7
Date Code 20070803
SEL Application Guide 2000-02
The FGR-115MB radio requires 12 Vdc power. The radio comes with a 120 Vac adapter, which
is handy for laboratory testing. A dc-to-dc converter will likely need to be supplied if the radio is
installed in a substation control building. For pole-mounted installations, as shown in Figure 1,
the SEL-351R Recloser Control can provide the 12 Vdc power.
I
NITIAL
C
HECKOUT
The easiest way to ensure that the relays are communicating is to use the target command, as
shown below.
=>
TAR ROKA <Enter>
LBOKB CBADB RBADB ROKB LBOKA CBADA RBADA ROKA
0 0 0 0 0 0 0 1
The result shown here is from an SEL-351S Relay. ROKA is asserted, meaning that the two
relays have established M
IRRORED
B
ITS
communications. For longer-term channel tests, use the
suggestions described in
Monitoring Radio Performance
.
E
QUIPMENT
L
IST
The following equipment list details the required components and connections, as shown in
Figure 1. A pole, tower, or other means of elevating the antenna is not shown.
Table 1: Equipment List
No. Item
Description
Approx.
Cost
1
900 MHz Spread-
Spectrum Transceiver
FreeWave Technologies, Inc.
1
Model FGR-115MB.
12 Vdc power, 1 W output, 10 mile line-of-sight,
120 Vac-to-12 Vdc adapter and 6' DB-9M-to-DB-9F
straight-through programming cable included.
www.freewave.com
(303) 444-3862
$1350
2
SEL-C285 cable
DB9M-to-DBM straight-through cable
$25
3
Yagi Antenna
FreeWave Technologies, Inc.
2
Model EAN0900YA.
10 dB, directional, 32" long.
$130
4
Low-Loss RF Cable
FreeWave Technologies, Inc.
3
Model ASC0504NN.
50' length (other lengths available).
$140
5 Fiber-Optic
Transceiver
SEL
4
Model SEL-2815M.
EIA-232 DB-9M-to-Fiber-Optic Transceiver.
$362
6 Fiber-Optic
Cable
SEL
4
Model C800FZST.
Terminated Cable, 25' or less (other lengths
available)
$115
7
Surge Protection
Northern Technologies,
Model QWS-920N
5
.
N Type M-to-F ¼ shorting stub coaxial protector
tuned for 870 - 970 MHz.
www.northern-tech.com
(800) 727-9119
$135
