Keysight N6705 Service Manual page 14

2 Performance Verification
14
CV Load Effect
Test category = performance
This test measures the change in output voltage resulting from a change
in output current from full load to no load.
1
Turn off the DC Power Analyzer and connect a DMM and an
electronic load (see Test Setup A).
2
Turn on the DC Power Analyzer and program the instrument settings
as described in the test record form under "CV Load Effect".
3
Set the electronic load for the output channel's current as described
in the test record form under "CV Load Effect". The output status
should be "CV". If it isn't, adjust the load so that the output current
drops slightly.
4
Record the output voltage reading from the DMM.
5
Open the load. Record the voltage reading from the DMM again. The
difference between the DMM readings in steps 4 and 5 is the load
effect, which should not exceed the value listed in the test record
form for the appropriate model under "CV Load Effect".
6
For models N6781A, N6782A, and N6784A only. Repeat steps 2
through 5 for the 6 V range.
CV Source Effect (all models except N678xA SMU)
Test category = performance
This test measures the change in output voltage that results from a
change in AC line voltage from the minimum to maximum value within
the line voltage specifications.
1
Turn off the DC Power Analyzer and connect the ac power line
through a variable voltage transformer or an AC source.
2
Connect a DMM and an electronic load (see Test Setup A). Set the
transformer or AC source to nominal line voltage.
3
Turn on the DC Power Analyzer and program the instrument settings
as described in the test record form under "CV Source Effect".
4
Set the electronic load for the output channel's current as described
in the test record form under "CV Source Effect". The output status
should be "CV". If it isn't, adjust the load so that the output current
drops slightly.
5
Adjust the AC input to the lowest rated line voltage (86 VAC).
6
Record the output voltage reading from the DMM.
7
Adjust the AC input to the highest rated line voltage (264 VAC).
8
Record the output voltage reading on the DMM. The difference
between the DMM reading in steps 6 and 8 is the source effect,
which should not exceed the value listed in the test record form for
the appropriate model under "CV Source Effect".
Model N6705 Service Guide