User Manual

2400 Series SourceMeter
®
User’s Manual Digital I/O Port, Output Enable, & Output Configuration 13-9
Figure 13-5
Output configuration menu tree
Output-off states
NOTE For the Model 2430 Pulse Mode, output-off is always set to NORMAL.
HIGH IMPEDANCE
With this output-off state, the output relay opens when the OUTPUT is turned
OFF. This disconnects external circuitry from the input/output of the SourceMeter.
To prevent excessive wear on the output relay, do not use this output off state for
tests that turn the output off and on frequently (such as the Output Auto-Off
mode). Note that there is a ~ 15msec settling time for the relay when the output is
turned on.
NORMAL
When in this relatively high-impedance output-off state, the V-Source is selected
and set to 0V. Current compliance is set to 0.5% full scale of the present current
range. In theory, with the V-Source set to zero, the SourceMeter will not source or
sink power. In practice, the source value may not be exactly at zero. Therefore,
the SourceMeter may source or sink a very small amount of power. In most cases,
this source or sink power level is not significant.
ZERO
When in this output-off state, the ZER message is displayed (instead of OFF), and
the SourceMeter is configured as follows:
When the V-Source is the selected source:
CONFIG
ON/OFF
OUTPUT
OFF STATE
ENABLE
ENABLEDISABLE NORMAL
HIGH
IMPEDANCE
GUARDZERO
AUTO OFF
ENABLE
DISABLE