Constant Voltage Tests - Keysight Technologies N6705C Operating And Service Manual

Constant Voltage Tests

Voltage Programming and Readback Accuracy
Test category = performance, calibration
This test verifies that the voltage programming and measurement functions are within specifications.
Step 1. Turn off the power analyzer and connect a DMM across the sense terminals (see
A). Do not connect the load.
Step 2. Turn on the power analyzer and program the instrument settings as described in the test
record form under "Voltage Programming & Readback, Min Voltage". Turn the output on. The output
status should be "CV" and the output current should be close to zero.
Step 3. Record the output voltage reading from the DMM and the voltage measured over the
interface. The readings should be within the limits specified in the test record form for the appropriate
model under "Voltage Programming & Readback, Minimum Voltage".
Step 4. Program the instrument settings as described in the test record form under "Voltage
Programming & Readback, High Voltage".
Step 5. Record the output voltage reading from the DMM and the voltage measured over the
interface. The readings should be within the limits specified in the test record form for the appropriate
model under "Voltage Programming & Readback, High Voltage".
Step 6. For models N6761A, N6762A, N6781A, N6782A, and N6784A only. Set both the voltage
programming and the voltage measurement to the low range (5.5 V for models N676xA; 6 V
programming and 1 V measurement for models N678xA). Set the instrument as described under
"Voltage Programming & Readback, Low Voltage". Repeat step 5 for the low voltage range. The
readings should be within the limits specified under "Voltage Programming & Readback Low Voltage".
Step 7. For models N6781A, N6782A, and N6784A only. Set the voltage programming to the 600 mV
range and the voltage measurement to the 100 mV range. Set the instrument as described under "600
mV Programming & 100 mV Readback". Repeat step 5. The readings should be within the limits
specified under "600 mV Programming & 100 mV Readback".
Step 8. For models N6763A – N6766A only. Set the instrument as described under "Voltage
Readback, Low Voltage". Record the voltage measured over the interface. The reading should be
within the limits specified under "Voltage Readback Low Range".
Constant Voltage Load Effect
Test category = performance
This test measures the change in output voltage resulting from a large change in output current from
full load to no load.
Step 1. Turn off the power analyzer and connect a DMM and an electronic load (see
Keysight N6705C Operating and Service Guide
8 Verification and Calibration
Test Setup
Test Setup A).
377