2-5
Because location distance and external conditions of each ONU are different, the received signal
maybe strong or weak. AGC time is the time used by the OLT to automatically restore the strength
of the received signal to an acceptable level.
CDR time is the time used by the OLT to synchronize the phase and frequency of received
signals.
ONU laser on time is the interval between when the ONU laser is turned on and when it becomes
stable. ONU laser off time is the interval between when the ONU laser is turned off and when it
becomes stable.
Examples
# Display OLT capability information.
<Sysname> display epon-capability interface olt 3/0/1
OLT device capability information:
AGC lock time(TQ): 14
CDR lock time(TQ): 20
# Display ONU capability information.
<Sysname> display epon-capability interface onu 3/0/1:1
ONU device capability information:
Laser on time(TQ) : 32
Laser off time(TQ): 32
Grant FIFO deep : 8
Table 2-1 display epon-capability interface command output description
Field Description
AGC lock time(TQ): 14 AGC time, in TQ
CDR lock time(TQ): 20 Clock data recovery time, in TQ
Grant FIFO deep : 8
Grant queue depth, namely, size of the FIFO queue
(measured by the number of timeslots)
display epon-oam interface
Syntax
display epon-oam interface interface-type interface-number
View
Any view
Default Level
2: System level
Parameters
interface-type: Port type. It is ONU.
interface-number: ONU port number.
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