Runco Q-750d Ultra Series Installation & Operation Manual page 48

Installation
RS-232 Connection: Connect the Display Control output from the DHD Controller to
the RS-232 input on the Q-750d Ultra. Use a standard, modular telephone cable with
RJ11 plugs at both ends. On the Q-750d Ultra end, use the provided RJ11-to-DB9
adapter. This adapter is wired as shown in Figure 3-11.
4
To/From
3
DHD
Controller
2
1, 5, 6
6-position
RJ-11 Male
6
1
Figure 3-11. RS-232 Connection from the DHD Controller to the Q-750d Ultra
XMT DATA RCV DATA
RCV DATA XMT DATA
SIG GND
NO CONNECTION
32 Q-750d Ultra Series Installation/Operation Manual
RS-232
RS-232
3
2
5
1, 4, 6,
7, 8, 9
DB-9 Male
1
6