Technical data

Calibration Procedures 1
Constant Voltage (CV) Verifications
E3632A Service Guide 15
Load transient response time
This test measures the time for the output voltage to recover
to within 15 mV of nominal output voltage following a load
change from full load to half load, or half load to full load.
1 Turn off the power supply and connect the output to be
tested as shown in
Figure 1- 1 with an oscilloscope.
Operate the electronic load in constant current mode.
2 Turn on the power supply. Select the 30 V/4 A range,
enable the outputs, and set the display to the limit mode.
When the display is in the limit mode, program the
current to the full rated value 4.0 A and the voltage to
the full rated value (30.0 V).
3 Set the electronic load to transient operation mode
between one half of the output's full scale value and the
output's full rated value at a 1 kHz rate with 50% duty
cycle.
4 Set the the oscilloscope for AC coupling, internal sync,
and lock on either the positive or negative load transient.
5 Adjust the the oscilloscope to display transients as shown
in
Figure 1- 2. Note that the pulse width (t
2
–t
1
) of the
transients at 15 mV from the base line is no more than
50 msec for the output.
Figure 1-2 Transient response time