IEC 30 Series - Page 36

SECTION 4
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Table 4-2. Calibration and Performance Checks (Continued)
Step
Calibration
Control Setting
Test
Equipment
(Mode)
Procedure
15.0
SWEEP (F34)
15. 1
AMPLITUDE
SWP TIME @ 10 ms
SWP VERN
@ Cal
MODE
@ CaNT SWP
DVM-AC
DVM-DC
1.
Connect DVM to 1C15
pin 12.
Measure.833 ± .016 vac
(1. 55 ±O. 30 vdc)
1.
Connect counter to
Sync Out BNC.
2.
Measure & record
freq. F.
3.
Set FREQ dial @ 1. 0
Measure and record
freq:F
2
1.
Connect scope to OUT
BNC.
2.
Adj. R203 for zero
sweep (FM) on scope
display
1.
Connect counter to
Sync Out BNC
2.
Adj. SWP VERN to best
observe max. fre-
quency on counter.
3. Adj. R190 to obtain the
same max. freq value
recorded as F, above
(15.1. 2) within ±1%.
1.
Adj. SWP VERN to best
observe maximum fre-
quency on counter.
2. Measure and record
max freq: F
3
3.
If F3 is more than 5%
higher than F2 (recor-
ded in stop 15.1. 3
above): loosen hex nut
on.SWP LIM
pot R210
and rotate pot CWo
Remeasure F
3
.
15.2
DIAL CALIB A
FREQ Mult @ 10K
Dial @ 3.0
MODE
@ CaNT
Counter-
Freq.
15.3
ZERO SWEEP
AnI.
FREQ DIAL @ 0.3
MODE @ CaNT Swp
SWP LIM
@ ccw Stop
SWP TIME
@ 1 sec
SWP VERN @ Cal
Scope
15.4 DIAL CALIB:
high
SWP LIM
@ 3.0 Counter-
Freq
15.5
DIAL CALIB:
Low
SWP LIM
@ 1.0
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