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Appendix F
Jumpers, Switches, and Adjustments
There are two switches inside the battery compartment of the TriCoder. One is
the Laser Decode Light Switch and the other is the Printer/Serial Y Cable
Switch. To get to these switches, you must open the battery compartment and
look for the switches on the visible board edge. Refer to the below diagram:
For the Laser Decode Light Switch, the switch must be on the W setting for
the older "switch wands" to work. The W setting also allows lasers and
CCDs to work, but the decode light (green light turning on for 3 seconds to
signify a “good read”) will not come on unless the switch is moved to L. It
is set to L by default.
The Printer/Serial Y cable switch allows you to use a portable printer or a
serial Y cable (not common) with the TriCoder. By default, the switch is set
for printer P. If you must use a serial Y cable , you must move the switch
towards the L.
To do any of the following operations:
1. To change the lithium battery,
2. adjust the headphone volume,
3. set the TriCoder to recharge batteries with the 5v power supply
plugged in,
4. force DTR to high,
5. to change from Serial to Keyboard Wedge, or
6. to change Keyboard Wedge to Serial,
you must remove the four screws from the back of the TriCoder using a
Phillips head screw driver. Open the case and lay it out as shown on the
following page:
