B&K Precision MDL Series - Manual - Manual (Page 64)

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Table 3 - Module Terminal Pinout
Pin Signal Description
1 GND Ground
2 VF Voltage fault indication terminal
3 DI Digital input terminal
4 DO Digital output terminal
⃝ I OUT Current monitoring output
5 SENSE + Voltage remote measuring terminal (+)
6 SENSE - Voltage remote measuring terminal (-)
7 EXT_PRG+ External analog controlling terminal (+)
8 EXT_PRG- External analog controlling terminal (-)
Voltage Failure Indication
When the electronic load is under OVP or reverse protection condition, pin 2 (VF) will output a high
level signal.
Current Monitoring
The current monitoring terminal will output 0-10 V analog signal accordingly to 0 - full range of the
input current. You can connect an external voltmeter or an oscilloscope to display the input
current’s change.
Digital I/O
Digital I/O is pin 3 and pin 4 shown in Figure 31 and only used in remote control. The digital input
terminal (pin 3) can detect a high/low level signal. The digital output terminal (pin 4) can output a
TTL high/low level signal. It is a universal output terminal and can be used to control an external
instrument.