Keysight E3630A, Руководство по эксплуатации и обслуживанию

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5 Service Information
50 Keysight E3630A Operating and Service Manual
Voltmeter accuracy (+6 V)
1 With no loads connected: turn on the supply, connect a digital voltmeter
between the +6 V terminal and common (COM), and set the +6 V VOLTAGE
control so that the DVM indication is as near as possible to 5 volts.
2 Push the +6 V METER switch on and check the front panel voltmeter
indication. It should be within ±(0.5% +2 counts) of the DVM indication (4.96 V
to 5.04 V).
Voltmeter accuracy (±20 V)
1 With no loads connected: turn on the supply, connect a digital voltmeter
between the +20 V terminal and common (COM), and set the ±20 V VOLTAGE
control so that the DVM indication is as near as possible to 17 volts.
2 Push the +20V METER switch on and check the front panel voltmeter
indication. It should be within ±(0.5% +2 counts) of the DVM indication
(16.90 V to 17.10 V).
3 Set the TRACKING RATIO control to the FIXED position, and check the
+20 V and –20 V ranges of the front panel voltmeter similarly by connecting
the DVM to each of these outputs in turn, setting the ±20 V VOLTAGE control
for a 20 volts DVM indication, and verifying that the panel meter is accurate
within ±(0.5%+ 2 counts) (19.7 V to 20.3 V).
Tracking
4 Connect the DVM to the +20 V output, set the ±20 V VOLTAGE control for a
DVM indication of 20 volts, and reconnect the DVM to the –20 V output
without disturbing the voltage control. The voltage at the –20 V output should
be within 1% of the +20 V output (19.8 V to 20.2 V).
Variable tracking ratio
5 Leave the ±20 V VOLTAGE control set as in step (4), and use a DVM to monitor
the voltage of the –20 V supply while adjusting the TRACKING RATIO control
over its VARIABLE range. The –20 V supply should be capable of being
adjusted from less than 0.5 volts to between 19 to 21 volts. Return the
TRACKING RATIO control to the FIXED position.
NOTE
Leave the TRACKING RATIO control in the FIXED position throughout the rest of
the performance test.