H2Tu-C Card-Edge Connector; Fuse Alarm; System Alarm Output Pin - ADC HiGain H2TU-C-202 User Manual

LTPH-UM-1208-01
H2TU-C C -E
ARD
Figure 30 shows the pin assignments of the card-edge connector on the H2TU-C card. Active pins are shown in
black.
Burn in /
* Chassis ground may be connected to Earth ground per local practice.
** Active pins are solid black.

Fuse Alarm

Pin 25on the card-edge connector is a Fuse Alarm that is driven to -48 Vdc whenever its onboard fuse opens.

System Alarm Output Pin

Pins 22 and 30 on the card-edge connector, shown in
pins. The following notes apply to pins 22 and 30.
•
Pins 22 and 30 replace the Local Loss of Signal (LLOS) on standard repeaters.
•
The H2TU-C forces pins 22 and 30 to +5 Vdc (maximum of 10 mA) for a system alarm condition. Pins 22
and 30 then remain at +5 Vdc for the duration of the alarm condition.
•
The H2TU-C Status LED flashes red for the duration of a system alarm condition.
•
Setting the ALM option to DIS only prevents the system alarm bus on pins 22 and 30 from being activated
for a system alarm event. The Status LED still flashes red and the ALRM message still displays.
•
"System Alarms" on page 43
H2TU-C-202 List 7G
C
DGE ONNECTOR
56 55
54 53
52 51
50 49
Ring 1
48 47
Factory use only
46 45
44 43
42 41 Tip 1
40 39
38 37
( - )
36 35
34 33
32 31
30 29
28 27 Chassis ground*
Alarm
Fuse alarm
26 25
24 23
22 21
Factory use only
20 19
18 17 Circuit ground
16 15
Ring
14 13 Ring
12 11
10 9
8 7
Tip Tip
6 5
Tip
4 3
2 1
H0013-C
Figure 30. H2TU-C Card-Edge Connector
describes the system alarms that activate pins that activate pins 22 and 30.
June 6, 2003
DSX-1 OUT
-48Vdc Local power
( + )
DSX-1 IN
Figure 30 on page 51, are the H2TU-C System Alarm output
Appendix A - Specifications
HDSL2 Span
51