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Laversab 6580 User Manual

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MODEL 6580 Rev. C
USER'S MANUAL
LAVERSAB INC.,
505 GILLINGHAM LANE
SUGAR LAND TX, 77478
(281) 325-8300
FAX: (281) 325 8399
Email: aservice@laversab.com
Document Number: 125-9070C
Date: March 5, 2018

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  • Page 1 MODEL 6580 Rev. C USER'S MANUAL LAVERSAB INC., 505 GILLINGHAM LANE SUGAR LAND TX, 77478 (281) 325-8300 FAX: (281) 325 8399 Email: aservice@laversab.com Document Number: 125-9070C Date: March 5, 2018...
  • Page 2 Inc. warrants products of its own factory against defects of material or workmanship for a period of one year from date of sale. Liability of Laversab Inc. under this warranty shall be limited to replacing, free of charge (FOB Houston, Texas), any such parts proving defective within the period of this warranty, but Laversab Inc.
  • Page 3 COPYRIGHT NOTICE Copyright (c) 2011 onwards by Laversab Inc. All rights reserved. The content of this manual may not be reproduced in any form by any means, in part or in whole, without the prior written permission of Laversab Inc.

  • Page 4: Revision History

    REVISION HISTORY Document No. Release Date Description 125-9070A MODEL 6580 Rev. A October, 24, 2011. 125-9070A2 April 25, 2012. MODEL 6580 Rev. A2 125-9070A3 July 09, 2012. MODEL 6580 Rev. A3 125-9070B August 29, 2013. MODEL 6580 Rev. B 125-9070C March 5, 2018 MODEL 6580 Rev.
  • Page 5 WARNING THE 6580 USES LINE VOLTAGES FOR ITS OPERATION WHICH ARE POTENTIALLY DANGEROUS. IMPROPER OPERATION OF THIS EQUIPMENT MAY RESULT IN PERSONAL INJURY OR LOSS OF LIFE. HENCE THE EQUIPMENT DESCRIBED IN THIS MANUAL SHOULD BE OPERATED ONLY BY PERSONNEL TRAINED IN PROCEDURES THAT WILL ASSURE SAFETY TO THEMSELVES, TO OTHERS AND TO THE EQUIPMENT.

  • Page 6: Table Of Contents

    Section 2: Controls and Connections ................ 2 2.1 Front Panel ....................... 2 2.2 Rear Panel ........................7 Section 3: Understanding the 6580 ................9 3.1 Start Up ........................9 3.2 Main Operating Screen ..................11 3.2.1 Displayed Parameters ................... 11 3.2.2 Target Value Entry...
  • Page 7 TABLE OF CONTENTS (contd.) 6.2 General Notes ......................46 6.3 Ps Calibration ......................47 6.4 Pt Calibration ......................48 Section 7: Maintenance ....................52 Section 8: Communication Interface ................53 8.1 RS232 Serial Interface ....................53 8.2 IEEE-488 Interface ....................53 8.3 Communication Syntax ...................

  • Page 8: Introduction

    The user has the ability to download into the 6580 a profile of set-points to be controlled in a sequence. Once such a profile has been setup, the user can command the unit to move from one set-point to the next simply by pushing the 'GO' button.

  • Page 9: Controls And Connections

    CONTROLS AND CONNECTIONS Note: Pt = Pitot and Ps = Static FRONT PANEL The front panel of the 6580 is shown in Figure 2.1 The various components of the front panel are described below. STATIC Port This port can be used to connect to the Static port of the Unit Under Test (UUT). This port has a factory-installed AN-4 fitting.
  • Page 11 There are five keys just below the display. NEXT SCREEN and PREVIOUS SCREEN are used to move between the different operating screens of the 6580. At present there are only three upper level operating screens : Main, Calibrate and Self test.
  • Page 12 The ENTER key is used to accept numeric entries and also select units and modes. TARGET VALUE KEYS : There are typically 3 parameters that the 6580 controls - Altitude, Climb and Airspeed. Each parameter has its own target value key. The Pt/AIRSPEED key is used to select Pt or Airspeed target value entry, the Ps RATE/CLIMB key is used to select Climb value entry, and the Ps/ALTITUDE key is used to select Ps or Altitude value entry.

  • Page 14: Rear Panel

    For more information on Mode Selection please refer to Section 3.2.4. REAR PANEL The rear panel of the 6580 is shown in Figure 2.2 The various components of the rear panel are described below. STATIC Port This port can be used to connect to the Static port of the Unit Under Test (UUT). This port has a factory-installed AN-4 fitting.
  • Page 15 The 6580 will accept AC voltages between 90-260 VAC, 47-440 Hz. Typical power consumption is less than 200 VA. Caution: A power cord with a suitable Earth connection must be used to power the 6580 to prevent the possibility of a shock hazard.

  • Page 16: Understanding The 6580

    Connect power to the 6580 and turn it ON. DO NOT connect any UUT to the output ports. The 6580 will turn ON with one beep. The display will briefly show the sign-on screen and then go into the Main screen. The Main screen should appear as follows:...
  • Page 17 Main Leak mode Leak Operating Screen Screen Function Select Function Select Screens (2) IEEE address View Limits Password Change Limits Change knots rate Execute profile (Return to Main) Setup Profile Height Correction Set Ground Go to Ground Encoder Next Screen Password Calibration Next...

  • Page 18: Main Operating Screen

    6. MAIN OPERATING SCREEN Most of the operation of the 6580 is done in the Main Screen. All the pertinent parameters are displayed on this screen. The screen is also used to change Target values, Units, and Modes.
  • Page 19 Units: knots Feet/min Feet Actual: 101.2 3500 1005 Target: 20.0 3000 Parameter 3. Climb Units: Unit of measurement for displaying the rate of change of the Static output, or Climb. Normally, the climb unit used is ‘Feet/min’ for displaying rate of change of altitude.
  • Page 20 (climb/dive) on the Static output. In the sample screen below, the 6580 has been commanded to achieve a climb of 3000 Feet/min. on the Static output. A dive would be indicated by a negative value. The Climb “Target” value is...
  • Page 21 “Actual” value in the current Pitot units. The pressure is not being changed by the 6580. In this mode, the Pitot valve inside the 6580 that is used to change the pressure at the Pitot output is pneumatically isolated from the Pitot output. In the Measure mode, the Pitot “Target”...
  • Page 22 “Actual” value in the current Static units. The pressure is not being changed by the 6580. In this mode, the Static valve inside the 6580 that is used to change the pressure at the Static output is pneumatically isolated from the Static output. In the Measure mode, the Static “Target”...
  • Page 23 Static half Units: knots Feet/min Feet Actual: 101.2 3500 1005 Target: 20.0 3000 The Main operating screen will be used almost all the time during normal operation for commanding target values, viewing actual values, setting units and modes. Error Messages: The Main screen is also used to display error conditions as they occur.

  • Page 24: Target Value Entry

    Pitot target value : A Pt or airspeed target value can be entered using the Pt/AIRSPEED key. On pressing this key the target value field for Pt gets put into reverse video. The 6580 is now awaiting numeric entry from the operator. While this new value is being entered, the old target value is still effective and does not in any way affect the Pitot output.
  • Page 25 Remote unit and the main unit. Please abort and contact the factory. If GO is pressed after ENTERing the value, the 6580 will try to achieve this new target value ONLY IF the Pitot output is in the CONTROL mode. Therefore, it is desired that both Pitot and Static values be entered so that both are blinking before the GO key is pressed.

  • Page 26: Units Selection

    Target Value Jog Each of the three target values can be jogged up or down in small increments by using the arrow keys. This is done to help the operator achieve a perfect reading on the instrument in the aircraft, by bumping the set-point in small increments. To jog a value, select the value by pressing the appropriate target value key and then use the arrow keys.
  • Page 27 Target: 0.064 3000 The unit selection will not become effective until the GO key is pressed. The 6580 will return to the old units if the CANCEL key is pressed. . Static Units: There are four Ps units to choose from: Feet, Ps inHg (Psin), meters, and mbar (Psmb).

  • Page 28: Mode Selection

    10.000 29.054 The unit selection will not become effective until the GO key is pressed. The 6580 will return to the old units if the CANCEL key is pressed. . It must be noted that the units change does not perform a conversion between the units of feet/minute or meters/minute to Ps inHg/min or Ps mbar/min.
  • Page 29 4 of the display, with the cursor under “MEAS”. Units: knots Feet/min Feet Actual: 101.2 3500 1005 Target: 20.0 3000 Pt mode : MEAS, LEAK, CTRL Move the cursor to the desired mode and then press ENTER. The selected mode is displayed on the screen and blinks until the GO key is pressed.
  • Page 30 This process is termed as Equalization. While the 6580 is undergoing this process, the term 'EQZN' is displayed on the main screen in place of the “Actual” value. The whole process usually takes about 15 seconds or less to complete.

  • Page 31: Leak Screen

    Following the Equalization process, only when the actual value on the Static output is less than 2000 feet from Ground and the Pitot output is less than 150 knots, the 6580 will automatically inject a small vacuum on the Static output and a small pressure on the Pitot output.
  • Page 32 Pressing the CANCEL key allows you to exit from the Leak Screen, back to the Main Operating Screen. If the mode prior to entering the Leak mode was Control then the 6580 will revert back to Control mode on exiting the Leak Screen.

  • Page 33: Timed-Leak Screen

    3.3.1 TIMED-LEAK SCREEN When both Pitot and Static outputs are simultaneously put into Leak mode, then the leak screen displays the leak values in a timed-leak format as shown below. The sample screen shown below assumes the following: a. Units are set to knots and feet b.
  • Page 34 To accept the setting of the 1 leak-timer and move the arrow to the 2 leak-timer, press ENTER. The screen will appear as below. Change the 2 leak-timer value if desired, using the Arrow keys. The leak-timer value must be changed before the elapsed time reaches 58 seconds.
  • Page 35 1:02 (2 seconds after the elapsed time reaches the first leak-time) , the leak screen will be updated and appear as shown below. The second line shows that at the end of 1 minute the knots value leaked to 99.5 knots and the accumulated leak in 1 minute was -0.5 knots, since the knots value at the start of the leak check was 100 knots.

  • Page 36: Self Test Screen

    SELF TEST SCREEN As part of the start up procedure, it is recommended that a Self Test be performed on the 6580. Before performing the Self Test you must follow the start up procedure explained in section 3.1. The Main Operating Screen must be displayed on the Remote unit. There should be no errors displayed on line 4 of the display.

  • Page 37: Function Select Screen

    After the pump section test has passed successfully, the screen is cleared and the status of the remaining tests is displayed as shown below. Pump section OK Ps control system OK Pt control system OK. Tests successful. After the tests have been completed successfully, press the CANCEL key to return to the Main Operating Screen.

  • Page 38: Function 0: Ieee Address

    3.5.0 FUNCTION 0 : IEEE ADDRESS This function allows the user to enter a valid IEEE-488 address for the 6580. This address is meaningful only if the “IEEE” option is provided on the 6580. A valid address between 1 and 30 may be entered on the screen shown below.

  • Page 39: Function 2: Set Limits

    If the target value exceeds any of the limits, an error is generated. The Actual values are also checked when the 6580 is in the “Control” mode. If any of these limits is exceeded by a pre-defined amount, an error will be generated and the 6580 will revert to “Measure” mode.
  • Page 40 3. Max. Mach : This limit is usually set to the maximum allowable Mach number that the UUT can tolerate. The maximum value for this limit is 5.0 and the minimum is 0.1 A typical setting for this limit is 1.0. 4.

  • Page 41: Function 3: Set Knots Rate

    This indicates that the current profile point is ready for execution and awaiting the “GO” key to be pressed. When the “GO” key is pressed, the 6580 will execute the profile point, i.e. it will change to Control mode and move towards the desired targets.

  • Page 42: Function 5: Setup Profiles

    3.5.5 FUNCTION 5: SETUP PROFILES This function is used to load profiles into the 6580 from a PC. A full explanation of how to load profiles into the 6580 is provided in Section 4.. The following screen will come up when Function 5 is selected.

  • Page 43: Function 7: Set Ground

    The “Set Ground” function is used to indicate to the 6580 the ambient “Ground” pressure. Before connecting the 6580 to the UUT, just after the Self Test has been performed, it is recommended that this function be invoked. The Pitot and Static ports must still be open to ambient when using this function.
  • Page 44 If an altitude encoder is electrically connected to the Encoder interface connector on the rear panel of the 6580 (not shown in Fig. 2.2) and is pneumatically connected to the Ps output of the 6580, then the 10-bit code on line 2 and flight level on line 3 will correspond to the altimeter reading.

  • Page 45: Profiles

    4.1 WHAT IS A PROFILE. A profile is a set of up to 50 points that tell the 6580 what you would want it to do at each point. Each point consists of 7 parameters: 1) Pitot units, 2) Pitot mode, 3) Pitot target value, 4) Static units, 5) Static mode, 6) Static target value and 7) Static rate (Climb) target value.
  • Page 46 Rate target value In the sample profile, Row 3, which is the first point in the profile, tells the 6580 to go in Control mode to 100 knots on the Pitot side, and in Control mode to 0 feet at 6000 feet/min on the Static side.

  • Page 47: Creating A Profile

    12 characters. On Row 2, middle cell, replace “11” with a profile number between 1 and 20 that you would like this profile to be saved as, in the 6580. Do not change row 2 right-most cell. In rows 3 through 50, change the cells as per the points you want to generate in your test.

  • Page 48: Setting Up Hyperterminal

    Your profile has been created. 4.3 SETTING UP HYPERTERMINAL You download a profile into the 6580 using the Hyperterminal program. At first you need to setup Hyperterminal. You only need to do this once.

  • Page 49: Downloading A Profile

    To verify that the 6580 file is setup in Hyperterminal, select “All Programs” from the desktop, select “Accessories”, select “Communications”, select “Hyperterminal”. The “6580” icon should appear. If it does not appear then you will need to repeat steps 1 and 2 above.

  • Page 50: Executing A Profile

    4.5 EXECUTING A PROFILE On the 6580, select Function 4: Execute profile. On line 4 on the Main screen, a profile number is required to identify the profile. This number is x.y where x is the profile number and y is the point number within that profile.
  • Page 51 When a profile goes into leak mode, the Leak Screen will be displayed. The profile will stay in this screen until the user enters CANCEL to exit the leak screen. The 6580 returns to the main screen where the user must press ENTER to invoke the next profile point.

  • Page 52: Typical Use

    This section assumes that the user has read Section 3 and understood the functioning of the 6580. Please do not follow the sequence shown below without first reading Section 3. The following steps show a typical use of the 6580 for checking aircraft instruments.

  • Page 53: Calibration

    4.0 inHg abs. The 6580 has a drift of typically 0.005 %FS per year. Therefore it needs to be calibrated once a year to perform adequately as a calibration standard for air data equipment.

  • Page 54: Ps Calibration

    Step 2. Turn on the 6580 and allow it to warm up for about 30 minutes. Change the units to “PsinHg” on the Static side and “PtinHg” on the Pitot side. Refer to section 3.2.3 on how to change units.

  • Page 55: Pt Calibration

    Step 2. Turn on the 6580 and allow it to warm up for about 30 minutes. Change the units to “PsinHg” on the Static side and “PtinHg” on the Pitot side. Refer to section 3.2.3 on how to change units.
  • Page 56 Step 4. Generate a pressure of 100.000 inHg absolute, allow the pressure to stabilize for 2 minutes and take the reading on the Pt port (PtinHg) of the 6580. This is the second of your “Before” calibration adjustment reading. It will indicate the zero plus slope drift since the previous calibration.
  • Page 57 Step 8. On the keypad of the remote unit, press “PREV SCREEN”. The display will return to the Main Screen. If you press “CANCEL” the calibration adjustment will become void. Step 9. Turn the 6580 OFF, wait 30 seconds and then turn it back ON. The calibration adjustment is now complete for the Pt port.
  • Page 58 Model: 6580 Serial#: 74678 Full scale: Ps: 38 inHg Pt: 100 inHg Last Calibrated date: 10/10/01 _______________________________________________________________________ CALIBRATION RESULTS STATIC PRESSURE (Ps): TEST POINT AS FOUND AS LEFT DEVIATION inHg inHg inHg 1. Vacuum 1.001 1.000 0.001 2. Fullscale 38.002 38.000...

  • Page 59: Maintenance

    SECTION 7 MAINTENANCE Scheduled maintenance of the 6580 includes calibration once a year. The calibration procedure is described in Section 6. In addition to calibration, there is only one other item that requires regular maintenance: cleaning or replacing the fan intake filter as required.

  • Page 60: Communication Interface

    Connectors” cover on the top panel. This interface supports the following IEEE-488 functions. Source Handshake Acceptor Handshake Basic Talker Basic Listener Service Request Device Clear The IEEE-488 address of the 6580 can be changed using Function ‘0’ as described in Section 3.5.0.

  • Page 61: Communication Syntax

    Line Feed <LF>. To get data from the 6580 the unit must be addressed to Talk. Prior to asking the 6580 to Talk, the data to be sent by the 6580 must be specified through a command. For the 6580 to understand the command it must be in the Listen mode.
  • Page 62 Command Type Description PU=n Read/ Set Pt units as per following: units knots mach Pt inHg Qc inHg Pt mb Qc mb kmph SU=n Read/ set Ps units as follows: units Feet Ps inHg meters Ps mb PM=n Read/Set Pt mode to Measure (1), Leak (2), control (3) SM=n Read/set Ps mode to Measure (1), Leak (2), Control (3) Read current error ;...
  • Page 63 Command Type Description Command to cancel current settings IE=n Read/set IEEE address C1=n Read/set Pt vacuum calibration point C2=n Read/set Pt fullscale calibration point C3=n Read/set Ps vacuum cal. point C4=n Read/set Ps fullscale calibration point Activate new calibration points after new values have been entered for either C1 and C2, or C3 and C4.

  • Page 64: Appendix A: Error Codes

    APPENDIX A ERROR CODES All errors are displayed on line 4 of the display when the 6580 is in the Main screen. An error must be acknowledged before any other key entries are accepted. The error may be acknowledged either by pressing the CANCEL or the CLR key.

  • Page 65: Appendix B: Specifications

    APPENDIX B SPECIFICATIONS Static Output Pressure function range: 0.1 to 42 inHg resolution: 0.001 inHg accuracy: 0.002 inHg Altitude function range: -4000 ft. to 100,000 ft. resolution: 1 foot accuracy: 2 ft. @ 0 ft. 6 ft. @ 35,000 ft. 12 ft.

  • Page 66: Appendix C: Repair And Return Policies

    APPENDIX C REPAIR AND RETURN POLICIES If the product is mal-functioning, or prior to shipping the product to Laversab for repair, please contact the Laversab customer service department for further assistance. It is necessary to obtain a Return Material Authorization (RMA) number from Laversab before returning the product for repair.

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