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Summary of Contents for Tonghui Electronics TH1778A
- Page 1 TH1778A DC Bias Current Source Operation Mannual Tonghui Electronic Co.,Ltd. www.tonghui.com.cn - 1 -...
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Page 2: Table Of Contents
Content Chapter 1 Genernal Information ................... 4 1.1 Introduction ..............................4 1.2 Specifications ............................... 4 1.2.1 Current Accuracy ..........................4 1.2.2 Display .............................. 4 1.2.3 Control .............................. 4 1.2.4 Frequency response........................... 4 1.2.5 Driver ..............................4 1.2.6 Interface ............................5 1.3 Main Functions ............................ - Page 3 3.4.2 Stop Current Output ........................18 3.4.3 Single and Steps Output ........................18 Chapter 4 Command ....................19 4.1 TH1778A RS232 Instruction ........................19 4.2 SCPI Command ............................19 4.2.1 General command set........................19 4.2.2 Parameter Sub-System Command ....................20 4.2.3 State Sub-System Command ......................
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Page 4: Chapter 1 Genernal Information
TH1778A DC Bias Current Source adopts high-performance MPU and can provide a constant current range from 0A to 20A. The maximum current output can reach 0-120A by connecting the slave. TH1778A can be used with most of Tonghui’s L meters and LCR meters. It is suitable for the AC/DC superposition test of magnetic inductors and provides the convenient and practical magnetization current source for the characteristic analysis of magnetic materials. -
Page 5: Interface
TH1778A is equipped with SlaverLink interface, RS232C interface and USB Device interface. TH1778A can be connected directly with the Company's L-Meter or LCR Bridge and can be controlled by some L-Meter or LCR Bridge. It can be controlled by all upper computers with serial port (the control instruction set must follow the SCPI instruction set provided by this manual). -
Page 6: Precautions For Usage
Humidity: Normal Working: <90%RH Reference Working: <80%RH Transport Environment: ≤93RH 1.4.5 Precautions for Usage Please do not use the tester in dusty, vibrative, direct sunlight and corrosive gases and other adverse environments. When the instrument is not used for a long time, please put it in the original box or similar box and stored in a ventilated room with temperature of 5℃~40℃... -
Page 7: Chapter 2 Installation
Chapter 2 Installation Accessories 2.1.1 Current Output Clip The standard test clip and output line is ET-07-2 and ET-54. (Note: when the current is greater than 40A, please do not use it as the current output.) 2.1.2 Footswitch The standard footswitch is TH1801-001. 2.1.3 Link Line Each TH1778S slave is equiped with a SlaverLink. -
Page 8: Front Panel Description
Front Panel Description Power Switch Press down to power on, push out to power off. Start Button To start output Stop Button To stop output DC Bias LED... - Page 9 When the instrument starts to output, the output indicator lights up. Number Keys Used to input numbers Output Port Current is output from this port. LED Screen Used to display operation interface Brand and Model The brand and model of the instrument Menu Button For menu manipulation 10) USB Interface...
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Page 10: Chapter 3 Basic Operation
Chapter 3 Basic Operation Instruction of main interface 3.1.1 Current Display The total output current can be set on the setting interface or on the main interface. Using the numeric keypad, you can set the current value. The default unit is A. The seting range of current value is listed below: Slaver Amount Set Lower Limit (A) -
Page 11: Current Climbing Progress Bar
3.1.2 Current Climbing Progress Bar When the instrument starts to output current, there is a climbing process. The higher the current is, the slower the climbing will be. Therefore, in order to visually display the current climbing process, there is a current climbing progress bar. -
Page 12: Parameter Setting
As shown in the figure above, the setting interface includes parameter setting and list setting. 3.2.1 Parameter Setting 3.2.1.1 Current Output Make use of the numeric keyboard to set the total current output value, the default unit is A. The current setting range is listed below: Slaver Amount Set Lower Limit (A) Set Upper Limit (A) -
Page 13: List Setting
3.2.2 List Setting 3.2.2.1 Current Begin Make use of the numeric keyboard to set the current begin value, the default unit is A, the setting range is 0~120A. 3.2.2.2 Current End Make use of the numeric keyboard to set the current end value, the default unit is A, the setting range is 0~120A. 3.2.2.3 Current Step Make use of the numeric keyboard to set the current step value, the default unit is A, the setting range is 0~120A. -
Page 14: System And Tool Settings
According to the three parameters of current begin, current end and scan point to generate the list automatically. If current begin is I , current end is I , scan point is n, then the current step can be represented as I ……, I /(n-1). - Page 15 3.3.1.2 Foot Mode There are two foot modes which are listed below: Trig Mode: Step one time to start outputting, step one time again to stop outputing. Hold Mode: Step and hold on the switch to start outputting, loosen the switch to stop outputting. 3.3.1.3 Beep Volume To set the speaker to ON/OFF.
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Page 16: System Tool
3.3.2 System Tool 3.3.2.1 Software Update Copy the upgrade program file (TH1778A.sec) to the USB root directory Insert the USB disk to the USB interface on the front panel Select Update to upgrade the software, and there will be a progress bar to indicate the progress ... - Page 17 3.3.2.4 Serial Number Serial Number of the instrument is provided. 3.3.2.5 Password Users are able to set a new password, or change the password. 3.3.2.6 Slave Information You can use this feature to view the slave index and its software version.
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Page 18: Instruction Of Instrument Output
Instruction of Instrument Output 3.4.1 Current Output There are three methods to start outputing current which are listed below: 3.4.1.1 Start Button Press the start button to start outputting current. 3.4.1.2 Foot Switch In Trig mode, step and release the foot switch, the instrument starts to outputting current. In Hold mode, step and hold the foot switch to output current. -
Page 19: Chapter 4 Command
LF. It’s ASC code is 10 in decimal or 0A in hexadecimal. When there is data return, each data is terminated with LF. 4.2.1 General command set *IDN? Function: Check the model, and edition. Command Format: *IDN? Command Example: Input Command: *IDN? Returned Info: TH1778A, Ver 1.00 *STA Function: Turn on the instrument and output current... -
Page 20: Parameter Sub-System Command
Command Format: *STA Command Example: Input Command: *STA Instrument starts to output current *STO Function: Stop outputting current Command Format: *STO Command Example: Input Command: *STO If the instrument is outputting current, then stop outputting current 4.2.2 Parameter Sub-System Command The parameter sub-system command is used to remotely set parameters. -
Page 21: State Sub-System Command
Set Format: :PARA:FOOT <data> Query Format: :PARA:FOOT? Data: Data Type: Enumeration, 1 byte Data Range：TRIG, HOLD Data Accuracy: - Data Unit: - Set Example: To set the foot switch to rising edge trigger, enter the command: :PARA:FOOT TRIG Query Example: If you enter the command: :PARA:FOOT?, the returned content is: TRIG, indicating the current foot switch is rising edge triger. -
Page 22: System Sub-System Command
Bit3: Overload or not Bit4: Unbalanced or not Query Example: If you enter the command: :STAT:SLAV?, the returned content is: 1 has the following meaning: Bit0: 1 The slave has been turned on Bit1: 0 Not running Bit2: 0 Not overheat Bit3: 0 Not overload Bit4: 0 Not unbalanced :STAT:WORK... - Page 23 Query Format: :SYST:BEEP? Data: Data Type: Enumeration, 1 byte Data Range：ON, OFF Data Accuracy: - Data Unit: - Set Example: To set the beep to ON, enter the command: :SYST:BEEP ON Query Example: If you enter the command: :SYST:BEEP?, the returned content is: ON, indicating the beep is on.
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Page 24: Working Sub-System Command
Data Type: Enumeration, 1 byte Data Range：EDGD, EDGU, HOLD, LOCK, VOLT Data Accuracy: - Data Unit: - Set Example: To set the foot switch to rising edge trigger, enter the command: :SYST:FOOT EDGU Query Example: If you enter the command: :SYST:FOOT?, the returned content is: EDGU, indicating the current foot switch is rising edge trigger.
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