Protocol Settings
R&S
®
EX-IQ-BOX
202
User Manual 1409.5570.32 ─ 05
Word Width
Indicates the word width. The word width depends on the CPRI line bit rate.
The following table shows the word width related to the line bit rate.
Table 7-12: Word width related to the line bit rate
Line bit rate [Mbit/s]
Word width [bits]
1x (614.4)
8
2x (1228.8)
16
4x (2457.6)
32
5x (3072.0)
40
8x (4915.2)
64
10x (6144.0)
80
16x (9830.4)
128
Note:
By determining the line bit rate, the DUT also defines the word width. See also
Remote command:
Ethernet Pointer
Indicates the resulting Ethernet pointer after the link setup, that means the position after
the handshake between the R&S EXBOX-B85 and the DUT.
You can determine this parameter in the C&M tab, which is embedded in the CPRI pro-
tocol. RE and REC then read the value of the other, and agree on the smallest.
Valid entries range from 20..63. Depending on the line speed and the pointer the following
Ethernet bit rates are achievable:
Line rate
[Mbit/s]
Length of control word
[bit]
min. Ethernet bit rate
[Mbit/s]
max. Ethernet bit rate
[Mbit/s]
1x (614.4)
8
0.48
21.12
2x (1228.8)
16
0.96
42.24
4x (2457.6)
32
1.92
84.48
5x (3072.0)
40
2.40
105.60
8x (4915.2)
64
3.84
168.96
10x (6144.0)
80
4.80
211.20
16x (9830.4)
128
7.86
337.92
Remote command:
CPRI
Summary of Contents for EX-IQ-BOX
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