TB 9-6625-2340-35
(100) Adjust A4A8C42 (fig. 20) for best symmetry of signal.
(101) Remove 21.4 MHZ CRYSTAL FILTER BYPASS NETWORK(S) (fig. 18) from
(102) Connect 21.4 MHZ CRYSTAL FILTER BYPASS NETWORK(S) (fig. 18) between
(103) Adjust A4A8C29 (fig. 20) to center signal on center vertical graticule line.
(104) Adjust A4A8C13 (fig. 20) for best symmetry of signal.
(105) Remove 21.4 MHZ CRYSTAL FILTER BYPASS NETWORK(S) (fig. 18) from
(106) Press TI keys as listed in (a) through (c) below:
(b) MARKER ∆.
(c) RESA BW, 3, kHz.
(107) Adjust A4A8R40 (fig. 20) to align markers on display. MKR LVL should
indicate 1.00X.
(108) Press TI 2-22 GHz key.
(109) Set attenuators for 25 dB.
(110) Press TI keys as listed in (a) through (h) below:
(a)
(b)
FREQUENCY SPAN, 3, kHz.
(c)
RES BW, 1, kHz.
(d)
ATTEN, 0, dB.
REFERENCE LEVEL, 30, -dBm.
(e)
(f)
SCALE LOG, 1, dBm.
MARKER ∆.
(g)
REFERENCE LEVEL, 20, -dBm.
(h)
(111) Set attenuators for 15 dB.
(112) Adjust A4A8R7 (fig. 13) to align markers on display. MKR ∆ LVL should
indicate 0.00dB.
(113) Press TI REFERENCE LEVEL, 10, and -dBm keys.
(114) Set attenuators for 5 dB.
(115) Adjust A4A8R6 (fig. 13) to align markers on display. MKR ∆ LVL should
indicate 0.00dB.
(116) Press TI 2-22 GHz key.
34