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ODU/HSS Unit Connection Pinout
Figure 10‐5: Cascading three HSS units
6. If further ODUs are required, observe the convention that additional even
numbered units are populated in descending order from SYNC 9 and odd
numbered HSS units are populated in ascending order from SYNC 2.
If an ODU is disconnected from an HSS unit, then all remaining ODUs must
be moved up or down in order to maintain the connectivity.
Condition 2: Total HSS Cable Length
The total path of the HSS sync pulse must not exceed 300m. This applies no matter how many
HSS units are used. To illustrate the method for calculating the sync pulse path length we
show three examples. For our purpose, let:
Lmn denote the length of the ODU‐HSS unit cable at SYNC n on HSS unit m
Hm be the length of the cable joining HSS unit m to HSS unit m+1
One HSS unit with five collocated ODUs
PathLength
L
2 L
=
+
11
Two cascaded HSS units as shown in Figure 10‐4
PathLength
L
2 L
=
+
11
L
H
2 L
2
+
+
+
15
1
29
Three cascaded HSS units as shown in Figure 10‐5
PathLength
L
2 L
=
+
11
L
H
2 L
2
+
+
+
15
1
29
H
2 L
2 L
+
+
+
2
32
33
10.3 ODU/HSS Unit Connection Pinout
See Table
D‐3.
RADWIN 2000+ Series User Manual
L
2 L
+
2
+
12
13
14
L
2 L
+
2
+
12
13
14
L
L
L
2
+
2
+
28
27
26
L
2 L
+
2
+
12
13
14
L
L
2 L
2
+
2
+
28
27
2 L
L
+
34
35
Release 4.2.40
L
+
15
+
+
+
26
10‐5
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