Fluke DSP-FTA440 Gigabit Multimode Adapter
Networks running Gigabit Ethernet over multimode fiber commonly use a new type of light source called a Vertical Cavity Surface Emitting Laser (VCSEL). VCSELs are more cost-effective than conventional lasers and it provide greater bandwidth than LED light sources.
The proper way to accurately test a fiber network using a VCSEL is with a tester that uses a VCSEL. Meet the DSP-FTA440 the world's first VCSEL-based Fiber Test Adapter.
Combining the DSP-FTA440S with a DSP-4000 DSP-4100 or DSP-4300 provides automatic, dual-fiber loss testing and certification by using a VCSEL laser at 850 nm and a Fabry-Perot (FP) laser at 1310 nm wavelengths. It also measures the length of fiber links and certifies the results against the Gigabit Ethernet standard.
In addition, the DSP-FTA440S allows bi-directional testing on both fibers under test and saves results for both directions in the same record. Utilizing Fluke Networks' comprehensive CableManager Software you can easily save all fiber link data electronically for results management and report generation.
Why do I need the DSP-FTA440S Gigabit Multimode Fiber Test Adapter if I already have an LED multimode tester?
- Networks running Gigabit Ethernet over multimode fiber, use a light source called a Vertical Cavity Surface Emitting Laser (VCSEL) for data transmission at 850 nm. More cost-effective than the traditional laser, a VCSEL provides greater bandwidth than possible with LED light sources.
With a VCSEL source, the light energy is concentrated in the center of the fiber, whereas an LED source fills the entire fiber with light energy. The farther the light energy is away from the center of the fiber, the more likely it is to escape the fiber and show up as power loss.
Therefore, when LED testers are used to test gigabit multimode fibers, they tend to show more power loss than is actually present in a network using a VCSEL transmission source.
With the very tight loss budgets for Gigabit Ethernet, you could actually get a FAIL reading with an LED test, when the link is really working. This could result in time wasted trying to fix a problem that doesn't exist.
When you test with the VCSEL-based DSP-FTA440S, you can be sure that you will see the actual loss that is present in the network.
Can I test either 62.5 m m or 50.0 m m fiber with the Gigabit Multimode Fiber Test Adapter?
- Yes. The DSP-FTA440S Fiber Test adapter contains a 50.0 m m internal launch fiber, so it is perfect for testing 50.0 m m fiber. And it works just as well for 62.5 m m fiber because the light is being launched from a smaller fiber (50.0 m m) into a larger fiber (62.5 m m), capturing all of the light energy. This is true for both 850 nm and 1300 nm wavelengths.
Does it matter what core size or type of patch cord I use?
- Yes. The patch cord should always match the core size and type of the fiber under test. A mismatched patch cord may cause inaccurate loss measurements at the mismatched fiber-to-fiber interface.
Fast and easy testing. Automatic documentation
Testing and certifying all types of optical networks has never been easier with the DSP Series Cable Testers and our family of Fiber Test Adapters
Fluke Networks' DSP Fiber Test Adapters:
- Test two fibers and two wavelengths at one time.
- Utilize Fluke Networks' comprehensive CableManager¿ Software for results management and report generation.
- Allow bi-directional testing on both fibers under test and save results for both directions in the same record.
- Automatically measure length, propagation delay and loss.
- Include a built-in TALK feature that allows you to communication with a person or the other end of the fiber.
- Have a FindFiber feature that provides a quick check for users at both ends to locate a signal from the other end.
- Keep track of the maximum and minimum power throughput of the test with the Monitor feature.
- Efficiently and accurately test fiber links with any of the four major SFF connectors.
- Are built rugged to withstand the drops and other mishaps that occur in today's network installation environments.
Power supply: ±6 V supplied by the DSP-4000 test tool.
Temperature range: Operating: 0 ºC to +40 ºC; Storage: -10 ºC to +60 ºC
Warm-up time: 5 minutes
Humidity range: Operating: 0 % to 75 % RH, non-condensing
Storage: 0 % to 95 % RH, non-condensing
Dimensions: 3.3” x 4.6” x 1.9” (8.3 cm x 11.6 cm x 4.7 cm)
Weight: 7.6 oz (215 g)
Connector: SC, multimode
FTA420 - Multimode LED
FTA430 - Singlemode laser
FTA440 - 850 nm Vertical Cavity Surface Emitting Laser (VCSEL);
1310 nm FP laser
FTA420 - 850 nm and 1300 nm
FTA430 - 1310 nm and 1550 nm
FTA 440 - 850nm and 1310 nm
FTA420 -20 dBm (10 mW), typical (into 62.5/125 mm fiber)
FTA430 and FTA440 -10 dBm
Power output stability (8 hours): ±0.25 dB at 23 °C
Power measurement accuracy: ±0.25 dBm at 23 °C, 45 % RH to 75 % RH, -20
dBm for 850 nm and 1300 nm, -10 dBm for 1550 and 1625 nm
Connector: SC, multimode or singlemode
Detector type: InGaAs
Calibrated wavelengths: 850 nm, 1300 nm, 1310 nm, 1550 and 1625 nm.
Power measurement range: +3 dBm to -50 dBm
Power measurement linearity: ±0.25 dB at 23 °C
Measured in Loopback Mode
FTA420 - 5000 meters of 62.5 um multimode cable
FTA430 - 10000 meters of singlemode cable
FTA440 - 5000 meters of 50.0 um multimode cable
Length measurement accuracy: ±1.5 m plus 2 % of length