Hoptime [Xshort, 16, 20, 25, 32, Short, Normal, Long] - Microwave Data Systems MDS 9810 Installation And Operation Manual

40 MDS 9810 Installation and Operation Guide
These node types are needed for repeater sub-networks and simplex
sub-networks where simplex frequencies are used. See the Net-
work-Wide Diagnostics System Handbook (05-3467A01) for an expla-
nation of these node types.

HOPTIME [XSHORT, 16, 20, 25, 32, SHORT, NORMAL, LONG]

The command sets or displays the hop time setting. The com-
HOPTIME
mand is one of eight keywords whose parameters and related efficien-
cies are shown in Table 7.
Although the default setting is
ciency can usually be improved by using
sizes typically exceed 256 bytes. This is because there will be less fre-
quent channel hops when using this setting, contributing to a smoother
flow of transmitted data.
Table 7. Hoptime Parameters
Hop Time
Keyword
XSHORT
16
20
25
32
SHORT
NORMAL
LONG
Normally,
HOPTIME NORMAL
Other hoptimes can be used to customize performance based on SEND
count settings and payload data poll length.
The only time shorter settings (
sidered is when the message size is very small and strong interference
of a persistent nature is occurring on many frequencies. In these cases,
a shorter hop time may improve the chances of a message getting
through—but at the cost of reduced channel efficiency.
Changes to the
HOPTIME
(This is because the master radio establishes the hop time setting for the
entire network.) At remote radios, the hop time setting may be read
when the radio is in synchronization with the master, but it may not be
changed.
HOPTIME NORMAL
HOPTIME LONG
Time Max.
per Bytes
Hop per Hop
10 ms 9
16 ms 21
20 ms 30
25 ms 39
32 ms 57
40 ms 72
80 ms 162
160 ms 336
and are the only settings required.
LONG
through
SHORT
setting may only be made at the master radio.
, transmission effi-
when message
Channel
Efficiency
32.1%
46.7%
53.6%
55.7%
63.3%
64.3%
72.0%
74.5%
) should be con-
XSHORT
MDS 05-3301A01, Rev. C