Voltage Failure Indication; Current Monitoring; Digital I/O; Remote Measurement Connection - ITech IT8700 Series User Manual

3.6.1 Voltage failure indication

When the load is under OVP or reverse protection condition, pin 2 VF will
output low level signal.

3.6.2 Current monitoring

Current monitoring terminal will output 0-10V analog signal to accordingly on
behalf of 0 - full range of input current. You can connect an external voltmeter or
an oscilloscope to display the input current's changing.

3.6.3 Digital I/O

Digital I/O is the pin 3 and pin 4 shown in Chapter 3.4, only used in remote
control. Pin 4 digital output terminal can output TTL high/low level. It is a
universal output terminal and can be used in controlling an external instrument,
for example, the relay used in power testing. DI is used to detect the external
level state.

3.6.4 Remote measurement connection

Remote Sensing: SENSE (+) and SENSE (–) are the remote sensing inputs.
By eliminating the effect of the inevitable voltage drop in the load leads, remote
sensing provides greater accuracy by allowing the load to regulate directly at
the source's output terminals.
When load is at CV、CV or CR mode, lead length are relatively long or load
regulation is critical, or load consumes high-current, there will be voltage drop
Fig 3-9 terminals on single-channel module rear panel
1 GND
2 VF
3 DI
4 DO
I OUT
5 SENSE +
6 SENSE -
7 IN+
8 IN-
Copyright © Itech Electronic Co., Ltd.
Ground
Voltage fault indication terminal
Digital input terminal
Digital output terminal
Current monitoring output
Voltage remote
terminal(+)
Voltage remote
terminal(-)
External analog
terminal(+)
External analog
terminal(-)
Panel function introduction
measuring
measuring
controlling
controlling
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