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11.1.7
Error Messages during Normal Operation
If an error (e.g. math error) occurs during normal operation, the DewK auto-
matically goes into a safe state, switching off the offending sensor. The internal
memory of the DewK is cleared of the sensor's information to try to prevent the
error from recurring.
NOTE: The ID and calibration parameters stored in the sensor should not be af-
fected. Only the memory of the DewK is cleared, not the memory of the sensor.
An error message and important troubleshooting information will be displayed.
Record all error messages and information displayed. This information will
help the Service Center in troubleshooting and solving the problem that has oc-
curred. Without this information, it can be difficult to find the cause of the
error.
Before contacting an Authorized Service Center for assistance, the following
steps can be followed to restore normal operation of the DewK:
1.
Disconnect the sensors.
2.
Switch the DewK power off; wait 10 seconds.
3.
Switch the DewK power on and wait until it is ready.
4.
Connect the sensors.
5.
Enable measuring on the sensor if it was disabled.
6.
Check the ID and calibration parameters of the sensors.
11.2
Downloading Recorded Data
The thermo-hygrometer stores up to 400,000 readings in its memory. These
readings can be downloaded to a computer using the RS-232 serial port.
The following steps should be followed to download logged data using the se-
rial port:
1.
Connect the thermo-hygrometer to a COM port on the computer using
the serial cable.
2.
Run a terminal program such as Windows(r) Terminal or
HyperTerminal(r).
a) Set up the terminal program to use the correct COM port and baud
b) If you want to save the downloaded data to a file, configure your ter-
3. Begin downloading the data.
rate. Configure the communication settings to use 8 data bits, 1 stop
bit, no parity and no flow control.
minal program to capture the incoming text and save it to a text file.
Refer to your terminal program's documentation for details on how to
do this.
11 Troubleshooting
Downloading Recorded Data
141
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