Installation guide

81
Cisco uBR7200 Series Universal Broadband Router Wireless Modem Card and Subsystem Installation and Configuration
78-6030-03
Command Reference
Example
The following example shows the command to display the histogram data for the histogram configured
on the modem card in slot 6, port 0 of the uBR for receive DSP 1a.
UBR04# show interfaces radio 6/0 histdata inr dsp dsprx1a
Histogram 4/1/8 [*=100] min=-2 avg=0
157 0=<0 **
137 0=<1 **
115 1=<2 **
44 2=<MAX *
Reading the Data
Some data returned by the DSPs can be more useful if you convert it to more meaningful values. Table 15
provides conversion formulas.
gainSettingsRF Represents the radio frequency (RF) attenuation value commanded by the
automatic gain control loop. This can be captured for each antenna and for the RF
module.
totalGain Represents the total attenuation commanded by the automatic gain control loop.
This can be captured for each antenna.
antenna_num Enter 1 (main antenna) or 2 (diversity antenna).
Note For every threshold defined, antenna_num is conditional. The attributes in,
receivedPower, GainSettingsIF, gainSettingsRF, and totalGain are
applicable for antenna_num.
dspnum The DSP number.
Note If the DSP number is not specified, the specification on the default DSP
will be displayed.
Table 15 Value Conversions
Parameter Units Reported (X) Units Conversion Formula
receivedPower 1 DSP Receive Signal Strength Same Same
totalGain 1 0.5 dB dB X/2
gainSettingIF 1 0.5 dB dB X/2
gainSettingRF 1 2
(-16)
dB dB X/2
16
constVariance 86016/(10
(0.1*SNRdb)
) SNR in dB 10 * log10(86016/X)
freqOffset 11.71875/2
16
kHz kHz X/5592.4
syncStatus No units Same Same
timingOffset In samples Same Same
receivedPower 2 DSP Receive Signal Strength Same Same