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9-5-6. ADC Sampling Phase Adjustment
n
Use the identical probes of the oscilloscope.
Adjustment procedure
1. Insert an alignment tape (ZR5-1/P) and put the unit
into the PB mode.
2. Oscilloscope settings
• AC mode
• 20 MHz BW Limit:OFF
• Set the GND levels of CH-1 and CH-2 are at the
center of the oscilloscope.
3. A/Ech Adjustment
: TP104 (A-3:B) /EQ-54
Test point
: TP105 (A-3:B) /EQ-54
TRIG
Adjustment point : 1CV100 (A-2:B) /EQ-54
: A = 0 ±2 ns
Specification
DVW-250/250P
4. Adjust the B/F, C/G, D/H channels in the same way.
Test point
TRIG
B/Fch TP204 (C-3:B)
TP205 (C-3:B)
C/Gch TP304 (D-3:B)
TP305 (D-3:B)
D/Hch TP404 (F-3:B)
TP405 (E-3:B)
5. Eject the tape.
G
F
E
1
RV400
2
CV400
TP404
3
RV404
TP405
4
TP11
F
E
D
9-5. RF System Adjustment
Adjustment point
1CV200 (B-2:B)
1CV300 (D-2:B)
1CV400 (E-2:B)
D
C
B
A
RV300
RV200
RV100
CV300
CV200
CV100
TP104
TP304
TP204
RV104
RV204
RV304
TP305
TP205
TP105
EQ-54 Board B side
TP13
TP12
C
B
A
MB-601 Board A side
9-19
3
2
1
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