Technical data

Calibration Procedures 1
Constant Current (CC) Verifications
E3632A Service Guide 17
CURR 0
4 Divide the voltage drop (DVM reading) across the current
monitoring resistor (R
M
) by its resistance to convert to
amps and record this value (I
O
). This value should be
within the limits of 0 A ±10 mA. Also, note that the CC,
Adrs, Limit, and Rmt annunciators are on.
5 Readback the output current over the remote interface by
sending the command:
MEAS:CURR?
6 Record the value displayed on the controller. This value
should be within the limit of I
O
±5 mA.
7 Program the output current to the full rated value (7.0 A)
by sending the commands:
CURR 7.0
8 Divide the voltage drop (DVM reading) across the current
monitoring resistor (R
M
) by its resistance to convert to
amps and record this value (I
O
). This value should be
within the limit of 7 A ±24 mA.
9 Readback the output current over the remote interface by
sending the command:
MEAS:CURR?
10 Record the value displayed on the controller. This value
should be within the limit I
O
±15.5 mA.
CC load regulation
This test measures the immediate change in output current
resulting from a change in the load from full- rated output
voltage to short circuit.
1 Turn off the power supply and connect the output to be
tested as shown in
Figure 1- 1 with the digital voltmeter
connected across the 0.01Ω current monitoring resistor
(R
M
).