Model 871A User’s Manual USING THE LASER WAVELENGTH METER
Bristol Instruments, Inc. 26
that does not receive sufficient intensity is discarded. When CW mode is
enabled, the NuView software reports and records all wavelength
measurements at the triggered rate, regardless of the intensity on the
detector.
Select the desired triggering method from the drop-down menu and click
OK.
• Frame Rate – Sets the measurement rate of the 871 system. When set
in Internal Trigger mode, the Frame Rate corresponds to the number of
measurements per second. When set in External Trigger mode, the
Frame Rate defines the measurement time initiated by the input trigger.
The relationship between Frame Rate and measurement time is
explained in greater detail in the following chapter. Select the desired
Frame Rate from the drop-down menu and click OK.
• Calibration Method – Sets the event that triggers the 871 system’s
calibration with the internal reference source. The 871 system will
calibrate periodically during the initial instrument warm-up time, even if
the Calibration Method is set to Manual.
- Manual – When selected, the user must initiate calibration by
selecting Calibrate from the Instrument menu. To enable Manual
calibration, select Manual calibration from the drop down menu and
click OK.
- Time – When selected, the instrument calibration is initiated at a
time interval specified by the Time Delta field. To enable Time
calibration, select Time calibration from the drop down menu, enter a
Time Delta value in minutes using the keyboard and click OK.
- Temperature – When selected, the instrument calibration is initiated
after the instrument’s internal temperature rises or falls by the amount
specified by the Temperature Delta field. The recommended setting is
to calibrate when the ambient temperature changes by 0.5 °C.
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