GW Instek PSW 30-108 - External Voltage Control

PSW Series User Manual
122
A COM
16
Analog signal common. Connected to the sense-
terminal when remote sense is used. Connected to
the negative output terminal when remote sense is
not used.
STATUS COM
17
Common for status signals 18, 19, 20, 21 and 22.
CV STATUS
18
Turns on when CV mode is active. (photo coupled
open collector output)
CC STATUS
19
Turns on when CC mode is active. (photo coupled
open collector output)
ALM STATUS
20
Turns on when any of the protection modes are
tripped (OVP, OCP) or if a shutdown signal is
input. (photo coupled open collector output)
OUTPUT ON
STATUS
21
Turns on when the output has been turned on.
(photo coupled open collector output)
POWER OFF
STATUS
22
Turns on when the power switch is turned off.
N.C.
23
Not connected
OUT ON/OFF
CONT
24
Turns the output on/off when (default setting) a
low TTL signal is applied. Internally, the circuit is
pulled up to +5V with 10kΩ resistance.
SER SLV IN
25
Series slave input during master-slave series
operation. (30V/80V/160V models only)
N.C.
26
Not connected
External Voltage Control of Voltage Output
Background
External voltage control of the voltage output is
accomplished using the MIL-26 connector on
the rear panel. A voltage of 0~10V is used to
control the full scale voltage of the instrument,
where:
Output voltage = full scale voltage × (external
voltage/10)
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