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USING REMOTE COMANDS WITH A DAC-2200
TO READ/DECODE AN ERROR 8 PEDESTAL ERROR: 1. While at the Remote Command window key in: S0000, ENTER 2. Press ENTER to go to Remote Monitor window. SABC@ will be displayed (S followed by 3 letters and a @ symbol. The fourth character (letter C in the above case) is the pedestal error letter. Ref is an AZ Reference, encoder or Home Flag error. AZ is Azimuth, LV is Elevation and CL is Cross-Level. Decode the letter code using the chart below: Letter = REF AZ LV CL Description of pedestal error 0 0 0 0 None A 0 0 0 1 CL B 0 0 1 0 LV C 0 0 1 1 CL + LV D 0 1 0 0 AZ E 0 1 0 1 AZ + CL F 0 1 1 0 AZ + LV G 0 1 1 1 AZ + LV + CL H 1 0 0 0 Ref I 1 0 0 1 Ref + CL J 1 0 1 0 Ref + LV K 1 0 1 1 Ref + LV + CL L 1 1 0 0 Ref + AZ M 1 1 0 1 Ref + AZ + CL N 1 1 1 0 Ref + AZ + LV O 1 1 1 1 Ref + AZ + LV + CL REFERENCE SENSOR TESTING. 1. To monitor the reference sensors, go to the REMOTE COMMAND window, @0000 will be displayed. 2. Press the LEFT arrow to bring up the cursor and move it to underscore the @ character. 3. Use the UP or DOWN arrow key to select the lower case “v”, (v0000 should appear in the command window) 4. Hit ENTER. Press ENTER once more to display the REMOTE MONITOR window. 5. The lower display will show "v" and three 4 digit decimal numbers (v 1111 2222 3333). 6. The numbers represent the Cross Level and Level Tilt Sensor outputs and the azimuth encoder respectively. The Cross Level Tilt display should be 2048 when the level cage is level. It should decrease when the antenna is tilted to the left and increase when tilted to the right. The Level tilt display should be 2048 when the level cage is level. It should decrease when the antenna is tilted forward (EL down) and increase when tilted back (EL up). The Encoder display will show 2048 in the centre of the mechanical range (Relative 360.0), it will decrease in value as the antenna is rotated counter-clockwise (down to about 0102 at lower stop) and increase in value as the antenna is rotated clockwise (up to about 3994 at upper stop) . OPEN LOOP MOTOR TESTING. The DAC-2200 provides a means for driving each individual torque motor to test that motors functionality. By driving each axis and observing the resulting motion of the antenna, a coarse operational status of the motor and motor driver can be established. To manually drive the motors: 1. Go to the REMOTE COMMAND window @0000 will be displayed. Press the LEFT arrow key to bring up the cursor and move it to underscore the @ character. 2. Use the UP or DOWN arrow key to select a ^ symbol, (^0000 should appear in the command window), 3. Use the LEFT/RIGHT arrow keys to select other characters to edit, use the UP/DOWN to increment/decrement each character and then hit ENTER to command the selected drive. To drive the Cross Level motor, key in ^1064, ^1128 or ^1192 to drive the Cross Level axis left, off and right respectively. To drive the Level motor, key in ^2064, ^2128 or ^2192 to drive the level axis forward, off or back. To drive the Azimuth motor, key in ^3064, ^3128 or ^3192 to drive the azimuth axis CW, off or CCW. ANTENNA POSISTION ERROR MONITORING. The DAC-2200 provides a means for monitoring the position error of the antenna for diagnostic purposes. If this error is excessive, it indicates external forces are acting on the antenna. These forces may be the result of static imbalance, excessive bearing friction, cable binding, or wind loading. To view the position error: 1. Go to the REMOTE COMMAND window @0000 will be displayed. Press the LEFT arrow key to bring up the cursor and move it to underscore the @ character. 2. Use the UP or DOWN arrow key to select the lower case “x”, (x0000 should appear in the command window) and hit ENTER. 3. Press ENTER once more to display the REMOTE MONITOR window. The lower display will show "iv" and three 4 digit hex numbers. The numbers indicate Cross Level, Level and Azimuth errors at a resolution of 1 part in 65536 or 0.0055 degrees. For example a display like "iv FFFF 0001 FFFD" indicates the Cross Level error is -.005 degrees, the Level error is + .005 degrees and the Azimuth error is -.016 degrees. The normal range of these numbers is FFF0 to 000F and they typically will bounce around randomly within this range. TO RESET/RE-INITIALIZE THE ANTENNA. 1. While at the Remote Command window key in: ^0090, 2. Then press: ENTER. 3. Now if you press the NEXT key REMOTE INITIALIZING should be displayed. This resets the PCU on the antenna. The antenna will reinitialize with this command (Performs a similar function as a power reset of the antenna). SETTING THE SYSTEM TYPE IN THE PCU. 1. While at the Remote Command window key in: N0000, now find your system number out and enter it in as the final characters of the above. For example if the antenna had a system type of 7 then you would need to enter N0007. 2. Once you have entered the correct system number press ENTER. You should now see the number displayed below. 3. For example in the above case you will see displayed: REMOTE COMMANDS ##### 0007 4. Now press ENTER, until REMOTE PARAMETERS is displayed. 5. Now press the right arrow on the front panel, a cursor should appear at the top right of the screen. 6. Now press ENTER, you should now see: REMOTE PARAMETERS SAVED 7. The system type will now be saved to the PCU, the above needs to be repeated any time a new PCU is fitted. PCU QUERY. 1. To ask the PCU what the current system type saved to it is you need to go to the REMOTE COMMANDS window. 2. Now key in N0999 and press ENTER 3. If the current system type programmed in the PCU was for example 7 you would see: REMOTE COMMANDS 0007 DISPLAYING/SETTING INDIVIDUAL LOOP GAINS. VERY IMPORTANT: WHEN ENTERING ANY GAIN SETTINGS CHECK WHICH PCU SOFTWARE YOU ARE RUNNING AND REFER TO THE CORRECT COMMAND SHEET, THIS CAN BE CRITICAL. (If in doubt contact Sea Tel) 1. While at the Remote Command window key in: N0000 2. Now enter in desired entries as listed below: N1000, ENTER Sets CL loop gain to 000, CL will not drive. N1020, ENTER Sets CL loop gain to 020. N1999, ENTER Displays CL loop gain setting presently in the PCU. N2000, ENTER Sets LV(EL) loop gain to 000, CL will not drive. N2020, ENTER Sets LV(EL) loop gain to 020. N2999, ENTER Displays LV(EL) loop gain setting presently in the PCU. N3000, ENTER Sets AZ loop gain to 000, CL will not drive. N3020, ENTER Sets AZ loop gain to 020. N3999, ENTER Displays AZ loop gain setting presently in the PCU. 4. To save any changes you need to press ENTER until REMOTE PARAMETERS is displayed, then press the right arrow on the controller front panel, a cursor will now appear in the top right corner. 5. Now press ENTER, saved should now be displayed in the bottom left corner. TO ADJUST TILT: 1. While at the Remote Tilt Window, press the right arrow to activate tilt mode. (A cursor should be displayed in the top right corner.) 2. Place a center bubble on the top of the level cage. 3. Use the UP and DOWN arrows to adjust LV until the level cage is level in this axis. 4. Then use the LEFT and RIGHT arrows to adjust CL until the level cage is level in this axis. 5. Once the level cage is level in both axis, wait 30 seconds then press the ENTER key. 6. Press ENTER again to step menu to the REMOTE PARAMETERS window. 7. Now press the right arrow and ENTER, saved should now be displayed. 8. Check the center bubble again after saving. FREQUENTLY USED COMMANDS: ^0067 Toggles dishscan on/off. ^0090 Re-initializes the PCU. ^0000 Resets the PCU to normal mode.