User`s manual

Keyboard Interface Problems
Installation of the reader is generally trouble free, but there are some things to
watch for if you are experiencing problems.
Do you have the proper cable?
Most modern computers and terminals use a PC/XT/AT-compatible keyboard.
However, the cable connecting it to the keyboard port may have variations
in either the signal pins or the connector itself. Make sure that you have the
proper cable for the computer/terminal with which you are interfacing.
Does the keyboard work?
Since the data from the keyboard must pass through the reader, the cabling
connections are not correct if the keyboard is not operational.
Can the host computer accept the data fast enough?
Some computers and terminals are expecting the data rate from the keyboard
port to come in at a keystroke rate, and might not be able to accept it as fast
as the reader is transmitting. Try adjusting the intercharacter delay to simulate
the effects of keystroke delays.
Does the keyboard port supply enough power?
Most computers supply enough power to the keyboard port to operate the
reader. Occasionally you will fi nd keyboard ports that supply only a very
limited amount of power. See if the LED is lighting at full intensity; a lighter-
than-usual green (or a red showing as orange) could indicate a “low power”
condition.
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