Anritsu MT8821C - Synchronizing Frame Timing Among 3 Cells

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Synchronizing Frame Timing among 3 Cells 2.3.2.
This chapter is only for the MT8820C.
The frame timing among three cells must be synchronized when connecting with LTE-Advanced (CA) LTE-Advanced
FDD DL CA 3CCs. Use three MT8820C units to connect with LTE-Advanced (CA) LTE-Advanced FDD DL CA 3CCs.
However, when making SISO measurement, the connection can be made using two MT8820C units (one of the two
units includes ParallelPhone measurement option).
<Using two MT8820C units (one of two units includes ParallelPhone measurement option)>
1. Connect the two MT8820C units as shown in the figure below.
Main1
Input/Output
RF In/Out
UE
Main1
Input/Output
10 MHz/13 MHz Ref In
Call Proc. I/O-1
Call Proc. I/O-1
10 MHz Buff Out
Phone1: PCC
Phone2: SCC-1
SCC-2
Main2
Input/Output
BNC cable
D-sub 15pin cable J1249
Connection Example for FDD DL CA 3CCs SISO Testing (using two MT8820C units)
2. [SCC-1] Execute ENTERSYNC INT_SLAVE to set the frame timing synchronization processing slave status.
3. [SCC-2] Execute ENTERSYNC EXT_SLAVE to set the frame timing synchronization processing slave status.
4. [PCC] Execute ENTERSYNC MASTER to perform frame timing synchronization processing.
5. [SCC-1/2] Execute ENTERSYNC? to query the call processing status.
6. [SCC-1/2] Check that the response of step 5 is 1 (synchronization established).