Crystal Vision
Using card edge controls
TANDEM-300 User Manual R1.2
47
14/02/2008
6.6 Audio monitoring
Audio monitoring is provided at the card edge with a miniature stereo jack socket. The
same signal can also be routed to the rear connector. The stereo source monitored can be
selected from any valid audio destination using the shaft encoder in Status/Config sub-
menu 11 (MENU DIL switch all levers UP or OFF, SEL switch to position 11).
The available audio monitoring settings are summarised in the following table:
SEL
No.
Description
Examples and comments
ADJ funct
A
Audio bus settings for
audio monitor
AUDbus=OFF or ON. Shaft encoder set
ON/OFF.
ADJ=
ON/OFF
B
Audio monitor source
Allows stereo source to
be selected for
headphone socket and
analogue rear audio
monitoring bus if
enabled.
Amon = xxxx, where xxxx indicates the
stereo pair selected for monitoring using
the ADJ shaft encoder.
Examples: A1 A2, A3 A4, B3 B4,
ADJ=
stereo pair
select
Notes:
When monitoring de-embedders, the audio channels can only be chosen from groups
selected in sub-menu 6 and 7 in the Status/Config menu.
The source for monitoring is selected prior to the audio routing in an embedder, and
accesses the input audio signals from the AIP or DIP card. The monitoring source for
de-embedded audio is taken after the audio routing, and accesses the output audio
signals normally fed to the AOP or DOP card. Phantom destination codes are used to
allow the analogue monitoring output to select routed de-embedded audio even though
an output option-card is not physically present
Audio monitoring is further discussed in section 10.3.
6.7 Enabling/disabling GPI inputs
The GPI inputs can be used to recall TANDEM-300 setups that have been stored
previously. This recall function can be disabled from the card edge.
Ensure that all MENU DIL switch levers are UP or OFF and the SEL switch is in position
F. Use the shaft encoder to select Disable or Enable.
SEL
No.
Description
Examples and comments
ADJ funct
F
GPI Enable/disable
Disables General Purpose Inputs.
General Purpose Outputs (GPOs) are not
disabled.
ADJ=
Disable/
Enable
