User Manual

Table Of Contents
Document name:
OMU Commands and Attributes 1.0.0 v1.0
Version:
1.0
where OLC1:1..OLC4:6 replies with received optical level in dBm with one decimal
resolution for fiber optic masters in <rack 1, slot 1> .. <rack4, slot 6>.
If level is lower than lowest detectable, '<[LowDet]' is replied.
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 OLV
Reply:
-7.1 -7.5 -8.3 -6.2 -6.6 - -11.2 -10.1 - - - - - - - - - - - - - - - -
meaning that received optical level is from -6.2 to -11.2 dBm. In this example, knowing
that optical transmitted level is 3 dBm, optical loss is varying from 9.2 to to 14.2 dB.
7.4 OMP – Opto Master Parameters
Displays different parameters on the optical master.
7.4.1 Usage
Attribute type: Read only
This attribute replies with parameters and constants of the FiberOptic Master. Values are
used by the repeater to perform calculations and to present user with opto master
performance data.
Format:
GET OMP <Rack>:<Slot>
Reply:
<Rx Opto LowDet> <Pilot Offset Attenuation> <Pilot LowDet> <PilotARFCN>
where
<Rx Opto LowDet> is the lowest detectable received opto signal in dBm with one
decimal resolution.
<Pilot Offset Attenuation> is a frequency offset in dB set during production of the
repeater, and is used to compensate for frequency variations in the opto module.
<Pilot LowDet> is the lowest detectable pilot tone level in dBm with one decimal
resolution.
<PilotARFCN> is the channel used for the pilot tone.
Note! If data is not available (communications error with note, or wrong configuration),
four dashes separated by space are replied.
Example:
GET OMP 3:6
Reply:
-15.0 3 -50.0 500
indicating that for fiber optic module in rack 3, slot 6, lowest detectable optical level is
-15.0 dBm, pilot tone offset is 3 dB, lowest detectable pilot tone is -50.0 dBm and
ARFCN used for generated pilot tone is 500.
7.5 PTL – Pilot Tone Level
This attribute replies with received pilot tone levels from optical slaves.
7.5.1 Usage
Attribute type: Read only
This attribute replies with received pilot tone level from optical slave unit. This value is
used during automatic optical loss compensations to ensure that the repeater system is
commissioned with optimal performance.
Format:
<PTL:1:1> .. <PTL1:6> <PTL2:1> .. <PTL4:6>
where PTL1:1..PTL4:6 replies with received pilot tone level in dBm with one decimal
resolution for fiber optic masters in <rack 1, slot 1> .. <rack4, slot 6>. If lower than
lowest detectable pilot tone level, a <[Lowest Detectable Pilot Tone Level] is presented.
23(45)