Bird Technologies 61-89A-50 Series-Installation Instructions - Manual (Page 7)

Manual 7-9362-2 Page 1 TX RX Systems Inc. 10/19/05
GENERAL DESCRIPTION
Signal boosters extend radio coverage into areas
where abrupt propagation losses prevent reliable
communication. No frequency translation (conver-
sion) occurs with this device. Signal Booster II (SB
II) is a broadband, bi-directional signal booster
available in a variety of configurations as shown in
Table 1. The product model number is used to
describe each configuration available. This manual
details the installation and operation of the 61-89A-
50-XXX-XX series of boosters.
The system can be ordered in one of three maxi-
mum gain configurations including Full Gain (+80
dB gain max), Medium Gain (+60 dB gain max),
and Low Gain (+45 dB max gain). The maximum
gain of the system is determined by the exact type
of cards plugged into the low and mid level slots as
shown in the block diagrams at the back of this
manual. The maximum gain of the uplink or down-
link branch is adjustable and can be setup inde-
pendently. In addition, the gain of each branch can
be reduced up to 30 dB in 0.5 dB increments via
software interface.
The bandwidth of the system is determined by the
passband of the input/output filtering. The filters
passband is determined by its physical construc-
tion so must be determined at the time of order. As
shown in table 1 the system may be ordered in any
of five different bandwidths including 18, 15, 10, 5,
and 3 MHz.
Three cabinet styles are available. The G1 suffix
denotes a NEMA-4 style cabinet which is suitable
for indoor or outdoor use. The G2 suffix denotes a
stainless steel NEMA-4X style cabinet suitable for
corrosive environments such as salt air and the RM
suffix a rack mount version which is intended for
indoor mounting only.
UNPACKING
It is important to report any visible damage to the
carrier immediately. It is the customer's responsi-
bility to file damage claims with the carrier within a
short period of time after delivery (1 to 5 days).
Care should be taken when removing the unit from
the packing box to avoid damage to external heat-
sink fins. Use caution because the heatsink fins
can have somewhat sharp corners. Signal Booster
II (SB II) weighs about 85 lbs. so use enough peo-
ple when lifting the unit.
INSTALLATION
The following sections discuss general consider-
ations for installing the booster. All work should be
performed by qualified personal in accordance with
local codes.
Location
The layout of the signal distribution system will be
the prime factor in determining the mounting loca-
tion of Signal Booster II. However, safety and ser-
viceability are also key considerations. The unit
should be located where it cannot be tampered
with by the general public, yet is easily accessible
to service personnel. Also consider the weight of
61 - 89A - 50 - A18 - G1
(Example)
FAMILY FREQUENCY
BAND
MODEL COARSE
GAIN
BANDWIDTH ENCLOSURE
TYPE
60 =
61 =
612 =
1 Way
2 Way
2 Way
w/Fiber
Interface 89A = 806 - 824
851 - 869
50 = Signal
Booster II
A =
B =
C = 80 dB
60 dB
45 dB 18 = 18 MHz
15 = 15 MHz
10 = 10 MHz
05 = 5 MHz
03 = 3 MHz (NPSPAC) G1 =
G2 =
RM =
Painted, Nema4
Stainless, Nema4X
Rack Mount
Table 1: Model number designations. Model 61-89A-50-A18-G1 shown as example.
*
*
Note: Gain of 80 dB model set to 50 dB at factory. Please measure antenna isolation before resetting.
GAI
GAIN