TB 9-4920-456-24
NOTE
If measuring receiver indications are within specified limits
and if calibration label (located near REPLY ATTEN switch)
does NOT have any values, record actual receiver indications
on calibration label.
(14) Set REPLY ATTEN switch to down position. If measuring receiver does not
indicate -6 dB or less and within 0.5 dB of value (BOT 305) recorded on calibration label
(located near REPLY ATTEN switch), record measuring receiver indication and perform
b (8) below.
(15) On signal generator turn RF OUTPUT off.
(16) Disconnect TI attached 50 Ω load from TOP ANT.
(17) Disconnect signal generator 50 Ω coaxial cable from TI BOT ANT and connect
cable to TOP ANT.
(18) Connect TI attached 50 Ω load to BOT ANT connector.
(19) On signal generator, turn RF OUTPUT on.
(20) If measuring receiver does not indicate -6 dB or less and within 0.5 dB of value
(TOP 305) recorded on calibration label (located near REPLY ATTEN switch), record
measuring receiver indication and perform b (8) below.
(21) Set REPLY ATTEN switch to up position. If measuring receiver does not
indicate between -18.0 and -21.0 dB and within 0.5 dB of value (TOP 137) recorded on
calibration label (located near REPLY ATTEN switch), perform b (l) through (7) below.
(22) On signal generator turn RF OUTPUT off.
b. Adjustments
NOTE
Ensure signal generator with 50 Ω coaxial cable is connected to
TI BOT ANT and measuring receiver sensor module is
connected to TI RF.
(1) Set TI power switch off and remove adapter-signal-divider from TI case.
(2) Set TI power switch on and allow sufficient time to warm-up.
(3) Set NORMAL, REPLY PWR/FREQ switch to down position and REPLY
ATTEN switch to up position.
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