DOAL: DCF77 Optical Antenna Link


DCF77 Optical Antenna Link
The Meinberg DOAL is a DCF77 Optical Antenna Link used to connect a Meinberg DCF77 antenna to a Meinberg DCF77 receiver using a single optical multimode fiber.

Key Features

Warranty Period (Years): 3 RoHS-compliant
  • 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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