Worth Data 701 RF manual Relay ID and Channel…, Testing the Relay

hears it, it answers with the message:

Relay n Cannot Be

Heard by the Base

Notify Supervisor

Press Any Key

At this point, it is up to the operator to notify someone that the Relay is not communicating with the Base and to check the cabling first. There

is no message sent to the host, so it is very important that the operator that receives this message notify someone immediately.

Because relay cabling is often troublesome, we supply a test cable for isolating the user-made cable from the process. This test cable is so short that it doesn’t follow the rules of twists on the previous page – it is just a Ethernet patch cable for node, but adequate for testing the relay.

HINT: Use the suggested wire type, and if you’re doing your own crimping, be sure to use the expensive metal crimpers ($100) and not the cheap plastic crimpers ($15). Get someone familiar with making network (Ethernet) cables, but be sure to tell them not to use the Ethernet pin outs for the Relay Stations, (it has been tried more than once!).

Testing the Relay

To test communication with a Relay, first check out the radio by doing a Site Test on the offending Relay with all other Relays and Bases OFF. To check if a Relay is working with a Base Station, set the Base to a different channel than the Relay and set the Terminal channel to match the Relay channel. Then cable-connect the Relay to the Base (unlabeled port to unlabeled port.

Start your application on the host or use one of our demo programs provided with the Terminal (it’s a good way to test) - it takes 10 or more seconds for the Terminal to switch to the Relay. The delay is a result of the Terminal having to put out a "who can hear me" message when it doesn't get a response from the Base Station. The Relay responds to the Terminals "who can hear me" message and communication is established through the Relay. You will notice slightly slower throughput when working through the Relay.

Relay ID and Channel…

Relays should be set to the same channel as the Base station and R/F Terminals that you will be using in your system. Determining the current channel is the same as on the Base station; power up the Relay and count the number of times the LED flashes (channel + 3). The default setting is channel 0 (3 flashes). Each Relay also requires a unique Relay ID; the default ID is 0. A Relay will blink yellow; a Base blinks green.

To change the Relay channel, you must open the Relay case.

B-4