PSM-SERIES PROGRAMMABLE POWER SUPPLY
USER MANUAL
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(1)
Make sure the power cord is unplugged.
(2)
Change the AC selects switch to the desired line voltage position.
A change in line voltage may also require a corresponding change of
fuse value. Install the correct fuse value as listed on rear panel.
6-3. Measurement Techniques
For an accurate and convenient measurement, please set up the instrument
according to the following:
1)
Setup:
Figure 6-1
2)
The calibrated devices:
For general calibration, user can select the suitable calibration devices
by their own. Please refer to the below recommendation:
A. Electronic Load
In order to meet the demand of the auto calibration, the Electronic
Load with GPIB is well recommended. The main function of the
Electronic Load is to control the short test (CC current calibration),
the connection test (voltage load regulation, transient response
time) and open test( CV voltage calibration).
Measurement Techniques
Assure a precise Load regulation, Voltage peak to peak, and
transient response time, the test joint point must be configured to
sampling terminals of S+ and S-.
B. Current Monitoring Resistor
PSM-SERIES PROGRAMMABLE POWER SUPPLY
USER MANUAL
45
The resistor must have sufficient Watt value that can meet the
calibration need to control the change amount less than 15mA
when a 20.00A current run over it for a long period.
C. DVM or RMS Voltmeter
The meter used for the output voltage measurement should have
0.1mV resolution (accuracy: 0.01%). For the output current
measurement, the meter should have 0.001mV resolution(accuracy:
0.01%) to measure the voltage of the shunt, then transfer it to the
corresponding current value.
D. Oscilloscope
To test the voltage noise and output oscillator when the power supply
is in the CV and CC mode.
E. Person Computer (PC)
This is a supplementary tool for the auto calibration including interface
card and auto calibration software of its own.
