18
QTERM-R55 User's Manual
QSI Corporation Fax 801-466-8792 Web www.qsicorp.com Phone 801-466-8770
Connection to the panel-mount QTERM-R55 is made via a
6-pin 2 mm pitch header which is located on the PCB as
shown in Figure 3-5 (standard output).
3.3
QTERM-R55 Large Character Panel-
Mount Terminal
The dimensions of the QTERM-R55 large character panel-
mount terminal are shown in Figure 3-6. This terminal is
available with a 24-key or a 40-key keypad.
The housing is made from rugged glass-fiber filled nylon
plastic and is colored black. The housing is not waterproof,
but it can be subjected to moderate rain or splash without
harm.
The QTERM-R55 is mounted directly onto your instrument
or enclosure panel. Figure 3-7 shows the mounting cutout
required to install the terminal.The QTERM-R55 is
mounted to the panel via four angle brackets that attach to
the terminal with self-tapping screws that insert from the
rear of the bracket and screw into the bosses on the
QTERM-R55 enclosure. These brackets are designed so
they can be attached before inserting the terminal into the
panel. Once the brackets have been installed, the terminal is
inserted into the panel and the brackets are slid outward.
Then the screws are tightened and the brackets hold the ter-
minal in place. Screws and brackets are included with the
QTERM-R55; these are usable with panels up to about 10
mm thick. A gasket is provided to seal the outside edges of
the terminal where it presses against the panel. Connection
to the large character panel-mount QTERM-R55 is made
via the DB9 connector which is accessible on the back of
the terminal. The connector pin numbering is shown in
Table 3-2.
Table 3-1. Pin Assignments for PC-Style COM Ports.
COM Ports with Male DB25 Connectors
COM Ports with Male DB9 Connectors
Pin
Function
Pin
Function
2
PC transmit
1
CD *
3
PC receive
2
PC receive
4
RTS *
3
PC transmit
5
CTS *
4
DTR *
6
DSR *
5
ground
7
ground
6
DSR *
8
CD *
7
RTS *
20
DTR *
8
CTS *
22
RI *
9
RI *
*These lines normally can be left unconnected. Some PCs may require that one or more of them be pulled to 5 volts
through a pullup resistor (about 300 ohms)
F2
DEL
F1
<
7
4
+
>
ESC
1
-
-
0
F4
F3
8
5
9
6
2
#
3
*
QTERM - R55
Figure 3-3. Dimensions of the QTERM-R55 Panel
Mount Version.
