Thermo Scientific DSP2 Installation And Operation Manual page 44

QA TEST
The Test hard key can be used to access a QA test menu. This can be configured to record QA test occurrences separately from
normal rejects, etc. The system can also be configured to request that the unit be tested. In this mode an interval is set, for
example 4 hours. When the interval has expired the test key light will turn on and the unit will expect to be tested. An operator
would then press the test key entering the test mode and perform a prescribed test routine. For example: this may require 10
detections of a certain peak signal to be considered a valid test. Once the test is complete and passed, the test interval will be
reset. At the end of the next interval the test key light will turn on requesting another test routine.
While in QA Test all rejects will be recorded separately for use with DSP Net files. Also, while in QA Test, the detector will still
function and reject contaminant metal.
Normal mode
This button returns the unit to its normal inspection mode.
Test Mode
This initiates a test mode.
Clear Peak
This key resets the peak signal indication.
Setup
Setup provides access to configure a QA test routine.
Peak Limit
This number represents the maximum peak signal considered valid during a QA test. This is so that an invalid test sample, a coin
for example, cannot be used during a test. If the peak signal is exceeded the unit will not accept it as a valid sample. The peak
limit should be set above the peak signal generated by the specified test samples. For example: if the test sample you are
required to detect generates a typical peak signal of 200-250, the peak signal limit should be set at 300-350.
Interval
This is the number of hours required between test requests. For example, if set to four hours the unit will request a test after
every four hour period.
Required Detections
This is the number of valid detections which must occur during a QA test to reach a successful completion of the test.
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