User Manual

Table Of Contents
Document name:
OMU Commands and Attributes 1.0.0 v1.0
Version:
1.0
If value is not available (such as not FiberOptic Master not installed or configured, or
communications error with FiberOptic Master), a '-' (dash) is reported.
Example:
GET PTL
Reply:
<-50.0 <-50.0 <-50.0 <-50.0 - - -27.1 - - - - - - - - - - - - - - - - -
indicating that level of received pilot tone for the different modules are lower than lowest
detectable, except for module in position rack 1, slot 1, which has a level of-27.1 dBm.
This is the typical scenario when adjusting system in the uplink path, where only one
module at a time is transmitting the pilot tone.
7.6 PTN – Pilot Tone Nominal Level
This attribute replies with the nominal level for the received pilot tone level.
7.6.1 Usage
Attribute type: Read only
This attribute replies with the nominal pilot tone level that should be received from the
slave node when a system is properly commissioned. This value serves as the value that
received pilot tone should be adjusted to in order to have an optimized system.
Format on getting parameter:
GET PTN
Reply:
<PTN>
where <PTN> is nominal level in dBm * 10.
Example:
GET PTN
Reply:
-250
meaning that nominal pilot tone level is -25.0 dBm.
8 RF-RELATED CONFIGURATIONS
8.1 ATD – Attenuation Downlink
Reads and configures attenuation in the downlink path.
8.1.1 Usage
Attribute Type: Read and Write
The input attenuation in the downlink path is used to adjust the input levels to the system
before being fed to the opto converters. By adjusting the attenuation correctly, maximum
range of the gain settings can be utilized in the fiber optic fed repeaters. It is possible to
set up a threshold to monitor that input signal level to the system is within desired
interval. If input signal level is below configured threshold, this means that output from
the repeaters also has dropped and that desired coverage is not achieved, causing an
alarm to be triggered.
Note! In order to read out actual received input levels, refer to attribute ILV. To read
status of input power level measurements, refer to attribute ILD and to set corresponding
alarm thresholds use attribute ALA ILD.
Format on getting parameters:
<Attenuation:1> <Attenuation:2> <Attenuation:3> <Attenuation:4>
where downlink attenuation for the different racks 1-4 are displayed. If rack is not
installed, a '-' (dash) is reported in corresponding position.
Example:
GET ATD
Reply:
24(45)