Gasboy 1000 Series Technical Reference Manual - Manual (Page 141)

Communications
03/07/03 6-3
The cable can be run indoors without the use of metal conduit. The shield drain
wire must be connected to the system AC ground.
If using cable other than that recommended above, the RS-422 field wires must
be installed in a metal conduit separate from any AC wires.
The maximum field wiring cable length is not to exceed 1500 feet.
Modem and
Cables
The RS-422 wiring diagram is shown in Figure 6-3. GASBOY part numbers for
the required short haul modem and necessary cables are also indicated. In the
example, Port 1 is connected to a data terminal and Port 2 is connected to an
external modem.
Figure 6-1. RS-232 Wiring - D Connector (P/N C05758)
(Requires Soldering in the Field)
Figure 6-2. RS-232 Wiring - GASBOY Termination Box (P/N C05769)
(Requires no soldering)