5322A
Calibration Manual
6
Figure 5. AC/DC Voltage Calibrator Principle
AC/DC Multimeter (MER Board)
The on-board ac/dc multimeter simultaneously measures any external voltage in range to
5000 Vrms and current to 30 Arms. Both voltage and current channels have a range amplifier
and selectable ac/dc converter. A two-input 16-digit AD converter measures the output signal.
See
Figure 6. AC/DC Multimeter Principle
Generator
30V amplifier
AMP board
D/A Converter
Crystal
Oscillator
Differential
Amplifier
AC
H
i
DC
L
o
Feedback
Circuit
AC/DC
converter
CPU
Range amplifier
AC/DC
Voltage channel
V
A
COM
AC/DC
converter
A/D Converter
Range amplifier
Current channel
Содержание 5322A
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