| Gross data rate | 
10 Mbps | 
| Transmission mode | 
Full duplex only | 
| Nominal range | 
1.4km with HPWT-BD00-F4000 and 130mm lenses. See Range
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 | 
IEEE 802.3 Attachment Unit Interface (AUI). Connector male
DB-15 with screws instead of AUI mechanical latch. AUI cable not
supported - integrated cable length 1m. 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. | 
| Power consumption | 
300mA @12VDC (3.6W) from AUI, 2W from external heating power
supply (switchable off) | 
| 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…+70°C (outdoor part - optical heads, RX, TX),
0…+55°C (indoor part - AUI interface) | 
| Operating humidity | 
up to 100% (condensing) with lens heating on, up to 95% with
lens heating off. | 
| Weight | 
15.5kg (one side of a link, on a welded parallel console) | 
| Required visibility | 
4km for uninterrupted operation at full range. See Distance Issues for more information. | 
| Optical modulation | 
BPSK (as on AUI) 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 AUI connector is a grounded metal box with
dimensions 160x140x52 mm.
 
- Cable distance between AUI 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.
 
 
 |