User's Manual

NOMAD™ - LK3A-2
OPERATING INSTRUCTIONS
PAGE 4 of 9
1. INTRODUCTION
The LK3A-2 link unit is a remote transceiver for the NOMAD system. Its
purpose is to provide the radio link to wireless NOMAD terminals.
Several of these link units can be connected to the same controller via a
single twisted pair cable. Each link unit is powered from a 12V DC supply.
2. SPECIFICATION
Power 10-18V DC
Average Consumption 100mA
Radio link
Frequency 916.5MHz
2.1 CERTIFICATION
This device complies with part 15 of the FCC rules. Operation is subject to
the following two conditions: (1) this device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
2.2 CABLE LENGTHS
2.2.1 12V DC POWER CABLING
When fitting the link unit ensure that the voltage at the link unit is in the
range 10 to 18 V DC. Voltage drop between the power supply and the link
units will depend on the cable used and the number of link units connected
to a single power supply.
The following table gives maximum cable lengths for some common
configurations. Note that the cable length is from the power supply to the
farthest link unit for a single cable run. It would be normal practice to make
two or more cable runs from a single power supply (in different directions).