Matrix Audio Designs
40
Null Modem Cable
Please note:The primary design of the MRC- 8e/ 8.4e is to operate in a single chassis
configuration.,While dual chassis configurations are possible,you need to be aware that some
of the behavioural characteristics surrounding the source device selection.
You may not wish to take advantage of the switched power of the sources since power
synchronization will be an issue between multiple MRC- 8e/ 8.4e chassis.
It is recommended that in dual system scenarios,you may want to leave the source devices
fully powered at all times.
The RS232 also provides real time status reporting on keypad activities.
Information messages are sent using the above syntax,and are recognizable because the 1st
character in the string is repeated.
ZZ11 is the same as Z11, but the 1 st was generated by the keypad,and the latter via
command from the RS232 port.Volume is sent onlyAFTER the user has completed adjusting
the zone and released the volume key for more than 2 seconds.
This minimizes unwanted strings of volume commands while the user adjusts and only
reports the end value.
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