Operations introduction 
  Copyright © Itech Electronic Co., Ltd.  36 
Chapter4 Operations introduction   
This chapter will mainly introduce IT8700’s menu operation function.   
4.1 Local/remote operation 
The front panel has keyboard controls for setting voltage, current, resistance 
and power. Local operation means control the electronic load via the keys on 
the front panel and the menu operation. Remote operation means control the 
electronic load through computer via the  RS232, USB or Ethernet  interface. 
You can press  +   key to switch into local control.   
4.2 PC control connection   
IT8700  series  electronic  load  can  achieve  remote  control  via  RS232  /USB 
/ETHERNET,  but  only  one  interface  can  be  used  at  one  time.  choose  the 
interface via the system key(SYSTEM). Connect Communication cable before 
power on. Do not support hot plug, as it may damage communication interface 
of electronic load. The following picture shows how to connect RS232 cable 
between electronic load and PC and show the specific configuration. 
Procedure: 
1.  Connect RS232 cable. 
2.  Power on the electronic load 
3.  Select channel number via  key, such as channel1 
4.  Enter  system  menu  via + key,  use  to  choose 
<communication>,  press key  to  enter,  use  key  to  choose 
RS232, press  key to confirm. 
RS232 
USB TMC-USB488 
GPIB 
ETHERNET 
5.  Now  Display  return  to  main  menu,  use  key  to  choose  <RS232> 
menu,  press  key  to  enter.  First  set  <Baudrate  Set>,  use + 
key to choose and enter;use  key to choose<Parity Set>,use
+ key  to  choose  <none>  and  confirm; Use key  to 
choose<Handshake  Set>,  use + key  to  choose<None>  and 
confirm. 
Baudrate Set 
Parity Set 
Handshake Set 
Exit 
Note:    means to press this key to choose. 
4.3 Operating modes 
The electronic load can work in the following 4 modes: 
Constant current operation mode (CC)