User's Manual

Canopy 900 MHz AP and SM User Guide
Issue 2 August, 2004 Page 15 of 16
3 900 MHz AP and SM Specifications
Specification
Canopy System Range
Frequency Band Ranges
902 to 928 MHz (ISM)
Access Method
TDD/TDMA
Signaling Rate
3.3 Mbps
Modulation Type
High-index 2-level FSK (Frequency Shift Keying)
(Optimized for interference rejection)
Carrier to Interference (C/I)
Less than 3 dB nominal
Receiver Sensitivity
-90 dBm typical
Operating Range
Up to 40 miles (64 km) Line-of Sight
Increased foliage penetration Non Line-of-Sight
Transmitter Power
Up to 0.63 W (28 dBm) (when the antenna gain is entered as 8 dBi in
the user interface)
Effective Isotropic Radiated
Power (EIRP)
Up to 4 W (36 dBm) (when the antenna gain is entered in the user
interface consistent with the actual attached antenna, for example, set to
10 dBi for a 10 dBi antenna)
Subscriber Flat Panel
Antenna
10 dBi gain.
Vertically or horizontally polarized (changed by physical position),
approximately 60° horizontal x 60° vertical 3 dB beam width.
Horizontal polarization is recommended, since most cellular and paging
systems (which use adjacent frequency bands) use vertically polarized
antennas.
DC Power (measured at DC
converter)
For both AP and SM: Typically 0.3 A @ 24 VDC (7.2 watts)
For AP: May reach 0.35 A @ 24 VDC (8.4 watts) under heavy load
(high transmit ratio (set by downlink percentage), high packet
throughput)
Ethernet, GPS sync, and GPS
coax cables
The use of cables that are rated for the operation temperature of the
product and that conform to UV light protection specifications is
mandatory. The use of shielded cables is strongly recommended,
especially on infrastructure (APs).
Interface
10/100BaseT, half/full duplex.
Rate auto-negotiated (802.3 compliant).
Protocols Used
IPv4, UDP, TCP, ICMP, Telnet, HTTP, FTP, SNMP, DES.
Optionally, AES.
Protocols Supported
Switched Layer 2 Transport with support for all common Ethernet
protocols, such as IPv6, NetBIOS, DHCP, IPX.
Software Upgrade Path
Remotely downloaded into flash memory