TB 9-6625-2271-40
(8) Press SPCL key and enter 26 ENTER using DATA ENTRY keys.
(9) Adjust A0R7 (fig. 3) for minimum indication on spectrum analyzer (R).
(10) If <-75 dB was not achieved in (9) above then alternately adjust A0C32, A0C33,
and A0R7 (fig. 3) for minimum indication on spectrum analyzer (R).
(11) Disconnect spectrum analyzer from equipment setup.
(12) Disconnect TI OUTPUT HIGH from INPUT HIGH and LOW.
(13) Connect TI OUTPUT HIGH to INPUT HIGH and connect OUTPUT LOW to
INPUT LOW.
(14) Press keys and enter values using DATA ENTRY keys as listed in (a) through
(l) below:
LCL INIT.
(a)
SOURCE LEVEL.
(b)
3 V.
(c)
SOURCE FREQ.
(d)
100 kHz.
(e)
INPUT FLOAT (assure illumination).
(f)
SPCL.
(g)
17 ENTER.
(h)
28 ENTER.
(i)
RATIO.
(j)
SPCL.
(k)
27 ENTER.
(l)
(15) Adjust A0C5 (fig. 3) for a 100.0 percent indication on TI (R).
(16) Press SPCL key and enter 26 ENTER using DATA ENTRY keys.
(17) Adjust A0C32 (fig. 3) for a 100.0 percent indication on TI (R).
(18) Reverse INPUT HIGH and LOW connections and repeat (13) above.
(19) Adjust A0C10 (fig. 3) for a 100.0 percent indication on TI (R).
(20) Press SPCL key and enter 26 ENTER using DATA ENTRY keys.
(21) Adjust A0C33 (fig. 3) for a 100.0 percent indication on TI (R).
10. Frequency Measurement
a. Performance Check
(1) Connect function/arbitrary generator SIGNAL to TI INPUT HIGH using a
50
feed through termination.
(2) Connect a time/frequency workstation 10 MHz output to function/arbitrary
generator EXT REF IN 10 MHz (rear panel).
(3) Press keys as listed in (a) and (b) below.
(a) LCL INIT.
(b) ANALYZER FREQ.