DIAGNOSTICS Using the Diagnostics
10DEC05
DG4825-1
Page
16 of 180
Table 4 Tests
BUTTON Description
[Light Test]
Important
For the test procedure, see Light Test.
• Checks for excessive light to the PMTs during the
loading of a CASSETTE.
• Allows you to:
– actuate or deactuate the high voltage of the PMTs
– “AUTO-ZERO” the PMTs
• Tests the signal for noise.
[Slow Scan Current and
Velocity Tests]
Caution
• An increase in current might indicate that a bind is
occurring in the SLOW SCAN AY.
• For the test procedure, see Slow Scan Current and
Velocity Tests.
• Drives the SLOW SCAN AY to the limits in both
directions.
• Displays for the SLOW SCAN AY:
– speed variation
– current
– “Start of Scan”
– “End of Scan”
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