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Chapter 21
21-28
RBI-1
User Function Outputs
The eight
RBI-1 User Function Outputs
are available for your use in operating
auxiliary devices at the repeater site. These outputs can be latched ON or
OFF. The outputs can be controlled individually or as a group.
“ON” refers to the state of an output when it is sinking current to ground; “OFF”
refers to the state of an output when it is open (floating).
Following a power failure or controller reset, the outputs are set to the state that
they were before the power failure or reset.
A number of the
User Function Outputs
can be grouped for control using
decimal numbers from 0 to 255. This type of command could be used to enter
rotator azimuths for control of an antenna rotator. Since not all outputs may
need to be used for rotator control, the number of outputs can be specified so
that the remaining outputs can be used for control of other auxiliary devices.
Here is an example of the use of the
User Function Outputs
. Suppose you
needed to control a rotator that needed six control lines to specify the azimuth
in which to point the antenna. You would connect the rotator controller to the
User Function Outputs
starting from
UF-1
as follows:
You would then issue the
Select RBI-1 Number of User Function Outputs
command:
(PW) 39 90 6 *
to specify that only the first six
User Function Outputs
are to be controlled by
the
Enter RBI-1 User Function Output Group.
The rotator would then be
controlled by entering values in the range of zero (0) through sixty-three (63).
The remaining
User Function Outputs
, seven and eight, would be available for
auxiliary control.
The range of decimal numbers that may be entered in the group depends on
the number of
User Function Outputs
included in the group. The following table
defines the ranges. The group always starts with
UF-1
:
RBI-1
Pin
Function
RBI-1
Pin
Function
UF-1
Rotator Control Line #0
UF-4
Rotator Control Line #3
UF-2
Rotator Control Line #1
UF-5
Rotator Control Line #4
UF-3
Rotator Control Line #2
UF-6
Rotator Control Line #5
Group
Valid Decimal Numbers
Group
Valid Decimal Numbers
0
none available
5
0 thru 31
1
0 or 1
6
0 thru 63
2
0 thru 3
7
0 thru 127
3
0 thru 7
8
0 thru 255
4
0 thru 15
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