User Manual

Table Of Contents
Document name:
OMU Commands and Attributes 1.0.0 v1.0
Version:
1.0
Level) that was needed to complete adjustment.
<Result String> is a quoted string containing additional information about measurement
or reason for failure.
Example:
GET OLA 1:6
Reply:
0 144503 220507 144511 220507 23 25 -314 3 “Pilot tone adjusted to -31.4
dBm, procedure completed.”
indicating result for last adjustment.
If no adjustment has been performed, a '-' (dash) is reported instead.
Note! In order for opto adjustments to work, what node is installed as slave repeater must
be known. This is configured using the attribute NCP ( Node Communications Path ).
7.2 OLC – Optical Loss Compensation
Displays (and optionally configures) compensation for optical loss for all fiber optic
masters in the system..
7.2.1 Usage
Attribute type: Read and Write
During automatic optimization of the FiberOptic link, the node master reads the received
pilot tone level and compensates for the optical loss. This is to ensure that the input RF
level from the Optical Slave Unit is at the correct level to obtain the correct system gain.
Format on getting parameter:
<OLC:1:1> .. <OLC1:6> <OLC2:1> .. <OLC4:6>
where OLC1:1..OLC4:6 indicates attenuation in dB configured for fiber optic masters in
<rack 1, slot 1> .. <rack4, slot 6> to obtain optimal uplink performance of the system.
If optical master is not configured, a '-' (dash) is reported in corresponding position.
Example:
GET OLC
Reply:
10 10 9 10 8 - 10 11 10 - - - - - - - - - - - - - - -
indicating optical loss attenuation for installed opto masters.
Note! This parameter should normally be adjusted during commissioning, and not
changed afterwards.
Format on setting parameter:
SET OLC <Rack>:<Slot> <Atten>
where <Rack> indicates rack number from 1 to 4, and <Slot> indicates slot from 1 to 6
within rack.
<Atten> is the desired attenuation in dB. Valid range is 0 to 25 dB.
Example:
SET OLC 2:1 18
adjusts the attenuation in FiberOptic Master unit in rack 2, slot 1 to 18 dB.
7.3 OLV – Optical Level
Replies with optical signal level as received from the optical slave units.
7.3.1 Usage
Attribute type: Read only
Knowing the fixed optical transmission level of the optical slave unit and measuring the
received optical level, it is possible to calculate optical loss between slave and master
unit.
This attribute displays the received optical level in dBm.
Format:
<OLV:1:1> .. <OLV1:6> <OLV2:1> .. <OLV4:6>
22(45)