GN NeTest PMD440 Polarization Mode Dispersion Measurement System PMD-440

Description

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The Following Items Are Included:
GN Nettest PMD440 Polarization Mode Dispersion Measurement System (BC# 23581)
FC Connector
(2) SM FC-FC Fiber Cables
Power Cord
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This Item Has A Current Calibration!
GN NetTest PMD440 Polarization Mode Dispersion Measurement System
This Sale Is For The PMD440 Unit Only, Laptop Not Included In Sale!
Provides pre-qualification of existing spans for upgrades
Includes Accessories As Listed Above!
Working Condition: Excellent
Condition: Refurbished
Calibrated: Yes
Warranty: 1 YEAR WARRANTY
PMD440
NetTest's PMD440 measures a form of pulse dispersion which can cause the optical receiver to be unable to interpret the signal correctly and result in high bit error rates. PMD can dramatically decrease a fiber optic network's performance, particularly those networks operating at high data rates such as OC192 (STM-64) or OC768 (STM-256).
Benefits
Allow customers to provide a high data rate on fiber
Provides pre-qualification of existing spans for upgrades
Certify cable quality and verify installation practices
Detailed Product Description
Polarization Mode Dispersion, or PMD, is a form of pulse dispersion which can cause the optical receiver to be unable to interpret the signal correctly and result in high bit error rates. PMD can dramatically decrease a fiber optic network's performance, particularly those networks operating at high data rates such as OC192 (STM-64) or OC768 (STM-256).
In addition to the inherent, random polarization properties of fiber, stress and other environmental effects (such as changes in temperature) will directly affect the severity of PMD, causing it to change over time. In fact, the amount of PMD present when a fiber is first drawn is likely to differ from the PMD present after cabling or placement. PMD's varying nature makes it crucial to test installed fiber before upgrading to higher data rates or installing new high data rate systems.
Taking PMD measurements is easy.
The PMD440's ease of use allows accurate measurements to be obtained with minimal training. The light source is placed at the far end of the fiber under test, while the receiver and PC are located at the measurement site. Continuous network monitoring of suspect cables is available via the PMD440's remote testing capability.
The PMD440 has a 0.06-80 ps typical measurement range, as well as a 40 dB dynamic range enabling measurements of long haul systems. The PMD440 is also one of the fastest PMD test instruments in the world, an important consideration when entire networks must be tested before an upgrade.
Specifications:
Operating Wavelength Range
1300 nm light source
1250 nm to 1350 nm
1550 nm light source
1500 nm to 1600 nm
PMD Scan Range
250 ps
Time Resolution
7 fs
Measurement Time
15-30 seconds (typical) for full 250 ps scan
Input Power
0 dBm
Operating Temperature
0° to 35°C
Storage Temperature
-20° to +65°C
Weight (Max.)
Receiver Unit
4.0 kg (8.0 lbs.)
Light Source
0.7 kg (1.5 lbs.)
Dimensions
Receiver Unit
36 x 32 x 11 cm
Light Source
24 x 15 x 6 cm
Power Consumption (Max.)
Receiver PMD440-1
30 W (100/240 V, 50/60 Hz)
Light Source PMD440-2, PMD440-3
10 W (100/240 V, 50/60 Hz)
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