DOAL: DCF77 Optical Antenna Link
Key Features
- large antenna cable distances (up to 2000mtrs.)
- no destructive overvoltage via the antenna cable
- no unintentional monitoring possible via optical fiber
Product Description
The DOAL/A module mounts indoors, and connects to a Meinberg DCF antenna (AI01, AW02 or AK03) with a short coaxial cable. The DOAL/R module connects to the receiver's antenna input either directly or with a patch cable. Both modules are linked to each other by a single GI50/125μm or GI62.5/125μm multimode gradient fiber. This Fiber Optic connection provides several advantages:
The DOAL system is suitable for all Meinberg DCF receivers, and can be retrofit to existing Meinberg DCF77 systems. The DOAL/A antenna module requires an external power supply to operate the DCF77 antenna. The DOAL/R receiver module is powered by the DCF receiver and does not require an external power supply.
Characteristics
Type of Antenna | Input for a Meinberg DCF77 antenna (77,5 kHz) via coaxial cable |
Optical Outputs | ST connector for GI 50/125µm or GI 62,5/125µm gradient fibre, Wave length: 850nm, Launchable optical output power: typ. 15µW (into GI 62,5/125µm), Optical input level: min. 3µW |
Electrical Connectors | optical ST connector female BNC Power Supply (DOAL/A only) |
Operating Voltage | DOAL/A: 100 - 240VAC / 50/60Hz, 100 - 240VDC optional: 18 - 72VDC power consumption: 5W max. |
Form Factor | DOAL/A: black eloxadized aluminium housing, with aluminium front and rear panel DOAL/R: aluminium HF housing protection class: IP30 |
Physical Dimensions | DOAL/A: 44mm x 105mm x 165mm (height x width x depth) DOAL/R: 25mm x 25mm x 95mm (height x width x depth) |
Supported Temperature | -25 ... 65° C |
Supported Humidity | Max. 85 % (non-condensing) at 40 °C |
Warranty | Three-year warranty |
RoHS Status of Product | This product is fully RoHS-compliant. |
WEEE Status of Product | This product is handled as a B2B (Business to Business) category product. To ensure that the product is disposed of in a WEEE-compliant fashion, it can be returned to the manufacturer. Any transportation expenses for returning this product (at end-of-life) must be covered by the end user, while Meinberg will bear the costs for the waste disposal itself. |
Downloads
Short Info Sheet
Manuals
Please note that only the most recent manual version is available for download. This manual therefore may not be suitable for all product versions.
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