Keithley 2303, User Manual

Page: 34 / 152

2-6 Basic Power Supply Operation
NOTE When the current limit relay control mode is selected, the relay may chatter or not
have sufficient time to pull in if the current value is fluctuating around the set cur-
rent limit, depending on how rapidly the current is fluctuating around the current
limit point.
Figure 2-3
Relay control mode - limit relay
Figure 2-4
Relay control mode - trip relay
Current
Relay
On
Off
Limit Setting
Current
Relay
On
Off
Limit Setting
Output turns off
due to Trip Mode
User turns output on, and
trip condition is corrected.
Otherwise, output will trip again.