6637517A1 660-MISC-3311 Interface module

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. 4.5.4 Buzzer The QTERM-II 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.)The standard QTERM-II requires a 4.8- to 5.5-volt regulated, SELV, DC power source. An optional regulator allows the QTERM-II to be operated from a 5.5- to 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 supplementary devices.

Bar Code Option

 If you ordered the bar code option with your QTERM-II, you have an additional connector. On handheld units, this is a DB9 connector which exits from the same end of the case as the 6-pin modular connector; on panel-mount units, this is a 6-pin, 2 mm connector (see Figure 4-2). Table 1-2 shows the pin assignments for both the panel-mount and handheld connectors. The handheld DB9 female will mate directly with the DB9 male on an HP SmartWand bar code reader. The bar code serial port operates at 1200 baud with a data format of 8n1. The QTERM-II host port must operate at 1200 baud or faster when using the bar-code option. This serial port does not support XON/XOFF handshaking.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.

Adding Another PC Board 

If you are using a handheld or battery back QTERM-II, you can install an additional PC board in the back of the case. This board can be used, of course, for whatever purpose your application requires. Figure 4-6 shows the physical size of the printed circuit board, as well as the allowable component heigth. There are plastic bosses molded into the back of the case; you can use all or just some of these for mounting your PC board. The ones you do not wish to use can be easily clipped off. For the bosses that you do want to use, place a 3.2 mm diameter hole in your PC board. After the PC board is installed over the bosses, you can either press on a retainer snap ring (Eaton-Tinnerman part number T99220SS-67-01- 10780) or heat sink the bosses. 4.6 QTERM-II Specifications Table 1-3 lists various specifications for the QTERM-II. Note that all components of the QTERM-II, other than the display, will operate over the industrial temperature range of -40 to 85 °C. Table 4-4 lists current consumption of the various versions of the QTERM-II.

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