TriCoder Portable Bar Code Reader, Руководство пользователя

Страница: 66 / 245

6-18
Intercharacter Delay
None 0
Short Delay 1
Medium-short Delay 2
Medium-long Delay 3
Long Delay 4
(This does not apply to USB. It rarely applies to serial.)
•
Use Computer Interface setting 8 for Learning Mode whenever
possible. This allows the TriCoder to figure out the timing on its own
and set it in the EEPROM for you. Don’t try this parameter unless
Learning Mode fails.
•
Intercharacter Delay is a setting that allows the TriCoder to match the
keyboard timing on your PC. Most computers work fine with no delay
at all, but due to the variety of BIOS and clock speeds, some PC’s may
need a timing delay.
•
The best way to determine whether you need to program a delay or not
is to start at setting 0 (None). Try reading a bar code in NON
PORTABLE mode while connected to your computer. If your data
transmits with no problems, leave your delay at 0. If you have garbled
or missing data, try each delay starting with 1 until you have complete
and correct data. Between setting changes, try typing on your keyboard
to make sure you still have correct characters coming from your
keyboard. In some instances, you may need to re-boot the computer
between delay setting changes.
•
Intercharacter Delay settings are generally for Keyboard Wedge mode
but will work in Serial Mode (usually only if using PortKey and
emulating keyboard data). Garbled data in Serial Mode is usually
the result of the wrong Baud Rate or Parity setting. Check these
first before you start changing the Intercharacter Delay.
Speaker / Batteries
Speaker ON 0
Speaker OFF 1
Alkaline Batteries or Alkaline Rechargeables 2
Nickel Metal Hydride or NiCad Rechargeable Batteries 3
•
If you are using the headphones in a noisy environment, you can conserve
battery power by turning the Speaker OFF (1). You control the volume of
the headphones by adjusting a variable resistor inside the TriCoder’s case.
See Appendix F: Jumpers, Switches, and Adjustments.