EXPRESS DAS
Installation and Operations Manual
112
EXPRESS DAS Installation and Operations Manual – Version 2.2 November 2013
5- Click
On
Tx OUTPUT ALC then click
Set
.
Once AGS is performed, the ALC (Auto Level Control) function will maintain the set target level.
6- Click
On
Tx OUTPUT SD then click
Set
to turn on the auto shutdown feature.
(See page 119 to learn more about this feature.)
7- Set the Tx ROU parameters for AGS, ALC, SD and TX OUT HIGH/LOW
levels according to the
requirements of your site.
8- Set the Rx ROU parameter for ATT levels depending on your requirements.
9- Set Rx IN ALC level to -50dBm.
12.6
System Acceptance
Before the DAS goes live, you can validate that you have successfully completed the commissioning
process and all components are functioning properly by checking signal levels for both the uplink and
downlink paths as shown in the following figures. The table shows suggested link budget values, which
will vary according to the configuration and frequencies of your system.
The validation process requires a signal generator and a spectrum analyzer. Set the spectrum analyzer
to: 10 kHz resolution bandwidth, 3 kHz video bandwidth, 1 MHz frequency span.
NOTE
: During system acceptance, make sure the system is operating within the recommended
frequencies according to each band. See the table on page 11.
Содержание EXPRESS Single-Carrier DAS
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