User's Manual

2-9 Installation
DataNex EMS Wireless, DATA-20 Digital Radio
Table 2-1.DATA-20 4xE1/T1 MUX Data Channel Configurations
Chnl Data
Rate
4xE1
(BPS)
Data
Rate
4xT1
(BPS)
Data
Rate
2xE1
(BPS)
Data
Rate
2xT1
(BPS)
Data
Rate
1xE1
(BPS)
Data
Rate
1xT1
(BPS)
Inter-
face
1 2.048 K 1.544 K 2.048 K 1.544 K 2.048 K 1.544 K G.703,
DSX-1
2 2.048 K 1.544 K 2.048 K 1.544 K --- --- G.703,
DSX-1
3 2.048 K 1.544 K --- --- --- --- G.703,
DSX-1
4 2.048 K 1.544 K --- --- --- --- G.703,
DSX-1
* Aux1 128 K 96 K 64 K 48 K 32 K 24 K V.35,
RS449
* Aux2 128 K 96 K 64 K 48 K 32 K 24 K V.35,
RS449
ASYNC
Data
9600 7200 4800 3600 2400 1800 RS232
* AUX Channels 1-2 can be combined to form 2xCh.1 or 2xCh.2 (i.e., in 4xE1 mode, AUX could
be a single channel of 256 KBPS)
2.9 Hot Standby (Protected) Configuration
The DATA-20 may be installed in a hot standby (protected) configuration. This consists of
twoDATA-20 chassis with a TP64 transfer panel (Figure 2-5)
Transfer Panel Connection
The usual hot standby configuration uses an external duplexer. This minimizes RF losses and
provides independent TX and RX module switching. A duplexer should already be mounted on
the TP64 chassis. Alternatively, rack mounted duplexers (typical for tighter channel spacings)
may be provided. The connections are the same, although the physical location is different.
A power divider (used to split the signal equally to two receivers) is required in this mode. The
input to the power divider connects directly to the duplexer with an N-N (male) adapter.
See Figure 2-4 for installation details.