Figure 1-3. 0- to 500-millivolt power supply schematic diagram.

TM 11-6625-1702-35

Figure 1-3. 0- to 500-millivolt power supply

schematic diagram.

ing of pins 1 and 2 of RF directional power

1-11. Meter Circuit

sensor Z1. In S3 switch position 4, the metering

c i r c u i t is turned off. In S3 switch positions

The meter circuit of the test set is controlled

5 and 6, forward and reflected power measure-

by METER FUNCTION switch S3. Switch

ments of as high as a 35-watt RF power source

wafers S3A and S3B control the meter circuit.

are taken using outputs and loading of pins

In S3 switch position 1, the 28-volt source is

4 and 5 of RF directional power sensor Z1.

measured with load resistor R2. In S3 switch

In S3 switch positions 7 and 8, the 0- to 500-

positions 2 and 3, forward and reflected power

millivolt power source is measured with load

m e a s u r e m e n t s of as high as a 10-watt RF

resistor R3.

power source are taken using outputs and load-

1-5