Nokia DNT2Mi sp/mp user manual Give line rate 6,3,3,1,2,n 6,3,3,1,4,n

Using Q1 menus

•Give line rate (6,3,3,1,2,n; 6,3,3,1,4,n)

This setting defines the maximum achievable bit rate in the line only if the STU-C option is taken into use.

In the 4-wiremode, only even numbers for n are allowed (n = 6, 8, 10...32).

Power backoff (6,3,6)

•ON (6,3,6,1)

Select this option to enable transmit power reduction on short loops. The transmit power is reduced as a function of the line power loss shown in Table 16.

Table 16. Function of the line power loss

Power loss (dB)	Power backoff (dB)
PL > 6	0
6 ≥ PL > 5	1
5 ≥ PL > 4	2
4 ≥ PL > 3	3
3 ≥ PL > 2	4
2 ≥ PL > 1	5
1 ≥ PL > 0	6

•OFF (6,3,6,2)

Select this option to disable transmit power reduction.

Line length

The maximal performance shown in Figure 77 is measured in ideal circumstances with the VMOHBU 0.4 mm cable. In a real case, you should reserve 3-6 dB noise margin due to changing circumstances in the line.

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