Marconi Instruments TF 2502 - Chapter 2 OPERATION; General; Controls

Operation
2.1 GENERAL
The power meter has dual readout facilities - a large meter directly calibrated
in mean power and a small meter with an arbitrary calibration for use as a fast
response tuning indicator.
2.2 CONTROLS
MARCONI INSTRUMENTS IJD
Fig. 2.1 Layout of controls
Q) Type N input socket accepts inputs up to 60 V peak.
0 Thermocouple meter shows mean power in 50 Q load. Near linear scales of
0 to 3 W and 0 to 10 W are selected by Range switch.
0 Power range switch selects 3 W or 10 W full-scale on WATTS meter.
0 DIODE DETECTOR meter provides fast response tuning indication for the
source under test. Operates down to 5 MHz. Scale arbitrarily engraved from 0 to
100.
@ Sensitivity control adjusts the gain of the diode detector. The crescent
symbol indicates that sensitivity increases clockwise.
6 2502 (1)