6-33
FVS-1000 MMP1
6-9. BKFV-300 Adjustment
6-9-1. DIF-120 Board Adjustment
The DIF-120 board has a power supply voltage generation circuit for the HD SDI TX module. In addition
to the 5 V and 3.3 V power supplied from the mother board,
_
5 V,
_
2 V and 1.2 V power supplies are
generated by this board.
Measuring instrument: Digital voltmeter
Tool:
Extension board EX-670 (For rear board)
Adjustment
1.
Pull out the DIF-120 board using the extension board EX-670 (for rear board).
2.
Connect the digital voltmeter to the following TPs, and adjust each RV so that the following specifi-
cations are satisfied. Connect GND to E101/DIF-120 (C-3).
m
.
Currently adjustment is not required as it is made factory-adjustment.
Measure a voltage when a part or parts of VR, etc. needs/need to be replaced.
When the measured value of voltage may not be within the specific value, however, then do an adjust-
ment.
.
As the metal board which is screw-clamped beside the TP101 is connected to GND, be careful of short-
circuit when measure voltage.
Measuring Point
Address
Specification
Adjustment RV
Address
Name
TP102
(B-7)
_
2.0
±
0.01 V
RV100
(A-4)
_
2 V adjustment
TP103
(D-7)
_
5.0
±
0.01 V
RV101
(C-4)
_
5 V adjustment
TP101
(A-6)
+
1.2
±
0.01 V
RV102
(B-4)
+
1.2 V adjustment
—
RV1100
(N-3)
Factry use only
RV100
RV101
TP106
TP100
TP101
TP102
TP103
TP1000 TP1001
TP800
TP801
TP900
TP901
TP401
TP400
TP500
TP1201
TP1200
TP105
TP104
RV102
RV1100
7
6
5
4
3
2
1
N
M
L
K
J
H
G
F
E
D
C
B
A
DIF-120 BOARD (A SIDE)
6-9. BKFV-300 Adjustment
