Lambda Scan Applications

The Agilent 816x VXIplug&play Instrument Driver

How to Perform a Lambda Scan Application

Figure 19 Lambda Scan Operation Setup

The Prepare Lambda Scan Function

The Prepare Lambda Scan (hp816x_prepareLambdaScan) function prepares a Lambda Scan operation.

The Prepare Lambda Scan (hp816x_prepareLambdaScan) function must be called before a Lambda Scan operation is executed. Use the return values of this function (Number of Datapoints and Number of Power Arrays) to allocate arrays for the Execute Lambda Scan (hp816x_executeLambdaScan) function.

To obtain a higher precision, the Tunable Laser Source is set 1 nm before the Start Wavelength, this means, you have to choose a Start Wavelength 1 nm greater than the minimum possible wavelength. Also, the wavelength sweep is actually started 90 pm before the Start Wavelength and ends 90 pm after the Stop Wavelength, this means, you have to choose a Stop Wavelength 90 pm less than the maximum possible wavelength.

Triggers coordinate the Tunable Laser module with all Power Meters. The function sets for the lowest possible averaging time available for the installed Power Meters and, then, sets the highest possible sweep speed for the selected Tunable Laser module sweep.

If one of the following circumstances occurs, the "parameter mismatch" error will be returned:

1If one Power Meter is out of the specification at 1550 nm, the error "powermeter wavelength does not span 1550nm" will be returned. For example, the HP 81530A Power Sensor and the HP 81520A Optical Head are out of specification at 1550 nm. Remove the Power Meter that is out of specification at 1550 nm from the mainframe.

Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Fifth Edition

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8163A, 8164A, 8166A, B specifications

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