Custom-Cal has a high success rate in the repair of the EXFO BRT-320A. A calibration by Custom-Cal is performed by engineers with extensive OEM experience. We have the expertise and the necessary standards to perform the EXFO BRT-320A Calibration, onsite calibration may be available. We specialize in quick turnaround times and we can handle expedited deliveries upon request.

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   EXFO BRT-320A   Description / Specification:    
EXFO BRT-320A Optical Return Loss Test Set

The Exfo BRT-320A is a field-ready return loss test set offered in five configurations: 1310 nm, 1550 nm or 1625 nm; dual-wavelength 1310/1550 nm or 1550/1625 nm. All come equipped with rapidly stabilizing TEC lasers and low-drift photo detectors to ensure constant optical return loss (ORL) measurements year after year. Built-In User-Friendliness Use the BRT-320A to read back reflection from 0 dB to 70 dB and easily store up to 300 readings in a non-volatile memory. ORL readings appear directly on the large, backlit LCD. An ORL zero function accounts for incidental back reflections before the point of measurement and complies with Bellcore optical continuous wave reflectometer (OCWR) requirements. In User Calibration mode, you can calibrate the unit to a known reflection. Other features include three-way powering (rechargeable NiCd battery pack, 9 V battery, AC adapter/charger), 0.01 dB resolution, ±0.1 dB linearity, internal InGaAs detector, low-battery indicator and a protective holster with shoulder strap. Reveal Return Loss Problems Many digital and analog fiber systems require ORL characterization. ORL along a fiber span is a combination of Rayleigh scattering and Fresnel reflections. Together, these phenomena can reduce fiber system performance and increase bit error rate (BER) by degrading transmitter stability. The BRT-320A measures cumulative link return loss and individual component reflectance to reveal potential ORL problems before they seriously affect your applications. Versatile The BRT-320A is ideal for local and long-distance Telco, CATV, utility, broadband and transmission equipment manufacturing applications. These environments often require complete network ORL characterization and component reflectance verification. The BRT-320A also functions as a stable, continuous-wavelength light source for attenuation measurements. The applications include fiber component and cable manufacturing. Wavelength (nm): 1310 ±15 (BRT-320A-02BLC-58). 1550 ± 15 (BRT-320A-03BLC-58), 1310/1550 ± 15 (BRT-320A-23BLC-58), 1625 ± 15 (BRT-320A-04BLC), 1550/1625 ± 15 (BRT-320A-34BLC). Spectral width (rms) (nm): < 5. Output power stability 15 minutes (dB): ±0.01 (02BLC, 03BLC), ±0.02 (23BLC). Output power stability 1 hour (dB): ± 0.05 (02BLC, 03BLC), ±0.06 (23BLC). Temperature stability (dB): ±0.2 (02BLC, 03BLC), ±0.03 (23BLC). Reflection range (dB): 0 to -70. Display resolution (dB): 0.01. Linearity (dB): ±0.1. Uncertainty (accuracy) (dB): ±0.1. Minimum output power (dBm): -6.5 (02BLC, 03BLC), -7.5 (23BLC), -3 (04BLC), -9/-7 (34BLC). Polarization sensitivity (dB): ±0.15.


Standard Calibration $185.00 *
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*This is a Web introductory price for one calibration of the EXFO BRT-320A. 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.

Coherence Time
Average time for the wave train to lose its phase realtionships

Fiber Bragg Grating (FBG)
A fiber Bragg grating (FBG) is a type of distributed Bragg reflector constructed in a short segment of optical fiber that reflects particular wavelengths of light and transmits all others. This is achieved by adding a periodic variation to the refractive index of the fiber core, which generates a wavelength specific dielectric mirror. A fiber Bragg grating can therefore be used as an inline optical filter to block certain wavelengths, or as a wavelength-specific reflector.

Modulation is the process by which the characteristic of one wave (the carrier) is modified by another. Adding information into pulses of light.

Power Linearity
When changing the power level and measuring the differences (in dB) between actual and displayed power levels, the power linearity is ± half the span (in dB) between the maximum and the minimum value of all differences.

Stability is the extent to which a specified property, characteristic, or parameter of a substance, device, or apparatus, such as a fiber optic transmission system, remains fixed with the passage of time or with varying environmental conditions.

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