User's Manual

March 1, 2002 Page C5
Hub Interfaces
Industry standard interfaces are employed between the various elements of the Hub system.
Refer to Figure 2. Note that specific manufacturer and part numbers are given in the
Installation
Details
section of this manual. See also the ARCi and Vyyo specifications sections of this manual.
ARCi Hub Antenna
Transmit and receive signal interfaces:
75 ohm type F female connectors
Premium quad-shielded RG-6 coax cable recommended (e.g. Belden 1189A)
Upstream signal frequency 6.4 through 32 MHz, nominal signal level -4 dBmV.
Maximum cable loss between ARCi hub and WMTS
: 15 dB at 30 MHz.
Downstream signal frequency 477 through 577 MHz, nominal signal level 50 dBmV.
Maximum cable loss between upconverter and ARCi hub
: 15 dB at 500 MHz.
Power interface:
Switchcraft type EN3 6 pin male connector on both upstream and downstream radio
enclosures (two per hub antenna)
Nominal 8.5 Vdc at 920 +/- 100 mA, combined upstream and downstream
Telemetry:
RS-485, implemented in same connector as power interface on both upstream and
downstream radio enclosures. [Telemetry support will be available in late 2002].
Wireless Hub (WMTS)
75 ohm type F female connectors
Upstream input signal frequency 6.4 through 32 MHz, nominal signal level -4 dBmV.
Downstream output signal frequency 44 MHz, nominal signal level 20 dBmV. (input to
Upconverter)
Network connection RJ45 female connector, 100 Mbps 100baseT Ethernet LAN