Gilderfluke&Co old MACs 8 bit Digital Audio System User Manual

Page 74

mute level to be taken.

EXAMPLE: to mute zone 1, 5 and 6, and half mute zone 3, 4, and 8:

? 8 C 3 1

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"[" (PA ZONE) (PA STATION) (TRUNK#) PA Command:

This command usually comes from the PA MASTER in a digital audio system which is equipped
with a PA system.

This command opens the TRUNK# for each valid request for a PA ZONE. The only PA ZONES
which any card will respond to are those which have been enabled through the setup routine.

If the PA STATION number is equal to the TOP PRIORITY PA STATION for a given card, then that
PA request will take priority over all other PA requests for that card. The same holds true for the
SECOND PRIORITY PA STATION, except that TOP PRIORITY PA requests will take precedence over
these too.

If no other priority options are 'on', then all other valid PA requests are treated equally. If more
than one valid PA request is active at a time, the audio from both will be mixed.

If the STANDARD PRIORITIES are on, then it uses the PA STATION number to prioritize PA requests.
Any request from a higher numbered PA STATION will take precedence over lower numbered
PA STATIONS. Only one PA request is allowed on at a time.

If the ZONE PRIORITIES are on, then it uses the PA ZONE number to prioritize PA requests. Any
request from a higher numbered PA zone will take precedence over lower numbered PA
zones. Only one PA request is allowed on at a time.

If both ZONE and STANDARD PA PRIORITY options are 'on', then the system will use a
combination of the two priorities. If the PA system is active and a request from either a higher
numbered PA STATION or PA ZONE comes in, the new request will be honored. All other
requests will be ignored.

EXAMPLE: if a pa request comes in from PA STATION 55 to access PA zone AA, with the audio feed

to be found on trunk line 3:

[ A A 5 5 3

"]" (TRUNK#)

Clear PA Request:

This command usually comes from the PA MASTER in a digital audio system which is equipped
with a PA system.

This command is used to clear PA requests on the digital audio Repeater cards. When a valid
PA request comes in to any card, it opens up the appropriate PA TRUNK LINE to feed the audio
from the PA STATION to the Repeater card. This command clears the PA request by turning off
the TRUNK# of the PA request. If all the trunk lines are off, then it turns off the PA LED on the
front of the card and allows the mute level to return to whatever it was before.

EXAMPLE: to clear any PA requests which used trunk line 3:

] 3

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