TB 9-6625-2340-24
(63) Disconnect 97 (white/violet) cable from A4A8J1 (fig. 13) and connect cable to
measuring receiver power sensor.
(64) Set measuring receiver to measure power.
(65) Adjust TI AMPTD CAL control for a measuring receiver indication of 5 dBm.
(66) Disconnect measuring receiver power sensor and reconnect 97 cable to A4A8J1
(67) Press TI keys as listed in (a) and (b) below:
SCALE LIN.
(a)
MARKER NORMAL.
(b)
(68) Adjust A4A5R33 (fig. 15) for an indication of 70.7 mV on TI (R). Trace on TI
should be at top graticule line.
(69) Connect equipment as shown in figure16.
(70) Press TI REFERENCE LEVEL, 30, and dBm keys.
(71) Set attenuator No. 1 to 5 dB and attenuator No. 2 to 20 dB.
key.
(72) Press TI MARKER
(73) Signal trace should be at the center graticule line. TI MKR
LVL as, indicated
by indication, should be .00 dB.
(74) Press TI REFERENCE LEVEL, 40, and dBm keys.
(75) Set attenuator No. 2 to 30 dB.
LVL of .00 dB (MKR
LVL indication
(76) Adjust A4A5R32 (fig. 15) for a TI MKR
is now in the upper right corner of TI display).
(77) Press TI REFERENCE LEVEL, 50, and dBm keys.
(78) Set attenuator No. 2 to 40 dB.
(79) Adjust A4A5R44 (fig. 15) for a TI MKR
LVL of .00 dB (MKR
LVL indication
is now in the upper right corner of TI display).
(80) Press TI REFERENCE LEVEL, 70, and dBm keys.
(81) Set attenuator No. 2 to 60 dB.
LVL of .00 dB (MKR
LVL indication
(82) Adjust A4A5R54 (fig. 15) for a TI MKR
is now in the upper right corner of TI display).
(83) Press TI keys as listed in (a) through (c) below:
(a) REFERENCE LEVEL, 19.9, dBm.
(b) MARKER .
(c) MARKER .
(84) Set attenuator No. 2 to 10 dB.
(85) Press TI REFERENCE LEVEL, 17.9, and dBm keys.
(86) Set attenuator No. 1 to 3 dB and attenuator No. 2 to 10 dB.
(87) TI MKR
LVL as indicated by TI annotation should be .00 0.5 dB.
(88) Press TI REFERENCE LEVEL, 15.9, and dBm keys.
(89) Set attenuator No 1 to 1 dB.
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