DRX-1
DRX-1
38
5.4 Nucleus 903: Digital Video VBI Loop
Nucleus for testing the components on the video VBI
signal path:
• The VIP
• The VSM
• The Host Decoder
This is done by using the internal test signal source (digital
board only)
Remark: this test is only successful if nucleus 121 is
carried out first.
NUCLEUS 903: DIGITAL VIDEO VBI LOOP
VIP
STI 5508
VSM
EMPRESS
DIGITAL BOARD
ANALOGUE BOARD
STV6410
VIP_ICLK: 27MHz
7500
7507
7403
7200
7100
Fig. 12
5.5 Nucleus 904: System Video 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 will be routed to
the SCART (EUROPE) or CINCH (NAFTA). There it will
be looped back externally by means of the proper cable.
NUCLEUS 904: SYSTEM VIDEO 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. 13
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 ...