A calibration by Custom-Cal is performed by engineers with extensive OEM experience. We have the expertise and the necessary standards to perform the ADVANTEST Q8331 Calibration, onsite calibration may be available. We specialize in quick turnaround times and we can handle expedited deliveries upon request.

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   ADVANTEST Q8331   Description / Specification:    
ADVANTEST Q8331 1270 to 1680 nm Multi Wavelength Meter

The Advantest Q8331 Multi Wavelength Meter uses a He-Ne laser as wavelength reference enables high accuracy measurements of up to ±1 ppm ±1.5 pm at 1550 nm). In addition, since the He-Ne laser oscillates with very high stability, ±1 ppm measurement accuracy is guaranteed over a long time period without recalibration. The Q8331 can measure wavelengths at a sampling speed of 2 measurements per second so that wavelength fluctuations caused by temperature variations can be captured precisely. The Michelson interference method allows for measurements with high resolution of up to 0.1 pm/10 MHz. The Q8331 includes a temperature and atmospheric pressure sensor, that allow it to automatically adjust measurements to changes in temperature and atmospheric pressure. The Q8331 can be switched to display optical frequency or wavelength. This is convenient for adjusting input wavelengths to the ITU-T grid. Since the deviation is displayed with reference to the keyed user entry, wavelength fluctuations of the input optical signals caused by temperature variations can be viewed with high resolution and high precision. Specifications. Wavelength Measurement range: 1270 to 1680 nm. Wavelength Accuracy: ±1 ppm (1.5 pm at 1550 nm). Resolvable separation: 10 GHz (High resolution mode), 20 GHz (Normal resolution mode). Display resolution: 0.1 pm. Power level Accuracy: ±0.5 dB (1310 nm, 1550nm). Linearity: ±0.3 dB (-30 dBm or more, 1550 nm). Flatness: ±0.2 dB (1520 to 1600 nm). Sensibility: -40 dBm (1270 to 1600 nm), -30 dBm (1600 to 1680 nm). Maximum input power: +10 dBm (Total input lines). Polarization dependency: ±0.3 dB (1270 to 1600 nm). Display resolution: 0.01 dB. Number of input lines: Max. 300. Measurement time: 0.5 sec (Normal resolution mode), 1 sec (High resolution mode). I/O Interface: GPIB.


Standard Calibration $350.00 *
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*This is a Web introductory price for one calibration of the ADVANTEST Q8331. Price does not in most cases include measurement performance data. Pricing does include NIST traceable calibration and issue of a calibration certificate and calibration label. Pricing may vary slightly due to volume and location of laboratory supporting calibration. Volume pricing may apply. On-site fees may apply depending on logistics, location and volume of work to be completed during the visit.

Related Optical Terms and Definitions. For a complete list go to our  Terms and Definitions Page.

A change in the optical frequency caused by direct modulation of the laser. A chirp is a signal in which the frequency increases ('up-chirp') or decreases ('down-chirp') with time. In some sources, the term chirp is used interchangeably with sweep signal.

The extent to which optical power from one signal path is prevented from reaching another signal path.

Polarization Extinction Ratio
Polarization Extinction Ratio is the ratio of optical power in the slow axis of the polarization maintaining fiber to optical power in the fast axis within a specified wavelength range.

Sidemode Suppression Ratio
Sidemode Suppression Ratio is the ratio of average signal power to the optical power of the highest sidemode within a distance from 0.1 to 6 GHz to the signal’s optical frequency, expressed in dB.

Wavelength Stability
Wavelength Stability is the change of wavelength during given time span, expressed as ± half the span between the maximum and the minimum of all actual wavelengths.

Please contact us for your ADVANTEST Q8331 CALIBRATION and/or ADVANTEST Q8331 1270 to 1680 nm Multi Wavelength Meter REPAIR

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