Adding Relays - Worth Data 7100 RF Terminal Series Owner's Manual

Changing the Channel on a Base/Relay
The Base Station and its related Relays must have their channel set to the same channel as the RF Terminals in their network. The
channel is set on a Base or Relay by turning a rotary switch to the setting 0-5 (6 different channels to choose from). Use a very
small flat head screwdriver to turn the switch to the desired number. See the circuit board diagram on page A-1 for location of the
rotary switch.
Setting the Relay ID
Each Relay must also have a unique ID, which is set by the RF Terminal Serial Configuration Utility.

Adding Relays

Connecting a Relay Station
A Relay station allows you to extend the area of your RF coverage. Relays are connected by cable to the Base station, acting as a
remote antenna. More than one Relay can be added by "multi-dropping" additional Relays. Using a Relay requires changing the
setup on the Base station in addition to added cabling. The diagram below shows how Relays are added:
Although Relays will extend your RF range, they do slightly slow down your response time. If response time is your problem, Re-
lays may help only if the problem occurs on the outer limits of your range. Use Site Testing to help you determine if adding a Re-
lay will help. If you are considering Relays, read Chapter 4; Performance Issues first.
If adding only one Relay, the cabling should run between the "Relay" port on the Base station and the "Relay" port on the Relay.
In this example, both the Base Station and Relay should have jumpers set to "terminated".
To add additional Relays, you must "multi-drop" them off a single bus line running from the "Relay" port on the Base station. See the
section below for cabling requirements and pin-outs. It is very important to follow the pin-out directions carefully and to use the suggest-
ed cable type. The majority of problems we see are the result of incorrect wiring.
Each Relay requires it's own power supply. There is no serial parameter setup required on a Relay as it is transmitting only to the
Base station and not directly to a serial port.
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