Keysight E3630A, Руководство по эксплуатации и обслуживанию

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Service Information 5
Keysight E3630A Operating and Service Manual 47
Performance Tests
The following paragraphs provide test procedures for verifying the power supply's
compliance with the specifications of Table 1-1 . Proceed to the troubleshooting
procedures if you observe any out of specification performance.
General Measurement Techniques
Connecting measuring devices
To achieve valid results when measuring load regulation, ripple and noise, and
transient response time of the supply, measuring devices must be connected as
close to the output terminals as possible. A measurement made across the load
includes the impedance of the leads to the load. The impedance of the load leads
can easily be several orders of the magnitude greater than the supply impedance
and thus invalidate the measurement. To avoid mutual coupling effects, each
measuring device must be connected directly to the output terminals by separate
pairs of leads.
When performance measurements are made at the front terminals (
Figure 5-2 )
the load should be plugged into the front of the terminals at (B) while the
monitoring device is connected to a small lead or bus wire inserted through the
hole in the neck of the binding post at (A). Connecting the measuring device at (B)
would result in a measurement that includes the resistance of the leads between
the output terminals and the point of connection.
CAUTION
Before applying power to the supply, make certain that its line voltage
selector switch (S2) is set for the line voltage to be used. (See CAUTION
notice in page 47 operating section for additional information on S2)