PerkinElmer Photovac 2020, Manual

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Troubleshooting
143
information to a computer store where a
suitable adapter may be obtained.
TXD
RXD
DTR
GND
Figure 25 Printer Cable Configuration
Cause: Printer is not configured properly.
Action: Many printers have a set of configuration
(DIP) switches. Generally, these
instruments expect these switches to be set
in the factory default settings.
Many printers have switches for enabling
automatic line feeds when receiving a
carriage return. These switches should be
set to carriage returns only, which is
normally the factory default setting.
Some printers have switches or control
panels that enable you to set the printer for
different modes, such as sans serif, letter
quality, or compressed text. Do not use
these controls. If you do use them, you may
cause your tabular or graphed output to be
printed incorrectly.
Problem: Data are printed or downloaded correctly at first but
become garbled.
Cause: Baud rate may be set too high.
Action: Ensure the baud rate of the printer is set to
9600.