Keysight (Agilent) N4391A REPAIR and Keysight (Agilent) N4391A CALIBRATION
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Custom-Cal has a high success rate in the repair of the Keysight (Agilent) N4391A. 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) N4391A 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) N4391A   Description / Specification:    
Keysight (Agilent) N4391A Optical Modulation Analyzer

The Keysight N4391A Optical Modulation Analyzer offers most sophisticated signal processing algorithms with highest flexibility. The analysis software is based on the industry standard Keysight Vector Signal Analysis (VSA) software with extensions for the optical requirements like dual polarization data processing. This analysis software is the work horse in RF and mobile engineering labs and offers all tools needed to analyze complex modulated (or vector modulated) optical signals. It provides a number of parameters that qualifies the signal integrity of your measured signal. The most common one is the normalized geometric error of the Error Vector Magnitude (EVM) of up to 4096 symbols.
Specifications.

Optical modulation analyzer.
Maximum detectable baud rate: Up to 62 Gbaud.
Sample rate: 4 x 80 Gs/s.
Number of polarization alignment algorithms: 6.

Digital demodulation uncertainty.
Error vector magnitude noise floor: 1.8 %rms.
Amplitude error: 1.1 %rms.
Phase error: 0.9°.
Quadrature error: 0.05°.
Gain imbalance between I and Q: < 0.007 dB.
Image suppression: > 35 dB.
S/N: > 60 dB.
Sensitivity: -20 dBm.

Optical DUT input.
Optical input wavelength range: 1528 nm to 1630 nm.
Maximum input power: +14 dBm.
Maximum input power, damage level: +20 dBm.
Receiver polarization extinction ratio: > 40 dB.
Average input power monitor accuracy: ± 0.5 dB.

Optical local oscillator output.
Optical CW output power: > +14 dBm.
Wavelength range: 1528 nm to 1630 nm.

External local oscillator input.
Optical input wavelength range: 1528 nm to 1630 nm.
External local oscillator input power range: 0 dBm to +14 dBm.
Maximum input peak power (damage level): +20 dBm.
Small signal gain, external laser input to local oscillator output (-20 dBm LO input power): 28 dB @ 1550 nm.
Saturation output power @ -3 dB compression: 15 dBm.

Data acquisition.
Sample rate: Up to 80 GSa/s on each channel.
Data acquisition bandwidth: 20/25/33 GHz upgradable.
Jitter between channels: typ 700 fs.
Noise: 0.6 mV rms @ 10 mV range, 32 GHz bw.
ADC resolution: 8 bit/16 bit (interpolated).
Sample memory per channel: Up to 2 Gs/channel.

Options.
-110, Optical modulation analyzer with 4 channel receiver and analysis software.
-210, Internal local oscillator.
-220, Internal local oscillator and external local oscillator input and local oscillator output.
-500, C band iTLA internal local oscillator.
-501, L band iTLA internal local oscillator.
-510, Fast tunable C & L band local oscillator.



 

Standard Calibration $2,170.00 *
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*This is a Web introductory price for one calibration of the Keysight (Agilent) N4391A. 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.

Chromatic Dispersion
Chromatic Dispersion is a broadening of the input signal as it travels down the length of the fiber. Chromatic Dispersion results from a variation in propagation delay with wavelength, and is affected by fiber materials and dimensions.

Detector
A Detector is a signal conversion device that converts power from one form to another, such as from optical power to electrical power

Jitter
Jitter in technical terms is the deviation in or displacement of some aspect of the pulses in a high-frequency digital signal. Jitter is the time variation of a periodic signal in electronics and telecommunications, often in relation to a reference clock source. Jitter may be observed in characteristics such as the frequency of successive pulses, the signal amplitude, or phase of periodic signals. Jitter is a significant, and usually undesired, factor in the design of almost all communications links (e.g., USB, PCI-e, SATA, OC-48). In clock recovery applications it is called timing jitter.

Polarization Mode Dispersion (PMD)
Polarization mode dispersion (PMD) is a form of modal dispersion where two different polarizations of light in a waveguide, which normally travel at the same speed, travel at different speeds due to random imperfections and asymmetries, causing random spreading of optical pulses. It is he difference between the maximum and minimum values of loss typically measured in ps/km^1/2.

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