Motorola PTP 400 Series Manual De Usuario

 

 

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Spectrum Management uses this margin when making a channel hop 

decision. The channel to hop to has to have an interference level 3 dBs (default) better than 

the current active channel. Hopping Counter is used to record the number of channel hops. 

The number in the “(+ )” brackets indicates the number of channel changes since the last 

screen refresh. 

 

Indicates the number of automatic channel changes that have occurred. 

 When disabled this option constrains the link to operate symmetrically 

using the same transmit and receive channels. When in symmetric mode the slave unit will 

always follow the master. If the master moves to a new channel the slave will hop to the same 

channel. When the Point-to-Point link is configured as an asymmetric link both the master and 

slave are free to select the best channel from their own set of local interference metrics. 

(Default Enabled). 

 Spectrum Management uses the interference threshold to perform 

instantaneous channel hops. If the measured interference on a channel exceeds the specified 

threshold then Spectrum Management will instruct the wireless to immediately search for a 

better channel. If a better channel cannot be found, the PTP 400 Series Bridge will continue 

to use the current active channel. (Default –85 dBm) 

8.3.8.6 Barring 

Channels  

Channels can only be barred / unbarred by the system administrator from the master 

Spectrum Management web page. The barring / unbarring operations are disabled on the 

slave web page. If an attempt to bar / unbar a channel is made at the slave a warning dialog 

is generated.  

Barring / Unbarring of channels is performed by clicking the appropriate channel on the local 

or peer channel spectrum plots on the master web page. Each bar / unbar attempt will be 

proceeded by a conformation dialog. It should be noted that the channel bar will take effect 

immediately and is not related to the measurement quantization period.