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Adjustment Procedure
1. Set up the measurement equipment as follows:
. Vectormonitor :
SCH mode, INPUT : CH-B, EXT REF
. Signal generator SG2(1411) :
Synchronization : GEN LOCK
2. Adjust the PHASE knob of a vectormonitor to adjust
the sync phase to 0d.
3. Change the vectormonitor setting as follows.
INPUT : CH-A
4. Adjust the HORIZ DELAY knob of a signal generator
SG2 to adjust the sync phase to 0d.
5. Set up an oscilloscope as follows:
CH-1 : TP1212 (C-1)/TM-40 Board, DC 2 V/DIV
CH-2 : FRAME REF/SG1 (TSG-131), DC 5 V/DIV
TIME : 20 ms/DIV
TRIG : CH-2 (_slope)
6. Turn the RV1201 (B-1)/TM-40 board fully counter-
clockwise (3).
7. Turn the RV1201 slowly clockwise (2) until the
oscilloscope CH-1 waveform appears in the field 1.
2-Frame
FRAME REF
TP1212
(Field 1)
(Field 3)
MAV-555
8. Turn the SC PHASE knob of a signal generator SG2
slowly in the direction of _90d (2). The vectormoni-
tor waveform at the moment when the oscilloscope
CH-1 waveform appears in field 3, is defined as the
waveform A.
b
B
9. Turn the SC PHASE knob of a signal generator SG2
slowly in the direction of 0d (3). The vectormonitor
waveform at the moment when the oscilloscope CH-1
waveform appears in field 1, is defined as the wave-
form B.
10. Adjust the RV1201 and repeat steps 7 through 9 until
the specification [a = b] is satisfied.
11. Return the SC PHASE knob of a signal generator SG2
to the 0d position.
12. Turn the SC PHASE knob of a signal generator SG2
slowly in the direction of _90d (2). The vectormoni-
tor waveform at the moment when the oscilloscope
CH-1 waveform appears in field 3, is defined as the
waveform C.
D
d
13. Turn the SC PHASE knob of a signal generator SG2
slowly in the direction of 0d (3). The vectormonitor
waveform at the moment when the oscilloscope CH-1
waveform appears in field 1, is defined as the wave-
form D.
14. Confirm that [c = d].
4-4. TM-40 Board Adjustment
a
A
C
c
4-9 (E)
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