DOAL
DOAL
Meinberg
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
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| Attribute | Value |
|---|---|
| Manual URL | https://www.meinbergglobal.com/download/docs/manuals/english/doal.pdf |
| Form Factor |
DOAL/A: black eloxadized aluminium housing, with aluminium front and rear panel
DOAL/R: aluminium HF housing |
| Relative Humidity | Max. 85% |
| RoHS | Yes |
| Further information |
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. |
| Protection | IP30 |
| Electrical Connectors |
optical ST connector
female BNC Power Supply (DOAL/A only) |
| WEEE status of the product | This product is handled as a B2B category product. In order to secure a WEEE compliant waste disposal it has to be returned to the manufacturer. Any transportation expenses for returning this product (at its end of life) have to be incurred by the end use |
| 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 |
| Key Features |
large antenna cable distances (up to 2000mtrs.)
no destructive overvoltage via the antenna cable no unintentional monitoring possible via optical fiber |
| Operating Temperature | -25°C ... +65°C |
| 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) |
| Power Supply |
DOAL/A: 100 - 240VAC / 50/60Hz, 100 - 240VDC
optional: 18 - 72VDC power consumption: 5W max. |
| Attribute | Value |
|---|---|
| Data Sheet | Click here to view |
