Motorola BSR 2000, Configuration And Management Manual

Page: 219 / 650

Release 1.0 Configuring the CMTS
526360-001-00 Rev. B MGBI 6-33
■
Storing FFT Power Level Measurement Data
■
Displaying FFT Power Level Measurement Data
Configuring FFT
The fft setup command can be used to configure the FFT processor on the BCM3138/
BCM3140 chip set or to display the current FFT processor configuration.
Configuring the FFT Processor
Use the fft setup command, in Privileged EXEC mode, to configure the FFT
processor, as follows:
MOT#
fft setup <
Slot
/
Port>
[ sample {<
256
-
2048
>} mode { Tap-in } window
{ blackman | blackman-harris | hamming | hanning | rectangular }]
where:
Slot
is always 0 for the BSR 2000.
Port
is a valid upstream port number.
sample
256
-
2048
is the number of samples of the power level measurement. The
default is 2048.
mode Tap-in is the RF Sentry’s operational mode
window is the window coefficient to shape the output of the power level
measurement ( rectangular , hamming , hanning , blackman , or
blackman-harris ). The default is rectangular .
Displaying the FFT Processor Configuration
Use the fft setu p <
Slot
/
Port>
command, without any additional arguments, to display
the current FFT processor configuration for a particular port on a particular CMTS
module, as follows:.
MOT#
fft setup <
Slot
/
Port>
where:
Slot
is always 0 for the BSR 2000.
Port
is a valid upstream port number.