Revision 14
163 August 02, 2019
Triggered if the Optical Encoder no longer
receives any pulses when the tape is advanced
by the motor. Tape Movement and maximum
tape advance alarms may be triggered by the
same problem, so both should be analyzed.
Possible causes of a tape movement alarm
include tape br
encoder, and motor failure.
Triggered if the analyzer is unable to adjust the
detector output to 1000mV on white tape even
after raising the sensor current to the maximum
allowable value, the sensor calibration alarm
will be triggered. This alarm will typically be
triggered if the ta
pe does not move correctly
and the stain becomes exceptionally dark
before the next analysis begins, or if there is no
Bypass mode is a mode of the analyzer that
disables any outputs that may be triggered by
alarms and is typically used during service to
avoid inadvertent triggering of alarms.
However, for normal operation, it is essential
that bypass mode be disabled. Thus, the
analyzer is equipped with a bypass timeout.
When enabled by putting a checkmark in the
‘Enable’ box on the Global tab , bypass mode
will automatically be exited by the analyzer
after a certain number of seconds after the last
keypad button push. The length of the bypass
timeout, in seconds, can be set by the user in
the Bypass Timeout (s) field.. By default, this is
set to 450 seconds, and is disabled.
Triggered if the AC power is removed from the
system
Triggered if the DC power is removed from the
system
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