TB 9-6625-2250-24
(7) Press TI keys as listed in (a) through (e) below:
AMPLITUDE.
(a)
[MORE].
(b)
[IF ADJUST].
(c)
[ADJ CURR IF STATE] wait for IF ADJUST STATUS messages to disappear.
(d)
SPAN then [ZERO SPAN].
(e)
peak signal amplitude on TI.
NOTE
At 2 MHz setting, several minor peaks might be observed.
Select peak with highest amplitude.
key.
(9) Press synthesizer/level generator AMPLITUDE key then INCR
(10) Press TI MARKER ON key then [MARKER DELTA] key.
(11) Press synthesizer/level generator INCR
key.
MKR indication between -0.02 and +0.02 dB. Record synthesizer/level generator
a TI
frequency indication as upper 3 dB frequency.
(13) Decrease synthesizer/level generator frequency past TI signal peak amplitude
MKR indicates between -0.02 and +0.02 dB. Record synthesizer/level generator
until
frequency indication as lower 3 dB frequency.
(14) Subtract lower 3 dB frequency recorded in (13) above from upper 3 dB frequency
recorded in (12) above. The result will be within the limits specified in table 3. Record the
result as actual 3 dB bandwidth in table 3.
(15) Set synthesizer/level generator frequency to 40 MHz.
(16) Press TI MARKER OFF key.
Table 3. Resolution Bandwidth Accuracy
Test instrument
3 dB Bandwidth Limits
Actual Bandwidth
CONTROL BW
Lower 3 dB
Upper 3 dB
[RES SW]
frequency
frequency
3dB
60 dB
settings
Min
Max
(14)
(27)
2 MHz
1.5 MHz
2.5 MHz
1 MHz
750
kHz
1.25 MHz
300 kHz
270
kHz
330
kHz
100 kHz
90
kHz
110
kHz
30 kHz
27
kHz
33
kHz
10 kHz1
9
kHz
11
kHz
See footnote at end of table.
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