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RC2000C Polar Tracking Antenna Controller
byte 34:
7
6
5
$
-
-
-
0
c1 c0 $
a
a
a
a
-
-
-
-
byte 35:
7
6
5
$
-
-
-
0
1
p
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1 1
s s s s
- - - -
0 0 0 0
0 0 0 1
0 0 1 0
0 0 1 1
0 1 0 0
0 1 0 1
1 0 0 0
1 0 0 1
1 0 1 0
1 0 1 1
1 1 0 0
1 1 0 1
1 1 1 0
1 1 1 1
AGC (automatic gain control) input channel (1 or 2) which has the greater signal and
the five least significant bits of the agc input level on that channel.
4
3
2
1
0
-
-
-
-
-
a
a
a
a
a
where
c1 c0
-- --
0 1
1 0
a
-
the least five significant bits of the agc input level on the channel
specified by c1 and c0 above.
This byte indicates the status of the flag that specifies whether or not remote
polarization commands will be accepted when TRACK mode is active
and the five most significant bits of the agc input level.
4
3
2
1
0
-
-
-
-
-
a
a
a
a
a
where
p
-
0
1
Discussion - The 'p' field described above only contains meaningful
data when TRACK mode is active.
Polarization movement is not allowed during a TRACK mode peaking
operation. If a polarization operation occurs during peaking the peak
Appendix E
Communications Protocol
l band
track mode not active
track setup submode active
track auto mode entry
step track submode active
track search submode active
program track submode active
track jammed error
track limit error
track drive error
track peak limit error
track azim scale factor error
track geo position error
track system error
track checksum error
meaning
agc channel one has the greater input level
agc channel two has the greater input level
meaning
polarization movements are not allowed
polarization movements are allowed
85
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