TB 9-4931-540-24
Test instrument
RBW-VBW-ST
ENTRY
RBW-VBW-ST
Marker
ENTRY
FREQUENCY
ENTRY
Actual marker
SWEEP TIME
SPAN
RES BW
indications
settings (sec)
settings
settings
indications
Min
Max
3 Hz
10 Hz
15
2.4
Hz
3.6
Hz
10 Hz
30 Hz
8
8.0
Hz
12.0
Hz
30 Hz
100 Hz
7
24.0
Hz
36.0
Hz
100 Hz
200 Hz
6
80.0
Hz
120.0
Hz
300 Hz
1 kHz
6
240.0
Hz
360.0
Hz
1 kHz
2 kHz
6
800.0
Hz
1200.0
Hz
3 kHz
10 kHz
6
2.4
kHz
3.6
kHz
10 kHz
20 kHz
6
8.0
kHz
12.0
kHz
30 kHz
100 kHz
6
24.0
kHz
36.0
kHz
(14) Press keys and enter values using ENTRY keys as listed in (a) through (d) below:
ENTRY dB/DIV to 10 dB.
(a)
RBW-VBW-ST ENTRY RES BW to 3 Hz.
(b)
(c)
RBW-VBW-ST ENTRY SWEEP TIME to 23 sec.
(d)
(15) Allow one complete sweep to occur.
(16) Adjust MARKER/CONTINUOUS ENTRY knob to move marker to the most
positive point on trace using marker amplitude.
(17) Press MARKER/CONTINUOUS ENTRY OFFSET key to on and then press
MARKER/CONTINUOUS ENTRY ENTER OFFSET key.
(18) Adjust MARKER/CONTINUOUS ENTRY knob to move marker down the left
side of trace until marker amplitude indication is between -59.6 and -60.4 dB.
(19) Press MARKER/CONTINUOUS ENTRY ENTER OFFSET key.
(20) Adjust MARKER/CONTINUOUS ENTRY knob to move marker to the right
side of trace until marker amplitude indication is between 0.4 and -0.4 dB.
(21) Record TI actual marker offset frequency indication in table 11.
(22) Press MARKER/CONTINUOUS ENTRY OFFSET key to off.
(23) Repeat (14) through (22) above for remaining TI settings and indications listed
Test instrument
RBW-VBW-ST
ENTRY
RBW-VBW-ST
Actual marker
ENTRY
FREQUENCY
ENTRY
offset
SWEEP TIME
SPAN
RES BW
frequency
settings (sec)
settings
settings
indications
3 Hz
100 Hz
23
10 Hz
200 Hz
15
30 Hz
500 Hz
10
25