4.2.2 CONNECTION TO A “DTE” DEVICE
The serial port on most QuickConnect™ interface modules (all
except the X.21 module) is hard-wired as a DCE. Therefore these
modules “want” to plug into a DTE such as a terminal, PC or host.
When making the connection to your DTE device, use a straight
through cable of the shortest possible length—we recommend 6 feet or
less. When purchasing or constructing an interface cable, please refer
to the pin diagrams in Appendix D as a guide.
4.2.3 CONNECTION TO A “DCE” DEVICE
If the Model 1090’s QuickConnect™ interface module is hard-wired
as a DCE (all except the X.21 module), you must use a
null modem
cable when connecting to a printer, modem, multiplexer or other DCE
device. This cable should be of the shortest possible length—we
recommend 6 feet or less. When purchasing or constructing a null
modem interface cable, use the pin diagrams in Appendix D as a guide.
Note:Pin-out requirements for null modem applications vary
widely between manufacturers. If you have any questions
about a specific application, contact Patton Technical Support:
(301) 975-1007; http://www.patton.com; or,
[email protected].
4.2.4 RECONFIGURING THE X.21 QUICKCONNECT™ MODULE
The serial port on the X.21 QuickConnect™ Module is default wired
as a DCE, but may be switched to a DTE. This is done by reversing the
orientation of the DCE/DTE strap, as described below:
To reverse DCE/DTE orientation, remove the module according to
the instructions in Section 4.2.1. The DCE/DTE strap is located on the
bottom side of the module’s PC board. The arrows on the top of the
strap indicate the configuration of the X.21 port (for example, if the DCE
arrows are pointing toward the DB-15 connector, the X.21 port is wired
as a DCE). Reverse the DCE/DTE orientation by pulling the strap out of
its socket, rotating it 180º, then plugging the strap back into the socket.
You will see that the DCE/DTE arrows now point in the opposite
directions, showing the new configuration of the X.21 port. Reinstall the
module according to the instructions in Section 4.2.1.
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4.3 CONNECTION TO THE POWER SOURCE
The Model 1090 is available with three power supply options:
The Standard power supply option (Model 1090 or 1090-230) is
factory configured for either 115 or 230 VAC, depending on how the
product is ordered, and is available with a variety of domestic and
international power cords (see Appendix C).
The Universal Interface power supply option (Model 1090-UI)
operates in environments ranging from 85 to 265 VAC, with no re-
configuration necessary (see Appendix C for available domestic and
international power cords).
The DC power supply option (Model 1090-DC) operates in 48 VDC
environments and is equipped with a 3-pin terminal block with spring-
type contacts (please refer to the Model 1090 Service Manual for wiring
instructions).
4.3.1 AC POWER CONNECTION
The two AC power supply options–Standard and Universal–are
equipped with a male IEC-320 power connection. A domestic (US)
power supply cord is supplied with the unit at no extra charge. To
connect the standard or universal power supply, follow these steps:
1. Attach the power cord (supplied) to the shrouded male IEC-320
connector on the rear of the Model 1090.
2. Plug the power cord into a nearby AC power outlet.
3. Turn the rear power switch ON.
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WARNING!
There are no user-serviceable parts in the power
supply section of the Model 1090. Voltage setting changes and
fuse replacement should only be performed by qualified service
personnel. Any questions may be answered by contacting
Patton Electronics Technical support at (301) 975-1007;
[email protected]; or http://www.patton.com.
