Loop Attenuation And Insertion Loss; H2Tu-C-202 Card-Edge Connector; H2Tu-C-202 List 2F Card-Edge Connector - ADC H2TU-C-202 User Manual

Appendix A - Specifications
L A
OOP TTENUATION AND
Each loop has no more than 35 dB of insertion loss at 196 kHz, with driving and terminating impedances of 135Ω,
as shown in Table 27
Cable Gauge
26/0.4 mm
24/0.51 mm
22/0.61 mm
19/0.91 mm
(a) Insertion Loss = 1.25 times loop attenuation
H2TU-C-202 C
Figure 35 shows the card-edge connector on the H2TU-C-202. Active pins are highlighted in black.
Burn in /
* Chassis ground may be connected to Earth ground per local practice.
The HDSL2 span is accessed on pins 55 and 49 which are assigned to Loop 2 in 4W HDSL
circuits.
64
I
NSERTION
below. This is equivalent to a maximum of 28 dB loop attenuation.
Table 27. HDSL2 Reach Chart
(a)
Insertion Loss at
196 kHz (dB/kft)
3.88
2.84
2.18
1.54
-E C
ARD DGE ONNECTOR
56
54
52
50
48
Management bus
46
44
42
40
38
36
34
32
30
28
Alarm
26
24
22
Factory use only
20
18
16
14
12
10
8
6
4
2
Figure 35. H2TU-C-202 List 2F Card-Edge Connector
October 25, 2002
L
OSS
Loop Attenuation Maximum Reach
(dB/kft)
3.1
2.2
1.7
1.2
55 Ring
53
HDSL2 Span
51
Tip
49
47 Ring 1
45
DSX-1-RCV
43
41
Tip 1
39
37
( - )
35
33
31
29
27 Chassis ground*
-48Vdc Local power
Fuse alarm
25
23
21
19
( + )
17 Circuit ground
15
13 Ring
11
DSX-1-XMT
9
7
Tip Tip
5
3
1
LTPH-UM-1072-03
Ω
per kft
(kft)
9 83
12 52
16 32
23 16
H2TU-C-202 List 2F