Mark Levinson RS-232 User Manual
No320S preamplifier
RS-232 control guide
1
Overview
Overview The Mark Levinson No320S preamplifier is equipped with an RS-232
control port. A complete set of command inputs and status outputs allow control of
the No320S by an external control system (such as AMX or Crestron). This guide
contains connection details and the RS-232 command list.
Contacting
Technical
Support
Phone
860-346-0896
9am to 5pm EST Monday thru Friday
Fax
860-347-6251
Please allow 24hrs for reply
Email
madts@harman.com
Please allow 24hrs for reply
2
Connection
RS-232 Port
Location
RS-232 control is through an RJ-11 connector located on the back of the No320S next
to the IR output. This connector has 6 pins of which only three are used for
communication.
RX TX GND
RS-232 Port Pin
Configuration.
The No320S will receive control data on pin 2 Data Receive and transmit status data
on pin 3 Data Transmit. The connection Cable between the No320S and the control
device will need to be configured so that the No320S’s receive is connected to the
control devices transmit. Please refer to the product owner’s manual for the control
device you are using for RS-232 port type and configuration.
Pin 2 Rx from the PC / Data Receive
Pin 3 Tx to the PC / Data Transmit
Pin 5 Digital system ground
3
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