TB 9-6625-2297-24
Figure 2. Power reference level test setup.
(8) Set power meter LINE switch to ON position.
(9) Allow equipment and thermistor mount to warm-up for 30 minutes before
proceeding to (10) below.
(10) Set power meter RANGE switch to COURSE ZERO and adjust power meter
front panel COURSE ZERO control for a zero meter indication.
(11) Fine zero the power meter on the most sensitive range and then set the power
meter RANGE switch to 1 mW.
(12) Set multimeter to measure dc microvolts and ensure inputs are disconnected
from chassis ground.
(13) Connect multimeter Input HI to center conductor of power meter rear panel
VCOMP connector and Input LO to center conductor of power meter rear panel VRF
connector.
V, record multimeter
(14) If multimeter indication is between 400 and +400
indication and proceed to (16) below; if not, proceed to (15) below.
(15) Hold power meter FINE ZERO control and adjust COURSE ZERO control for
a multimeter indication between 200 and +200 V. Record multimeter indication.
(16) Round off indication recorded in (14) or (15) above to the nearest microvolt and
record this value as V0.
key. Record
(17) Press FUNCTION SHIFT key then DATA ENTRY PWR REF/
multimeter indication as V1.
chassis ground.
(19) Record multimeter indication as VCOMP.
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