Ruckus Wireless ZoneFlex series, Руководство по установке

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Operating and Troubleshooting the 7781CM
Rebooting and Resetting the 7781CM
Rebooting and Resetting the 7781CM
Refer to “Appendix B: Rebooting and Resetting the 7781CM” on page 58 for instructions
on rebooting and resetting the AP and CM parts of the 7781CM.
How Radio Frequency Scanning Works
The 7781CM performs radio frequency scanning differently, depending on the 7781CM
model and the DOCSIS standard with which it is compliant (either DOCSIS, EuroDOCSIS
or Japan DOCSIS).
DOCSIS-Compliant 7781CM
The following steps describe how a DOCSIS-compliant 7781CM performs radio frequency
scanning:
1. Looks at the last “known good channel” (repeat this every 64 channel checks).
2. Checks the sixteen last known frequencies (repeat this every 32 channel checks).
3. Scans STD standard channels (where the center of the channel is an integer spaced by
6MHz), first [from 93MHz to 999MHz - 152 channels]).
4. Scans the harmonically related carrier (HRC) channels, which moves the channels
1.25MHz off the standard frequencies so the video carriers are all related by 6MHz [from
91.75 to 997.5MHz--152 channels].
A complete frequency scan requires approximately 469 channel checks. Since each
channel takes about 0.6 seconds, a full scan is done every 281 seconds (a little under
5 minutes).
EuroDOCSIS-Compliant 7781CM
The following steps describe how a EuroDOCSIS-compliant 7781CM performs radio
frequency scanning:
1. Looks at the last “known good channel” (repeat this every 64 channel checks).
2. Checks the sixteen last known frequencies (repeat this every 32 channel checks).
3. Scans generic channels (where the center of the channel is an integer spaced by
250kHz), first [from 112 MHz to 858.25 MHz--2986 channels]).
A complete frequency scan requires approximately 4526 channel checks and lasts
approximately 45 minutes.