TB 9-6625-2235-24
(6) Set SWEEP TIME/DIV switch to 5 ms (2 ms for SN prefixed 2215A and below).
If frequency counter does not indicate 50 ms + dead time of ramp [(4) above] 4.0 ms (20 ms
+ dead time of ramp [(4) above] 1.5 ms for SN prefixed 2215A and below), perform b (2) below.
(7) Set SWEEP TIME/DIV switch to settings listed in table 3, and after
subtracting dead time from frequency counter indication. If difference is not within
specified limits, perform the listed adjustment step.
Table 3. Sweep Time
Test instrument
Frequency counter period
SWEEP
indication minus dead time
TIME/DIV
Dead time
Adjustment step
(ms)
switch
settings (ms)
(step)
Min
Max
(b)
.1
3
0.9
1.1
1
.2
3
1.8
2.2
1
.5
3
4.6
5.4
1
1
3
9.2
10.8
1
2
4
18.5
21.5
1
5
4
46
54
2
10
4
92
108
2
20
4
184
216
2
50
4
460
540
2
b. Adjustments
NOTE
Repeat measurements and adjustments as listed in table 3
until all sweep times are within specified limits.
Adjustments for SN prefix 2215A and below are shown at
(1) Subtract dead time value recorded in (3) above from frequency counter
(2) Subtract dead time recorded in (4) above from frequency counter indication and
counter in limits indication listed in table 3.
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