HP 8901B Operation And Calibration Manual page 374

Model
8901B
Performance Tests
Performance Test 10
HIGH-SELECTIVITY FILTERS TESTS (OPTIONS 032 AND 033)
Specification
SELECTIVE POWER:
Filter
Shape
-6
- a
-2
0
2
4 6 8 10
12
11 18
18 Io
RELATIVE FREQUENCY (kHz)
12,5 kHz Filter Shape (Option 032)
--
-6
-4 -2
0
2 4 6
8
10
12
14
18 18
Io
22
24 20
RELATIVE FREWENCY (kM)
25 kHz Filter Shape (Option 033)
Description
The accuracy of the high-selectivity filters is tested by feeding a 455 kHz CW signal directly into the
IF
via the front-panel input connector. As the frequency of the input is changed, the shape of the
IF'
is determined.
NOTE
This procedure tests only instruments with the
12.5
kHz Adjacent Chunnel
Filter (Option
032)
or
25
kHz Adjacent Channel Filter (Option
033)
or
both. Depending on the combination
of
these filters with the other available
filter options (Options
035
and
037),
either filter can be defined as the
"wide" or "narrow"fi1ter with regards to Special finction
24,
which is used
in the procedure. Follow the procedure or procedures which apply to the
instrument's particular option combination.
Equipment
Signal Generator.
. . .
. . .
. . . . . . . . . . . . . . . . .
,
. . . . . . . . . . . . . . . . . . . . .
.
. . . . . .
HP 8640B or HP 3336C
Performance Test
10
4-33