Fiber Optic Cable for Pyramid Products
ST bayonet HCS fiber for Pyramid digital and loop communications: cable specs, simplex and duplex order codes, and termination kits.
Transmitters and Receivers
Pyramid products use fiber optics for communications and transport of digital signals. Fiber links are attractive because they offer:
- Perfect electromagnetic immunity
- Signal transport over long distances
- Signal transport across high voltage gaps
Connectors are ST bayonet type, integrated with the transmitter and receiver electronics. When mating a cable, align the key with the slot before pushing home and twisting to lock the bayonet. Do not use excessive force.
Data rate for communication channels is 10 Mb/s. Pyramid loop controllers allow up to 14 devices to share a single port in a loop. For high data-rate systems, loops are usually limited to one device, so the network becomes a hub-and-spoke topology. Wavelength is 650 nm (visible red), which makes commissioning and service easier than infrared systems.
Loop and fiber-aware instruments in the live catalog include the A360, A560, H10, H20, M40, N2400, and X22. Related cabling and hardware live under Accessories.
Transmitters
HFBR-1515 (light gray case). A metal-body connector is available on some products.
Receivers
HFBR-2515 (dark gray case). A metal-body connector is available on some products.
Fiber Optic Cable
The cable core is 200/230 µm step-index hard-clad silica (HCS) fiber with NA 0.37 and attenuation ≤ 8 dB/km, manufactured by OFS Inc., part number CF01493-10. Do not use cable with a smaller aperture or higher attenuation. HCS fiber has good radiation hardness and supports lengths up to 500 m. Minimum long-term bend radius is 16 mm. The outer jacket in plenum or riser grades is 2.2 mm OD, suitable for a crimped ST connector.
Cable assemblies are available from Pyramid as simplex or duplex cables. Simplex cables suit connections between devices in a communication loop, or for transporting individual digital bits. Duplex cables are convenient for point-to-point links (a single device on a “loop”).
Multi-fiber cables with an outer jacket are available for harder environments. OFS supplies cable with six individual fibers inside a 10 mm OD outer jacket (industrial and outdoor rated). Individual fibers are 2.5 mm OD, so select ST terminations accordingly.
Simplex and Duplex Assemblies
The drawings above show simplex ST to ST assemblies and duplex zipcord ST to ST assemblies, including typical two-device loop and dual-loop layouts.
Cable Termination
Cables can be bought ready-terminated to required lengths, or terminated in situ. When pulling pre-terminated cables through ducting or trays, protect the terminations from stress. ST terminations and a manual cleaving and crimping kit are available from Pyramid or directly from OFS. The kit includes full instructions. Run a few trial terminations before committing important cables, and leave a little excess length in case re-termination is needed.
Completed cables can be tested for attenuation loss with a dedicated tester, or by checking reliable data transmission between Pyramid devices.
Pyramid Fiber Optic Cable Order Codes
| Code | Description |
|---|---|
| CAB-ST-HCS-xx-ST | Simplex fiber optic cable, xx feet long, ST bayonet terminated |
| CAB-2ST-HCSD-xx-2ST | Duplex fiber optic cable, xx feet long, ST bayonet terminated |
Divide length in feet by 3.281 for length in meters. These assembly codes are orderable from Pyramid; they are not separate storefront product pages.
Other Cable Assembly Suppliers
Cable and assemblies are also available from Industrial Fiber Optics, Inc. (see their patch cord catalog).
OFS Part Codes
| OFS part | Description |
|---|---|
| CF01493-10 | Fiber HCS step index 200/230 µm with ETFE buffer (bare fiber) |
| BC03597-10-BL | Fiber simplex, 2.2 mm OD jacket, plenum rated |
| BC04340 | Fiber duplex zipcord, 2.2 mm OD jacket, plenum rated |
| BC04265-10 | Fiber simplex, 2.2 mm OD jacket, riser rated |
| BC04307 | Fiber duplex zipcord, 2.2 mm OD jacket, riser rated |
| BC04791-10 | Fiber dual with protective outer jacket 7.5 mm OD, riser rated |
| BC04791-12 | Fiber quad with protective outer jacket 7.5 mm OD, riser rated |
| AC01285-10 | Fiber multiple: six 2.5 mm OD fibers, 10 mm OD, industrial/outdoor |
| BP05065-12 | ST connector for 200/230 µm, 2.2 mm OD fiber |
| BP05065-13 | ST connector for 200/230 µm, 2.5 mm OD fiber |
Pyramid Connector and Tool Codes
| Pyramid code | Description |
|---|---|
| CONN-ST-HCS-WH | ST connector, white boot for TX, qty 1 |
| CONN-ST-HCS-WH25 | ST connector, white boot for TX, qty 25 |
| CONN-ST-HCS-BL | ST connector, black boot for RX, qty 1 |
| CONN-ST-HCS-BL25 | ST connector, black boot for RX, qty 25 |
| TOOL-ST-HCS | Termination kit, 200 µm, ST (OFS DT03732-32) |
| TOOL-ST-HCS-SP01 | Replacement diamond cleave tool (OFS DT03732-06) |
Related OFS service parts include CP01229-02 (replacement stripping tool) and P10188-03 (insertion-loss test kit for 200 µm fiber with ST connectors).
For application help selecting cable length or loop topology, contact us. Browse related notes on Support.