TB 9-6625-106-24
(52) On the instrument controller press "q" to quit.
(53) The $ prompt will appear when calibration is complete.
(54) At the $ prompt on the instrument controller screen, type:
calterm 123 <ENTER>.
(55) Set function generator to 100 kHz at 0.707 V rms as indicated on the
multimeter, press any key on the instrument controller to continue.
(56) The $ prompt will appear when calibration is complete.
(57) Set function generator output to off and disconnect from TI.
(58) At the $ prompt on the instrument controller screen, type:
calterm 154 <ENTER>.
(59) The $ prompt will appear when calibration is complete.
(60) At the $ prompt on the instrument controller screen, type:
calterm 787 <ENTER> to store calibration data.
(61) The $ prompt will appear when calibration is complete.
(62) Repeat 11 a above.
12. Locked Low Noise FM Mode On
a. Performance Check
(1) Press TI keys as listed in (a) through (e) below:
(a) System, Reset.
(b) Edit L1, 0, dBm.
(c) Edit F1, 5, GHz.
(d) Modulation, FM, Internal/External, select external.
(e) on/off, turn on External FM.
(2) Allow measuring receiver to tune to TI carrier frequency, then measure FM
Deviation, with PEAK + -/2 detector, no filters, record FM Deviation reading as (N).
(3) On the TI press, on/off, turn off External FM.
(4) On the TI press, Internal/External, select Internal FM.
(5) On the TI press, Edit Deviation, 300, kHz.
(6) On the TI press, Mode, Locked Low Noise, <Previous.
(7) On the TI press, on/off, turn on Internal FM.
(8) Set measuring receiver to measure FM Deviation with PEAK + detector, and
record FM Deviation reading as (S+N).
(9) Calculate frequency deviation by using the following formula, Sactual = (S+N)-N.
(10) If the calculated frequency deviation is not within limits listed in table 12,
perform b below.
(11) On TI turn off Internal FM, then repeat (1) (c) through (e) and (3) through (10)
above for the remaining frequency listed in table 12. If the calculated frequency deviation
is not within limits listed in table 12, perform b below.