Motorola MICOM-2TS Spezifikationen PDF herunterladen (Seite 89)

MICOM-2E-ALE Owner’s Manual

occupancy. A 60-minute cycle would result in 40% occupancy. A 90-

minute cycle would result in 27% occupancy. A 120-minute cycle would

result in 20% occupancy.

It can now be decided which sounding cycle is the best for any

particular network, taking into account the trade-offs described above.

Under field conditions, the occupancy will usually be less than the value

obtained from the chart because not every station receives all the

soundings that are being broadcast on all channels. However, if the

system manager wants to increase channel-free time for the users by

reducing network occupancy, it is possible to do so through four

methods, listed below in their order of preference:

1. Increasing the sounding cycle time (to 90 or 120 minutes).

2. Reducing the number of channels in the network (for example, by

using different nets for different times of day).

3. Reducing the number of stations in the network by re-arranging the

hierarchial su/jointfilesconvert/293504/bgrouping of stations.

4. Requesting all stations to set the fast scan rate option.

Immediate (Manual) Sounding

If it is required to perform a rapid sounding cycle on all channels instead

of, or in addition to, the automatic sounding cycle, the Immediate

Sounding procedure can be used.

Optional Handshake/Call Reject

The “optional handshake” is programmable. If selected, each time a

sounding transmission is completed, the radio will listen for two

seconds. If a call is received on the same channel, the radio will

respond and establish a link.

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Motorola MICOM-2TS Spezifikationen Seite 89