DRX-1
DRX-1
39
5.6 Nucleus 905: System Video VBI Loop
This nucleus tests the components on the video signal
path:
• The VIP
• The VSM
• The Host Decoder
The video CVBS signal is routed to the output of the
analogue board where it will be looped back by means of
an external cable.
Remark: this test is only successful if nucleus 121 is
carried out first.
NUCLEUS 905: SYSTEM VIDEO VBI LOOP
VIP
STI 5508
VSM
EMPRESS
DIGITAL BOARD
ANALOGUE BOARD
STV6410
SCART TV
SCART AUX
connector
1954
connector
1954
connector
1601
connector
1601
VIP_ICLK: 27MHz
7500
7507
7403
7200
7100
Fig. 14
5.7 Nucleus 906: Video User Dealer Loop
Nucleus for testing the components on the video signal
system path:
• The VIP
• The video encoder
• The VSM
• The host decoder
• The analogue board
On the analogue board, the video signal is internally
routed back to the digital board.
NUCLEUS 906: VIDEO USER DEALER LOOP
VIP
STI 5508
VSM
EMPRESS
DIGITAL BOARD
ANALOGUE BOARD
STV6410
connector
1954
connector
1954
connector
1601
connector
1601
VIP_ICLK: 27MHz
7500
7507
7403
7200
7100
Fig. 15
Summary of Contents for DRX-1
Page 99: ...DRX 1 DRX 1 99 TMP93C071 IC7803 ...
Page 100: ...DRX 1 DRX 1 100 STV5348 IC7990 UDA1334TS IC7506 ...
Page 106: ...DRX 1 DRX 1 106 MEMO ...
Page 133: ...A B C D E F G H I J 1 2 3 4 5 6 7 DRX 1 133 PRINTED CIRCUIT BOARD DVIO P C B Part 1 Top View ...
Page 134: ...2 A B C D E F G H I J 1 3 4 5 7 DRX 1 6 134 PRINTED CIRCUIT BOARD DVIO P C B Part 2 Top View ...
Page 192: ...DRX 1 192 DRX 1 ...