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RF Neulink
NL6000 User Guide
44
8.2.4. Use a Fully-Wired RS-232 Cable
Some RS-232 cables, especially those hand-made, may not have all of
the flow control wires connected. If your application supports hardware
flow control (RTS/CTS), then ensure that the cable connecting the
NL6000 to the host device has all of the wires connected. Refer to section
4.3.
8.2.5. Use a Slower Baud Rate
If the input baud rate is higher than the over-the-air bit rate, long strings of
data are going into the serial port, and flow control is not used, the
NL6000 buffers may fill up and lose data. Lower the NL6000s baud rate
and the host device baud rate to as slow as practical.
8.2.6. Use a Faster Baud Rate
If system time-outs, caused by a remote site not responding fast enough,
are a problem, you may consider increasing the serial baud rate at both
ends of the radio link. High baud rates along with hardware flow control
should yield a fast, reliable system.
8.2.7. Unit Does Not Enter Programming Mode
If you forget what baud rate the NL6000 is set to, you will not be able to
get into the programming mode with the /// command without trying all
baud rates on your terminal. Instead, if you enter three break characters
within 10 seconds on the terminal, the modem goes into programming
mode at 9600 baud. From this point you can reset the baud rate with the
Baud Rate
parameter on the Serial menu.
Make sure you use a cable that connects RTS and CTS from the modem
to the computer, not just RX and TX. You need this cable connection
before trying the three break characters that enter programming mode.