The Notifier DS-SFM is a single-mode fiber option module. It converts one of the two wire digital audio ports (DAPs) on a DAA2, DAX, DS-DB, or a DVC that mounts fiber option modules (DVC-EMPCC version or later) to single-mode fiber.
One or two fiber option modules may be installed on a board, converting it partly or wholly to fiber. A digital audio loop (DAL) can mix wire, single-mode fiber and multi-mode fiber segments, and a module at one end of a fiber segment connects to a matching module at the other end.
Specifications
| Fiber type |
Single-mode, 9/125 micrometer |
| Connector |
LC style, supervised |
| Maximum attenuation |
30 dB at 1310 nm (module to module) |
| To a legacy fiber DAA |
17 dB max, 12 dB min from DS-SFM to DAA; 4 dB max from DAA to DS-SFM |
| Mounts on |
DAA2, DAX, DS-DB, DVC (DVC-EMPCC or later) |
| Shipping weight |
0.20 lb (0.09 kg) |
| Standards |
NFPA 72, UL 864 |
| Certifications |
UL S635; ULC S635; CSFM 7165-0028:0234 and 7165-0028:0224; FDNY COA 6121 and 6114 |
Installation notes
- Plugs onto clearly marked sites on the host board
- Fiber circuits are point-to-point; total cable, connector and splice losses must stay under the maximum attenuation
- Measure actual attenuation end to end with fiber-optic test equipment
- If a run to a legacy single-mode DAA measures under 12 dB, add a suitable attenuator
- Legacy single-mode DVCs and DAAs (ST connectors) connect to a DS-SFM on the newer boards
Related models
The DS-FM is the multi-mode version for 50/125 or 62.5/125 micrometer cable, and the DS-RFM connects to legacy multi-mode DVCs and DAAs.
Documents
FAQ
Which boards accept the DS-SFM?
The DAA2, DAX and DS-DB, and DVCs that mount fiber option modules (DVC-EMPCC version or later). One or two modules can be installed per board.
What fiber cable does it use?
Single-mode 9/125 micrometer fiber with LC-style connectors.
What is the maximum attenuation?
30 dB at 1310 nm between two nodes. When connecting to a legacy single-mode fiber DAA, the run from the DS-SFM to the DAA must be between 12 dB and 17 dB, and from the DAA back to the DS-SFM no more than 4 dB.
Can it connect to older fiber DVCs and DAAs?
Yes. A single-mode legacy DVC or DAA connects to a DS-SFM on a DAA2, DAX or DS-DB, even though the legacy units use ST connectors.
