Signal Strength Parameters; Expert Access Flag - Dawn CONTROL-1500A Manual

CONTROL-1500A Single Axis Antenna Controller
disabled. To DISABLE these features, make sure that the value entered for Fst Deadbnd
DOES NOT end in '01' (i.e. when the value is divided by 100 the remainder is not 1), and that
the value entered for Slo Deadbnd DOES end in either '00' or '50' (i.e. the value entered is a
multiple of 50).
During an automatic move in AUTO mode, the Coast Threshold CONFIG mode item sets the
number of counts before the target position is reached where the drive will be deactivated.
The idea is to deactivate the drive and let the antenna coast into position. If prior to the
initiation of the move operation, the total number of counts that the actuator has to move to
reach the target position is less than the Coast Threshold, the drive will be deactivated when
its position is within Max Pos Error counts of the target position.
POS
COAST THRSH: 4
1-40 COUNTS
The Max Pos Error CONFIG mode item sets the maximum acceptable error between the final
resting position and a target position for an automatic move which occurs in AUTO mode.
POS
MAX POS ERROR: 0
0-10 COUNTS
4.9.6

Signal Strength Parameters

The controller can display signal strength information. Signal strength information is generally
obtained from a receiver's automatic gain control (AGC) circuitry. The procedures used to
adjust the controller's AGC input circuits and obtain these parameters is described in section
3.6.1 - AGC Adjustment and Configuration. Access to these CONFIG mode items is permitted
only when the Expert Access Flag is set.
POS
AGC POLARITY:1
0-neg 1-POS
The AGC Polarity flag tells the controller what the sense is on the input AGC voltage used for
tracking. A positive sense is defined as one that increases in magnitude as the RF signal
strength increases. If the AGC voltage decreases as the RF signal increases, its sense is
considered negative. Enter the appropriate value, either 0 or 1, followed by ENTER to key in
the value.
4.9.7

Expert Access Flag

Expert Access is used to control access to CONFIG mode items. When the Expert Access
flag is set (ON), the user has access to all controller modes and all CONFIG mode items.
When the Expert Access Flag is reset (OFF), the user is locked out of several modes and most
CONFIG mode items. The purpose of this feature is to keep an operator away from the modes
DAWNco • 3340 S. Lapeer Rd • Orion, MI 48359-1320 • Ph (248) 391-9200 • Fax (248) 391-9207 • sales@DAWNco.com
POL SS
CFG
MODE
POL SS
CFG
MODE
POL SS
CFG
MODE
Chapter 4 Modes Function Description
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