GW Instek PEL-3000 Series User Manual - Manual (Page 141)

EXTERNAL CONTROL
139
Connection When connecting the external resistance source
to the J1 connector, use a ferrite core and use
twisted pair wiring.
PEL-3000 EXT-R
J1
connector
3
1
Input
Terminals
Ferrite Core and
twisted wiring
 Pin1 → EXT-R
 Pin3 → EXT-R
Note
Use resistors with minimum residual resistance of
50Ω or less.
Note for proportional control: Do not use swtiches
that switch between fixed resistances. Please use
continuously variable resistors.