Technical Support
4
Dual Stage Routing Systems
Installation Procedure
Follow the instructions in the matrix switcher’s
Instruction Manual
to install the enclosures in racks.
Follow the guidelines below to link the enclosures for control (communication) and to attach the inputs
and outputs.
Linking Enclosures
All of the enclosures in a DSR System
must
be linked together for control. As long as all of their
communication ports are linked, the order they are linked is not important. For example, the pre-stage
routers can be linked from one to another, and then the last one can be linked to the final-stage router
(see FIG. 1). Or in the case of two pre-stage routers, they can both be linked to the final-stage router.
Important:
When linking enclosures, be sure to attach 50 ohm termination connectors to the
open ends of all T-connectors.
Attaching Inputs & Outputs
The outputs on the pre-stage router(s) are connected to the inputs on the final-stage router. For
information on cabling specific types of connectors, see the router’s
Installation Guide
. When attaching
the input and output signal cables, refer to the sheet labeled “AutoPatch Connector Guide” shipped with
the product. The guide shows you where to attach each signal cable on the rear of each enclosure. (The
enclosure number is normally located on one of the expansion plates.)
Follow the guide exactly; the
system was programmed at the factory to operate only as indicated on the “Connector Guide.”
System Control
Available Inputs & Outputs
The number of inputs and outputs available for switching depends on the configuration size of the DSR
System.
Inputs = Total number of inputs used on all pre-stage routers, plus any inputs on the final-stage
router that are not connected to the outputs from the pre-stage routers
Outputs = Number of outputs used on the final-stage router
For example (see FIG. 1), a DSR system consisting of a 256x48 pre-stage, a 112x48 pre-stage, and a
96x48 final-stage has the following available for switching:
Inputs = 368 (256 + 112)
Outputs = 48
The 48 outputs from each of the pre-stage routers are connected to the 96 inputs on the final-stage router.
Control
For control purposes, the numbering of the inputs starts on the first pre-stage router and continues on
each subsequent pre-stage router. Therefore, enclosures in a DSR System are controlled as if they were a
single router. For example, on the 368x48 DSR System in FIG. 1, the first pre-stage router switches
Inputs 1 though 256 and the second pre-stage router switches Inputs 257 though 368.
Remember, additional input or output boards (besides the ones being used for DSR System routing) can
be included in the system but must be switched on separate virtual matrices (VMs) that were created to
do so.
