YAESU GS-232A Computer Control Interface for Antenna Rotators

General Description

The GS-232A provides digital control of most models of Yaesu antenna rotators from the serial port of an external personal computer.

The GS-232A contains its own microprocessor with ROM and RAM (memory), and a 10-bit analog-to-digital (A-D) converter. The 3-wire async serial line can be configured for serial data rates from 150 to 9600 baud. The GS-232A has a DB-9 "male" connector for connection to the [RS-232C] COM port of your computer. Purchase or construct a "straight" type serial cable, ensuring it has the correct gender and number of pins for connection to your system.

Firmware on the GS-232A supports either direct keyboard control, or commands from programs written specifically to support it (software is not supplied by Yaesu). In addition to reading and setting antenna angle and rotation speed, the firmware includes clocked positioning routines to automatically step the antenna through up to 3800 angles at programmable intervals, such as for tracking band openings or satellites (with an elevation rotator).

Please read this manual carefully to install the GS-232A. If also installing a G-400, G-500A or G-550 with the GX-500 Automatic Control Adapter, follow the procedures in the GX-500 manual before installing the GS-232A.

Compatible Rotators include:

• G-800DXA/G-1000DXA/G-2800DXA Azimuth Rotator
• G-800DXC/G-1000DXC/G-2800DXC Azimuth Rotator
• G-400 Azimuth Rotator
• G-500A/G-550 Elevation Rotator
• G-5400B/G-5600B/G-5500 Az-EL Rotator, and above Azimuth and Elevation rotator combinations.

Note: G-400 Azimuth Rotator and G-500A/G-550 Elevation Rotator require one GX-500 Automatic Control Adapter each.

Diagram Description: The first page shows the YAESU logo, the product name GS-232A, and its subtitle "Computer Control Interface for Antenna Rotators". Below this, it lists the addresses of various Yaesu regional offices. A small illustration of the GS-232A unit is also present, highlighting the POWER button.

Specifications

General

• Power Requirements: DC 12 V, 110 mA
• Case Size: 110 (W) x 21 (H) x 138 (D) mm
• Weight (approx.): 380 g

Semiconductors

• Microprocessor: HD6303XP
• ROM: 27C64
• RAM: 6264
• A/D Converter: HD46508PA (10 bits)

Serial Comms

• 3-wire Async. DCE
• RS-232C voltage levels
• 150 to 9600 baud
• 8 data bits
• 1 stop bit, no parity, no handshake

Connector Pinouts

Serial I/O

• 9-pin DB-9 connector ([RS-232C] connector)
• Pin 2 - Tx Data
• Pin 3 - Rx Data
• Pin 5 - Signal Ground

Rotator Control

• 5-pin connector (EL connector):
• Pin 1 - UP switch ([open collector])
• Pin 2 - DOWN switch ([open collector])
• Pin 3 - analog output (0.5 - 4.5 V, four steps)
• Pin 4 - analog input (0-5V elevation)
• Pin 5 - analog ground
• 5-pin connector (AZ connector):
• Pin 1 - RIGHT switch ([open collector])
• Pin 2 - LEFT switch ([open collector])
• Pin 3 - analog output (0.5 - 4.5 V, four steps)
• Pin 4 - analog input (0-5V azimuth)
• Pin 5 - analog ground

Accessories & Options

Supplied Accessories

• ☑ Control cable for the Azimuth Rotator¹ (1 pc)
  • ("5-pin" → "Min-DIN" cable)
• ☑ Control cable for the Az/EL Rotator² (1 pc)
  • ("Dual 5-pin" → "DIN" cable)
• ☑ DC cable w/coaxial plug (1 pc)
• ☑ Hook & loop fasteners (for mounting) (1 pc)

¹: G-5400B-G-5600B/G-5500
²: G-800DXA/G-1000DXA/G-2800DXA & G-800DXC/G-1000DXC/G-2800DXC

Available Options

• GX-500 (GS-232A version) Control Adapter (Check with your dealer)
• C-1000 Connection Cable (for SDX series Azimuth Rotator)
• NC-72B/C/F/U³ AC Adapter
  • ³: "B" suffix is for use with 117 VAC,
  • "C" suffix is for use with 220-240 VAC,
  • "F" suffix is for use with 220 VAC, or
  • "U" suffix is for use with 230 VAC

Installation

Power & Control Connections

DXA or DXC Series Azimuth Rotator

• Connect the supplied DC cable to a source of 12 VDC. The red lead connects to the Positive (+) DC terminal, and the black lead connects to the Negative (−) DC terminal. The GS-232A requires 110 mA. The supplied cable has a 500-mA fast-blow fuse. Use only the same type fuse for replacement.
• Plug the coaxial power connector into the DC 12V jack on the GS-232A rear panel.
• Connect the supplied Control cable ("5-pin" → "Mini-DIN") between the EXT CONTROL connector on the rotator's controller and AZ connector on the rear panel of the GS-232A (Figure 1).

Figure 1 Diagram: Illustrates the connection of a DXA or DXC series Azimuth Rotator. It shows the GS-232A unit connected via a serial cable to a computer, and via a control cable to the rotator's controller. A DC power source is also connected to the GS-232A.

G-5400B/-5600B Az-EL Rotator

• Connect the supplied DC cable to a source of 12 VDC. The red lead connects to the Positive (+) DC terminal, and the black lead connects to the Negative (−) DC terminal. The GS-232A requires 110 mA. The supplied cable has a 500-mA fast-blow fuse. Use only the same type fuse for replacement.
• Plug the coaxial power connector into the DC 12V jack on the GS-232A rear panel.
• Connect the supplied Control cable ("Dual 5-pin" → "DIN") between the rotator's controller and GS-232A. Be careful to match the "AZ" and "EL" labels on the cable with the same labels on the rear panel of the GS-232A (Figure 2).

Figure 2 Diagram: Shows the connection for a G-5400B/-5600B or G-5500 Az/EL Rotator. The GS-232A is connected to a computer via a serial cable and to the rotator's controller using a "Dual 5-pin" to "DIN" cable. Power is supplied via a DC cable.

G-400/G-500 or G-400/G-550 & pair of GX-500

• Connect the supplied DC cable to a source of 12 VDC. The red lead connects to the Positive (+) DC terminal, and the black lead connects to the Negative (−) DC terminal. The GS-232A requires 110 mA. The supplied cable has a 500-mA fast-blow fuse. Use only the same type fuse for replacement.
• Plug the coaxial power connector into the DC 12V jack on the GS-232A rear panel.
• Connect the 5-pin to 5-pin cable (supplied with the GX-500; requires two sets) between the GX-500(s) and GS-232A (Figure 3).

Figure 3 Diagram: Depicts the connection setup for G-400/G-500 or G-400/G-550 rotators when used with a GX-500 Control Adapter. The GS-232A is connected to a computer and to one or more GX-500 units, which then connect to the rotator controllers.

SDX Series Azimuth Rotator

• Prepare the optional C-1000 Connection Cable.
• Remove the Top cover from the controller.
• Connect the 8-pin connector of the C-1000 Connection cable to the exposed 8-pin connector located on the rear left corner in the controller.
• Route the 5-pin connector of the C-1000 Connection cable through the rubber grommet on the rear panel of the controller, and connect it to the AZ connector on the rear panel of the GS-232A (Figure 4).
• Replace the Top Cover.
• Connect the supplied DC cable to a source of 12 VDC. The red lead connects to the Positive (+) DC terminal, and the black lead connects to the Negative (−) DC terminal. The GS-232A requires 110 mA. The supplied cable has a 500-mA fast-blow fuse. Use only the same type fuse for replacement.
• Plug the coaxial power connector into the DC 12V jack on the GS-232A rear panel.

Figure 4 Diagram: Shows the installation of the C-1000 Connection Cable for an SDX series Azimuth Rotator. The cable connects from the rotator controller to the GS-232A's AZ connector. The diagram also indicates the DC power connection and serial connection to the computer.

Computer Connection

• With the computer switched off, connect the [RS-232C] cable to the serial port of the computer, then connect the other end of your serial cable to the [RS-232C] connector on the rear panel of the GS-232A. Only three wires are used for serial control, so there is no hardware handshaking.
• If you are using a G-400 Azimuth Rotator, or G-5400B/G-5600B Az-EL Rotator, set the GS-232A's [DIP switch] (switch 5) to "OFF" position, to disable the 450° rotate operation. If you are using other rotators (except the G-400/G-5400B and G-5600B), the GS-232A's [DIP switch] (switch 5) is still "ON."
• Select the desired data baud rate with the [DIP switch] bank on the GS-232A's bottom case.
• The Control Interface serial data format uses 8 data bits, no parity, and one stop bit, with no handshaking. Turn on the computer, controller, and GS-232A, and set up your terminal program for this format and your selected data rate on the serial port to be used for rotator control.

Diagrams: Show the GS-232A Rear Panel with its connectors, and the GS-232A Bottom Case revealing the DIP switches. A table lists Baud Rates (150 to 9600) and their corresponding DIP switch settings (1-4).

Calibration

DXA/DXC/SDX Series Azimuth Rotator

Azimuth Offset Null

• Before calibrating the Rotator, check to see that the GS-232A's [DIP switch] (switch 5) must be "ON" position.
• From the Controller panel, set the Rotator fully counter-clockwise (set to 0°).
• Press [0] → [Enter] (the letter "oh", and "Enter") on the computer keyboard to activate the azimuth calibration routine. The computer display should show AZaaaa = bbbb returned from the Interface Board, where aaaa and bbbb are four-digit numbers padded at the left with zeroes.
• Adjust the AZ [trimmer] (located on the bottom case of the GS-232A) while watching the computer display, until the four-digit numbers aaaa and bbbb are the same (the precise values are not important).
• Turn off the GS-232A's [POWER switch] to exit the azimuth calibration routine, then turn on the GS-232A's [POWER switch] again.

Azimuth A-D Calibration

• From the Controller panel, set the Rotator fully clockwise (to the right).
• Press [F] → [Enter] ("F" and "ENTER") on the computer keyboard to activate the Control Interface's azimuth A-D converter calibration routine. The computer's display should show +aaaa, where aaaa is a four-digit number which indicates the azimuth heading in degrees.
• Adjust the OUT VOL ADJ [potentiometer] on Controller rear panel so as to get a reading of "0450" on the computer's display. This reading ("450 degrees") corresponds to the actual beam heading you established when you pointed the azimuth rotator to the East.
• Turn off the GS-232A's [POWER switch] to exit the azimuth A-D converter calibration routine, then turn on the GS-232A's [POWER switch] again.

Important Note ! If your controller's indicator needle starts from a point other than 0° (North) (such as the default setting of the USA version), align the starting point of the controller's indicator needle to 0° (North) before calibration. When finishing the calibration, set the controller's indicator needle to the desired point. Refer to the rotator's user manual for details regarding the indicator needle alignment.

G-400 Azimuth Rotator

Azimuth Offset Null

• Before calibrating the Rotator, check to see that the GS-232A's [DIP switch] (switch 5) is set to the "OFF" position.
• From the Controller panel, set the Rotator fully counter-clockwise (set to 180°).
• Press [0] → [Enter] (the letter "oh", and "ENTER") on the computer keyboard to activate the azimuth calibration routine. The computer display should show AZaaaa = bbbb returned from the Interface Board, where aaaa and bbbb are four-digit numbers padded at the left with zeroes.
• Adjust the AZ [trimmer] (located on the bottom case of the GS-232A) while watching the computer display, until the four-digit numbers aaaa and bbbb are the same (the precise values are not important).
• Turn off the GS-232A's [POWER switch] to exit the azimuth calibration routine, then turn on the GS-232A's [POWER switch] again.

Azimuth A-D Calibration

• From the Controller panel, set the Rotator fully clockwise (to the right).
• Press [F] → [Enter] ("F" and "ENTER") on the computer keyboard to activate the Control Interface's azimuth A-D converter calibration routine. The computer's display should show +aaaa, where aaaa is a four-digit number which indicates the azimuth heading in degrees.
• Adjust the FULL SCALE ADJ on the GX-500 so as to get a reading of "0180" on the computer's display. This reading ("180 degrees") corresponds to the actual beam heading you established when you pointed the azimuth rotator to the South (the fully clockwise setting).
• Turn off the GS-232A's [POWER switch] to exit the azimuth A-D converter calibration routine, then turn on the GS-232A's [POWER switch] again to turn it back on.

G-5400B/-5600B Az-EL Rotator

Azimuth Offset Null

• Before calibrating the Rotator, check to see that the GS-232A's [DIP switch] (switch 5) is set to the "OFF" position.
• From the Controller panel, set the Azimuth Rotator fully counter-clockwise (set to 180°).
• Press [O] → [Enter] (the letter "oh", and "ENTER") on the computer keyboard to activate the azimuth calibration routine. The computer display should show AZaaaa = bbbb returned from the Interface Board, where aaaa and bbbb are four-digit numbers padded at the left with zeroes.
• Adjust the AZ [trimmer] (located on the bottom case of the GS-232A) while watching the computer display, until the four-digit numbers aaaa and bbbb are the same (the precise values are not important).
• Turn off the GS-232A's [POWER switch] to exit the azimuth calibration routine, then turn on the GS-232A's [POWER switch] again.

Azimuth A-D Calibration

• From the Controller panel, set the Azimuth Rotator fully clockwise (to the right).
• Press [F] → [Enter] ("F" and "ENTER") on the computer keyboard to activate the Control Interface's azimuth A-D converter calibration routine. The computer's display should show +aaaa, where aaaa is a four-digit number which indicates the azimuth heading in degrees.
• Adjust the OUT VOL ADJ [potentiometer] on the "AZIMUTH" (left) side of the Controller rear panel so as to get a reading of "0180" on the computer's display. This reading ("180 degrees") corresponds to the actual beam heading you established when you pointed the azimuth rotator to the South.
• Turn off the GS-232A's [POWER switch] to exit the azimuth A-D converter calibration routine, then turn on the GS-232A's [POWER switch] again.

Elevation Offset Null

• From the Controller panel, set the Elevation Rotator to the "left" horizon (down, set to 0°).
• Press [O2] → [Enter] (the letter "oh," "2," and "ENTER") on the computer keyboard to activate the elevation calibration routine. The computer will return AZaaaa = bbbb, as in the previous procedure, plus ELcccc = dddd to the right, where cccc and dddd are four-digit numbers padded at the left with zeroes.
• Adjust the EL [trimmer] (located on the bottom case of the GS-232A), so as to make the numbers cccc and dddd are the same (again, the actual values are unimportant).
• Turn off the GS-232A's [POWER switch] to exit the elevation calibration routine, then turn on the GS-232A's [POWER switch] again to turn it back on.

Elevation A-D Calibration

• From the Controller panel, set the Elevation Rotator to full scale (180°: "right" horizon).
• Press [F2] → [Enter] (F, 2, and ENTER) on the computer keyboard to activate the Control Interface's elevation A-D converter calibration routine. The computer will display +aaaa+eeee, where eeee is a four-digit number which indicates the elevation heading in degrees. For the purposes of this alignment, you may ignore the (azimuth) aaaa numbers.
• Adjust the OUT VOL ADJ [potentiometer] on the "ELEVATION" (right) side of the Controller rear panel so as to get a reading of "0180" on the computer's display. This reading ("180 degrees") corresponds to the actual beam heading you established when you pointed the elevation rotator to the 180° position.
• Turn off the GS-232A's [POWER switch] to exit the elevation A-D converter calibration routine, then turn on the GS-232A's [POWER switch] again to turn it back on.

G-5500 Az-EL Rotator

Azimuth Offset Null

• Before calibrating the Rotator, check to see that the GS-232A's [DIP switch] (switch 5) is set to the "ON" position.
• From the Controller panel, set the Rotator fully counter-clockwise (set to 0°).
• Press [0] → [Enter] (the letter "oh", and "Enter") on the computer keyboard to activate the azimuth calibration routine. The computer display should show AZaaaa = bbbb returned from the Interface Board, where aaaa and bbbb are four-digit numbers padded at the left with zeroes.
• Adjust the AZ [trimmer] (located on the bottom case of the GS-232A) while watching the computer display, until the four-digit numbers aaaa and bbbb are the same (the precise values are not important).
• Turn off the GS-232A's [POWER switch] to exit the azimuth calibration routine, then turn on the GS-232A's [POWER switch] again.

Azimuth A-D Calibration

• From the Controller panel, set the Azimuth Rotator fully clockwise (to the right).
• Press [F] → [Enter] (F and ENTER) on the computer keyboard to activate the Control Interface's azimuth A-D converter calibration routine. The computer's display should show +aaaa, where aaaa is a four-digit number which indicates the azimuth heading in degrees.
• Adjust the OUT VOL ADJ [potentiometer] on the "AZIMUTH" (left) side of the Controller rear panel so as to get a reading of "0450" on the computer's display. This reading ("0450: 360 degrees + 90 degrees") corresponds to the actual beam heading you established when you pointed the azimuth rotator fully clockwise.
• Turn off the GS-232A's [POWER switch] to exit the azimuth A-D converter calibration routine, then turn on the GS-232A's [POWER switch] again.

Elevation Offset Null

• From the Controller panel, set the Elevation Rotator to the "left" horizon (down, set to 0°).
• Press [O2] → [Enter] (the letter "oh," "2," and "ENTER") on the computer keyboard to activate the elevation calibration routine. The computer will return AZaaaa = bbbb, as in the previous procedure, plus ELcccc = dddd to the right, where cccc and dddd are four-digit numbers padded at the left with zeroes.
• Adjust the EL [trimmer] (located on the bottom case of the GS-232A), so as to make the numbers cccc and dddd are the same (again, the actual values are unimportant).
• Turn off the GS-232A's [POWER switch] to exit the elevation calibration routine, then turn on the GS-232A's [POWER switch] again to turn it back on.

Elevation A-D Calibration

• From the Controller panel, set the Elevation Rotator to full scal (180°: "right" horizon).
• Press [F2] → [Enter] (F, 2, and ENTER) on the computer keyboard to activate the Control Interface's elevation A-D converter calibration routine. The computer will display +aaaa+eeee, where eeee is a four-digit number which indicates the elevation heading in degrees. For the purposes of this alignment, you may ignore the (azimuth) aaaa numbers.
• Adjust the OUT VOL ADJ [potentiometer] on the "ELEVATION" (right) side of the Controller rear panel so as to get a reading of "0180" on the computer's display. This reading ("180 degrees") corresponds to the actual beam heading you established when you pointed the elevation rotator to the 180° position.
• Turn off the GS-232A's [POWER switch] to exit the elevation A-D converter calibration routine, then turn on the GS-232A's [POWER switch] again to turn it back on.

G-500 Elevation Rotator

Elevation Offset Null

• From the Controller panel, set the Elevation Rotator to the "left" horizon (down, set to 0°).
• Press [O2] → [Enter] (the letter "oh," "2," and "ENTER") on the computer keyboard to activate the elevation calibration routine. The computer will return AZaaaa = bbbb, as in the previous procedure, plus ELcccc = dddd to the right, where cccc and dddd are four-digit numbers padded at the left with zeroes.
• Adjust the EL [trimmer] (located on the bottom case of the GS-232A), so as to make the numbers cccc and dddd are the same (again, the actual values are unimportant).
• Turn off the GS-232A's [POWER switch] to exit the elevation calibration routine, then turn on the GS-232A's [POWER switch] again to turn it back on.

Elevation A-D Calibration

• From the Controller panel, set the Elevation Rotator to full scale (180°: "right" horizon).
• Press [F2] → [Enter] (F, 2, and ENTER) on the computer keyboard to activate the Control Interface's elevation A-D converter calibration routine. The computer will display +aaaa+eeee, where eeee is a four-digit number which indicates the elevation heading in degrees. For the purposes of this alignment, you may ignore the (azimuth) aaaa numbers.
• Adjust the OUT VOL ADJ [potentiometer] on the GX-500 so as to get a reading of "0180" on the computer's display. This reading ("180 degrees") corresponds to the actual beam heading you established when you pointed the elevation rotator to the 180° position.
• Turn off the GS-232A's [POWER switch] to exit the elevation A-D converter calibration routine, then turn on the GS-232A's [POWER switch] again to turn it back on.

Operation

General

If you wish, you can mount the GS-232A on top of your Rotator Controller using the two supplied [hook-and-loop fastener] strips. Just remove the backing from one side of each strip, and press into place on the bottom of the GS-232A. Then remove the backing from the other side, and press the GS-232A into place on the Controller.

After installation and calibration, the Control Interface can accept commands entered directly from the keyboard, or from a program written specifically to support it (not supplied by Yaesu). For brief summaries of the commands recognized by the Control Interface, press [H] → [Enter] for a list of azimuth commands, or [H2] → [Enter] for elevations commands. Keep in mind that all commands require that the [ENTER key] be pressed after the command letter (or "0Dh" be sent by a control program), although we will not repeat this when discussing the commands. Also note that any command letter may be sent in either upper or lower case.

The info screens shown on the next page will be returned by the Control Interface.

Most commands have two versions: one for azimuth, and one for elevation. Commands are not echoed by the Control Interface, but a [carriage return character] ("0Dh") is returned after every command, and also a [line feed character] ("0Ah") if the command invoked returned data. Invalid commands cause "? >" to be returned and the [input buffer] cleared.

Note that all angles are in degrees, beginning with zero at the most counterclockwise azimuth (or horizontal elevation). Angles sent to the Control Interface must be 3 digits long (left-zero-padded), and angles returned will, in some cases, be 4 digits long with a leading "+0."

Command List

General Commands

• R (U): Start turning the rotator to the right (up).
• L (D): Start turning the rotator to the left (down).
• A (E): Stop azimuth (elevation) rotation.
• S: Stop: cancel current command before completion.
• C (B): Return current azimuth (elevation) angle in the form "+0nnn" degrees.
• C2: Return azimuth and elevation ("+0aaa+0eee", where aaa = azimuth, eee = elevation).
• Xn: Select azimuth rotator turning speed, where n = 1 (slowest) to 4 (fastest). This command can be issued during rotation, and takes effect immediately. There is no equivalent for elevation.
• 0 (02): Offset calibration for internal AZ (EL) [trimmer] [potentiometer]: preset rotator manually fully counter-clockwise, send command, and adjust [trimmer] on Control Interface until returned values are equal. Turn off the GS-232A's [POWER switch] to store settings.
• H (H2): Returns list of commands (see page 19).
• F (F2): Full Scale Calibration: preset rotator manually to full scale, send command, adjust OUT VOL ADJ [trimmer] on rear of controller (or GX-500 elevation adapter) until the returned data is "+0180 or +0450" ("+0nnn+0180" for elevation). Turn off the GS-232A's [POWER switch] to save new settings.
• Maaa: Turn to aaa degrees azimuth, where aaa is three digits between "000" and "360 or 450: vary according to controller type." Rotation starts.
• Msss aaa bbb ccc: This command, together with the [T] command, provides automatic, timed tracking of moving objects or propagation by the Control Interface itself. This command stores the time value sss seconds to wait between stepping from azimuth aaa to bbb, and then to ccc, etc. (from "2" to as many as "3800" angles may be stored with one command). Note that this command is completely different than the [T] command with only one parameter: when multiple parameters are present, the first one is interpreted by the Control Interface as the rotation interval sss, not an angle. Valid ranges are "001" to "999" for sss, and "000" to "360 or 450: vary according to controller type" for the angles. When this command is sent, the parameters are stored in the Control Interface's RAM, and the rotator turns to angle aaa and waits for a subsequent [T] command to begin the actual stepping. All numbers must be 3 digits, space-separated. Stored values remain in effect until another [M] command is issued (this may have no parameters, in which case the "? >" error prompt is returned, but memories are still cleared), or until the controller is turned off or by toggling the GS-232A off and on.
• T: See the [M] (above) and the [W] (below) command. Start automatic stepping routine (both azimuth and elevation): turn rotator to next sequentially memorized azimuth (or az-el pair, for the [W] command), wait sss seconds, and turn to next angle (or pair), etc. This command works only if a long-form [M] or [W] has been issued since power-up or the last reset.
• N: Return serial number of currently selected memorized point [nnnn], and total number of memorized points [mmmm], in the form +nnnn+mmmm. Must be proceeded by either a long-form [M] or [W], and a T command. Used only during stepping (see [T] command). The meaning of a "point" in this command following an [M] command is only an azimuth angle, so in this case nnnn and mmmm can range up to "3800" (the limit of available RAM in the Control Interface). However, when elevation is involved, a "point" following a [W] command is represented by both an azimuth and an elevation angle, in which case nnnn and mmmm can range up to only "1900," since each "point" is a pair of angles.

Elevation Control Commands (for Az-EL operation)

• Waaa eee: Turn to aaa degrees azimuth and eee degrees elevation, where aaa is three digits between "000" and "360 or 450: vary according to controller type," and eee is three digits between "000" and "180." Rotators respond immediately.
• Wsss aaa eee aaa sss ...: This command is similar to the [M] command: the first parameter is a time interval, and succeeding parameters are angles. With this command, however, angles are in azimuth-elevation pairs, each pair representing one antenna location. At most "1900" pairs can be sent and stored in the Control Interface. As with the other commands, the time interval range is limited to "001" to "999" (seconds), azimuth to "000" to "360 or 450: vary according to controller type," and elevation to "000" to "180." When this command is sent, the rotators turn to the first aaa azimuth parameter and the first eee elevation parameter, and wait for a subsequent [T] command to begin the actual stepping (to the next azimuth-elevation pair). Stored values remain in effect until another [W] command is issued (this may have no parameters, in which case the "? >" error prompt is returned, but memories are still cleared), or until the controller is turned off or by toggling the GS-232A off and on.

Command List Summary

Returned by [H] Command:

• COMMAND LIST 1
• R Clockwise Rotation
• L Counter Clockwise Rotation
• A CW/CCW Rotation Stop
• C Antenna Direction Value
• M Antenna Direction Setting. MXXX
• M Time Interval Direction Setting.
• MTTT XXX XXX XXX --- (TTT = Step value) (XXX = Horizontal Angle)
• T Start Command in the time interval direction setting mode.
• N Total number of setting angles in "M" mode and traced number of all datas (setting angles)
• X1 Rotation Speed 1 (Horizontal) Low
• X2 Rotation Speed 2 (Horizontal) Middle 1
• X3 Rotation Speed 3 (Horizontal) Middle 2
• X4 Rotation Speed 4 (Horizontal) High
• S All Stop
• O Offset Calibration
• F Full Scale Calibration

Returned by [H2] Command:

• HELP COMMAND 2
• U UP Direction Rotation
• D DOWN Direction Rotation
• E UP/DOWN Direction Rotation Stop
• C2 Antenna Direction Value
• W Antenna Direction Setting.
• WXXX YYY
• W Time Interval Direction Setting.
• WTTT XXX YYY XXX YYY --- (TTT = Step value) (XXX = Horizontal Angle) (YYY = Elevation Angle)
• T Start Command in the time interval direction setting mode.
• N Total number of setting angle in "W" mode and traced number of all datas (setting angles)
• S All Stop
• O2 Offset Calibration
• B Elevation Antenna Direction Value
• F2 Full Scale Calibration

Note

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