TB 9-6625-2340-24
(73) Press TI keys as listed in (a) through (e) below:
MARKER OFF.
(a)
RES BW, 30, kHz.
(b)
FREQUENCY SPAN, 100, kHz.
(c)
SCALE LIN.
(d)
REFERENCE LEVEL.
(e)
(74) Adjust TI DATA knob to position trace at (or just below) reference level (top)
graticule line.
(75) Connect 21.4 MHZ CRYSTAL FILTER BYPASS NETWORK(S) (fig. 18) between
A4A4TP1 and A4A4TP2 and between A4A4TP4 and A4A4TP5 (fig. 19).
Figure 19. A4A4 test points.
(76) Adjust A4A4C20 (fig. 19) to center signal on center vertical graticule line.
(77) Adjust A4A4C9 (fig. 19) for best symmetry of signal.
(78) Remove 21.4 MHZ CRYSTAL FILTER BYPASS NETWORK(S) (fig. 18) from
between A4A4TP4 and A4A4TP5 (fig. 19).
(79) Adjust A4A4C74 (fig. 19) to center signal on center vertical graticule line.
(80) Adjust A4A4C39 (fig. 19) for best symmetry of signal.
(81) Remove 21.4 MHZ CRYSTAL FILTER BYPASS NETWORK(S) (fig. 18) from
between A4A4TP1 and A4A4TP2 (fig. 19).
(82) Adjust A4A4C73 (fig. 19) to center signal on center vertical graticule line.
(83) Adjust A4A4C65 (fig. 19) for best symmetry of signal.
(84) Press TI keys as listed in (a) through (c) below:
MARKER .
(a)
FREQUENCY SPAN, 20, kHz.
(b)
RES BW, 3, kHz.
(c)
level should
(85) Adjust A4A4R49 (fig. 19) to align markers on TI display. MKR
indicate 1.00X.
(86) Disconnect 97 (white/violet) cable from A4A6J1 (fig. 9).
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