Keysight U3606B, Руководство по обслуживанию, Страница: 51 / 123

Calibration Procedures 1
Keysight U3606B Service Guide 51
2 Connect the AC power line through an AC voltage source. Adjust the AC
voltage source to provide nominal input voltage to the instrument.
3 Turn on the instrument. Press [Voltage] to select the constant voltage mode.
Ensure that the appropriate range is selected.
4 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 the current to full scale. Enable the output.
5 Connect an additional electronic load across the front panel (red) and
(black) output terminals in parallel with a digital multimeter.
6 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.
7 Adjust the AC voltage source to the low line voltage limit. Record the output
voltage reading on the digital multimeter.
8 Within a few seconds after step 7 , adjust the AC voltage source to the high line
voltage limit. Record the output voltage reading on the digital multimeter.
9 Compare the difference between the measurement results and the appropriate
test limits shown in Table 1-14 .
10 Repeat step 3 to step 9 for the S2 (8 V/3 A) and S2m (1000 mV/3 A) ranges.
Table 1-14 Constant voltage source effect (line regulation)
verification test
Input AC line
Low line
voltage limit
High line
voltage limit
Range (parameter) Error from nominal 1-year
100 V
ac
90 V
ac
110 V
ac
S1 (30 V) ±0.003 V
S2 (8 V) ±0.003 V
S2m (1000 mV) ±0.0003 V
115 V
ac
104 V
ac
127 V
ac
S1 (30 V) ±0.003 V
S2 (8 V) ±0.003 V
S2m (1000 mV) ±0.0003 V