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4-3. SDI-68 Board Adjustment
n
Turn on the main power of the MAV-555A and measuring
equipment. Wait for at least 30 minutes before starting any
adjustments.
4-3-1. SDI Free-Run Adjustment
Preparation
1. Remove the SDI-68 board from the rear panel. (Refer
to Section 3-5-3.)
2. Supply the power from the regulated power supply to
CL151 (+3.3 V, 0.5 A), CL152 (+5 V, 1.5 A) and
CL153 (GND) on the B side on the SDI-68 board.
Connection
Oscilloscope
SDI-68 board
CH-2
TP
IN
D
C
TP101
3
1
RV101
TP401
2
RV401
1
RV701
1
TP701
1
2
CL153
CL152
CL151
C
3
D
MAV-555A
Frequency counter
CH-2
OUT
B
A
TP201
TP301
RV301
RV201
1
1
1
1
RV601
RV501
TP601
TP501
SDI-68 board (A side)
B
A
SDI-68 board (B side)
Adjustment Procedure
1. Equipment : Frequency counter, oscilloscope
Test point : TP101 (D-3)/SDI-68 board
Adj. point : 1RV101 (D-3)/SDI-68 board
27.00 ± 0.10 MHz
Spec. :
2. Equipment : Frequency counter, oscilloscope
Test point : TP201 (A-2)/SDI-68 board
Adj. point : 1RV201 (A-2)/SDI-68 board
27.00 ± 0.10 MHz
Spec. :
3. Equipment : Frequency counter, oscilloscope
Test point : TP301 (B-2)/SDI-68 board
Adj. point : 1RV301 (B-2)/SDI-68 board
27.00 ± 0.10 MHz
Spec. :
4. Equipment : Frequency counter, oscilloscope
Test point : TP401 (C-2)/SDI-68 board
Adj. point : 1RV401 (C-2)/SDI-68 board
27.00 ± 0.10 MHz
Spec. :
5. Equipment : Frequency counter, oscilloscope
Test point : TP501 (A-1)/SDI-68 board
Adj. point : 1RV501 (A-1)/SDI-68 board
27.00 ± 0.10 MHz
Spec. :
6. Equipment : Frequency counter, oscilloscope
Test point : TP601 (B-1)/SDI-68 board
Adj. point : 1RV601 (B-1)/SDI-68 board
27.00 ± 0.10 MHz
Spec. :
7. Equipment : Frequency counter, oscilloscope
1
Test point : TP701 (C-1)/SDI-68 board
Adj. point : 1RV701 (C-1)/SDI-68 board
27.00 ± 0.10 MHz
Spec. :
Setting after Adjustment
1. Remove the power supply to which CL151, CL152
and CL153 are connected.
2. Install the SDI-68 board in the rear panel.
3. Install the rear panel to the MAV-555A.
4-3. SDI-68 Board Adjustment
4-3 (E)
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