TB 9-4931-535-24
ENTRY INSTR PRESET.
(b)
(c)
ENTRY dB/DIV to 1 dB.
(d)
ENTRY REFERENCE LEVEL to -24.5 dBm.
(e)
RBW-VBW-ST RES BW HOLD to on.
(f)
(3) Press keys and enter values using ENTRY keys as listed in (a) and (b) below:
(a) RBW-VBW-ST ENTRY RES BW to 3 Hz.
(4) Allow one complete sweep to occur.
(5) Adjust MARKER/CONTINUOUS ENTRY knob to position marker on most
positive point of trace using TI marker amplitude indication.
(6) Press MARKER/CONTINUOUS ENTRY OFFSET key to on and then
MARKER/CONTINUOUS ENTRY ENTER OFFSET key.
NOTE
If TI offset frequency indication is not .0 Hz and amplitude
indication is not .00 dB, press MARKER/CONTINUOUS
ENTRY OFFSET key to off and repeat (6) above.
(7) Adjust MARKER/CONTINUOUS ENTRY knob to move marker down the left
side of trace until TI marker offset amplitude indication is between -2.98 and -3.02 dB.
(8) Press MARKER/CONTINUOUS ENTRY ENTER OFFSET key.
(9) Adjust MARKER/CONTINUOUS ENTRY knob to move marker to the right
side of trace until TI marker offset amplitude indication is between 0.02 and -0.02 dB.
(10) TI marker offset frequency indication will be within limits listed in table 6.
Record TI actual marker offset frequency indication in table 6.
(11) Press MARKER/CONTINUOUS ENTRY OFFSET to off.
(12) Repeat (3) and (11) above for remaining TI settings listed in table 6.
Test instrument
RBW-VBW-ST
ENTRY
Marker offset
Actual marker offset
ENTRY RES BW
FREQUENCY
frequency indication
frequency
SPAN settings
settings
indications
Min
Max
3
Hz
10
Hz
2.4
Hz
3.6
Hz
10
Hz
30
Hz
8.0
Hz
12.0
Hz
30
Hz
100
Hz
24.0
Hz
36.0
Hz
100
Hz
200
Hz
80.0
Hz
120.0
Hz
300
Hz
1
kHz
240.0
Hz
360.0
Hz
1
kHz
2
kHz
800.0
Hz
1200.0
Hz
3
kHz
10
kHz
2.40
kHz
3.60
kHz
10
kHz
20
kHz
8.0
kHz
12.0
kHz
30
kHz
100
kHz
24.0
kHz
36.0
kHz
14