TB 9-4931-488-35
Table 12. Output Level Accuracy (Option 003)
Measuring receiver indications
Test instrument
(dB)
OUTPUT LEVEL
switch settings
Min
Max
(dBm)
-10
-12.75
-7.75
-20
-22.75
-17.75
-30
-32.75
-27.75
-40
-42.75
-37.75
-50
-53.25
-47.25
-60
-63.25
-57.25
-70
-73.25
-67.25
-80
-83.25
-77.25
-90
-93.25
-87.25
-100
-103.25
-97.25
-110
-113.25
-107.25
(10)Release COUNTER MODE LOCK ON pushbutton.
b. Adjustments
(1) Position controls as listed in (a) through (d) below:
(a)
AM X10% pushbutton pressed.
(b)
AM switch to OFF.
(c)
MODULATION FREQUENCY RANGE switch to FIXED FREQ 1 kHz.
(d)
AM control fully ccw.
(2) Connect multimeter INPUT HI to DC OUTPUT A2TP3 (fig. 1) and INPUT LO
0.000 1 mV dc (R).
(3) Disconnect multimeter INPUT HI from DC OUTPUT A2TP3 and connect
(4) Adjust METER OFFSET A2R14 (fig. 1) for multimeter indication of 0.000 1 mV
dc (R).
(5) Disconnect multimeter INPUT HI from METER ADJ A2TP4 (fig. 1) and connect
