Polycom EF2280 manual Connecting Multiple Vortexes, Terminating the Vortex

BUILDING YOUR SYSTEM WITH MULTIPLE VOR-

CONNECTING MULTIPLE VORTEXES

Up to 8 Vortexes can be linked together at one time. Each unit in the chain must have a unique Device ID. Use the EF Bus to link multiple Vortexes together.

The following steps should be followed to connect the EF Bus:

•Connect the RS-232 remote control device to the first Vortex in the chain.

•Connect the provided Cat-5 cable between the EF BUS OUT of the first device, and the EF BUS IN of the second device.

Note. The EF Bus must be connected so that the EF Bus In of one

box is connected to the EF Bus Out of another. Connecting the EF Bus In to another EF Bus In (or Out to Out) will not work.

•Connect another Cat-5 cable between the EF BUS OUT of the second device and the EF BUS IN of the third device, and so on.

•Terminate the chain of Vortexes using the instructions below.

Terminating the Vortex

The Vortex must be terminated with the provided EF Bus terminator. Place a termina- tor in the EF BUS IN of the first device in the chain and also in the EF BUS OUT of the last device. If you lose the terminator provided with your Vortex unit, see “Making an EF Bus Terminator” on page 45 for information and instructions on how to make one.

© Polycom, Inc. 7 Vortex® Applications and Presets Guide