Operations introduction 
  Copyright © Itech Electronic Co., Ltd.  49 
When in remote control mode(USB / RS232 / Ether-net), you can send SCPI 
command INPut:SHORt ON to enable the short operation. 
4.8 Input on/off operation 
In front panel operation conditions, press key  to switch to on/off state. 
Input on/off operation won’t affect the present settings. The load/unload speed 
of On/off operation is not dependent on the rise/fall slew rate. 
When in the remote control mode(USB / RS232 / Ether-net), you can send 
SCPI command INPut ON to open input. 
4.9 Synchronous load 
To  any  channels,  press  +   key  to  enter  configuration  menu,  set 
SYNC ON SET to be ON. When turn on this function,    key can control 
the input state of the correspondent module synchronously. 
When in remote control mode(USB / RS232 / Ether-net), you can send SCPI 
command INPut:ALL ON to synchronously load all channels. 
4.10 Von operation 
When testing some power supply products with a  slower voltage rise, if the 
input of the electronic load is turned on first, and then the power is turned on, 
the power supply may enter the protected state. Therefore, the user can set the 
VON value, and when the power supply voltage is higher than this value, the 
electronic load starts to load. 
 
Please confirm whether you need to set the VON voltage. The VON voltage is 
set to facilitate the user to limit the working voltage, and if you do not need to 
set the VON voltage, do not set this value, otherwise it may result in unloading. 
 
IT8700 series electronic loads offer Von loading voltage and Von loading mode.   
⚫  When disable Von LATCH, voltage rise and is higher than the Von loading 
voltage,  input  of  electronic  load  is  turned  on.  When  the  power  supply’s 
voltage fall and is lower than Von unload value, input is turned off.