Chapter 16
Performing RFoCPRI Testing
550
JD700B Series User’s Guide
Selecting port
JD700B series supports two antenna ports for signal transmission, and each port can generate up to four
different waveforms selectively and simultaneously. User can select the port to use for the measurement in
any measurement modes of RFoCPRI mode.
Procedure
1
In any measurement mode, press the
MEASURE SETUP
hot key.
2
Toggle the
Select Port
soft key between
Port 1
and
Port 2
to select the desired port.
Setting measure setup
Procedure
1
Press the
MEASURE SETUP
hot key
2
To set the CPRI line bit rate of the fronthaul under test, complete the following steps:
Press the
Link Rate
soft key.
Select the CPRI link rate option from:
614.4 Mbps
,
1228.8 Mbps
,
2457.6 Mbps
,
3072.0 Mbps
,
4915.2 Mbps
,
6144.0 Mbps
, or
9830.4 Mbps
.
NOTE
It is important that you set the link rate correctly to avoid any misleading LOS and LOF
alarms displayed on the screen.
Setting Rx optic limit
A RRH has a finite dynamic range for input optic power and it can cause an abnormal behavior of the RRH if
the optical power is weaker than certain level. To differentiate intermittent low optic power issues from any
RSSI, interference and signal quality issues, it is important for you to monitor the input optic power level
during the monitoring of the spectrum and the signal quality. Using this Rx optic limit feature, you can set
lower and upper limits and monitor the Rx optic level with Pass/Fail indication in green and red colors.
Procedure
1
Press the
LIMIT
hot key.
2
Press the
Rx Optic Level
soft key.
3
Set a threshold for
High Limit
and
Low Limit
.
4
To enable the Rx optic limit, toggle the
Test Limits
soft key to
On.
If the optic power level falls out of the specified thresholds, the color of the power reading or
indicator turns red.
5
To disable the Rx optic limit, toggle the
Test Limits
soft key to
Off.
Conducting layer 2 monitoring
After you have configured test parameters, you can monitor the alarms of the Layer 1 as you desire.
Procedure
1
Monitor the following alarm indicators and the optical signal level. Green dots indicate no
occurrence of an alarm while red ones mean occurrence(s).
LOS:
Loss of Signal (code violation or low optical power)
LOF:
Loss of Frame (frame synchronization or alignment)
Содержание CellAdvisor JD700B Series
Страница 2: ...CellAdvisorTM JD700B Series FW3 120 User s Guide ...
Страница 105: ...Chapter 4 Using Spectrum Analyzer 104 JD700B Series User s Guide Figure 44 PIM detection for multiple carriers ...
Страница 406: ...Chapter 11 Using EV DO Signal Analyzer JD700B Series User s Guide 405 3 Pilot 4 MAC 64 5 MAC 128 ...
Страница 734: ...Chapter 18 Perfroming BBU Emulation JD700B Series User s Guide 733 Figure 441 Example of verification of link status ...
Страница 763: ...Chapter 21 Performing Fiber Inspection 762 JD700B Series User s Guide Figure 461 Fiber inspection report ...
Страница 808: ...Appendix JD700B Series User s Guide 807 JD740B series ...
Страница 811: ...Appendix 810 JD700B Series User s Guide Figure 470 Append keywords window ...