EXPRESS DAS
Installation and Operations Manual
108
EXPRESS DAS Installation and Operations Manual – Version 2.2 November 2013
12.5.2 Verify all Connections
1- Check the RF input and output cabling and connectors between the BIU and the signal source (BTS or
BDA) to verify all connections are attached properly.
2- Using a spectrum analyzer connected to the Monitor SMA ports at the front of the MDBUs, test the RF
input signal (Tx) for each frequency band and input. Depending on the signal, this value will range
between -20dBm to +10dBm per port.
3- Check the values in the management software in the Tx IN POWER field for each MDBU to verify they
match the results from the spectrum analyzer.
4- In the System Tree, check that all power and optical connections are working properly for both
headend and remote components. A green light indicates the connection is functioning.
5- Check that all headend and remote components are receiving power.
12.5.3 Set MDBU Parameters
1- Activate all input ports being used by selecting
ON
and then
SET
.
Turn off all ports not in use. If an unused port remains turned on, output power levels will be
impacted. If there is no input signal, the Tx IN power field will show the value -100dBm.
2- Once turned on, label the input ports by clicking in the label area. Each port name can be up to 12
characters. Press
SET
when you are done.
3- For each active MDBU, turn on Tx IN AGC by selecting
ON
and then
SET
. This will automatically turn
off once complete. This is a one-time setting to adjust the BIU gain against each BIU input level.
Figure 12.6 – Setting MDBU Parameters
5- Turn on Tx IN ALC by selecting
ON
and pressing
SET
.
6- Verify Rx OUT ALC is turned
OFF
.
Содержание EXPRESS Single-Carrier DAS
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