Download MC142 User Manual

POWERTEK
MC-142 Multifunction Calibrator
2, 20 V DC voltage ranges
The functional scheme is shown in the picture below:
There is a DC reference voltage source integrated within the 22bit measurement converter. Its output is fed to the
output stage for 2 and 20 V range. Output voltage present at Hi and Lo terminals is sensed by sensing wires.
Feedback eliminates the influence of amplifier’s output impedance and of the resistance of wires within the
calibrator.
200 V DC voltage range
The block diagram functional scheme is shown in the picture below.
The scheme is similar to 2 and 20 V ranges. A 240 V power amplifier with electronic fuses is connected to the
output of 20 V amplifier.
2 to 200 V AC voltage ranges
The functional scheme is shown in the picture below:
User Manual v41
71