Section 150-232-100
Revision 01
Page 19
7. INSTALLATION
7.01 Upon receipt of the equipment, visually inspect it for signs of damage. If the equipment has been damaged in
transit, immediately report the extent of damage to the transportation company and to PairGain Technologies.
7.02 The HLU-232 mounts into a PairGain HSA-232 Shelf Adapter. This combined assembly is then installed into a
220-configuration Office Repeater Bay (ORB) shelf or equivalent Small Cross Section Shelf (SXSS), Kentrox T-
Term, Wescom 342-30 shelves, or PairGain HCS-418 (19”) or HCS-417 (23”) shelves. The HLU-232 slot pin-outs
are shown in Figure 5.
7.03 The ALM option must be disabled (DIS) when using the Kentrox 220 T-Term shelf. This is required to resolve
a conflict between the HLU alarm relay output and the Kentrox external equalizer output. Both use the same pins, 20
and 21.
H LU -232
-4 8 V B AT
3 9
3 2
2 1
2 0
4 6
2 3
2 8
2 6
2 7
3 4
3 5
4 3
4 2
4 9
TX
R X
5 0
15 , 1 6, 1 9
J 1
G N D
H LU -232
F R O N T PA N E L
R S -2 32 IN T E R FA C E
H S A-232
B AC K P LA N E
IN TE R FA C E
TX
R X
G N D
R S2 32
P O W ER
A LAR M
H D S L I/O
D S 1 I/O
P R O TE C T
S W IT C H
C O N T R O L
P 3
1 8
2 3,25
26
12
14
22
30
11
1
2
27
28
10
9
16
15
6
5
4
8
13
7
21
19
17
29
J3
2
3
5
H E A LTH
W AT C H D O G
R LY D RV O U T
R D RV
TE R M _O U T
TE R M _E N D _ 1
TE R M _E N D _ 2
P R I_R E D -
D S 1 R _T IP
D S 1 R _R IN G
D S 1 T_ TIP
D S 1 T_ R IN G
D S 1 T_ TIP _S W
D S 1 T_ R IN G _S W
H D S L _R IN G _ B
H D S L _T IP _ B
H D S L _R IN G _ A
H D S L _T IP _ A
B U R N _IN -
2 32 _ID
N M A -B U S
F _A LM _O U T
R LY C 1
R LY C 2
PR O TE C T
S W ITC H
IN TE R N AL
IN T ER FAC E
Figure 5. HLU-232, List 1D Pin-Outs. HLU-232 I/O pins and associated 220 shelf back plane pins.
