Radwin 2000 Series - Page 213

HSS Error Notification Chapter 10
RADWIN 2000 User Manual Release 2.6.40 10-7
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:
L
mn
denote the length of the ODU-HSS unit cable at SYNC n on HSS unit m
H
m
be the length of the cable joining HSS unit m to HSS unit m+1
One HSS unit with five collocated ODUs
Two cascaded HSS units as shown in
Figure 10-7
Three cascaded HSS units as shown in Figure 10-8
HSS Error Notification
In the event of an HSS installation fault, the ODU will sound a beep pattern according to the
following chart, also printed on the ODU product label:
Figure 10-9: ODU beep for HSS Error
PathLength L
11
2 L
12
2 L
13
+ 2 L
14
L
15
+++=
PathLength L
11
2 L
12
2 L
13
2 L
14
+
2
+
L
15

+
H
1
2 L
29
2+ L
28
2+ L
27
 L
26
+
+
++
=
PathLength L
11
2 L
12
2 L
13
2 L
14
+
2
+
L
15

+
H
1
2 L
29
2+ L
28
2+ L
27
 2 L
26
+
H
2
2 L
32
2 L
33
2 L
34
L
35
+++
+
++ +
+
=