|Gross data rate
||Full duplex (half duplex also supported)
||1.4km with 130mm lenses. See Distance Issues for more details.
The switch or cad has to have well implemented PLL.
|Minimum operating distance
||1/4 of nominal range.
Further manual reduction possible by change of two passive components in receiver.|
- Connects with RJ45 jack into IEEE 802.3 UTP interface. Must be plugged
directly into data terminal equipment (DTE, PC or a switch) using the integral
1m cable.Autonegotiation not supported, not transparent for autonegotiation
- The preamble is chopped off more than specified by IEEE 802.3 which
could cause a problem when Ronja is connected into a cascade of pure hubs.
However hubs almost don't exist today anymore so it is not a problem.
- Doesn't comply to IEEE 802.3 regarding not transmitting when link integrity
is not yet established. This violates page 303
14.2 g) - but IEEE 802.3 compliant devices must work with it. Complying to it
would make Ronja Tetrapolis more complicated
||285mA @12VDC (3.42W) from wall cube, 2W from external
heating power supply (switchable off).
|Full data load (both directions)||225mA||285mA
||visible, 625nm, 100nm spectral width (618nm perceived
|Divergence cone half angle
||1.9mrad (130mm aperture transmitter lens)|
|Estimated Optical EIRP
||20kW (130mm aperture transmitter lens, HPWT-BD00-F4000)|
|Operating temperature||-30...+70degC (outdoor part - optical heads, RX, TX), 0...+55degC (indoor part - Twister2)|
||up to 100% (condensing) with lens heating on (outdoor part), up to 95% with lens
heating off (and indoor electronics).|
||15.5kg (one side of a link, on a welded parallel console)|
|Required visibility||4km at maximum range. See Distance Issues for more details.
||BPSK (as on AUI aka Manchester) plus 1MHz asynchronous 50% duty
cycle square wave between packets. The transmitter appears to shine permanently and
steadily no matter if data pass or not.|
||Power, Receive Packet, Transmit Packet|
||visual, retroreflector for transmitter and
DC voltage signal strength monitor port for receiver.|
|Eye Safety||Complies with Czech State regulation: 480/2000 Col. Government Direction about Health Protection from Non-ionizing Radiation|
|Mechanical Installation Constraints||
- Possible mount places:
|Place||Is drilling necessary?
|Railing, round or rectangular||No
|Corner of wall||Yes
|Horizontal or tilted surface of masonry or masonry covered with tin, foil etc.||Yes
- Max. 1m from RJ45 connector is a grounded metal box with dimensions 180x123x62 mm.
- Cable distance between RJ45 connector and optical head mounting points is
|EMI and safety installation constraints||
- Cable may be laid directly along sources of interference (other signal
and power cables)
- Cable doesn't radiate interference
- Optical heads may be mounted even on places where lightning strike hazard