under the current function. -
Page 10: Setup (System Settings Page)
TH8400 Series Operation Manual conditions. Automatic test (Auto): Programmable multiple test modes. 2.4.2 SETUP (System Settings Page) System setting (System): Set the basic working mode of the instrument. Von/Voff: Set the loading and unloading voltage of the instrument. -
Page 11: Chapter 3 Function Setting And Use
TH8400 Series Operation Manual Chapter 3 Function Setting and Use This series of instruments integrates four basic modes of CC, CV, CR and CP and a variety of advanced functions such as dynamic operation, battery test, load effect, frequency conversion scanning and so on. -
Page 12: Constant Current(Cc)
TH8400 Series Operation Manual 3.1.1 Constant Current(CC) In this mode, no matter how the input voltage changes, the load will be pulled according to the set current, so that the load works in a constant current mode. Working current: the current value when the load is normally loaded ... -
Page 13: Constant Resistance(Cr)
TH8400 Series Operation Manual 3.1.3 Constant Resistance(CR) In this mode, the load is equivalent to a constant resistance. Working resistance: the load is equivalent to the resistance value. 3.1.4 Constant Power(CP) In this mode, the load will be pulled with a constant power value ... -
Page 14: Sequential Operation (List)
TH8400 Series Operation Manual Set value-A: value of current Ia Time-A: the total time of current from Ib to Ia (0.02mS～60S) Setting value-B: current Ib value Time-B: the total time that the current is maintained from Ia to Ib (0.02mS～60S) -
Page 15: Cr-Led
TH8400 Series Operation Manual (1) File settings: File: directly input the file to be programmed through the numeric keys Working mode: the way of sequential loading in a single file Continuous: continuous load sequence load Counting: Every time a trigger signal is received, the load is pulled in sequence, and "counting"... -
Page 16: Battery Test (Battery)
TH8400 Series Operation Manual Turn-on voltage (Vo): LED forward working voltage at forward working current Io It can be obtained from the VI curve in the LED specification. The real load is usually a series connection of n sections of LEDs, so Vo should be set to n times the parameters of a single section. -
Page 17: Time Test(Timing)
TH8400 Series Operation Manual Figure 3-4 Mode: The load supports three discharge modes of CC, CR and CP Loaded value: loaded parameters, according to the discharge mode, respectively current, resistance and power Stop condition: select voltage, time, battery capacity (Ah) and battery capacity (Wh) ... -
Page 18: Overcurrent Protection Test(Ocpt)
TH8400 Series Operation Manual Figure 3-5 Working mode: CC, CV, CR, CP and OFF can be selected in load mode Set value: the load value set according to the working mode Starting condition: Trigger timing signal, optional voltage, current or external trigger signal ... -
Page 19: Over Voltage Protection Test(Ovpt)
TH8400 Series Operation Manual Figure 3-6 Starting current: the current value when starting to load Cut-off current: the current value after ending load Increasing steps: the total steps of increasing current from the beginning to the end, range 1~1000 ... -
Page 20: Oppt
TH8400 Series Operation Manual Figure 3-7 Trigger level: confirm the protection voltage should be higher than the output voltage after the measured source voltage is protected 3.9 OPPT The load provides power protection test function, the principle is the same as 3.7 over current test (OCPT). - Page 21 TH8400 Series Operation Manual different load currents, the minimum current (I-Min), the normal current (I-Normal) and the maximum current (I-Max), and separately Continue for a preset time (Delay), then record the voltage value under different loads, and finally calculate the negative △V, load regulation (Regulation) and power supply internal resistance (Rs) according to the following enumerated formulas.
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Page 22: Sweep
TH8400 Series Operation Manual 3.11 Sweep The load provides dynamic frequency conversion scanning function to capture Vp+ and Vp- in the worst case of the power supply under test. The load is switched repeatedly between two current loads according to the preset current slope, and the duration of each current level will be determined by the scan frequency and duty ratio (Duty). -
Page 23: Automatic Test (Auto)
TH8400 Series Operation Manual 3.12 Automatic Test (AUTO) The automatic test function is used for product inspection of the production line. The load is loaded and tested in sequence according to the steps edited in the file, and the pass or fail is automatically determined. - Page 24 TH8400 Series Operation Manual Figure 3-11 7. After completing the settings on the file list, press the ON/OFF key to start the automatic test. File: Input the file to be edited through the numeric keys Count: the number of cycles of a file list repeated loading test...
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Page 25: Chapter 4 System Setup
TH8400 Series Operation Manual Chapter 4 System Setup This module is mainly used to set the basic parameters of the system and the working mode of the load. Operation method: Press the SETUP button to enter the system setting interface, select the corresponding setting function through the software bar button, enter the setting interface of the function, and then you can set the corresponding parameters of the function. -
Page 26: Start-Up Parameters
TH8400 Series Operation Manual 4.1.4 Start-up Parameters This function is used to select whether to load the data of the last shutdown when the instrument is turned on, or to boot with the default factory parameters. Factory parameters: no data is loaded when the instrument is turned on, and the instrument is turned on with the factory parameters ... -
Page 27: Source Under Test
TH8400 Series Operation Manual Figure 4-3 ** Waveform: as shown in Figure 4-4, display the current sampled voltage and current values in the form of waveform Figure 4-4 4.1.6 Source under Test Set the output type of the DUT in advance. Very important in CR, CP and other modes. -
Page 28: Security Setting (Protect)
TH8400 Series Operation Manual Pull voltage: Press the ON/OFF button. When the input voltage is lower than this value, the ON/OFF button light flashes. When the input voltage is greater than this value, the ON/OFF button light is always on and the load begins to pull. -
Page 29: File Store
TH8400 Series Operation Manual OFF: When the load triggers protection, continue to load. ON: When the load triggers protection, stop pulling. Turn-off delay: It is used to stop the load delay time when the load triggers protection, to prevent accidental pulses from triggering the load protection. If the load protection is still triggered after the delay time expires, the load is stopped. -
Page 30: External File Call
TH8400 Series Operation Manual the load are stored in Flash. Load on boot: 1. Make sure that the start up parameters are user parameters (see 4.1.1). 2. Move the cursor to the file that needs to be loaded and press load, the file displays √, indicating that the file is loaded when the computer is turned on. -
Page 31: Communication Setup (Rs232)
TH8400 Series Operation Manual 4.5 Communication Setup (RS232) The load supports RS232 communication. Baud rate: 4800, 9600, 19200, 38400, 115200 Data bits: 5, 6, 7, 8 Stop bits: 1, 2 Parity: No parity, odd parity, even parity, flag, space... -
Page 32: Chapter 5 Other Functions
TH8400 Series Operation Manual Chapter 5 Other Functions 5.1 Short Circuit Test Function The load can simulate a short-circuit circuit at the input, and perform a short-circuit load test according to the maximum current value of the maximum range of the load. -
Page 33: Chapter 6 Interface And Communication
TH8400 Series Operation Manual Chapter 6 Interface and Communication This instrument can use RS232C serial interface for data communication and remote control without instrument panel. This chapter introduces how to use the interface. 6.1 Remote Control Interface 6.1.1 RS232 Interface Descriptions The RS232C interface provided by the instrument is used to communicate with the computer. -
Page 34: Communicate With A Computer
(the length should be less than 1.5m) according to the figure, or purchase the serial interface cable between the computer and the instrument from Tonghui Electronics Co., Ltd. or directly purchase the standard DB9 core. Cable (crossover). - Page 35 TH8400 Series Operation Manual Check Terminator NL（new line，ASCII code 10） Contact Method Software Connector DB9 core Table 5-3 Software Protocol Since hardware communication is not used on the RS232 interface, in order to reduce the possible data loss or data errors in the communication, the instrument uses character loopback to communicate with the software.
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Page 36: Command Specification
TH8400 Series Operation Manual 6.2 Command Specification 6.2.1 Command Structure The instrument uses SCPI (Standard Commands for Programmable Instruments) commands, but the instrument does not support all common commands. SCPI commands are tree-like structures, which can have up to three layers, where the highest layer is called a subsystem command. Only when the subsystem command is selected, the layers under the command can be effective, and the colon is used to separate the command hierarchy. -
Page 37: Symbol Conventions And Definitions
TH8400 Series Operation Manual If the fourth character is a vowel, the abbreviation takes the first three characters. If the fourth character is not a vowel, the abbreviation takes the first 4 characters. E.g: MODE is abbreviated as MODE. TRIGger is abbreviated as TRIG. -
Page 38: Instrument Commands
TH8400 Series Operation Manual Reset and restart the instrument. 3.*TRG Give the instrument a trigger command, which is equivalent to the [TRIG] key on the front panel. 6.3.2 Instrument Commands 1.SYStem system setting instruction (1) SYStem: LANG sets the interface language of the instrument Command syntax: SYStem:LANG <lang>... - Page 39 TH8400 Series Operation Manual Command syntax: SYStem:TLATch <bool> Parameters: ON | OFF | 0 | 1 Example: SYS: TLAT 1 Query syntax: SYS:TLAT? Returns: 0 | 1 (8) SYStem: EPRo sets the external analog switch Command syntax: SYStem:EPRo <bool> Parameter: ON | OFF | 0 | 1...
- Page 40 TH8400 Series Operation Manual Example: CURR 1.5 Query syntax: CURR? Returns: <NR2> (3) CURRent: SLEW sets the same current rise and fall slope in static CC mode Command syntax: CURRent:SLEW[:BOTH] <NR2> Parameters: 0-MAX | MINimum | MAXimum Example: CURR: SLEW 0.5 Query syntax: CURR:SLEW? Returns: <NR2>, <NR2>...
- Page 41 TH8400 Series Operation Manual (4)VOLTage:ON Set the load voltage (Von) Command syntax: VOLTage:ON <NR2> Parameters: 0-MAX | MINimum | MAXimum Example: VOLT:ON 0.2 Query syntax: VOLT:ON? Returns: <NR2> (5)VOLTage:OFF sets the load unloading voltage (Voff) Command syntax: VOLTage:OFF <NR2> Parameters: 0-MAX | MINimum | MAXimum Example: VOLT:OFF 0.1...
- Page 42 TH8400 Series Operation Manual Query syntax: DYN: AWID? Returns: <NR2> (4) DYNamic: BWIDth sets the duration of B value in dynamic mode Command syntax: DYNamic:BWIDth <NR2> Parameters: 0.00001 – 60s | MINimum | MAXimum Example: DYN:BWID 10 Query syntax: DYN: BWID? Returns: <NR2>...
- Page 43 TH8400 Series Operation Manual Query syntax: LIST:FILE? Returns: <NR1> (2)LIST:MODE Set the working mode of the current List file Command syntax: LIST:MODE <mode> Parameter: CONT | COUNT | STEP Example: LIST:MODE STEP Query syntax: LIST:MODE? Back: CONT | COUNT | STEP (3) LIST:COUNT sets the number of cycles in counting mode Command syntax: LIST:COUNT <NR1>...
- Page 44 TH8400 Series Operation Manual 11.BATtery set the parameters in battery test mode (1)BATtery:MODE Set the discharge mode of battery test Command syntax: BATtery:MODE <mode> Parameter: CURRent | RESistent | POWer Example: BAT:MODE CURR Query syntax: BAT:MODE? Back: CURR | RES | POW (2)BATtery:CONDition sets the stop condition of battery test Command syntax: BATtery:CONDition <cond>...
- Page 45 TH8400 Series Operation Manual Back: VOLT | CURR | EXT (4) TIMing: TSTart: EDGe sets the trigger edge for starting the test Command syntax: TIMing:TSTart:EDGe <edge> Parameter: RISE | FALL Example: TIM:TST:EDG RISE Query syntax: TIM:TST:EDG? Back to: RISE | FALL (5) TIMing: TSTart: LEVel sets the trigger level for starting the test Command syntax: TIMing:TSTart:LEVel <NR2>...
- Page 46 TH8400 Series Operation Manual Command syntax: OCP:IEND <NR2> Parameters: 0-MAX | MINimum | MAXimum Example: OCP:IEND 3 Query syntax: OCP:IEND? Returns: <NR2> (3)OCP:STEP sets the incremental steps of OCP test Command syntax: OCP:STEP <NR1> Parameters: 1-1000 | MINimum | MAXimum...
- Page 47 TH8400 Series Operation Manual Command syntax: OVP:RESult:TIME? Example: OVP:RES:TIME? Returns: <NR2> 15.OPP Set the parameters in OPP test mode (1) OPP: PSTart sets the starting power of OPP test Command syntax: OPP:PSTart <NR2> Parameters: 0-MAX | MINimum | MAXimum Example: OPP:PST 3 Query syntax: OPP:PST? Returns: <NR2>...
- Page 48 TH8400 Series Operation Manual 16.LEFFect Set the parameters in load effect mode (1) LEFFect: IMIN sets the low level load current Command syntax: LEFFect:IMIN <NR2> Parameter: 0-I-Normal | MINimum | MAXimum Example: LEFF:IMIN 2 Query syntax: LEFF:IMIN? Returns: <NR2> (2) LEFFect: IMAX sets the high level load current Command syntax: LEFFect:IMAX <NR2>...
- Page 49 TH8400 Series Operation Manual Example: SWEEP:MODE AUTO Query syntax: SWEEP:MODE? Back to: AUTO | MANUL (2) SWEEP: IMIN sets Sweep minimum current Command syntax: SWEEP:IMIN <NR2> Parameters: 0-MAX | MINimum | MAXimum Example: SWEEP:IMIN 2 Query syntax: SWEEP:IMIN? Returns: <NR2>...
- Page 50 TH8400 Series Operation Manual Returns: <NR2> (9) SWEEP: FSTEP set Sweep step frequency Command syntax: SWEEP:FSTEP <NR2> Parameters: 0-MAX | MINimum | MAXimum Example: SWEEP:FSTEP 10 Query syntax: SWEEP:FSTEP? Returns: <NR2> (10) SWEEP: DWELL sets the duration of Sweep single point frequency Command syntax: SWEEP:DWELL <NR2>...
- Page 51 TH8400 Series Operation Manual Returns: CURR | VOLT | RES | POW (7) AUTO: LEVel sets the working value of the selected file and serial number Command syntax: AUTO:LEVel <NR2> Parameters: 0-MAX | MINimum | MAXimum Example: AUTO:LEVel 5 Query syntax: AUTO:LEVel? Returns: <NR2>...
- Page 52 TH8400 Series Operation Manual Command syntax: AUTO:UPPer <NR2> Parameters: 0-MAX | MINimum | MAXimum Example: AUTO:UPPer 3 Query syntax: AUTO:UPPer? Returns: <NR2> (15) AUTO: LOWer sets the lower limit of the selected file and serial number Command syntax: AUTO:LOWer <NR2>...
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Page 53: Chapter 7 Handler
TH8400 Series Operation Manual Chapter 7 Handler 7.1 Basic Information This instrument provides users with a powerful HANDLER interface, as shown in Figure 7-1. This interface can be used to receive external trigger signals, control signals, and output of instrument sorting results. -
Page 54: Trig
TH8400 Series Operation Manual 7.2.2 TRIG The interface can be used together for multiple functions. TRIG key on the front panel, and the low pulse signal is effective. For detailed functions, see chapter 3.2 Dynamic Mode (Dynamic). Time test: In this mode, the start condition or end condition is set as external trigger, and the rising or falling edge is set at the same time. -
Page 55: Chapter 8 Technical Specifications
TH8400 Series Operation Manual Chapter 8 Technical Specifications Model TH8401 TH8402A TH8402 175W 350W 350W Rated Value Power 0~15 Voltage 0~150V 0~15V 0~150V 0~15V 0~150V Current 0~3A 0~30A 0~3A 0~30A 0~6A 0~60A Minimum operating 1.5V@30A 1.2V@30A 1.5V@60A voltage Minimum ramp up time... - Page 56 TH8400 Series Operation Manual Model TH8411 TH8412 175W 350W Power 0~50V 0~500V 0~50V 0~500V Voltage 0~1.5A 0~15A 0~3A 0~30A Current Rated Value Minimum operating 1.8V@15A 3V@30A voltage Minimum ramp up time 20uS 0~50V 0~500V 0~50V 0~500V range mode 10mV 10mV resolution 0.05%+0.05%FS...
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Page 57: Chapter 9 Warranty
TH8400 Series Operation Manual Chapter 9 Warranty Warranty period: The user purchases the instrument from the company, calculated from the company's shipping date, the warranty period is 1 year. The warranty card shall be issued for the instrument. During the warranty period, if the instrument is damaged due to improper operation by the user, the maintenance cost shall be borne by the user. -
Page 58: Chapter 10 Appendix
TH8400 Series Operation Manual Chapter 10 Appendix Promote Message Chinese English Meaning 电流超限 Over Curr Trigger overcurrent protection 电压超限 Over Volt Trigger overvoltage protection 功率超限 Over Power Trigger overpower protection 极性反接 Volt Error The input voltage polarity is reversed 温度超限...
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