TB 9-6625-2345-35
(g) AUTO RESOLN (not illuminated).
(h) BLUE SHIFT.
(i) SPAN DIV, 2, MHz +dBX.
(9) Rotate TI RESOLUTION BANDWIDTH control to 3 MHz.
(10) Press TI keys as listed in (a) through (c) below:
(a) SINGLE SWEEP (twice and wait for sweep completion).
(b) GREEN SHIFT.
(c) PEAK FIND.
(11) Record displayed marker frequency indication in first row actual indication
column of table 8 for future reference.
(12) Press TI FREE RUN key.
(13) Repeat technique of (8) (g), (8) (h) and (9) through (12) above for remaining TI
settings listed in table 8 below.
Test nstrument
Span/Div
Resolution
Actual indication
2 MHz
3 MHz
1 MHz
3 MHz
200 kHz
1 MHz
20 kHz
100 kHz
2 kHz
10 kHz
200 Hz
1 kHz
20 Hz
100 Hz
(14) Calculate shape factor for each filter using actual indication values recorded in
(15) Press TI keys as listed in (a) through (c) below:
(a) FREE RUN.
(b) BLUE SHIFT.
(c) SPAN/DIV, 5, 0, Hz dB.
(16) Rotate TI RESOLUTION BANDWIDTH control to 10 Hz.
(17) Marker frequency displayed on TI CRT will be ≤ 150 Hz.
(18) Press TI keys as listed in (a) through (e) below:
(a)
MARKER MENU.
(b)
7.
(c)
0, Hz dB.
(d)
BLUE SHIFT.
(e)
RESET.
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