M2 User's Manual V 1.0 Revised 4/21/2003
Page 11
2.2.9. RS-232 Hardware Configuration:
RS-232 serial interface for control and configuration of the M2. Port settings are 9600 baud,
No Parity, 8 Bits, 1 Stop Bit. NOTE: 115.2k baud rate is a factory set option. This port is
designed for communication with a local user or controller over a short reliable interface.
No error detection scheme is implemented over this interface. All command characters and returned
information are in ASCII format. When connected properly, the system prompt M2> will be returned.
Rx
Receive
Tx
Transmit
COM
Ground
2.3.
M2.1 Enhanced Configuration and Features:
The M2.1 is the base model of the M2 family. All configuration and features for this model are covered in
Section 2.2.
2.4.
M2.1+1 Enhanced Configuration and Features:
The M2.1+1 offers all the configuration and features of the base system with the addition of a second
independent balanced stereo audio output and associated start contacts. Controls for channel 1 are
denoted by CH1.
2.4.1. CH 2, Audio Out:
Two, three terminal pluggable connectors.
L -
Left audio output, inverting
L
Left audio output ground
L +
Left audio output, non-inverting
R -
Right audio output, inverting
R
Right audio output ground
R +
Right audio output, non-inverting
M2 supports balanced audio output. If unbalanced(single ended) is desired, use audio output non-
inverting and audio output ground.
2.4.2. CH 2, Audio Level Adjust:
Two potentiometer to adjust playback level of the left and right channels individually.
Range is continuous from -infinity to +4dBm.
