Loop Attenuation, Insertion Loss, And Reach; H4Tu-C Card-Edge Connector - ADC HiGain H4TU-C-388 List 5A User Manual

Appendix A - Specifications
M C
AXIMUM URRENT
The maximum current drain is the maximum current drawn from the shelf power supply when its at its minimum
voltage (-42.5 ). This determines the shelf fusing requirements. Use the -42.5 Vdc current data in
Vdc
page 53 to determine the shelf fusing requirements for your particular H4TU-C applications.
L A
OOP TTENUATION
For Span 1, each loop has no more than 47 dB of insertion loss at 196 kHz, with driving and terminating
impedances of 135Ω, as shown in
For Span 2 and Span 3, each loop has no more than 43 dB of insertion loss at 196 kHz, with driving and
terminating impedances of 135Ω. This is equivalent to no more than 29 dB loop attenuation. The 3-span system
should be locally powered to achieve this maximum reach.
Insertion Loss
Cable Gauge
196 kHz (dB/kft)
26/0.4 mm
24/0.51 mm
22/0.61 mm
19/0.91 mm
(a) Insertion Loss = 1.5 times loop attenuation
H4TU-C C -E
ARD
54
D
RAIN
, I
NSERTION
Table 21 below. This is equivalent to no more than 31 dB loop attenuation.
Table 21. HDSL4 Reach Chart
(a)
at Loop Attenuation
(dB/kft)
3.88 2.8
2.84 2.0
2.18 1.6
1.54 1.1
C
DGE ONNECTOR
219
GND 218
-48Vdc 217
216
215
214
213
212
211
210
209
208
207
206
205
204
203
202
201
200
* Fuse alarm is normally floating (0 to 80 Vdc maximum) and
at -48 Vdc (10 mA maximum) when activated.
Figure 32. H4TU-C Card-Edge Connector
October 15, 2003
L , R
OSS AND EACH
Maximum Reach (kft)
Span 1
12
16
21
29
Frame GND
119
118 GND
117 Fuse alarm*
116
Ring1
115
DSX-1 RCV (OUT)
114 Tip1
113
112
111
110 Ring
DSX-1 XMT (IN)
109 Tip
108
107 Factory burn-in
106 Ring1
HDSL4-L2
105
Tip1
104 Factory use
103
102
Ring
HDSL4-L1
Tip
101
100
LTPH-UM-1252-01
Table 20 on
Maximum Reach (kft)
Ω
Span 2 and Span 3
11.0
15.0
20.6
27.8
H4TU-C-388 List 5A
per kft
83
52
32
16