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Page 37
Chapter 5: Configuration
Table 5-2 (continued). S Register settings.
y < command
command name > x Description
S109
Hop Interval
This register is effective only on the Master and is responsible for establishing the rate
at which all modems within a particular network change frequency (hop—from fre-
quency to frequency).
Long hop intervals typically result in the greatest data throughput; however, shorter
hop intervals may decrease latency, particularly of smaller packets of data.
The default setting of 20 ms is satisfactory for most applications. If you plan to adjust
S109, also consider the serial baud rate, wireless link rate, and maximum packet size
(S102, S103, and S112).
NOTE: Hop Interval S109 should only be changed if recommended by Technical
Support and/or for specific applications.
Hop Interval (S109) Standard Values.
S109
time (ms)
S109 time (ms)
0
1.5
10
30
1
2.0
11
40
2
2.5
12
50
3
3.0
13
60
4
4.0
14
70
5
5.0
15
80
6
7.0
16
90
7
10
17
100
8
15
18
125
9
20
19
150
Hop Interval (S109) Extended Values.
S109 time (ms) S109 time (ms) S109 time (ms)
20
4.5
32
12
44
18.5
21
5.5
33
12.5
45
19
22
6.0
34
13
46
19.5
23
6.5
35
13.5
47
21
24
7.5
36
14
48
22
25
8.0
37
14.5
49
23
26
8.5
38
15.5
50
24
27
9.0
39
16
51
25
28
9.5
40
16.5
52
26
29
10.5
41
17
53
27
30
11
42
17.5
54
28
31
11.5
43
18
55
29
NOTE: Values shown in Tables may not be available in all versions.
