Chapter 4
P12×1-SP Installation, Configuration, and Operation
86
Copyright © 2004-2007, 2008, 2010, Harris Corporation
X-Y Control
of Remote
Router via
Modem:
LXYTO4800
(Special 4800
or 9600 Baud
Rate)
Use the LXYTO4800 to allow remote control of a Harris router using Harris X-Y
control panels. In this application, the P12×1-SP translates from X-Y protocol to
the RS-232 required by the modem. The LXYTO4800 does not communicate with
the modem; it expects the modem connection to look like a “wired” connection.
The LXYTO4800 configuration should not be used when a dial-up connection is
required, unless the modem pairs hide this function from the LXYTO4800.
The LXYTO4800 supports all functionality of pass-through protocol. The features
supported are listed in
Table 4-14
.
References
The following reference was used for implementing the protocol translation:
Routing Switcher Serial Protocol Reference Operation and Reference Manual,
Edition D (May 2004), Leitch Technology, Chesapeake, Virginia
Table 4-14
Pass-through Protocol
Protocol Command
Description
Direct Crosspoint Take
Switches a Source to a Destination on the
Level(s) requested
Request Preset Crosspoint
Status On Level
Returns the status of a Destination on the
Level(s) requested
Protect / Unprotect
Protects or unprotects a requested Destination
on the Level(s) requested using the Panel/
Device ID requested
Lock / Unlock
Locks or unlocks a requested Destination on
the Level(s) requested using the Panel/Device
ID requested
Preset Crosspoint
Presets the Take of a Source to a Destination
on the Level(s) requested
Clear Presets
Clears all Presets previously entered but not
yet executed
Execute Preset Buffer
Takes/executes all Presets previously entered
Request Preset Crosspoint
Status
Looks through all previously entered Presets
for the Destination and Levels requested, and
returns the status of any Preset that affects
that Destination and Level
Frame Size
Reports the highest valid Destination number
and source number for a Level (appears in
response to a Frame Size Request command)
Frame Size Request
Requests the highest valid Destination number
and Source number for a Level
