Panel function introduction 
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Voltage failure indication 
When  the  load  is  under  OVP  or  reverse  protection  condition,  pin  2  VF  will 
output low level signal. 
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. 
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. 
External analogue control 
You can control the voltage and current setting of the electronic load by the 
analogue terminals: pin 7 and pin 8. 0-10V adjustable analogue simulate the 
0-fullscale to regulate the input voltage and current of the electronic load(10V 
indicate the full range of load voltage or current value)