Service and Maintenance 8
Constant Voltage (CV) Verifications
E364xA User’s and Service Guide 197
2 Turn on the power supply. Select the output to be tested
and the high voltage range (20 V/1.5 A) and then enable
the output by sending the following commands:
INST:SEL {OUT1|OUT2}
VOLT:RANG P20V (E3646A model)
OUTP ON
3 Program the output voltage to 0 V and current to the
full- scale rated value (1.5 A)
[1]
by sending the following
commands:
VOLT 0
CURR 1.5 (E3646A model)
4 Record the output voltage reading on the digital voltmeter
(DVM). The reading should be within the limit of 0 V
±10 mV for output1 or 0 V ±25 mV for output2. Also, note
that the CV, Adrs, Limit, 20V, OVP1, OVP2, OUT2, and Rmt
annunciators are turned on.
5 Read back the output voltage over the remote interface by
sending the MEAS:VOLT? command:
6 Record the value displayed on the controller. This value
should be within the limit of (DVM ±5 mV) for output1 or
(DVM ±25 mV) for output2.
7 Program the output voltage to the full- scale rated value
(20 V)
[1]
by sending the following command:
VOLT 20.0 (E3646A model)
8 Record the output voltage reading on the digital voltmeter
(DVM). The reading should be within the limit of
(20 V ±20 mV) or (60 V ±40 mV) for output1, or
(20 V ±45 mV)
[2]
or (60 V ±85 mV)
[3]
for output2.
9 Read back the output voltage over the remote interface by
sending the MEAS:VOLT? command.
[1] For the E3646A model. For other models, refer to Tabl e 8 -5 .
[2] For the E3646A/E3648A model.
[3] For the E3647A/E3649A model.
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