Chapter 16
Performing RFoCPRI Testing
618
JD700B Series User’s Guide
-
Data Allocation Map
◼
Power Statistics CCDF
Connecting cables
You can connect cables with a tap or without a tap as illustrated in Figure 376. If you have connected cables
directly from RRH and BBU without using the nTap, you must turn on the through mode (Thru) in the CPRI
parameter settings.
A SFP/SFP+ transceiver that is connected to your JD700B series must be compatible with your DUT and
you must have your module information such as line rate, wavelength, and mode (MM or SM) handy.
Figure 376 Connection diagram for downlink signal analysis
With nTap (both Thru On/Off):
Without nTap (Thru On only):
Selecting measurement mode
Procedure
1
Press the
MEASURE
hot key.
2
Select
Signal Analyzer > LTE-TDD
.
3
Select the downlink signal analysis mode from the following choices:
Spectrum
RF Analysis > Channel Power
or
Occupied BW
Power vs Time (Frame)
Modulation Analysis > Constellation
,
Data Channel
,
Control Channel
,
Subframe
,
Time Alignement Error
, or
Data Allocation Map
Power Statistics CCDF
Selecting port
JD700B series supports two antenna ports for signal transmission, and each port can generate different
waveforms selectively and simultaneously. User can select the port to use for the measurement in any
measurement mode 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.