A Digital Distribution Frame (DDF) is the interface when coaxial cable has to be terminated, organized or cross-connected in long-distant transport networks, or in access networks close to subscribers. LongXing is expert in producing DDF products and currently providing products to China's main telecom networks in 28 provinces. The frame is equipped with perfect earth system, and 75Ω/ 120Ω convertor can be provided at user's requirement. The frame has the highlights of fast and easy installation, high reliability, good cable management and wide range for all applications.
l It is the latest digital cross connection distribution system. It has not only the functions of fixed
distribution, fixed transfer and auto-loop and test that a normal digital distribution frame has, but
also the functions of fast dispatch, transfer etc.
l Modulized design: the minimum unit for expansion is a circuit block with flexible capacity deployment
and convenient capacity expansion.
l Each circuit board is provided with LED trace indicator. The cross connection status of circuit
board can be quickly indicated through test wire hence heavy manual searching is eliminated.
l Each circuit board has monitor hole so as to achieve on-line monitor without interrupting
communications or disturbance.
l Each circuit board has temporary dispatch hole, which provides quick circuit transfer, dispatch
and on-line cut & connection for network re-organization. “1” means inlet. “0” means outlet.
l Auto-loop circuit board automatically completes the test of remote equipment and feeds back
test signal.It’ s not necessary to sent personal to search fault at each point.
l Multi -way wiring channel. Reasonable wire lay out. convenient management.
l There are two connection ways: block connection and winded connection for user to select.
l The frame is provided with a power distribution warn module to supply-48 V (DC) power and
the power is protected with fuse.
l The frame is equipped with perfect earthing system.
l 120Ω/75Ω transfer module and unit can be provided if required by user.
The tables on this page may not dispay correctly on mobile devices, we recommend to use landscape mode or view the PDF file from the download section.
(H x W x D)
(ALL ARE CROSS CONNECTION)
|2600 X 1000 X 300(450)||32system/unit 480 system (15units)/frame||1. If cross connected,1 )at (two 120 Ω circuit board)/(one cross connection system), the depth of one-sided frame is
450 mm or 300 mm.2) at(two 75/120 Ω transfer circuit boards)/(one cross connection system ,the depth of one-
side frame is 450 mm.
2. If not cross connected, at (one 120 Ω circuit board)/ (one system),1)the function of on-line cut& connection is not
applicable, but on-line monitor is still possible,2)the capacity is doubled
|2200 X 1000 X 300(450)||32system/unit 384system (12units)/frame|
|2000 X 1000 X 300(450)||32system/unit 320system (10units)/frame|
|2600 X 800 X 300(450)||24system/unit 360system (15units)/frame|
|2200 X 800 X 300(450)||24system/unit 288system (12units)/frame|
|2000 X 800 X 300(450)||24system/unit 240system (10units)/frame|
|2600 X 600 X 300(450)||16system/unit 240system (15units)/frame|
|2200 X 600 X 300(450)||16system/unit 192system (12units)/frame|
|2000 X 600 X 300(450)||16system/unit 160system (10units)/frame|