Broadata Communications 272E Series - Manual (Page 12)

BCI 272E User’s Manual
Digital Fiber Optic Video/Audio/Data Transport System
Broadata Technical Support, [email protected] 13
RS-422 differential serial data
The 272E transmits differential data signals compatible with Full
Duplex RS-422 electrical signals. Note that RS-422 option is
factory set. The RS-422 does not support handshaking
control signals. Use the following steps for data transmission.
1. For the near-end, label and connect one serial computer
data cable to the user’s RS-422 device.
2. Connect the other end of this cable to the front panel RS-422
terminal block connector on the 272E.
3. At the far-end, label and connect one serial computer data
cable to the remote RS-422 device.
4. Connect the other end of this cable to the front panel RS-422
terminal block connector on the far-end 272E unit.
Figure 2-6
RS-422 Terminal block pinout
Figure 2-7 shows pin connections between the 272E unit (as a
DCE unit) and the user’s RS-422 device (as a DTE unit).
IN OUT
RS-422
_
+
_
+