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50 of 66 Maintenance and Troubleshooting - 3654 Portable H2/N2 Analyzer
Operator Manual
ORBISPHERE
6.5 Troubleshooting - Instrument
If your analyzer is behaving strangely (failing to calibrate, giving inappropriate
measurement values, etc.) and you have attempted to rectify the problem by servicing
the sensor (for instructions, see “Sensor Maintenance” on page 43) but to no avail, you
may wish to use the WIN3654 Troubleshooting menu to make sure that the instrument
is configured correctly for your application, and is in good working order.
The instrument must be connected to your PC and placed in measurement mode to
perform these tests.
6.5.1 Serial Test
Normally, the instrument will inform you of a disconnected RS-232 (serial) link when
appropriate. However, you can confirm a good connection using the Troubleshooting,
Serial Link Test by echoing a test message via the instrument.
6.5.2 Keyboard Test
Enter text characters in the Text to be sent box, then
click Send. If the serial link is operating correctly, the
exact same text will be displayed back from the
instrument in the Echo box.
Any difference in text indicates a possible problem with
the serial communications.
Choose Cancel to exit from this test box.
The Troubleshooting, Keyboard Test will reveal
whether all the analyzer buttons are functioning
correctly.
Press any one of the instrument's buttons (except
the on/off button) for a full second or more. The
appropriate square on-screen should darken (as
illustrated for the Down Arrow button).
Choose Cancel to exit from this test box.