Keysight (Agilent) 8504A REPAIR and Keysight (Agilent) 8504A CALIBRATION

Custom-Cal has a high success rate in the repair of the Keysight (Agilent) 8504A. A calibration by Custom-Cal is performed by engineers with extensive OEM experience. We have the expertise and the necessary standards to perform the Keysight (Agilent) 8504A Calibration, onsite calibration may be available. We specialize in quick turnaround times and we can handle expedited deliveries upon request.

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   Keysight (Agilent) 8504A   Description / Specification:    
Keysight (Agilent) 8504A Lightwave Precision Reflectometer

The HP 8504A precision reflectometer is an optical instrument for making precise return-loss and back reflection measurements using sm 9/125 micrometer fiber. Measurements are applicable to all typical lightwave components such as opto-isolators, microphotonic assemblies, couplers, amps and connectors. The 8504A contains two internal wavelength sources (1300 and 1550 nm), both with 60 nm of spectral width. The peak wavelength for the 1300 nm source can occur at +/- 30 nm to source wavelength. The 1550 nm source peak wavelength occurs at 1550 +/- nm. Return loss measurements can be made with both source wavelengths. The power level range for the 1300 nm source is 0 to 75 dB, and 0 to 65 dB for the 1550 nm source. Return loss measurements can be made to an accuracy of +/- 2 dB, with a repeatability of +/- 1 dB. The 8504A is able to resolve closely-spaced reflections down to 17 micrometers for wavelengths of 1300 nm, and 34 micrometer for wavelengths of 1550 nm. With a measurement distance of 1 to 10 mm, two-event spacial accuracy is +/- 2% of span, and +/- 0.5% of span for distances of 10 to 400 mm. The 8504A offers low levels of spurios responses, with a spurious level at -40 dBc in high sensetivity, and -60 dBc in low sensetivity. Sweep speed is 17.9 mm/s or 0.056 s/mm. The full measurement span is 1 to 400 mm, which can be extended by using supplied fiber extension links. There are seven options available for order with the unit. These include 210 and 220, the ability to remove the internal 1300 and 1550 nm sources respectively. There are five available connector types for both front panel connectors and extension cables: opt 011 (HMS-10/HP), 012 (FC/PC), 013 (DIN 47256), 014 (ST), and 015 (Biconic).


Standard Calibration $775.00 *
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*This is a Web introductory price for one calibration of the Keysight (Agilent) 8504A. 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.

Bandwidth is the difference between the upper and lower frequencies in a contiguous set of frequencies within which a fiber optic component, link or network will operate.

Extinction Ratio (ER)
Extinction Ratio is the ratio of two optical power levels, of a digital signal generated by an optical source, (example a laser diode), where P1 is the optical power level generated when the light source is "on," and P0 is the power level generated when the light source is "off." The extinction ratio may be expressed as a fraction, in dB, or as a percentage.

Optical Signal-to-noise Ratio (OSNR)
Optical Signal-to-noise ratio is the ratio between the signal power and the noise power in a given bandwidth. Most commonly a reference bandwidth of 0.1 nm is used. This bandwidth is independent from the modulation format, the frequency and the receiver. For instance a OSNR of 20dB/0.1nm could be given, even the signal of 40 GBit DPSK would not fit in this bandwidth. OSNR is measured with a Optical Spectrum Analyzer. It is generally measured at the wavelength of interest.

Repeatability is the variation in a number of repeated measured quantities when measurement conditions are changed and restored. The value corresponds to half the spread between the minimum and maximum value measured.

Wavelength Repeatability
Wavelength Repeatability is the random uncertainty in reproducing a wavelength after detuning and re-setting the wavelength. The wavelength repeatability is ± half the span between the maximum and the minimum value of all actual values of these wavelengths. Example test condition: uninterrupted TLS output power, constant power level, temperature within operating temperature range, coherence control off, short time span. Note: NOTE The long-term wavelength repeatability can be obtained by taken the wavelength repeatability and wavelength stability into account.

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