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Related Manuals for Calian SatService sat-nms ACU-19V
Summary of Contents for Calian SatService sat-nms ACU-19V
- Page 1 Antenna Controller sat-nms ACU-19V User Manual Version 5.0.002 © Copyright SatService Gesellschaft für Kommunikationssysteme mbH Hardstrasse 9 D-78256 Steisslingen satnms-support@satservicegmbh.de www.satnms.com www.satservicegmbh.de Tel +49 7738 99791-10...
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Page 2: Table Of Contents
Table Of Contents Table Of Contents ..........................sat-nms ACU-19V User Manual ......................1 Introduction ............................2 Safety Instructions ........................... 3 The sat-nms ACU19V ........................3.1 Frontpanel Display ........................3.2 Frontpanel Keyboard ......................... 3.3 Drive cabinet interfaces ......................3.4 Analog beacon level input ......................3.5 Angle encoder interfaces ...................... - Page 3 8 Theory of Operation ........................8.1 Angle Measurement ......................... 8.2 Pointing / Motor Control ......................8.3 Steptrack ..........................8.3.1 The sat-nms Steptrack Algorithm ..................8.3.2 ACU and Beacon Receiver ....................8.3.3 Smoothing ......................... 8.3.4 Steptrack Parameters ....................... 8.4 Adaptive Tracking ........................8.4.1 The sat-nms Adaptive Tracking Algorithm ................
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Page 4: Sat-Nms Acu-19V User Manual
sat-nms ACU-19V User Manual Version 5.0.002 -- 2021-07-29 -- © 2003-2021 SatService GmbH Abstract The sat-nms ACU19V is an advanced automatic tracking antenna controller. It can be used as a cost efficient antenna tracking system to replace the Vertex / General Dynamics Satcom Technologies Model 7200 Antenna Control Unit keeping the outdoor 7150 Antenna Drive Unit as it is. -
Page 5: Introduction
5.2 Antenna Pointing 5.3 Target Memory 5.4 Tracking Parameters 5.5 Test Page 5.6 Setup 5.7 Handheld Terminal 6 Frontpanel operation 6.1 Display mode 6.2 The main menu 6.3 Select targets 6.4 Step move 6.5 Editing Numeric Parameters 6.6 Set tracking mode 7 Remote Control 7.1 General command syntax 7.2 The TCP/IP remote control interface... - Page 6 compact cabinet directly at your antenna. sat-nms ACU-RMU: complete antenna controller system for AC-Motors integrated in a 6RU 19inch rack mount case for indoor use sat-nms ACU19: complete antenna controller system for DC-Motors integrated in a 1RU 19inch rack mount case for indoor use For detailed description please refer to the sat-nms documentation CD or www.satnms.com/doc Main benefits of the sat-nms ACU are:...
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Page 7: Safety Instructions
Operation : The sat-nms ACU is operated using a standard web browser like the Internet- Explorer on MS Windows based computers. The user interface design is straight forward and clearly structured. Operating the ACU is mostly self-explanatory. Nevertheless, the 'Operation' chapter outlines the map of web pages which make up the ACU user interface and elaborately describe the meaning of each alterable parameter. -
Page 8: The Sat-Nms Acu19V
personnel follow generally accepted safety procedures in addition to the safety precautions specified in this manual. Whenever it is likely that safety protection is impaired, the unit must be made in-operative and secured against unintended operation. The appropriate servicing authority must be informed. For example, safety is likely to be impaired if the unit fails to perform the intended measurements or shows visible damage. -
Page 9: Frontpanel Display
sat-nms ACU19V rear view component component frontpanel display angle encoder interfaces frontpanel Keyboard alarm interfaces drive cabinet interfaces remote interfaces analog beacon level input mains input 3.1 Frontpanel Display The Display together with the keyboard is your interface for local operation without using e.g. an external computer. -
Page 10: Alarm Interfaces
3.6 Alarm interfaces The sat-nms ACU19V provides a dry contact Alarm interface. Please refer to chapter Interfaces to the antenna/ Pin descriptions for more detailed informations. 3.7 Remote interfaces The sat-nms ACU19V provides an ethernet (http) interface for remote controlling. An internal webserver provides a clearly arranged webpage where all settings and states can be monitored and controlled. -
Page 11: Pin Descriptions
4.2.2 Pin descriptions J10 Drive Interface Connector Type: D-Sub25 female The ACU19V provides a digital signal interface based on 24V signal level for an external drive cabinet. signal description type Az CW Azimuth CW Cmd Az Com Azimuth Common (0V) Az CCW Azimuth CCW Cmd El UP... - Page 12 Analog In (0..10V) Analog In GND SHLD Shield J6, J7 and J8 Polarisation and Az/ El Angle encoders Connector Type: J7,J8 D-Sub25 male, J6 D-Sub9 male The sat-nms ACU19V provides the possibility to connect two different types of angle encoders at the azimuth and elevation axis: optical SSI encoders (S) and Resolvers (R).
- Page 13 Connect the cable shield either to the case of the DSub9 connector or to the ground at the resolver housing. Never connect the shield at both ends, this will introduce a ground loop and cause a significant degradation of the resolver's accuracy. signal description type...
- Page 14 SHLD Shield REF- drive signal to resolver resolver SIN TB1 Alarm Connector Type: D-Sub9 female TB1 provids a dry contact Alarm Interface for ACU-Alarms and Tracking Alarms signal description type ACU_FLT_NC acu alarm (connected to 2 if OK) RELAY ACU_FLT_C RELAY ACU_FLT_NO (connected to 2 if there is a FAULT)
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Page 15: Start-Up
possible to connect nearly all worldwide available single phase mains. Please refer to chapter Specifications for more detailed informations. 4.3 Start-up This chapter describes how to install and start-up the sat-nms ACU19V. It is a step-by-step description without detailed description. If you need more detailed description for e.g. some parameter settings, please refer to chapter 5 Operation , all of the parameters are described... -
Page 16: Angle Detectors
2. Now power on your computer and connect the ACU19V to the Mains supply (J12). 3. Insert the CD-ROM into the computer's drive and inspect it's contents through the 'My Computer' icon on your desktop. Double-click to the 'ChipTool.exe' program in the 'ChipTool' directory. -
Page 17: Driver Interface
4.3.2 Angle detectors Connect the angle detectors to the sat-nms ACU19V as described in chapter 4.2.2 Pin description 1. Configure the desired type of detector on the setup-page. 2. Set the soft-limits to the expected values (at first it is ok if you do this approximately, later on you need to type in here the exact values). -
Page 18: Operation
3. A small window like shown on the following picture will be opened. Please double-check the displayed IP, you might adjust it in the drop-down list here. 4. Login with username service and password service 5. Now you see on the right side the file system of the ACU like shown on the following picture. On the left side you see the computers file system. -
Page 19: The Web-Based User Interface
5 Operation The sat-nms ACU outdoor module is designed to be controlled over a network link using a standard web browser. This means in practice, that the user interface to the ACU appears in your browser window after you type in the ACU's IP address in the address field of the browser program. -
Page 20: Antenna Pointing
the 'Target' page where you can store and recall the antenna pointing for up to eight satellites.Tracking : sat-nms ACUs with the tracking option installed offer the tracking mode and tracking fine tune parameters on this page.Test : By clicking to this button you switch to the 'Test' page. - Page 21 Target name --- The name of the satellite the antenna is pointing to. Click to the name to get a dialog page where you can change the name. The name is stored together with a satellite's pointing at the target memory page.
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Page 22: Target Memory
angle between both 3dB points in the antenna pattern. S(step size) --- The absolute step size used by the step track in this axis. Time --- The actual time of the ACU's internal clock. GPS State --- The actual state of an external GPS receiver connected to the ACU (if applicable). -
Page 23: Tracking Parameters
The first target location, labeled 'adaptive tracking memory', is reserved for special purposes: If you store to this target location, this saves the tracking parameters and the tracking memory as well. When this memory location is recalled later on, the parameters and the memory contents are restored. - Page 24 evaluated after 6 hours of tracking. This is because the model does not get disturbed by the first search steps the antenna does until the optimal pointing to the satellite is found. Trackingstepsize --- The tracking step size is a very important parameter for the performance of the tracking.
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Page 25: Test Page
done carefully and may require some iterations, specially if the beacon is received with a low C/N. A good starting value for the threshold is 10 dB below the nominal receive level or 2 dB above the noise floor the beacon receiver sees with a depointed antenna, whatever value is higher.To turn off the monitoring of the beacon level (this in fact inhibits the adaptive tracking), simply set the threshold the a very low value (e.g. - Page 26 The electrical state of an input or output is indicated by the HI / LO label displayed with the signal. HI means that current is flowing through the optocoupler for this input or output. LO means that no current flows. As some signals are defined to be 'true' when a switch is opened, the electrical level of the signal not necessarily describes the logical level of this signal, too.
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Page 27: Setup
5.6 Setup The page 'Setup' contains the ACU's installation parameters. The page displays a table with the parameters actually set. Each parameter value is a hyper-link to a separate page which lets you change this parameter. This parameter change page shows the actual parameter setting either in an entry field or in a drop down box. - Page 28 By changing this value you can set the internal clock of the ACU. The clock is set as soon you click to the 'Submit' button in the data entry dialog. The most Date / time precise method to set the time is to enter a time one or two minutes ahead and click to 'Submit' when this time is reached.
- Page 29 of the encoder (0-360° with single turn encoders).The pre scale offset must be adjusted to avoid any 7FFFFFF to 8000000 overflow within the used range of the encoder. The value is added to the encoder reading, neglecting an overfly eventually occurring. Thus, the offset implements a 360°...
- Page 30 Low speed threshold --- The ACU controls a motor at two speeds. If the actual position is far away from the target value, the ACU commands the motor to use the fast speed. Once the antenna comes close to the target value, the ACU slows down the motor. The low speed threshold sets the angle deviation which lets the ACU use the fast motor speed.
- Page 31 Antenna course --- The Antenna course is an additional offset which is included into the azimuth calibration. It is used for mobile antennas to set the orientation of the antenna without recalibrating it. For stationary antennas this value always should be set to 180°. Antenna longitude --- The geodetic longitude of the antenna.
- Page 32 SNMP The ACU replies to MIB-II sysContact requests with the text entered at this system place. contact MIB File click here to download the MIB file Enter up to 4 trap destination IP addresses (dotted quad notation) to make SNMP trap the ACU sending traps by UDP to these hosts.
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Page 33: Handheld Terminal
Setup Page Example 5.7 Handheld Terminal The antenna may be moved by means of the optional handheld controller. The Handheld function is not yet available at ACU-RMU and ACU19 Version. Startup Set parameter 'RS485 address' on the ACUs Setup-page to 'TERM'. This enables communication between the ACU and the sat-nms handheld. -
Page 34: Frontpanel Operation
Cabinet: 15pol DSUB). After connecting the Handheld, push the Redraw button once. The start- up screen, that shows the installed software version is displayed for a few seconds. After that the menu for controlling the antenna is displayed automatically. Operation --- Emergency STOP, stops all Motors immediately, it has to be released by pushing the -button --- Releases the motor-lock that was set by pushing the STOP-button. - Page 35 operation are designed to operate the ACU locally. It is possible to select a new target, move the antenna incremental, set new pointing angles or select another step track mode. Advanced configuration parameters are available over the web interface. Please start reading at chapter 5.1 for more information.
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Page 36: Display Mode
3 --- Change to XL steps for AZ/EL 1 --- Change to L steps for AZ/EL For all directions: view from behind antenna. 'Large steps' normally are 10 times the step size configured for this axis. Pressing the 3 key enlarges them to 'XL steps', 100 times the standard step size. -
Page 37: Select Targets
the menu by pressing the key . To leave the menu, repeatedly press the key until the display screen appears again. If there are no keystrokes for 1 minute, the ACU automatically leaves the menu and returns to display mode. The menu structure is shown below: MENU SELECT TARGET STEP MOVE... -
Page 38: Set Tracking Mode
The lower display line shows the actual value. You enter the new value, using the number keys. The digits fill the entry field from right to left, like with a pocket calculator. The key may be used to delete the last digit. To accept the edited value, press . -
Page 39: The Tcp/Ip Remote Control Interface
To read a parameter from the ACU, instead of a new parameter value a question mark is sent: name=? The ACU replies the actual value in a complete message: name=value A complete list of the parameter the ACU knows is shown later in this document in chapter Parameter list . -
Page 40: Parameter List
This interface is not yet implemented in the ACU19 and ACU-RMU! At these versions, you have to select 'NONE' to enable the function of optional frontpanel display and keyboard. If another setting is selected, an optional frontpanel and keyboard has no function. If an address 'A' .. - Page 41 AZ antenna 3dB aabw ° beamwidth Antenna abs. aalt 0 .. 8000 altitude aamp AZ Amplitude AZ Calibration acal -3600.000 .. 3600.000 ° offset Calculate offset aclc ° from Az. value acoe below acou -180.000 .. 180.000 ° Antenna course addr A B C D E F G NONE RS485 address...
- Page 42 asen SSI-20G SSI-24B SSI-24G RESOLVER sensor type VOLTAGE NONE AZ Low speed asth 0.0 .. 10.0 ° threshold astp 0.000 .. 90.000 ° AZ Step delta atar -180.000 .. 180.000 ° Az. target value AZ Motor atot 0 .. 32000 msec timeout AZ tracking step...
- Page 43 Lin/Crc switch cpos LINEAR CIRCULAR SWITCHING INVALID position Linear / circular ctar LINEAR CIRCULAR UNKNOWN switch Antenna decl -90.000 .. 90.000 ° declination dele 0 .. 99 Delete target AZ Antenna diaa 0.0 .. 100.0 diameter EL Antenna diae 0.0 .. 100.0 diameter EL antenna 3dB eabw...
- Page 44 EL Calibration esca 0.000000 .. 100000.000000 scale SSI-13B SSI-13G SSI-17B SSI-17G SSI- 18B SSI-18G SSI-19B SSI-19G SSI-20B EL Position esen SSI-20G SSI-24B SSI-24G RESOLVER sensor type VOLTAGE NONE EL Low speed esth 0.0 .. 10.0 ° threshold estp 0.000 .. 90.000 °...
- Page 45 stop (RESET at the Web UI) nick -90.0 .. 90.0 ° Nick angle niko -90.0 .. 90.0 ° Nick offset note character string Note Output bits obit 00000000 .. FFFFFFFF (described below) orbt -180.000 .. 180.000 °E Orbit position PO Calibration pcal -3600.000 ..
- Page 46 save 0 .. 99 Save target scnt 0 .. 65535 Save count SNMP system scon contact Sleep time up to slee 0 .. 65535 the next tracking action SNMP system sloc location Smoothing smth 0 .. 6 interval SNMP system snam name srno...
- Page 47 trty NEVER ONCE FOREVER on fault Tracking retry trty NEVER ONCE FOREVER on fault tsta character string Tracking state Tracking step tstp 1 .. 100 size ON Sends a wdog OFF ON heatbeat to the AUX 8 output Remarks: 1) Software capabilities are summed from the following values: value description step track &...
- Page 48 parameter. Bit definitions in 'ibit' (input bits and flags): The 'ibit' value is returned as a 32 bit hexadecimal number. The bit number 0 means the least significant bit, bit number 31 the most significant bit in this number. name description IN_PLHLM polarization hi limit...
- Page 49 LIMIT limit switch summary AZSTOP azimuth stopped ELSTOP elevation stopped PLSTOP polarization stopped GPSFLT GPS receiver fault Bit definitions in 'obit' (output bits): The 'obit' value is returned as a 32 bit hexadecimal number. The bit number 0 means the least significant bit, bit number 31 the most significant bit in this number.
- Page 50 OUT_AUX6 not used OUT_SUMMARY summary fault relay (1 == OK) OUT_TRACKING tracking fault relay (1 == OK) OUT_BCPR1 reserved for beacon receiver frequency select OUT_BCPR2 reserved for beacon receiver frequency select OUT_BCPR3 reserved for beacon receiver frequency select OUT_BCPR4 reserved for beacon receiver frequency select OUT_AUX7 not used OUT_AUX8...
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Page 51: One Line Read Via Tcp/Ip
7.5 One line read via TCP/IP For compatibility with the sat-nms power sensor, the ACU also may be polled for an automated monitoring by the requesting the 'position' document with a HTTP GET command. Assuming the ACU listens to the IP address 10.0.0.1, the complete URL for the request is: http://10.0.0.1/point?fmt=txt The 'fmt=txt' parameter forces the power sensor to reply a one line text document rather than the HTML coded page which is normally displayed by the web browser. -
Page 52: Pointing / Motor Control
flexibility for application where the sat-nms ACU replaces an existing antenna controller. Position sensor types Actually there are three types of position sensor interfaces available for the ACU. The interfaces principally are field-replaceable, however changing interface boards inside the ACU should be done by skilled personnel only. - Page 53 The sat-nms ACU performs the pointing / motor control as a closed control loop, independently for each axis. If the measured position value differs from the target value, the motor is activated to compensate this difference. It makes no difference if a new target value has been commanded or if the antenna has moved a little bit due to a squall.
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Page 54: Steptrack
Remark for operation in the northern/southern hemisphere: Look 'through the antenna' to the satellite for the correct orientation of left/right, up/down and clock/counterclockwise. southern axis northern hemisphere hemisphere FWD moves the antenna to the right, the position sensor must azimuth increasing the measured value. -
Page 55: Acu And Beacon Receiver
This method minimizes the impact of noise and measurement errors to the evaluated peak position. The benefit is, that the size of depointing steps can be reduced to a very small value. A tracking cycle consists of 2 .. 4 tests steps. With each step the antenna is moved a certain angle increment, the beacon level is measured before and after the movement. -
Page 56: Smoothing
If a sat-nms LBRX beacon receiver is used with the ACU, it additionally gets connected to the ACU through an Ethernet cable. Usually an Ethernet hub is used to connect the ACU, the LBRX and the controlling computer. With a sat-nms LBRX beacon receiver some additional features are available for the tracking: The beacon receiver sends the actual level as UDP packets over the LAN. -
Page 57: Steptrack Parameters
recently evaluated peak position. The usage of the smoothing function is recommended when tracking satellites where the antenna pointing oscillates less than 25% of the antenna's 3dB beamwidth. For tracking inclined orbit satellites, the usage of smoothing may be problematic as such satellites may require an significant position oscillation at 12 hours cycle time (sin 2wt). -
Page 58: Adaptive Tracking
receiver, the ACU automatically reads the frequency from the receiver. Trackingcycletime --- The cycle time specifies how often the ACU shall perform a step track cycle. The value is to be entered in seconds. In fact, the parameter does not specify a cycle time but the sleep time between two tracking cycles. -
Page 59: The Sat-Nms Adaptive Tracking Algorithm
8.4 Adaptive Tracking Adaptive tracking is an extension to the standard step track method. The ACU records the tracked positions over several days. It computes a mathematical model from the recorded data which is used to predict the antenna position in case of a beacon receive failure. The following paragraphs describe how the sat-nms adaptive tracking algorithm works. - Page 60 plain sine function may be tracked with the MEDIUM model. The amplitude of the double frequency sine simply is near zero in such a case. Finally the LARGE model adds a linear movement to the components of the MEDIUM model. This is required to track significantly inclined satellites over a period of several days.
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Page 61: The Tracking Memory
Quality information As mentioned above, the amplitude of the satellite's movement is used as a measure of the step track quality. This is because the step track measurement uncertainty is an constant angle which primarily depends on the antenna size. Beside the amplitude, the ACU evaluates for each axis a figure called jitter. -
Page 62: Adaptive Tracking Parameters
M emory reset The contents of the tracking memory must be erased when the ACU starts to track a new satellite. This is done in the following situations: A stored position (target) is recalled. The ACU is switched off. 'CLEAR MEMORY' is chosen at the tracking parameters page. -
Page 63: Program Tracking
to 'STEP', the ACU leaves the antenna where it is if the beacon level drops below the limit.Adjusting the threshold level that adaptive tracking is switched as expected must be done carefully and may require some iterations, specially if the beacon is received with a low C/N. -
Page 64: File Format
next 'tracking interval'. Be aware, that the clock in the ACU must be set precisely to make the feature work as expected. 8.5.2 File Format The "program.txt" file is a plain text file containing a three or four column table. Empty lines are ignored, comments starting with a '#' as well. -
Page 65: Specifications
If a fault stay active in one axis and don't disappear during a RESET, the tracking stops the operation. For example if the polarisation have a fault, azimuth and elevation stop the tracking operation. 9 Specifications Technical Specification Position Encoding with three different interface possibilities --- Resolver, digital SSI and potentiometer Quantization Error --- Resolver 16bit: 0.0055°, SSI 13bit 0.044°, 16bit 0.0055°, 17bit 0.0028°, 19bit 0.0007°...
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