P300H
P300 Series Modem Installation and Operating Handbook
Page 91
Is all Rx data for this destination: [?]
1=All 2:Partial
Change, Rx, Baseband, Insert Mux, Partial Insert Menu
See the applications section, para 8.3 "Partial Insert and Multidestinational Working" on page 145 for a
discussion of this facility.
If
ß´´
is selected, the dialogue continues as with the Drop Mux on the Tx path.
If
ﮬ·¿´ ײ-»®¬
is selected the following screen is displayed:
Total data rate for ALL dest' from satellite:
[1152000] ??????? (YES)
Change, Rx, Baseband, Insert Mux, Partial, Total Rate Menu
Normally, when using Drop / Insert, the modem determines the expected data rate from the satellite from
the number of timeslots specified. However when using partial insert the data rate from the satellite has
to be specifically set (as there is more data coming from the satellite than will be inserted). It must be N x
64kbps, N=2 to 32 (minimum of 2 not 1, as you cannot have a multidestinational carrier with only 1 x
64kbps incoming ! ). The screen is then displayed:
Sat TS: 1-3, 10-12
Toggle:??-?? (YES)
Change, Rx, Baseband, Insert Mux, Partial, Data Select Menu
On this screen the data for this destination is selected from the total receive data. The incoming data
from the satellite is labelled as timeslots 1 - N. NOTE this labelling bears NO RELATION to the terrestrial
timeslots from which the data was dropped at the Tx site.
It should be read as
First
through
Nth
64
kbps channel
of the total sent.
For example in a 256kbps incoming carrier the Rx data is referred to as
TS 1 - TS 4 (first, second, third and fourth 64kbps channel in the 256kbps) whether it was originally
dropped from timeslots 1, 2, 3, & 4, or timeslots 13, 17, 19 & 23.
At the receive site
(whether partial
insert is active or not)
there is
no concept of `Dropped timeslots`
, there is
only
first 64kbps, second
64kbps etc.
When he selection of data for this destination is complete, the
ײ-»®¬ Ó«¨
option on the Change, Rx,
Baseband menu continues as with the
Ü®±° Ó«¨
option on the Change, Tx, Baseband menu. The total
number of timeslots inserted must match the number of 64kbps channels selected for this destination on
the `Sat TS` screen above.
