GN NetTest PMD-440 Polarization Mode Dispersion
Condition: Refurbished / Calibrated
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.
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) |
For full GN NetTest PMD-440 product specifications, please click here: GN NetTest PMD-440
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
PMD440 FD440 FD440TX
GN NetTest PMD-440 PMD 440 Polarization Dispersion System Models On Sale Warranty Calibration Backed by The Best Service and Lowest Prices in the Industry.
BC# 23581
- GN Nettest PMD440 Polarization Mode Dispersion Measurement System (BC# 23581)
- FC Connector
- (2) SM FC-FC Fiber Cables
- Power Cord