Gentec-EO MAESTRO - Manual (Page 37)

MAESTRO User’s Manual Revision 8.1 36
Table 2-3 List of Display Parameters menu bar options
Option Icon Description
Wavelength
(

)
Sets and displays the source’s
wavelength.
If the desired wavelength is not on
display, touch
More…, which will take
you to the Wavelength menu window
(refer to section 2.4.2.1). The wavelength
value tells you what NIST-based
calibration factor is active. You can find
the factors on the Calibration and the
Personal wavelength correction
™
certificates that are shipped with your
detector.
Range
Sets and displays the detector’s range.
Touch Auto to be in auto range mode, +
to increase the range, and
– to decrease
the range.
Touch
More… to go to the Range menu
window (refer to section 2.4.2.2).
Mode
Sets and displays the Measure Mode
depending on the connected detector
head. Quickly access all the detector
head’s available measure modes using
this button. For more information, refer to
section 2.4.2.3.
Zero
Resets the zero reading level. It does
this by subtracting the power reading on
the display as soon as the On button is
touched. Subsequent measurements will
be relative to this zero power level. The
main purpose of this option is to remove
reading offset caused by thermal noise in
the environment. Thermal noise is
caused by a detector that has not been
thermally stabilized OR there was a heat
source in the field of view of the detector
when the MAESTRO was turned on (for
example, the hand or body of the user).
Use this function once your power meter
has achieved thermal equilibrium to
ensure accurate measurements.
For instructions on the proper way to
adjust your detector’s offset to zero see
step 8 in Section 2.2 Quick power and
energy measurement procedure.
In Energy mode the zero clears the
current value.