TB 9-6625-2339-35
(23) Set synthesizer/level generator AMPTD INCR to 6 dB.
(24) Press TI Peak Search (or Search), Marker, [Delta] keys.
(25) Press synthesizer/level generator AMPLITUDE key then INCR ⇑ key.
(26) Press TI Marker key. Then lower the marker frequency by adjusting the RPG
knob (ccw) until the marker delta amplitude is 0 +/- 0.05 dB.
(27) Record the marker frequency readout as the lower 6 db frequency in table 18.
(28) Raise the TI marker frequency by adjusting the RPG knob (cw) until the marker
delta amplitude is 0 +/- 0.05 dB.
(29) Record the marker frequency readout as the upper 6 db frequency in table 18.
(30) Subtract the lower 6 dB frequency recorded in (27) above from the upper 3 dB
frequency recorded in (29) above. The result will be within the limits specified in table 18.
(31) Press synthesizer/level generator AMPLITUDE key.
(32) Press synthesizer/level generator INCR ⇓ key.
(33) Press TI Marker, [Off] keys.
(34) Repeat technique of (21) through (33) above for the TI BW and SPAN settings
Test instrument
SPAN
BW
∆ Mkr1 indications
settings
settings
MHz
kHz
kHz
Lower
Upper
Min
Max
marker
marker
kHz
kHz
frequency
frequency
180
120
102
138
13.5
9
7.65
10.35
(35) Press TI keys and enter values as listed in (a) though (d) below:
(a) Preset (Factory Preset softkey if it is displayed).
(b) System.
(c) [Alignments].
(d) [Auto Align], [All].
(36) Set all outputs to minimum and disconnect equipment setup.
b. Adjustments. None
a. Performance Check
NOTE
If necessary, perform measuring receiver and sensor module
ZERO and CALIBRATE.