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BD-V1100, BD-V1110
6. ADJUSTMENT
Note : Refer to the "Service Know-how (SKB54005)" for the details.
Oscilloscope 3
Spectrum Analyzer
QPSK Modulator
ATT 2
(105MHz)
EIA Color Bar CH
SINX/X CH
BTSC
Separation CH
QPSK Modulator
ATT 3
(70MHz)
256QAM Modulator
ATT 4
(663MHz)
64QAM Modulator
ATT 5
(513MHz)
Input Signals
1 QPSK Modulator
Center Freq. = 105MHz
Video
2 EIA Color Bar
Audio
Video
3 SINX/X
Audio
Video
4 BTSC Separation
Audio
5 QPSK Modulator
Center Freq. = 70MHz
6 256QAM Modulator
Center Freq. = 663MHz
7 64QAM Modulator
Center Freq. = 513MHz
Note 1 : Perform the NTSC ch setting if necessary.
2 : Set the Fv/Fa difference to -15dB.
46
Video Analyzer
Oscilloscope 1
TV Receiver
Video
Audio
Separator
1
S1
ATT 1
2
E
3
SWITCHING
POWER
SUPPLY
4
ASSY
5
6
7
DC Volt Meter
Fig.1 Adjustment Connections
All slots have to be opened. (for QPSK Tx Adj.)
EIA Color Bar 87.5% Mod.
1kHz Sin Wave ± 25kHz Dev.
SINX/X (0.5MHz~3.75MHz)
400Hz Sin Wave ± 25kHz Dev.
Black 0 IRE Flat Signal
L = 300Hz, R = 3.1kHz Sin Wave 14% Mod. Each CH
Video Stream = Full White APL100% MPEG2 Video
Audio Stream = 1kHz FS -20dB MPEG1 Audio
Data channel
TV Monitor
75Ω termination
through
2
1
Output (L)
CABLE IN
TO TV
AUDIO
OUT
F2003
TP1802
(BTSC L)
VR1801 VR1701
TP1801
(BTSC R)
VR1901
A
TP1902
(VCO)
TC1901
TP1901
(AGC)
(54MHz VCXO)
L1908
T1901
1
2
High Imp.
S3
Oscilloscope 2
S2
2
S5
1
S4
2
1
Distortion Meter
VIDEO
OUT
MAIN ASSY
TP1401
Amp.
Probe
Frequency
Counter
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