| Gross data rate
| 10 Mbps
|
| Transmission mode
| Full duplex (half duplex also supported)
|
| Nominal range
| 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. |
| Data interface |
- 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
signals.
- 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
|
| Power consumption
| 285mA @12VDC (3.42W) from wall cube, 2W from external
heating power supply (switchable off).
| | Typical | Maximum
| | Idle | 185mA | 245mA
| | Full data load (both directions) | 225mA | 285mA
|
|
| Operating wavelength |
visible, 625nm, 100nm spectral width (618nm perceived
wavelength, red-orange) |
| Optical output |
17.2mW |
| 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) |
| Operating humidity |
up to 100% (condensing) with lens heating on (outdoor part), up to 95% with lens
heating off (and indoor electronics). |
| Weight |
15.5kg (one side of a link, on a welded parallel console) |
| Required visibility | 4km at maximum range. See Distance Issues for more details.
|
| Optical modulation |
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. |
| Indicators LEDs |
Power, Receive Packet, Transmit Packet |
| Aiming system |
visual, retroreflector for transmitter and
DC voltage signal strength monitor port for receiver. |
| Fine aiming gear ratio |
1:300 |
| 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
| | Wall | Yes
| | Corner of wall | Yes
| | Chimney | No
| | Horizontal or tilted surface of masonry or masonry covered with tin, foil etc. | Yes
| | Ceiling | 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
max. 100m
|
| 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
exists.
|
Contact, support: Clock
on the Internet Relay Chat.© 1998-2016 Karel ‘Clock’ Kulhavý et al..