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Electronic Measurement

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What kind of power sensor is used in the 81566A/67A?
The 81566A/67A uses an InGaAs photodiode, similar to Keysight's 81632A power sensor module.

FAQ 2011-07-05

Is there an electrical extender cable for the 815xx series optical heads?
An electrical extender cable was available. However, we do no longer manufacture it.

FAQ 2011-07-05

What is the difference between the FETCH and the READ command to get the data from the power modules?
The FETCH and READ command will both acquire a power reading from the mainframe.

FAQ 2011-07-05

Why should I use an optical head for optical power measurements?
Use heads for bare fiber, open beam, highly accurate absolute power or high power measurements.

FAQ 2011-07-05

What is the calibration cycle for the interface modules?
The 81618A/81619A interface modules do not require calibration.

FAQ 2011-07-05

What happens if the power unit is changed from dBm to Watt or vice versa?
All dependent parameters are automatically converted accordingly so all features remain fully functional.

FAQ 2011-07-05

How large is the optical head detector area?
All optical heads from Keysight Technologies use large area detectors.

FAQ 2011-07-05

I need to measure Polarization Dependant Loss (PDL), which optical head should I use?
The uncertainty due to polarization is less for InGaAs based optical heads than for Ge based optical heads.

FAQ 2011-07-05

What is the calibration cycle for the 8161x Optical Return Loss Module?
The 8161X Optical Return Loss Modules have a 24 month calibration cycle.

FAQ 2011-07-05

Is there an electrical extender cable available for the 8162xA/B optical heads?
The model number of this cable, with a length of 4 meters, is 81624CE.

FAQ 2011-07-05

Why can't I install the license key from my PFL CD-ROM?
If you have PFL version 1.0.3 the installation process is described on the CD-ROM (PFL README.pdf).

FAQ 2011-07-05

Does the parameters 'averaging time' and 'speed' influence the power control loop of the 81566A/67A?
The user selected averaging time is effective for all internal power measurements...

FAQ 2011-07-05

Is there a replacement product for the E5574A Optical Loss Analyzer?
Please contact your Keysight representative to discuss a configuration for your particular application.

FAQ 2011-07-05

What is the calibration cycle for the 8169A polarization controller?
The recommended calibration cycle for the 8169A is 12 months.

FAQ 2011-07-05

When I calibrate power/ return loss / source modules, do I send the mainframe as well?
No, it is not required to send in a mainframe to calibrate individual modules.

FAQ 2011-07-05

How is the 8169A different from the 11896A polarization controller?
The 8169A Provides polarization synthesis relative to a built-in linear polarizer.

FAQ 2011-07-05

Why can't I acquire the license key?
To rely on the CPU- ID remove the network-card before installing the PFL.

FAQ 2011-07-05

Can I use the 815xx Modules with the newer 816x mainframes? What are the trade-offs?
The 815xx modules will operate in the 8163 and 8164 mainframe, but NOT in the 8166 mainframe.

FAQ 2011-07-05

Can I use both PC and APC connectors with the optical heads?
Yes, you can use both straight (PC) and angled (APC) fiber with the Keysight Technologies optical heads.

FAQ 2011-07-05

Is the power control loop of the 81566A/67A also working for signal packets?
Yes, the averaging time of the 81566A/67A has to be adjusted to a time significantly longer than ...

FAQ 2011-07-05

What is the calibration cycle for the 816x mainframes?
The 816x mainframes do not require calibration.

FAQ 2011-07-05

What is the difference between the (for pay) photonic library and the (free) PNP drivers?
See long answer.

FAQ 2011-07-05

How do I make high power measurements with an optical head?
The + 27 dBm optical heads are convenient for high-power measurements.

FAQ 2011-07-05

How small is CD and PMD of the 8156xA?
The value of CD and PMD of the 8156xA is equivalent to the value of about 1 m optical fiber SMF28.

FAQ 2011-07-05

I am going through several patch cables before I connect to my device. Where do I establish my reference?
If you are measuring return loss through several patch cables there are three calibrations which are ...

FAQ 2011-07-05

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