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Appendix Service Information
Measurement Techniques
167
Service
Information
Measurement Techniques
Setup for Most Tests
Most tests are performed at the front terminals as shown in Figure A-1. Measure
the dc voltage directly at the (+) and (-) terminals on the front panel.
Figure A-1 Performance Verification Test Setup
Current-Monitoring Resistor
To eliminate output current measurement error caused by the voltage drops
in the leads and connections, connect the current monitoring resistor between
the (-) output terminal and the load as a four-terminal device. Connect the
current-monitoring leads inside the load-lead connections directly at the
monitoring points on the resistor element (see R
M
in Figure A-1).
DVM,
Scope, or
RMS