A 12-channel optical switch box that effectively improves workability with YOKOGAWA OTDRs. Controlled from an OTDR, the OSW allows continuous measurement of all or a subset of the 12 channels.
The compact size makes this an ideal solution to conveniently measure multiple ribbon fibers in the field or conserve production test rack space.
*AQ3550 is not available with an OTDR for multimode fiber. This product is for single mode fiber.
The AQ3550 automatically switches optical paths under OTDR control, enabling continuous measurement of allor selected channels without manually reconnecting fibers.

The compact design makes the AQ3550 suitable for testing multiple ribbon fibers in the field and saving spacein production test racks.

The AQ3550 is controlled directly from compatible YOKOGAWA OTDRs, allowing users to set channels andexecute continuous measurements from the OTDR.
With 12 optical channels, the AQ3550 supports efficient testing of multi-fiber single mode fiber cables forproduction, installation, and maintenance applications.
AQ3550 is for single mode fiber only and is not available with OTDRs for multimode fiber.
| Item | Specification |
|---|---|
| Port Configuration | 1 × 12 |
| Wavelength | 1260 nm to 1650 nm |
| Insertion Loss | 2 dB typ. (2.5 dB max.) |
| Repeatability | ≤±0.021 |
| Return Loss | ≥40 |
| Optical Fiber | SM (ITU-T G.652, G.654, G.657) |
| Optical Connector | Input: SC, Output: MPO |
| Remote Interface | USB port for Power Supply/Remote |
| Dimensions | Approx. 185 mm (W) × 116 mm (H) × 56 mm (D), excluding protrusions |
| Weight | Approx. 380 g |