ATL Telecom AM2048 - Manual (Page 19)

35 ATL TELECOM USER GUIDE
AM2048A
35
7.1 AC POWER INLET
AC power is fed via a standard 3 pin IEC socket. A power cord fitted with a country variant
mains plug is supplied with the unit. This should be plugged into a suitable power supply with
earth protection to provide ESD protection of the unit.
7.2 DC POWER INLET
DC power is fed in via the three-pin socket on the rear panel.
A connection from CGND to earth is required for ESD protection of the unit.
If the unit is line powered, the ground connection must be made to the earth bonding point
on the rear panel. (M3 stud).
Mating connector
Molex Minifit Junior Receptacle
Molex Part Number: 39-01-4031
Molex female contact Molex Part Number: 39-00-0039
The DC Power Cable can be ordered from ATL, ATL Part Number (See Appendix B).
CABLE AM2048A DC POWER 6/910/000/423
1
2
-48V
0V
3 CGND
2 1 3
7 I N T E R F A C E S
7
34 ATL TELECOM USER GUIDE
AM2048A
6.3.3 1-Pair With Noise Range on 04mm Wire
The AM2048 has been extensively tested for performance over a wide range of "with noise"
models with excellent results. The following are examples of these measurements to provide
general guidance to the performance quality.
These "with noise" measurements have been carried out with reference to, ETSI TS 101 524
V1.1.2 (2001-08), page 73, Table 12-3, Noise model C /ITU G.991.2 Annex B noise model C.
The physical lengths (L2) were used, to the nearest 50m, and the noise was increased until the
BER was in the order of 10-8. The results are as follows:
SPEED LENGTH (L2) of 0.4mm BER
2048kbps 2.15km 6.4x10 -8
1536kbps 2.45km 3.4x10 -8
1024kbps 3.05km 2.3x10 -8
768kbps 3.4km 2.6x10 -8
512kbps 4.2km 5.5x10 -9
NOISE MARGIN
5.4dB
5.2dB
5.0dB
5.9dB
3.8dB