TB 9-4931-540-35
Table 11. 60 dB Bandwidth
Test instrument
Actual marker
RBW-VBW-ST
ENTRY
RBW-VBW-ST
offset
ENTRY
FREQUENCY
ENTRY
frequency
SWEEP TIME
SPAN
RES BW
indications
settings (sec)
settings
settings
3 Hz
100 Hz
23
10 Hz
200 Hz
15
30 Hz
500 Hz
10
100 Hz
2 kHz
8
300 Hz
5 kHz
5
1 kHz
20 kHz
5
3
kHz
50 kHz
5
10
kHz
100 kHz
5
30
kHz
500 kHz
5
(24) Divide first TI actual marker offset frequency indication recorded in table 11 by
first TI actual marker offset frequency indication recorded in table 10. Results will be < 11
to 1 ratio.
(25) Repeat (24) above for remaining TI actual marker offset frequency indications
recorded in tables 11 and 10.
(26) Disconnect synthesizer/level generator OUTPUT 50Ω from TI 50-75Ω input.
a. Performance Check
(1) Press keys and enter values using ENTRY keys as listed in (a) through (g)
below:
(a) ENTRY blue shift and then 604.
(b) ENTRY INSTR PRESET.
(c) ENTRY dB/DIV to 1 dB.
INPUT ENTRY RANGE to -20 dBm using ENTRY STEP ⇑ or ⇓.
(d)
(e)
ENTRY START FREQ to 100 kHz.
(f)
ENTRY STOP FREQ to 40.1 MHz.
(g)
TRACE CLEAR A.
(2) Allow one complete sweep to occur.
(3) Press keys and enter values using ENTRY keys as listed in (a) through (f)
below:
(a) TRACE STORE A → B.
(b) TRACE VIEW B to off.
(c) ENTRY SAVE and then 1.
