User manual

AP User Manual January 2004
Software Release 4.1
4. Turn off updating in a telnet session to the AP, as shown in Figure 21.
RESULT: All SMs that are registered to the AP are upgraded to the later release.
> telnet 172.16.1.1
Trying 172.16.1.1...
Connected to 172.16.1.1.
Escape character is '^]'.
/---------\
C A N O P Y
Motorola Broadband Wireless Technology Center
(Copyright 2001, 2002 Motorola Inc.)
Telnet+> updateoff
Back on the original Telnet session:
13:15:40 UT : 11/10/03 : AutoUpdate currently Disabled.
Telnet+>
Figure 21: Telnet to AP to turn off SM auto-update
5.5 CHANNEL PLANS
For 5.2- and 5.7-GHz modules, 20-MHz wide channels are centered every 5 MHz. For 2.4-GHz
modules, 20-MHz wide channels are centered every 2.5 MHz. This allows the operator to
customize the channel layout for interoperability where other Canopy equipment is collocated.
Regardless of whether 2.4-, 5.2-, or 5.7-GHz modules are deployed, channel separation
between modules should be at least 20 MHz.
5.5.1 Physical Proximity
A BH and an AP that operate in the same frequency band should be separated by at least
100 feet (30 meters). At closer distances, the frame structures that these modules transmit and
receive cause interference.
A BH and an AP on the same tower, or separated by less than 100 feet (30 meters), require a
CMM. The CMM properly synchronizes all Canopy modules to prevent interference and desensing
of the modules.
NOTE: Cross-band deployment of APs and BH is the recommended alternative (for
example, a 5.2-GHz AP collocated with 5.7-GHz BH).
5.5.2 Spectrum Analysis
In Release 4.1 and later releases, the operator can
• use an SM as a spectrum analyzer.
• view a table that shows power level in RSSI and dBm for each frequency throughout
the entire 20-MHz range, regardless of limited selections in the Custom RF
Frequency Scan Selection List field of the Configuration page.
• select an AP channel that minimizes interference from other RF equipment.
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