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