Newtons4th PSM3750 NumetriQ, Startup Manual, Page: 73 / 104

PSM3750 Quick User Guide
Page 71
8.5 POWER – Power meter
The power meter measures the total power and fundamental power of the signal
present at the input terminals to the bandwidth of the instrument (>1MHz).
Above 5MHz only the fundamentals are measured.
One of the inputs on the PSM3750 must be configured as an external shunt
input. The external shunt may be a simple resistor or dedicated high frequency
precision shunts which are available as accessories from N4L. Current
Transformers and clamps may be used if fitted with a suitable burden resistor.
The power meter will operate either from its own generator or more normally will
use the frequency measured on CH1 (usually voltage).
The power meter measures the elementary values:
1. W
2. V rms
3. A rms
4. V fundamental (in-phase and quadrature)
5. A fundamental (in-phase and quadrature)
6. V dc
7. A dc
8. V harmonic (in-phase and quadrature)
9. A harmonic (in-phase and quadrature)
10. Frequency
and derives the following values:
1. V&A fundamental magnitude
2. VA (true and fundamental)
3. Power Factor (true and fundamental)
4. Fundamental W
5. Harmonic W
6. Phase Shift