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QTERM-IV/P40 User's Manual
Beijer Electronics Fax 801-466-8792 Web www.beijerelectronicsinc.com Phone 801-466-8770
key can also be programmed to return an unshifted and
shifted release character or string.
6.3.3
Digital Outputs, dig0 and dig1
The QTERM-P40 has two programmable digital output bits
(dig0 and dig1) which can be used to control external
devices. (Note that these are not available on the EIA-422
version due to lack of connector pins.)
Software commands can be used to set these lines high or
low, or to have one or both function as an external buzzer
or horn signal. Both lines are 74HC bus-driver outputs and
can sink or source up to about 20 mA of current at 0 or 5
volts, respectively.
If either dig0 or dig1 is programmed to act as an external
buzzer signal, it acts as an enable signal: when the line is
low (0 volts), it should shut off the external buzzer or horn;
when the line is high (5 volts), it should turn on the external
buzzer or horn. These lines should only be used to drive an
external transistor which in turn drives the external buzzer.
6.3.4
Buzzer
The QTERM-P40 includes an audio buzzer, which is used
for key clicks, for beeping in response to a “bell” character
(^G, 07h) and for programmable-duration buzzing.
For applications in environments that are too loud for the
buzzer to be heard, the digital outputs (described above)
can be programmed to trigger an external device when
buzzer commands are received. (These signals are not
available on EIA-422 units due to lack of connector pins.)
6.3.5
Regulator Operation
The QTERM-P40 has a built-in 5 volt regulator. This
allows the QTERM-P40 to be operated from a 5.5- to a 24-
volt SELV, DC source. The power supply should have a
current limit on its output of 5 Amperes. Limiting may be
inherent to the supply or may be provided by supplemen-
tary devices. If you have a regulated 5 volt source to power
the terminal, then you can disable the regulator using the
dip-switches. Dip switch settings are shown in Figure 6-5.
6.3.6
Auxiliary Serial Port Option
If you ordered the auxiliary port option with your QTERM-
P40, you have an additional connector. This is a DB9 con-
nector, which exits from the top of the rear of the case, and
is labeled AUXILIARY PORT (see Figure 6-1).
Table 6-2 shows the pin assignments for both the panel-
mount and handheld connectors. The handheld DB9 will
mate directly with the DB9 male on an HP SmartWand bar
code reader.
The auxiliary serial port operates at 1200 baud with a data
format of 8n1. The QTERM-P40 host port must operate at
1200 baud or faster when using the aux port option. This
serial port does not support XON/XOFF handshaking.
6.3.7
The EEPROM Disable Jumper
Figure 6-4 shows the location of the EEPROM disable/
enable jumper. This is shipped in the enable position,
which allows the EEPROM to be modified with QDATA
downloads or the Save Parameters to EEPROM command.
If you do not want the EEPROM to be modified under any
conditions, move this jumper from the enable to the disable
position. This will prevent any writes to the EEPROM,
including downloading of QCODE or QDATA files.
Table 6-2: Aux Port Connector Pin
Assignments.
Handheld
DB9
Panel-Mount
2 mm
Function
2
3
9
7
1
3
5
6
receive
transmit
5 volts DC
ground
Figure 6-5. Dip Switch Settings for the QTERM-
P40
