85

Corporation

SIGNAL PROCESSING EXCELLENCE

Two-Channel Duplex RS-232 &

One-Channel Duplex RS-422

Opposite Drivers

Two RS-232 line drivers and receivers, and a

single RS-422 line driver and receiver. At first

glance, this is the same configuration as that in

Figure 4. Note however that functions are acti-

vated on the opposite channels.

Two-Channel Duplex RS-422

Two RS-422 line drivers and two RS-422

receivers.

FIGURE 5: SP304 CONFIGURATIONS

RS-422 LINE DRIVERS

RS-422 RECEIVERS

SELECT A = 1

SELECT B = 1

LB = 1

RS-232 LINE DRIVERS

RS-232 RECEIVER

SELECT A = 1

SELECT B = 0

LB = 1

RS-422 LINE DRIVER

RS-422 RECEIVER