Manual Operation User Calibration; Remote (Gpib) Operation User Calibration - ILX Lightwave OMH-6727B User Manual

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C H A P T E R

Manual Operation User Calibration

Front Panel execution of the User Calibration using the OMM-6810B is described
in the procedure below:
• Identify ambient conditions and zero the instrument as described in Chapter 2.
• Launch a laser of known wavelength and power into the OMH-6727B.
• Start the calibration by pressing the CAL USER button to place the unit in User Calibration
Mode. The LED above the CAL USER button will light. Press the CAL SET button to initiate
the User Calibration Procedure. The left display will show "CAL-λ".
• The measured wavelength is shown on the right display. Adjust the displayed wavelength to
match the laser's known wavelength using the WAVELENGTH LEFT and RIGHT buttons to
select a digit and then use the WAVELENGTH UP and DOWN arrow buttons to change the
wavelength.
• Press the CAL SET button to complete the wavelength calibration.
• The right display will now indicate "CAL-P". The measured power will be shown on the left
display. Adjust the displayed power to match the laser's known power using the POWER UP
and DOWN arrow buttons. If large adjustments are necessary, hold down the UP or DOWN
button to accelerate the change.
• Press the CAL SET button to complete the calibration. The unit returns to real time
wavelength and power measurements.

Remote (GPIB) Operation User Calibration

Remote controlled User Calibration is described in the following procedure.
• Identify ambient conditions. Block the laser beam from entering the aperture of the OMH-
6727B.
• Start the calibration by clearing the status registers, then zeroing the instrument by issuing
the following GPIB commands:
• Wait for the zero to finish. The controlling software can monitor the status of zeroing by
sending the following query in a loop. Exit the loop when the response is '1'.
• Launch a laser of known wavelength and power into the aperture of the 6727B. Start the
calibration by sending the following commands.
• Enter the known wavelength using the command:
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OMH-6727B
C A L I B R A T I O N
Manual Operation User Calibration
*CLS
RANGE:AUTO ON
ZERO
ZERO?
CAL:USER ON
CAL:USER START
CAL:WAVESET xxxx.xx ss