17-2
LaserSpeed Pro 8500-4 Instruction Handbook: Troubleshooting Guide
If using RS-232 over a
long cable, the baud
rate may too high.
Switch to RS-422 for
communications.
checked. Set the Hyperterminal
settings to match the following:
Do a loop-back test by discon-
necting the serial cable from the
LaserSpeed breakout DB9 and
short pins 2 and 3 of the cable to-
gether with a paperclip or screw-
driver.
You should be able to type on the
keyboard and see everything that
you are typing while pins 2 and 3
are connected. If no characters
appear on the screen, the cable or
computer serial port may be
faulty.
Change the baud rate of the PC to
a lower rate, or connect a shorter
cable.
RS-422 uses differential signals
that have much better noise im-
munity than RS-232. USB to RS-
422 converters are commercially
available.
The gauge is communi-
Terminal Settings
The gauge does not echo the
Summary of Contents for BETA LaserMike LaserSpeed Pro 8500-4
Page 8: ...iv LaserSpeed Pro 8500 4 Instruction Handbook Caution LS8500 4E Labels LS8500 4X Labels ...
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Page 298: ...14 8 LaserSpeed Pro 8500 4 Instruction Handbook Dimensions and Installation Drawings ...
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