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and cannot be change. If you inadvertently trigger on noise, change to a
higher scale.
ERRATIC TRIGGERING?
For a few detector heads, in electrically noisy environments, it is possible
that the 842-PE will inadvertently trigger on the noise. In that case,
increase the trigger level to 3% or higher if necessary.
It is always good practice to reduce electrical noise generation or shield
the detector and meter when measuring very low pulse energies.
2.3.3.6 Reference Values
Comparisons of your power measurements to certain user-defined reference
values are easy to make. If your current measurements lie within your
established Upper and Lower bounds, then they meet the standards. If they
go above or below the bounds, then there could be a quality problem, which
triggers a fail message. The Reference Values option has two modes:
Threshold mode and Pass/Fail mode.
Display
Scale
Settings
Ctrl
?
Graphical Mode
Full Display Mode
Analog Out
Reset
Threshold
Off
Pass/Fail
Fig. 2-14 Pass/Fail menu
Threshold mode: Use this mode to set or change the upper and lower
bounds, reference values and to restore the last values. To set or change a
setting, use the arrow keys and scroll to Set Upper Bound, Set Lower Bound,
Close, Set Reference Values, or Restore Last Values. Highlight your choice
and press the ↵ Enter key. You may select Upper Bound only, Lower
Bound only or both.