Meridian DSP420 General Information

Meridian DSP420 RS232 Interface.

General Information

The RS232 interface for the DSP420 can be operated from any terminal that operates at 9600 baud
with 1 start bit, 1 stop bit and no parity. Commands take the form of 2 ASCII characters, in some
cases followed by a signed argument ('nn' below). All characters are echoed by the speaker. A
carriage return character will execute the command and backspace is also implemented. When a
command is executed, the speaker will return 8 characters.
Basic Functions
The following tables list the basic commands available and show examples of the messages
returned. In each case the message retuned via RS232 corresponds with the display on the front
panel of the processor.
RS232 Command
CD
RD
LP
TV
T1
T2
CR
CB
DV
V1
V2
LD
RS232 Command
VP
VM
VNnn
MU
SB
POnn
BNnn
TNnn
LNnn
%inn
PHnn
Meridian Audio Limited, Stonehill, Stukeley Meadows, Huntingdon, Cambs PE29 6EX
Source Commands
Description
Select CD source
Select Radio
Select LP
Select TV
Select Tape 1
Select Tape 2
Select CDR
Select Cable
Select DVD
Select VCR 1
Select VCR 2
Select Laser Disc
Volume Commands
Description
Volume +
Volume -
Go to volume (1-99)
Mute
Standby
Position Setting, 0=Normal, 1=High, 2=Corner
Bass setting
Tilt Setting
Balance setting
Input 1=D1, 2=D2
Phase
Tel +44 1480 445678 Fax +44 1480 445686
http://www.meridian-audio.com/
DSP420 RS232
Information
Data from DS 6ii03
Message Returned
CD 65
Radio 65
LP 65
TV 65
Tape1 65
Tape2 65
CDR 65
Cable 65
DVD 65
VCR1 65
VCR2 65
LDisc 65
Message Returned
CD 66
CD 64
CD 87
Mute
Standby
Normal
B. +2.0
T. -3.0
L. +3
Input D1
Phase +