Crystal Vision
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TANDEM-300 User Manual R1.2
55
14/02/2008
Assigning GPI outputs
When only MENU DIL lever 6 is ON (DOWN) and all others are OFF (UP). GPI outputs
may be assigned by SEL positions 0-9 as summarised in the following table:
SEL
No.
Description
Mode 1 examples and comments
ADJ funct
0
1.1sl mask or
1.1sl flag
Selects silence of audio ch 1 embedder C, or ch 1 de-embedder A if
embedder is off, to be flagged or ignored (mask) by the GPO 5 output.
ADJ= flag or
mask
1
1.2sl mask or
1.2sl flag
Selects silence of audio ch 2 embedder C or ch 2 de-embedder A if
embedder is off to be flagged or ignored (mask) by the GPO 5 output.
ADJ= flag or
mask
2
1.3sl mask or
1.3sl flag
Selects silence of audio ch 3 embedder C or ch 3 de-embedder A if
embedder is off to be flagged or ignored (mask) by the GPO 5 output.
ADJ= flag or
mask
3
1.4sl mask or
1.4sl flag
Selects silence of audio ch 4 embedder C or ch 4 de-embedder A if
embedder is off to be flagged or ignored (mask) by the GPO 5 output.
ADJ= flag or
mask
4
2.1sl mask or
2.1sl flag
Selects silence of audio ch 1 de-embedder B to be flagged or ignored
(mask) by the GPO 6 output.
ADJ= flag or
mask
5
2.2sl mask or
2.2sl flag
Selects silence of audio ch 2 de-embedder B to be flagged or ignored
(mask) by the GPO 6 output.
ADJ= flag or
mask
6
2.3sl mask or
2.3sl flag
Selects silence of audio ch 3 de-embedder B to be flagged or ignored
(mask) by the GPO 6 output.
ADJ= flag or
mask
7
2.4sl mask or
2.4sl flag
Selects silence of audio ch 4 de-embedder B to be flagged or ignored
(mask) by the GPO 6 output.
ADJ= flag or
mask
8
S1AESinflg or
S1AESinmsk
Selects SDI 1 AES 2 input signal missing to be flagged by the GPO5
output.
This menu only appears if a DIP is fitted in SD1. AES 1 input
is unaffected by this option.
ADJ= inflg or
inmask
8
S1AESrfflg or
S1AESrfmsk
Selects SDI 1 reference input signal missing to be flagged by the
GPO5 output.
This menu only appears if a DOP2-75 or DOP2-110 is
fitted in SD1 and an AES reference is input to that sub-board.
ADJ= rfflg or
rfmask
9
S2AESinflg or
S2AESinmsk
Selects SDI 2 AES 2 input signal missing to be flagged by the GPO6
output.
This menu only appears if a DIP is fitted in SD2. AES 2 input
is unaffected by this option.
ADJ= inflg or
inmask
9
S2AESrfflg or
S2AESrfmsk
Selects SDI 2 reference input signal missing to be flagged by the
GPO6 output.
This menu only appears if a DOP2-75 or DOP2-110 is
fitted in SD2 and an AES reference is input to that sub-board.
ADJ= rfflg or
rfmask
Note:
Audio silence is deemed to refer to embedder audio signals only, unless that embedder is
OFF - in which case de-embedder signals are tested for silence.
If silence is sustained for more than the silence detect delay the assigned GPO will be
asserted low as an alarm when ‘flag’ is selected.
If an ‘input missing’ flag is effectively turned off by the ‘inmsk’ or ‘rfmsk’ setting it will
also be ignored in the ‘Auto’ menu (all menu levers ON/UP, SEL=0) as an error
condition.
