Keysight (Agilent) N4373B REPAIR and Keysight (Agilent) N4373B CALIBRATION

Custom-Cal has a high success rate in the repair of the Keysight (Agilent) N4373B. 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) N4373B 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) N4373B   Description / Specification:   Spec Sheet 
Keysight (Agilent) N4373B 67 GHz Single-Mode Lightwave Component Analyzer

The Agilent N4373B Lightwave Component Analyzer (LCA) tests the most advanced 40 Gb/s electro-optical components, with up to 67 GHz modulation bandwidth. It achieves fast measurements by including an E8361A Performance Network Analyzer. In the N4373B, all optical and electrical components are carefully selected and matched to each other, to minimize noise and ripple in the measurement traces. Together with the temperature stabilization of the core components, this improves the repeatability and the accuracy of the overall system. It has the following measurement capabilities:
3dB cut-off frequency (S21),
Responsivity (S21),
Electrical reflection (S11 or S22),
Group Delay vs. frequency,
Insertion Loss (IL),
Transmission bandwidth (optical),
Transmission bandwidth (electro-optical),
all electrical S-parameter measurements.

Optical test set.
Operation frequency range: 10 MHz to 67 GHz (N5227A).

LCA optical input.
Operating input wavelength range: 1280 nm to 1625 nm.
Maximum linear average input power: +5 dBm (Input 1), +15 dBm (Input 2).
Maximum safe average input power: +7 dBm (Input 1), +17 dBm (Input 2).
Optical return loss (typical): > 27 dBo.
Average power measurement range: -20 dBm to +5 dBm (optical input 1), -10 dBm to +15 dBm (optical input 2).
Average power measurement uncertainty (typical): ±0.5 dBo.

LCA optical output.
Optical modulation index (OMI): > 5 % typ. at 1 GHz modulation frequency and -8 dBm RF power.
Output wavelength: 1550 ± 20 nm.
Average output power range: −1 dBm to +5.
Average output power uncertainty (typical): ± 0.5 dBo.
Average output power stability, 15 minutes (typical): ± 0.5 dBo.

-301; 67 GHz LCA based on E8361A-014, -010 (time domain) PNA and 1550 nm optical test set-102; 1310 nm and 1550 nm source optical test set.
-399; 67 GHz, 1550 nm optical test set with integration of - E8361A-014 customer supplied PNA, - E8361A-UNL customer supplied PNA.
-021; Straight FC/PC SM.
-022; Angled FC/APC SM.


Standard Calibration $1,925.00 *
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*This is a Web introductory price for one calibration of the Keysight (Agilent) N4373B. 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.

Optical power referenced to 1 millimatt

Multimode Fiber
Multimode Fiber has a large core (almost always 62.5 microns - a micron is one one millionth of a meter - but sometimes 50 microns) and is used with LED sources at wavelengths of 850 and 1300 nm for short distance, lower speed networks like LANs. Both multimode and singlemode fiber have an outside diameter of 125 microns - about 5 thousandths of an inch - just slightly larger than a human hair.

Power Repeatability
Power Repeatability is the random uncertainty in reproducing the power level after changing and re-setting the power level. The power repeatability is ± half the span (in dB) between the highest and lowest actual power. Note: - The long-term power repeatability can be obtained by taken the power repeatability and power stability into account.

Refractive Index
The refractive index or index of refraction of a substance is a measure of the speed of light in that substance. It is expressed as a ratio of the speed of light in vacuum relative to that in the considered medium. The velocity at which light travels in vacuum is a physical constant, and the fastest speed at which energy or information can be transferred. However, light travels slower through any given material, or medium, that is not vacuum.

Total insertion loss
A measure of the loss of light within an optical component

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