Keysight U3606B - Page 50

1 Calibration Procedures
50 Keysight U3606B Service Guide
3 Set the output voltage to the full rated value (30 V for S1 range, 8 V for S2
range, or 1 V for S2m range) and current to full scale. Ensure that the
appropriate range is selected.
4 Connect an additional electronic load across the front panel (red) and
(black) output terminals in parallel with a digital multimeter.
5 Operate the electronic load in constant current (CC) mode, and set its current
(1 A for S1, 3 A for S2, or 3 A for S2m).
Ensure that the U3606B is operating within the specified limit and protection
values. If not, adjust the electronic load by increasing the resistance so that the
current drops slightly until the U3606B is operating in the constant voltage
mode.
6 Output the full rated value in the order shown below. Record the output
voltage reading on the digital multimeter.
7 Within a few seconds after step 6, operate the electronic load in open mode.
Record the output voltage reading on the digital multimeter.
8 Compare the difference between the measurement results to the appropriate
test limits in Table 1-13.
9 Repeat step 3 to step 8 for the S2 (8 V/3 A) and the S2m (1000 mV/3 A)
ranges.
CV source effect (line regulation)
This test measures the change in output voltage that results from a change in AC
line voltage from the minimum value to the maximum value.
1 Turn off the instrument and connect a digital multimeter between the front
panel (red) and (black) output terminals (see Figure 1-11, “Test setup
for constant voltage load and line regulation verification,” on page 34).
Table 1-13 Constant voltage load effect (load regulation) verification test
Output voltage Range (parameter) Error from nominal 1-year
30 V S1 (30 V) ±0.009 V
8 V S2 (8 V) ±0.021 V
1 V S2m (1000 mV) ±0.0183 V