N4371A データシートの表示（PDF） - HP => Agilent Technologies

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N4371A

RIN Measurement System

HP => Agilent Technologies 

Agilent N4371A

RIN Measurement System

▲ Accurate, high-speed and easy measurements

of RIN frequency characteristics

▲ Reduced uncertainty by using Agilent original

characterization technique (patent pending)

▲ High-speed measurement (5 seconds or less for

20 GHz span, 2000 point, 10 average)

▲ Analysis on multiple traces by various markers

Agilent provides accurate, high-speed

and easy-to-use spectral RIN mea-

surement system by combination of a

sensitive, low-noise optical receiver,

a industry-standard x-series spectrum

analyzer and a digital multi-meter.

RIN (Relative Intensity Noise) is a

parameter representing temporal

intensity fluctuations of a laser signal

and is used as an evaluation index of

the noise characteristic of the laser

devices. RIN is an indispensable item

for indicating the signal quality of both

digital and analog optical transmission

systems.

N4371A Agilent RIN measurement

system provides accurate RIN mea-

surements with a specially developed

characterization technique (patent

pending) for the photoelectric frequency

response of the entire system. Agilent

RIN measurement system also

reduces uncertainties by removing

the interference by thermal noise

and shot noise precisely.

The measurement speed of N4371A RIN

measurement system is very fast by

special control of the spectrum analyzer.

The measurement time is less than

5 seconds with the condition of a 20 GHz

frequency span, 2,000 frequency points

and 10 times average. The high-speed

measurement enables a real-time

observation of RIN frequency charac-

teristics with varying parameters of

the DUT.

The user interface of N4371A RIN

measurement system shown in figure 2

is easily accessible from the spectrum

analyzer display. The user interface

Figure 1. N4371A RIN Measurement System

Figure 2. RIN Measurement User Interface

provides functions of displaying up to

5 traces, placing up to 5 markers and

searching minimum or maximum RIN

values in specific frequency range.

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