Thermo Scientific Orion 320, User Manual

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7-2 Thermo Scientific Orion 320, 350 and 370 PerpHecT
®
LogR
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Meter User Guide
Note:
Ensure that the shorting cap is securely attached to the BNC input
on the rear panel of the meter prior to the self-test .
1 . Disconnect all of the electrodes and probes from the meter and attach
the BNC shorting cap to the BNC input on the meter .
2 . Disconnect the power supply from the meter . Press and hold the yes
key and reconnect the power supply to the meter . After the meter
powers up for about five seconds, release the yes key . The meter should
automatically perform seven diagnostic tests .
3 . When 0 is shown on the display, press each key one at a time in any
order . A numeric digit will be displayed upon each keypress .
4 . After the self-test is complete, the meter will automatically proceed to
the measurement mode .
5 . If any problems are found during the self-test, refer to the meter self-
test operator assistance codes .
Test Function\Display
Test #1 Segment display checks meter display. Ensures that all segments are lit.
Test #2 RAM check verifies the proper operation of the Random Access
Memory.
Test #3 External input checks the electrode input channel. Electrode must be
disconnected and BNC shorting cap must be plugged in for this test.
Test #4 Ground reference checks the meter ground.
Test #5 Temperature reference checks the ATC reference.
Test #6 Internal reference checks the internal reference of the meter.
Test #7 Keypad test checks that the keypad is functioning properly. During this test all keys
must be pressed when the meter displays 0. As each key is pressed, a number
corresponding to the key is displayed. When all the keys have been pressed,
the ready icon will be displayed. If no keys are pressed or there is a
problem with a key, the meter will recognize an error and display E-07.
Press the yes key to continue.
Meter Self-Test