ADTRAN AHDSL2 specifications HDSL2 Loss Values, Loop Insertion Loss Data, Maintenance

Loop loss per kft for other wire is summarized in

Table 11.

Table 11. HDSL2 Loss Values

			Temperature (°F)
Cable Gauge	Cable Type	68°	90°	120°
26	PIC	3.902	4.051	4.253
26	Pulp	4.030	4.179	4.381
24	PIC	2.863	2.957	3.083
24	Pulp	3.159	3.257	3.391
22	PIC	2.198	2.255	2.333
22	Pulp	2.483	2.450	2.629
19	PIC	1.551	1.587	1.634
19	Pulp	1.817	1.856	1.909

Table 12 provides the recommended maximum local loop loss information for PIC cable at 70ºF, 135 ohms, resistive termination.

An approximation for the maximum amount of wideband noise on an HDSL2 local loop as measured by a 50 kb filter is < 31 dBrn.

An approximation for the maximum level of impulse noise as measured using a 50 kb filter on an HDSL2 loop is < 50 dBrn.

Table 12. Loop Insertion Loss Data

	Frequency (Hz)	Maximum Loss (dB)
3,000		12.0
10,000		15.0
50,000		25.5
100,000		30.0
150,000		32.75
196,000		35.0
200,000		35.25
250,000		37.50
325,000		42.00

NOTE

These approximations are to be used as guidelines only and may vary slightly on different loops. Adhering to the guidelines should produce performance in excess of 10-7BER.

For further information regarding deployment guidelines, and applications, reference ADTRAN’s Supplemental Deployment Information for HDSLx, document P/N 61221HDSLL1-10.

5. MAINTENANCE

The ADTRAN Litespan H2TU-C requires no routine maintenance. ADTRAN does not recommend that repairs be performed in the field. Repair services may be obtained by returning the defective unit to the ADTRAN Customer and Product Service (CAPS) department.

61221002L2-5B 9