GW Instek PSU 40-38 - Page 148

PSU Series User Manual
148
Connection
When connecting the external voltage source to the
isolated voltage option, use shielded or twisted
paired wiring.
PSUEXT-V
Isolated
Voltage
Option
＋
－
4
3
Output
Terminal
2 core shielded
wire or twisted
pair
1or8
 Pin4(GND_ISO) → EXT-V (-)
 Pin3(+IPROG_ISO) → EXT-V (+)
 Pin 1 or 8 (Shield) → Wire shield
Connection- alt.
shielding
If the wire shield needs to be grounded at the
voltage source (EXT-V), then it can be connected as
shown below.
PSUEXT-V
Isolated
Voltage
Option
＋
－
4
3
Output
Terminal
2 core shielded
wire or twisted
pair
 Pin4(GND_ISO) → EXT-V (-)
 Pin3(+IPROG_ISO) → EXT-V (+)
 Wire shield → EXT-V ground (GND)
Steps
1. Connect the external voltage according to the
connection diagrams above.