
#FOAT50S1
Fiber Optic In-Line Attenuator - Singlemode
Buffers overpowering fiber signals and eliminates errors.
Product Features
- Provides loss to a fiber cable if the dB power is too great.
- Ideal for use when equipment is too close to each other.
- GR-910 compliant.
- Ceramic ferrules.
When a fiber device is very close to another one-for example, as little as 3 feet (0.9 m)-the signal is extremely strong. The light signal doesn't have time to attenuate or lose strength as it travels down the fiber. This is called receive saturation. The energy level of the fiber optic signal is too high and exceeds the operating range of the receiving equipment. So when the light reaches the other end, it reflects back along the cable. This reflection distorts the signal and disrupts data.
Solve the problem with Black Box attenuators. They feature guaranteed return-loss measures to attenuate the signal. To achieve the fixed return loss, the attenuators use a doped single-mode fiber with a wavelength of 1310–1550 nm.
Use the attenuators in CATV, LAN, WAN, and telecommunications applications. When you have multiple fiber runs, use the attenuators to make sure all are operating at the same optical level. You can also use the attenuators as part of your test kits to verify optical levels.

Lifetime Double Diamond™ Warranty (Standard)
Take the risk out of equipment purchases with the Double Diamond™ Warranty from Black Box.
Our Double Diamond Warranty* protects your Black Box® brand products from manufacturing and/or material defects.
The FOAT50S1-LC-5DB comes with a standard Lifetime† Double Diamond Warranty*. During the warranty period, Black Box will repair or replace your damaged equipment at NO CHARGE!*
†Lifetime Warranty Periods
• Cables - 15 Years
• Infrastructure (Cabinets & Racks, Cable Management, Power Cords, Testers, and Tools) – 10 Years
• IoT - 5 Years
• Networking - 10 Years
What’s more, we also have a 30-day return policy on most products. Simply call Customer Service for a Return Authorization (RA) number, return your product in new condition and in the original package to receive a full refund.** Click here to find your local sales office to obtain a Return Authorization.
* Warranty subject to certain exclusions and limitations. Click here to view our full terms and conditions.
** Returns contingent upon specific exclusions and limitations. Click here to view our full return policy.