Allen-Bradley 1770-LDA Product Data page 2

2
Your line driver/receiver consists of:
a two-slot chassis with two integral 1770-P1 power supplies
two Line Driver Receiver Modules (cat. no. 1772-DR)
two Connectors (cat. no. 1770-XE)
The two-slot chassis assembly (figure 1) consists of:
card guides, card edge connectors, and locking tabs to support two line
driver/receiver modules
two integral power supplies
a terminal strip for connection of incoming 120 or 220/240V fused AC
power
a circuit breaker that also acts as a power switch to allow removal and
installation of line driver/receiver modules
Figure 2 shows chassis mounting dimensions.
The line driver/receiver modules provide the isolation, signal
amplification, and waveform squaring necessary to maintain satisfactory
signal levels over a 5000 foot cable length (figure 3).