AIPD SUBCOURSE NUMBER MM0474, POWER MEASUREMENTS
EXERCISES FOR LESSON 2
What output operates the meter circuit of the 431C Power Meter?
DC output of the synchronous amplifier
10 kHz ground signal at the RF input
What position should the MOUNT RES switch on the front panel of power
meter 431C be in, when using the model 8478B thermistor mount?
200 ohm Bal
What should be done to avoid severe damage to the thermistor mount while
operating the RANGE switch?
Zero adjust should not be moved
Null adjust should not be moved
Mount res switch should not be moved
The degree of inability of the instrument to measure the true substitution
audio bias or DC power supplied to the thermistor mount is called
thermoelectric effect error.
When both the RF source and the thermistor mount have the same impedance
maximum transfer power.
minimum transfer power.
The amount of mismatch loss in any measurement depends on the