Fluke Biomedical 07-444 - Manual (Page 44)

Nuclear Associates 07-444
Operators Manual
7-2
7.3 Displayed Error Messages
Refer to Table 7-1 for a description of error messages that may be displayed during operation or setup of
the Densitometer.
Table 7-1. Displayed Error Messages
Message Description Corrective Action
Low Battery Battery voltage is below threshold;
unit will not operate. Replace batteries.
DSR Invalid DSR line (DTR from computer)
indicates that the computer is not
ready to accept data. Check that DTR line from computer is
connected properly.
Disable DSR via Setup Program.
Scanning Halted Scanning process halted for one of
following reasons:
- Text on film edge.
- Jerky movement of film through
Densitometer.
- Improperly positioned step
wedge on test film.
- Very dim marks on the test film.
- Missing marks above steps on
test film.
Slide film in edgewise to prevent text
from passing over the measurement
area.
Smooth movement of test film through
densitometer.
Check that distance from edge of film to
center of step is 16.1 mm.
Increase exposure of test film.
Check that test film is properly marked.
Too Many Marks More than 21 step marks detected. Check that test film is properly marked.
Invalid Data One or more of 22 readings is
greater than 4:005.
B + F value = 0.00
The relative speed is not
calculated.
The average gradient is not
calculated. Determine incorrect value by viewing log
file (X.XX indicates an erroneous value).
NOTE: If any of 22 readings are above
4.00, the relative speed and average
gradient are not calculated.
Couldn't resolve 21 steps could not be identified for
one of the following reasons:
Jerky movement of film through
the densitometer.
Improperly positioned step
wedge on test film.
Repeat the scan
Smooth movement of test film through
Densitometer.
Check that distance from edge of film to
center of step is 16.1 mm.
Timed Out Film not read within 20 seconds. Position film and take reading within 20
seconds.