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Rotator

Rotator function from firmware version 1.24/2.8:

The Webswitch supports a number of different antenna rotators:

  • Analogue models  (requires Antenna Rotator Card 1216L)
  • Prosistel “D” (requires RS-232 Adapter for Rotators 1216S)
  • Array switch models
  • Green Heron RT-21 (requires RS-232 Adapter for Rotators 1216S)
  • DCU-1 compatible models (requires RS-232 Adapter for Rotators 1216S)
  • Yaesu GS-232B (requires RS-232 Adapter for Rotators 1216S)
  • AlfaSpid RAK(requires RS-232 Adapter for Rotators 1216S and firmware version 2.8 or newer)

The web browser used must have support for Javascript. For some rotators additional hardware are required.

Depending on selected rotator the settings and controls will look different. Below the Analogue model is shown:

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The position of the rotator is shown both as a degree number and graphically. The graphical view has a 5 degrees resolution. It is possible to move the rotator both to a given degree as well as manually run it Clock Wise or Counter Clock Wise. The brake is automatically released before the rotation of the rotator starts.

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“Scale start” is used to set the starting degree of the rotator’s control panel. The calibration points’ degree values will change accordingly when changing “Scale start”. There are settings allowing for compensation for the antenna not being mounted exactly in position(“Antenna offset”) and for fine tuning the movement so that the rotator stops at the wanted degree(“Fine Tuning”). “Sensor” is used to select rotator sensor/device(1216L) and also to disable the rotator function.

1216L-4 or older: 
Two input voltage range can be set, either 0-2.55V or 0-5.10V. With “A/D resolution” it’s possible to change the resolution of the A/D. Note that the A/D’s accuracy is 8 bits so higher settings isn’t necessary better.

1216L-5 or newer:
The A/D has a fixed 10 bits resolution and a fixed voltage range from 0-5.10V.

The 13 calibration points are used to calibrate the rotator’s scale, even if the A/D readings from the rotator is “non-linear”. “180(839)” means 180 degrees and 839 saved as A/D value for that degree. A value of (*) means that the point isn’t programmed. All 13 calibration points need to programmed in order for the rotator function to work.

To have the system configured and running one needs to at least calibrate the two end points(180 and 179 on the image above) and then click the link “Fill in missing calibration settings using values from: 180 and 179″. Doing so will work if the rotator’s degree sensor is linear. Other options are using 3, 5 or all 13 calibration points to more exactly configure the system.

Note that the 1-wire bus used(A/B) for the antenna rotator card 1216L will be exclusively used for the antenna rotator control. Other sensors, for ex. temperature sensors, can’t be used on the same bus.

Also note that the rotator modes which use the RS 232 Adapter 1216S cannot be combined with other features which also use the RS 232 port, for ex. Advanced Settings -> Function type “ICOM” used to select antennas based on radio bands. As soon as such a rotator mode is selected it will not be possible to set Advanced Settings -> Function type to “ICOM” etc, neither will it be possible to change the Uart’s baud rate etc.

Rotator function up to firmware version 1.17:

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Note! The function above requires additional hardware(1216L),  as well as a Web browser with Javascript support.
This page allows control of an antenna rotator. The position of the rotator is shown both as a degree number and graphically. The graphical view has a 5 degrees resolution. It is possible to move the rotator both to a given degree as well as manually run it Clock Wise or Counter Clock Wise. The brake is automatically released before the rotation of the rotator starts. There are settings allowing for compensation for the antenna not being mounted exactly in position(“Antenna offset”), for setting the zero position of the antenna(“Zero pos.”), for selecting rotator sensor/device(“Sensor”), for fine tuning the movement so that the rotator stops at the wanted degree, and for setting the end positions. The numbers within () show the raw A/D value of the programmed end position. “Last A/D” shows the current raw A/D value, mainly for debug/installation purposes.

First time initializing requires manually moving the rotator to its extreme end positions(CW and CCW), one at a time, and click on “Set end positions CW/CCW”. That will “learn” the Webswitch where the end positions are.

Note that the 1-wire bus used(A/B) for the antenna rotator card 1216L will be exclusively used for the antenna rotator control. Other sensors, for ex. temperature sensors, can’t be used on the same bus.

Rotator function from firmware version 1.18:

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Rotator function from firmware version 1.19: (Showing a Prosistel “D”)

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In firmware version 1.18 and newer some of the settings have been moved to a new page:

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“Scale start” is used to set the starting degree of the rotator’s control panel. The calibration points’ degree values will change accordingly when changing “Scale start”. “Antenna offset” and “Fine tuning” is used like in older firmware versions. “Sensor” is used to select rotator sensor/device(1216L) and also to disable the rotator function.

The 13 calibration points are used to calibrate the rotator’s scale, even if the A/D readings from the rotator is “non-linear”. “180(839)” means 180 degrees and 839 saved as A/D value for that degree. A value of (*) means that the point isn’t programmed. All 13 calibration points need to programmed in order for the rotator function to work.

To have the system configured and running one needs to at least calibrate the two end points(180 and 179 on the image above) and then click the link “Fill in missing calibration settings using values from: 180 and 179″. Doing so will work if the rotator’s degree sensor is linear. Other options is using 3, 5 or all 13 calibration points to more exactly configure the system.

Note that the 1-wire bus used(A/B) for the antenna rotator card 1216L will be exclusively used for the antenna rotator control. Other sensors, for ex. temperature sensors, can’t be used on the same bus.

Below is a picture of the RS-232 Adapter for Rotators 1216S and how to connect it to the Webswitch for use with RS-232 rotators:

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PCB

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