User Manual

9.409 NDSatCom-ACU4100A-SNG

This page describes the device driver and the device window for the ND SatCom ACU4100A-SNG for car mounted antennas.

Device window pages

The following table shows which device window pages are available with this individual device type. Tool-bar functions not mentioned here are described at the general description of device windows .

--- The main parameter page displays/controls the antenna pointing and provides controls to park / unpark the antenna.
--- The 'Calibrate / Azimuth Scan' page provides controls to calibrate the antenna's azimuth reading by adjusting the antenna to aknown satellite.
--- The 'State' page shown the actual readings reported by the antenna controller.
--- The 'Auxiliary I/O' page gives access to the auxiliary relay outputs / optocoupler inputs of the ACU.
--- The faults page.
--- The device info page.
--- The maintenance page. The configuration parameters described below are set at this page.

Configuration parameters

At the maintenance page of the device window there are a couple of configuration parameters which must be set to make the software talk to the antenna controller.

parameter	description
address	The ACU usually expects the address "1".
Serial	Remember to set the line parameters for the serial interface connected to the ACU. 19200,N,8,1 are the settings the ACU expects.

Azimuth calibration

To calibrate the azimuth reading for the actual location of the car, the sat-nms device driver supports you performing the following procedure:

Select a well known satellite (e.g. Hotbird 13° East) and calculate the azimuth / elevation angles for the geodetic position of the antenna.
Move the antenna up to the calculated elevation.
With a compass (or just by eye) estimate the azimuth direction where you expect the satellite.
Move the antenna to point some degrees more in the east.
With the scan feature, found at the 'Calibrate / Azimuth Scan' page, slowly move the antenna to the position where the satellite is expected.
Watch the spectrum analyzer or the IRD signal lock indicator. Press STOP as soon as the satellite has been found.
Fine-adjust the antenna for best receive quality.
Again at the 'Calibrate / Azimuth Scan' page, enter the calculated azimuth angle in the 'azimuth target' field an press 'CALIBRATE'.

The antenna's azimuth reading is now calibrated.

Variables defined by this device driver

name	type	flags	range
info.driver	TEXT	R/O	StringRange R/O
lowLevel.cmd	TEXT		StringRange
lowLevel.reply	TEXT	R/O	StringRange R/O
faults.99	ALARM	R/O	AlarmFlagRange R/O (Communication)
faults.commstat	TEXT	R/O	StringRange R/O
info.type	TEXT	R/O	StringRange R/O
info.port	TEXT	R/O	StringRange R/O
info.frame	TEXT	R/O	StringRange R/O
info.release	TEXT	R/O	StringRange R/O
info.temperature	INTEGER		IntegerRange (0 .. 0)
internal.m	HEX	R/O	HexRange R/O (0 .. 0)
internal.s	HEX	R/O	HexRange R/O (0 .. 0)
internal.b	HEX	R/O	HexRange R/O (0 .. 0)
internal.init	HEX	R/O	HexRange R/O (0 .. 0)
internal.az	FLOAT	R/O	DoubleRange R/O (0.000 .. 0.000)
internal.el	FLOAT	R/O	DoubleRange R/O (0.000 .. 0.000)
internal.azUp	BOOLEAN	R/O	BooleanRange R/O (true false)
internal.azDn	BOOLEAN	R/O	BooleanRange R/O (true false)
internal.elUp	BOOLEAN	R/O	BooleanRange R/O (true false)
internal.elDn	BOOLEAN	R/O	BooleanRange R/O (true false)
internal.plUp	BOOLEAN	R/O	BooleanRange R/O (true false)
internal.plDn	BOOLEAN	R/O	BooleanRange R/O (true false)
azimuth	FLOAT		DoubleRange (0.00 .. 0.00)
elevation	FLOAT		DoubleRange (0.00 .. 0.00)
polarization	FLOAT		DoubleRange (0 .. 0)
azcal	FLOAT		DoubleRange (0.00 .. 0.00)
azoffs	FLOAT	SAVE	DoubleRange (0.00 .. 0.00)
calibrate	TEXT		StringRange
state.az	FLOAT	R/O	DoubleRange R/O (0.00 .. 0.00)
state.el	FLOAT	R/O	DoubleRange R/O (0.00 .. 0.00)
state.pl	FLOAT	R/O	DoubleRange R/O (0.0 .. 0.0)
state.moving	BOOLEAN	R/O	BooleanRange R/O (true false)
state.limit	BOOLEAN	R/O	BooleanRange R/O (true false)
state.inclin	FLOAT	R/O	DoubleRange R/O (0.00 .. 0.00)
state.analog1	FLOAT	R/O	DoubleRange R/O (0.000 .. 0.000)
state.analog2	FLOAT	R/O	DoubleRange R/O (0.000 .. 0.000)
aux.relay3	CHOICE		EnumRange (0 1)
aux.relay4	CHOICE		EnumRange (0 1)
aux.input1	INTEGER	R/O	IntegerRange R/O (0 .. 0)
aux.input2	INTEGER	R/O	IntegerRange R/O (0 .. 0)
aux.input3	INTEGER	R/O	IntegerRange R/O (0 .. 0)
aux.input4	INTEGER	R/O	IntegerRange R/O (0 .. 0)
scanSpeed	INTEGER	SAVE	IntegerRange (0 .. 100)
scanDest	FLOAT	SAVE	DoubleRange (0.00 .. 0.00)
reset	TEXT	NOPRESET	StringRange
park	TEXT	NOPRESET	StringRange
unpark	TEXT	NOPRESET	StringRange
scan	TEXT	NOPRESET	StringRange
faults.01	ALARM	R/O	AlarmFlagRange R/O (AZ low limit)
faults.02	ALARM	R/O	AlarmFlagRange R/O (AZ high limit)
faults.03	ALARM	R/O	AlarmFlagRange R/O (EL low limit)
faults.04	ALARM	R/O	AlarmFlagRange R/O (EL high limit)
faults.05	ALARM	R/O	AlarmFlagRange R/O (PL low limit)
faults.06	ALARM	R/O	AlarmFlagRange R/O (PL high limit)
faults.07	ALARM	R/O	AlarmFlagRange R/O (Remote access)
faults.08	ALARM	R/O	AlarmFlagRange R/O (Emergency STOP)