mbos8a_eng (13.03.2014)
- 12 -
Kompetent für Elektroniksysteme
mbos8a_eng (13.03.2014)
- 13 -
Kompetent für Elektroniksysteme
Connecting several Major in Parallel Circuit
As the AF outputs are only open during transmission and the AF inputs can be switched
to high-resistance by pulling the jumpers J1 to J4, it is possible to connect several
Major
BOS 8a
in parallel.
Therefor, all connections to the single radio circuits (TX-AF, RX-AF, squelch and transmitter
PTT) have to be connected
in parallel
(bus- or hub-wiring).
Here the
busy lines
of the radio channels, which can only be connected with other control
sets, have a special function.
Activating the Busy Lines
Each control set, which is connected to the corresponding busy line, can signalize to other
control sets in parallel circuit, if a radio channel has already been selected and/or if a radio
channel is already used for transmitting.
a)
In the
EEPROM register 02B
it is possible to make
a configuration for the radio channels
1..8 (
bit 0..7
) so that the corresponding busy line is activated if the circuit
is selected
.
register 02B
activate busy line if circuit is selected
bit 0:
circuit 1
NO/YES (0/1)
bit 1:
circuit 2
NO/YES (0/1)
bit 2:
circuit 3
NO/YES (0/1)
bit 3:
circuit 4
NO/YES (0/1)
bit 4:
circuit 5
NO/YES (0/1)
bit 5:
circuit 6
NO/YES (0/1)
bit 6:
circuit 7
NO/YES (0/1)
bit 7:
circuit 8
NO/YES (0/1)
b)
In the
EEPROM register 02C
it is possible to make a configuration for the radio chan-
nels 1..8 (
bit 0..7)
so that the corresponding busy line is activated
when transmitting
(on
this channel).
register 02C
activate busy line during transmission
bit 0:
circuit 1
NO/YES (0/1)
bit 1:
circuit 2
NO/YES (0/1)
bit 2:
circuit 3
NO/YES (0/1)
bit 3:
circuit 4
NO/YES (0/1)
bit 4:
circuit 5
NO/YES (0/1)
bit 5:
circuit 6
NO/YES (0/1)
bit 6:
circuit 7
NO/YES (0/1)
bit 7:
circuit 8
NO/YES (0/1)
Summary of Contents for Major BOS 8a
Page 1: ...Major BOS 8a...
