Verification
120
Series N6700 User’s Guide
Constant Voltage Tests
NOTE
Test each output channel individually. Refer to the appropriate test record form
for the instrument settings of the model you are checking.
Voltage Programming and Readback Accuracy
Test category = performance, calibration
This test verifies that the voltage programming and measurement
functions are within specifications.
1
Turn off the power system and connect a DVM directly across the
sense terminals as shown in Test Setup figure (A). Do not
connect a load.
2
Turn on the power system and program the instrument settings
as described in the test record form under “Voltage Programming
& Readback, Min Voltage” with the load off. The CV annunciator
should be on and the output current should be close to zero.
3
Record the output voltage readings on the digital voltmeter
(DVM) and the front panel display. The readings should be within
the limits specified in the test record form for the appropriate
model under “Voltage Programming & Readback, Min Voltage”.
4
Program the instrument settings as described in the test record
form under “Voltage Programming & Readback, High Voltage”.
5
Record the output voltage readings on the DVM and the front
panel display. The readings should be within the limits specified
in the test record form for the appropriate model under “Voltage
Programming and Readback, High Voltage”.
6
For Agilent Models N6761A and N6762A only.
Repeat steps 4 - 5
for the low voltage range. Program the instrument settings as
described in the test record form under “Voltage Programming &
Readback, Low Voltage”. The readings should be within the limits
specified in the test record form for the appropriate model under
“Voltage Programming and Readback, Low Voltage”.
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 power system and connect a DVM and an electronic
load as shown in Test Setup figure (A).
2
Turn on the power system 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 CV
annunciator on the front panel must be on. If it isn’t, adjust the
load so that the output current drops slightly.
4
Record the output voltage reading from the DVM.