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RC4600 ACU Board Set
degrees clockwise will move the axis beyond the clockwise limit, the movement will be achieved by
moving 90 degrees counter-clockwise.
RF/EXT/BCN/DVB:
This field shows the current signal strength sensed on the selected signal strength channel. By pressing
the <Scroll Dn RF/SS> key the source of signal strength will rotate between an external signal strength
input (EXT) and the RF input (RF). If the controller is equipped with an optional internal beacon receiver,
BCN will also be available as a signal source. If the controller is equipped with an optional internal DVB-
S2 receiver, DVB will also be available as a signal source.
The current signal strength will be displayed as a value between 0 and 1023 for RF and BCN or 0 and
4096 for EXT or DVB.
If a signal lock input has been enabled associated with the observed channel, an "L" will be displayed to
the right of the signal strength value whenever the signal lock condition has been satisfied.
SPD:
This field shows the selected drive speed. The speed may be toggled between FAST and SLOW by
pressing the <Speed> key.
TIME DISPLAY
MANUAL mode will display the "display time" and time zone in the lower right-hand corner.
2.1.1.2.1.1 Heading Fix
After a LOCATE operation has occurred, the operator is delivered to MANUAL mode and the user is
given the ability to correct the mount's true heading based on where the selected satellite is found. This
HEADING FIX capability is available when all the following conditions are true:
1) MANUAL mode was entered following a successful LOCATE
2) The selected satellite is geostationary (inclination = 0)
3) The mount's position has not already been saved
4) The heading has not already been fixed (automatically or manually)
When the above conditions are present, the "<0-9>JOG ANTENNA" message at the bottom of the LCD
will alternate with "<ENTER>FIX HEADING" message. The user should positively identify that he is on
the selected satellite and manually peak up in azimuth and elevation. When the Enter key is pressed, the
MANUAL mode will switch to the following screen.
C U R R E N T H E A D I N G : 1 7 8 . 7
A C T U A L H E A D I N G : 1 7 5 . 4
< B K S P > A P P L Y D I F F . T O H E A D I N G
The HEADING FIX screen shows the name of the selected satellite in the SAT: field. The CURRENT
HEADING field shows the heading originally determine by the LOCATE function based on the mount's
current position. The ACTUAL HEADING field shows the where the user peaked up on the satellite while
in MANUAL mode.
Chapter 1
D I F F E R E N C E :
- 3 . 3
25
H E A D I N G F I X
S A T : G A L A X Y 2 8
< M O D E > E X I T
Introduction
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