Plessey EasyReach, User Manual

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EasyReach User Manual INSTALLATION AND COMMISSIONING
1H90941 11
Supply Connection
AC Power Version
Connect the unit to mains power using the supplied mains power cable.
DC Power Version
A mating connector is supplied for the connection of DC power.
The DC power option provides isolated positive and negative power terminals
and a chassis ground terminal. It is recommended that the ground rail of the
supply be connected to the chassis ground.
For example, if a -48V supply is used, the -48V rail will be connected to "-" and
the 0V rail will be connected to "+" and also to the chassis ground terminal.
RF Frequency Variants
EasyReach units come in two different frequency variants, and with
complementary transmit/receive frequencies for each variant. The frequencies
of the variants are listed in Table 1.
In setting up a radio link consisting of frequency variant 1 units, the unit at one
end of the link must be a 1a variant and the unit at the other end of the link must
be a 1b variant. Similarly, if frequency variant 2 units are used, one unit must be
a 2a variant and the other one a 2b.
Table 1 RF Frequency Variants
VARIANT TX FREQUENCY RX FREQUENCY
1a 2412 MHz 2452 MHz
1b 2452 MHz 2412 MHz
2a 2426 MHz 2464 MHz
2b 2464 MHz 2426 MHz