![Avocent Emerge EMS2000 series Installer/User Manual Download Page 34](http://html.mh-extra.com/html/avocent/emerge-ems2000-series/emerge-ems2000-series_installer-user-manual_3033057034.webp)
26
Emerge EMS 2000 series Installer/User Guide
2
Transmitter
<AV PORT 23B>
<AV PORT 14A>
1
2
4
A
B
Primary
Transmitter
1
1
2
3
A
B
14A
14B
23A
23B
4
3
Transmitter
Receiver
Receiver
Serial port switching
The Emerge EMS2400T module uses a sophisticated switching system to extend the ordinarily
point-to-point nature of serial communications across a network of connected display units. The
system allows you to communicate with any display individually or to broadcast commands across
the network as a whole. When switching to a single display, it is then possible to receive responses
back from that display. When ‘broadcasting’ to all, it is only possible to send commands in a uni-
directional manner (such as ‘on’ and ‘off’).
A simple system of ASCII commands is used to effect the switching. You can issue such
commands directly via an ASCII console or use a utility such as the Display Manager to provide
an intuitive graphical interface. Once a switching command is issued, the network will remain
fixed at that setting until a new switching command is sent, therefore there is no need to precede
every RS232 command with a header sequence.
Port switching commands
The ASCII port switching command structure is as follows:
<AV PORT
>
ascade
[1 to 4]
ort
[1 to 4]
isplay
[A, B or X]
Note: The command must use capital letters
and there must be a space between ‘AV’ and
‘PORT’, and also between ‘PORT’ and the
cascade number.
The primary transmitter is
automatically numbered as
Cascade
1
, with successive cascaded
transmitters taking numbers
2
to
4
.
The
Port
number is determined by
the link cable port on the transmitter
to which a given receiver is
connected. The Display character is
determined by which of the
Y-cabl
e
connectors is used (X opens a one-
way link to both displays). If no
Y-cable is used, a single display will
be
A
.
To connect with all displays, issue the
following command:
<AV PORT ALL>
Summary of Contents for Emerge EMS2000 series
Page 1: ...Emerge EMS2000 series Installer User Guide ...
Page 6: ...iv Emerge EMS 2000 series Installer User Guide ...
Page 8: ...vi Emerge EMS 2000 series Installer User Guide ...
Page 42: ...34 Emerge EMS 2000 series Installer User Guide ...
Page 47: ...39 ...
Page 48: ...For Technical Support www avocent com support 092108 00UG ...