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JD700B Series User’s Guide
Figure 388 RFoOBSAI analysis screen
Selecting measurement mode
Procedure
1
Press the
MODE
hard key.
2
Press the
RFoFiber
soft key.
3
Press the
RFoOBSAI
soft key. The Layer 2 Monitoring mode is set by default.
4
Press the
MEASURE
hot key, and then select the measurement mode option from the following
choices:
Layer 2 Monitoring
Layer 2 Term
Interference Analyzer > Spectrum
,
Spectrogram
,
RSSI
, or
Spectrum Replayer
PIM Detection > PIM Detection Single Carrier
,
PIM Detection Multiple Carriers
, or
Calculated PIM
Signal Analyzer > LTE-FDD > Spectrum
,
RF Analysis
,
P vs T (Frame)
,
Modulation Analysis
, or
Power Statistics CCDF
Performing layer 2 monitoring
The in-service Layer 2 Monitoring is used to monitor link maintenance errors of the physical layer (Layer 1)
of the RP3 bus protocol. It also verifies proper optical power levels of the received and transmitted signals.
Connecting cables
The monitoring mode lets you perform in-service testing by using coupler(s) or nTap(s). You can connect
cables with a tap or without a tap as illustrated in Figure 389. If you have connected cables directly from
RRU and BBU without using the nTap, you must turn on the through mode (Thru) in the Measure Setup
menu.