4
ADJUSTMENTS
1. AFT
• AFT CONNECTION METHOD
IF MODULE PCB (TOP VIEW)
2-2. IF Module Circuit Adjustment Methods
ADJUSTMENT PARTS
L101
CHECKING POINT
P102
PIN
7
TEST EQUIPMENTS
Signal Gen.
Oscilloscope
Power Supply
INPUT SIGNAL
Refer to the following.
P101
P102
GND
CH1
0.5mS/DIV
50mV/DIV(10:1)
OUTPUT
SIGNAL
Modulation Method : 30% AM
fm : 400Hz
fc : 38.9MHz
SIGNAL LEVEL : 80dB
µ
V
GEN.
GND
GND
POWER SUPPLY
+9V +5V
(COMPONENT SIDE)
R191
L101
9
9
1
1
• ADJUSTMENT PROCEDURE
1) Connect the circuit as above connection diagram.
2) Set the each equipment setting as above description.
3) Adjust L101 to obtain 2.5
±
0.15V DC Voltage at check point.
Summary of Contents for DV-K88 series
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Page 76: ...73 CIRCUIT DIAGRAMS 9 6 If Module Circuit Diagram A2...
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Page 81: ...SECTION 10 COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW 78 P C B LOCATION 10 1 PCB Main...
Page 82: ...80 P C B LOCATION 10 3 PCB Logic DV K8K S S Series DV K86 S S Series DV K82 S S Series...
Page 83: ...81 P C B LOCATION DV K88 S S Series...
Page 84: ...SECTION 11 DISASSEMBLY 83 DISASSEMBLY 11 1 Packing Ass y...
Page 85: ...84 DIAGRAMS DV K88 Series DV K82 Series DV K8K Series DV K86 Series 11 2 Front Panel Assembly...
