Ametek CEM/Humox, User Manual

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Controller/User Interface
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4-11
System Tests
This menu allows you to check the Series 2000 control unit for possible problems
and to isolate where the problem might be. You may be asked by AMETEK/Thermox
personnel to access this menu option to perform system diagnostics.
Performing these tests is not required under normal operations.
The following tests can be run using this menu option:

Calibrate A/D - Forces an A/D converter calibration. This is automatically done
during system start-up.

Test RAM - checks the functionality of the control unit’s internal Random Ac -
cess Memory (RAM).

Test Keyboard - tests that each key is functioning correctly.

Test EEPROM - tests the electrically erasable programmable read-only memory.

Module Detect - allows the control unit to check for the presence of option
modules. This test is used to ensure that the control unit is recognizing any
option modules you have installed into the control unit. This is automatically
done during system start-up.

Test Digital In - allows you to test the system digital input.

Erase RAM - allows you to erase all RAM memory locations.

Erase EEPROM - allows you to erase internal EEPROM memory locations if
your control unit is not operating properly. Be careful, though, because select-
ing this option will erase all settings in your control unit, and the default values
will be reinstalled.

Watchdog Timer - allows you to test that the watchdog timer and alarm circuit is
working properly. (See the “Watchdog Timer” section at the end of the Alarms
chapter for more information on the watchdog timer).

Serial output - Sends the string “Test Message” through the serial port until
stopped by the user. This is used to test communication settings and wiring.
•
Read Memory Location - This is used to view internal software variables used
for system operation and troubleshooting.
NOTE
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