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®
3
Cable Wiring
The cable wiring to connect the Concert AVR-1 to your control system
will depend on the RS-232 output connection on the controller. Make cer-
tain that you wire the Transmit Data output on the serial controller to the
Receive Data on the Concert AVR-1 and vice versa on the Receive Data
line on the controller system. Connect the signal grounds on the control
system and the Concert AVR-1 together. The RS-232 connection on the
Concert AVR-1 is a DB-9 Male wired as follows:
Pin 2 Receive Data (RXD)
Pin 3 Transmit Date (TXD)
Pin 5 Ground
To connect the Concert AVR-1 to a standard PC serial comm port; wire
the cable in a ‘null modem’ arrangement using the appropriate serial cable.
Command Structure - Issuing
The RS-232 serial control structure of the Concert AVR-1 is a string of
hexadecimal values with a minimum of six bytes. When issuing a com-
mand, the structure of the string is as follows: Start Transmission, Zone
Number, Command Code, Data Length, Data and End Transmission. We
will use an abbreviated form for easy reference in the following format:
<ST><ZN><CC><DL><Data><ETR>
Parameter
Command
Description
s
tart
0x21
Begins transmission to
Concert AVR-1
Z
one
n
umber
0x01
Zone 1
0x02
Zone 2
0x03
Zone 3
C
ommand
C
ode
See code list
The code of the
command
d
ata
L
ength
0x01, 0x02 etc…
Number of data units
to follow
d
ata
See code index
The parameters for the
command
ETR
0x0D
End transmission
As an example:
To change the Concert AVR-1 video source in Zone 1 to SAT:
0x21 0x01 0x0A 0x01 0x01 0x0D
a
uToMaTIon
I
nTegraTIon