Gentec-EO MACH 6 - Manual (Page 11)

Mach 6 User’s Manual Revision 2.1 11
Figure 3, Instrument Controls Display
The main controls for the instrument are below the display tabs. They are:
Range
Sets the instrument to the desired range. Note that the available ranges are dependant on
the sensor responsivity. Since the sensor responsivity varies with wavelength, turning
Wavelength Compensation on may cause a rescale of the available ranges. If this occurs,
the instrument will set itself to the same currently set range if it is still available. If it is
not, the instrument will set itself to the next available range.
Trigger Level
The trigger level in percent of full scale. If the level is set to 10% and the range is set to
200uJ, then the instrument will trigger on signals greater than 20uJ.
Trigger Source
Internal causes the instrument to take a measurement (if it is armed) whenever a pulse is
present that is greater than the set trigger level.
External causes the instrument to take a measurement (if it is armed) whenever an
external trigger pulse is sent, regardless of whether or not a laser pulse has occurred. This
is useful for testing for missing laser pulses.