Bird Technologies Group 61170A Manual De Usuario
TX RX Systems Inc. Manual 7-9469-1.7 02/08/10 Page 5
Channel Module
The channel modules are bi-directional with each
module containing one downlink branch and one
uplink branch. The branches are functionally identi-
cal because the same set of circuit boards are
used in each branch. The uplink and downlink
branches may be programmed to any frequency in
the appropriate band, 450-470, 470-491, or 491-
512 MHz. It is not recommended to program an
uplink and downlink to the same frequency or feed-
back may occur. Within the channel module, input
signals are down converted, digitized, and DSP fil-
tering is performed. Then the analog signal is rec-
reated and up converted to the original frequency.
module containing one downlink branch and one
uplink branch. The branches are functionally identi-
cal because the same set of circuit boards are
used in each branch. The uplink and downlink
branches may be programmed to any frequency in
the appropriate band, 450-470, 470-491, or 491-
512 MHz. It is not recommended to program an
uplink and downlink to the same frequency or feed-
back may occur. Within the channel module, input
signals are down converted, digitized, and DSP fil-
tering is performed. Then the analog signal is rec-
reated and up converted to the original frequency.
OPERATION
Power is applied to the channelized booster by
plugging in the AC or DC power cord (depending
on how the system was configured for input
power). There is a Power-ON LED located on the
front of the unit (near the user interface connector)
which will illuminate when power is applied to the
cabinet. The ventilation fans at the rear of the cabi-
net will be continuously on when power is applied.
plugging in the AC or DC power cord (depending
on how the system was configured for input
power). There is a Power-ON LED located on the
front of the unit (near the user interface connector)
which will illuminate when power is applied to the
cabinet. The ventilation fans at the rear of the cabi-
net will be continuously on when power is applied.
Module LED’s
There are six LED indicators on the front of each
channel module, 3 for the uplink branch and 3 for
the downlink branch. The function of each of these
indicator LED’s are listed in Table 2.
channel module, 3 for the uplink branch and 3 for
the downlink branch. The function of each of these
indicator LED’s are listed in Table 2.
Downlink XXXX MHz
Uplink XXXX MHz
Downlink XXXX MHz
Uplink XXXX MHz
Downlink XXXX MHz
Uplink XXXX MHz
Downlink XXXX MHz
Uplink XXXX MHz
Downlink XXXX MHz
Uplink XXXX MHz
6-Way Power Divider
3-16676
6-Way Power Divider
3-16676
Active Combiner
3-22318
Distribution
Amp
3-22340
Distribution
Amp
3-22340
Control Module
Power Supply
To All
Channel
Modules
Modules
+28VDC to
Channel
Modules
Modules
Active Combiner
3-22318
From
Filters
To
Filters
To
Filters
From
Filters
Power
Source
Figure 3: Functional block diagram of the standard channelized signal booster.
Five channel system shown as an example.