Patton electronic 3088 Series user manual S1-7 and S1-8 Line Build Out Models 3088/K and 3088/T

Model 3088 Series User Manual 2 • Configuration

S1-7 and S1-8: Line Build Out (Models 3088/K and 3088/T)

Switches S1-7 and S1-8 define the shape of the waveform on the T1 or E1 line, as shown in table 15.

Table 15. S1-7 – S1-8: Line Build Out Settings

S1-7	S1-8	Line Build Out (E1)	Line Build Out (T1)
ON	ON	Pulse-75 Ohm	0.0dB
OFF	ON	Pulse-120 Ohm	-7.5 dB
ON	OFF	Not Applicable	-15.0dB
OFF	OFF	Not Applicable	-22.5dB

Note 75 Ohms corresponds to the BNC connectors on Model 3088/K.

120 Ohms corresponds to the T1/E1 (RJ-45) interface on Models 3088/K and 3088/T.

S2-2 Line Code (Models 3088/K and 3088/T)

Switch S2-2 defines the T1 or E1 network line coding.

Table 16. S2-2 Line Code Switch Settings

S2-2	T1 Line Code	E1 Line Code
ON	AMI	AMI
OFF	B8ZS	HDB3

S2-3: Annex A/B (Models 3088/K and 3088/T)

Annex A is typically used in North American-like networks, whereas Annex B is typically used in European- like networks. The different annexes specify different PSD (power spectral density) masks because of the differ- ence in T1 and E1 PSDs.

Table 17. S2-3 Annex Type settings

S2-3	Annex
ON	A
OFF	B

S2-4 through S2-5: Clock Mode (Models 3088/K and 3088/T))

The RocketLink-G can operate in one of three clock modes: internal, network, or receive-recover.

Table 18. S2-4 and S2-5 Clock Mode Settings

S2-4	S2-5	Clock Mode	Description
ON	ON	Internal	The on-board oscillator in the 3088 provides clock for both T1/E1
			and DSL lines.
OFF	ON	Network	3088 uses the RX clock from the T1/E1 interface as the clock for
			the DSL link.
ON	OFF	Receive-Recover	3088 uses the RX clock from the DSL interface as the clock for the
			T1/E1 line.

Introduction 31