Murata Electronics North America 5811M Benutzerhandbuch
© 2003 Cirronet
Incorporated
27
M-5811-0008 Rev -
2. Start WinCOM running on both computers by double-clicking on the WinCOM icon. If
you prefer, almost any other serial communications program such as Procomm or
QModem set for 115,200 bps will also work.
QModem set for 115,200 bps will also work.
3. Turn the radios on and use the function keys to set DTR and RTS to 1 (if you are using a
terminal program other than WinCOM, these are typically set automatically). The radio
should respond by setting both DSR and CTS to 1, and transmit a short sign-on message
including the firmware version and whether the unit is configured as a base or remote.
Watch the states of the hardware control lines on the status bar as you do this. The DCD
indicator should be lit on the base station. After a few seconds, the remote unit will
acquire the base station's signal and also assert its DCD signal.
should respond by setting both DSR and CTS to 1, and transmit a short sign-on message
including the firmware version and whether the unit is configured as a base or remote.
Watch the states of the hardware control lines on the status bar as you do this. The DCD
indicator should be lit on the base station. After a few seconds, the remote unit will
acquire the base station's signal and also assert its DCD signal.
4. Access modem control mode for each unit. To access modem control mode, use the F1
key to toggle DTR to 0 and back to 1 and then press the F3 key, which sends the
":wit2400" escape sequence. If you are not using WinCOM, simply turn the radio off
and back on and then type ":wit2400" (must be lower case, no backspace characters).
The transceiver should echo back “
":wit2400" escape sequence. If you are not using WinCOM, simply turn the radio off
and back on and then type ":wit2400" (must be lower case, no backspace characters).
The transceiver should echo back “
>
” to indicate that you have entered modem control
mode. Check the remote unit's hopping pattern by entering "wn?" at the prompt. The
remote should respond with "0", the default setting. Check that the base station's hopping
pattern matches this by entering "wn?" at the base station.
remote should respond with "0", the default setting. Check that the base station's hopping
pattern matches this by entering "wn?" at the base station.
5. Exit control mode by entering "z>". Do this for both radios. At this point, you should be
able to type characters into either radio and see them appear at the other side. If you are
using WinCOM, you can press the F6 key to transmit a repeating test pattern.
using WinCOM, you can press the F6 key to transmit a repeating test pattern.
6. For a range test, disconnect the remote station from the computer and power supply. The
DCD indicator should remain lit as long as the base station is in range..
7. Exit WinCOM by pressing the ESC key.
6.3. Troubleshooting
Radio is not responding.
Make sure DTR is asserted to bring the radio out of sleep mode. DSR should be on to
indicate the radio is ready.
Can’t enter modem control mode.
Make sure the host data rate is correct. The WIT5811 defaults to 921,600 bps asynchronous.
Evaluation units do not have external access to the CFG_SEL signal; you must use the
:WIT5811 power-on escape sequence to access modem control mode. The first characters
typed after the radio wakes up should be the escape sequence. Make sure you type the colon
(:) and enter the letters in lower case; the characters following the colon echo to show you
have typed them correctly. If using the “on-the-fly” escape sequence command, make sure a
pause of at least 20ms precedes the escape sequence.
Remote never detects carrier.
Check that the base station is running, and that the remote is programmed to the same
hopping pattern. Also check that the hop duration for base and remote are the same, and that
the remote has a non-zero link margin.
Make sure DTR is asserted to bring the radio out of sleep mode. DSR should be on to
indicate the radio is ready.
Can’t enter modem control mode.
Make sure the host data rate is correct. The WIT5811 defaults to 921,600 bps asynchronous.
Evaluation units do not have external access to the CFG_SEL signal; you must use the
:WIT5811 power-on escape sequence to access modem control mode. The first characters
typed after the radio wakes up should be the escape sequence. Make sure you type the colon
(:) and enter the letters in lower case; the characters following the colon echo to show you
have typed them correctly. If using the “on-the-fly” escape sequence command, make sure a
pause of at least 20ms precedes the escape sequence.
Remote never detects carrier.
Check that the base station is running, and that the remote is programmed to the same
hopping pattern. Also check that the hop duration for base and remote are the same, and that
the remote has a non-zero link margin.