User's Manual

Configure Remote Forward Gain
Page 92 FlexWave Prism Element Management System 7.1 User Manual
©
2011 ADC Telecommunications, Inc ADCP-77-177 • Issue 1 • July 2011
e In the Forward Gain list, select the dB (0 to 31).
The Forward Gain is the actual gain, not attenuation, that will be applied to
the RF forward path signal (where 0 = 0 dB gain, 1 = 1 dB gain, and so
forth). The Forward Gain is based on the EIRP desired at the antenna. You
therefore need to know how much cable, insertion, and any other loss (such
as splitters) exist between the Remote Unit and the antenna. Set the Forward
Gain to achieve the required output power level to meet the EIRP of your RF
link budget.
Configure the Host DART gain to achieve +5dB so that full scale output can
be achieved at the Remote. For further information, refer to the FlexWave
Prism commissioning guide.
f Refer to the following read-only fields for further information on the
selected PRU/URU:
• RF Power (dBm) column displays the measurement of the RF power for the
LPA identified in the LPA Number field.
NOTE: After a change in the DART Forward Gain, the EMS reflects the change in the RF Power
column within 25 seconds, or if the Refresh button is used, within 12 seconds.
• Max Power (dBm) column displays the maximum LPA power values.
• VSWR column displays the Voltage Standing Wave Ratio (VSWR) for the
LPA. An LPA VSWR Fault occurs if the VSWR measurement exceeds the
threshold, which is 3:1.