Related Manuals for Laversab 6580-M1
Summary of Contents for Laversab 6580-M1
- Page 1 MODEL 6500 Rev. H USER MANUAL LAVERSAB INC., 505 GILLINGHAM LANE SUGAR LAND TX, 77478 (281) 325-8300 FAX: (281) 325 8399 Email: aservice@laversab.com Document Number: 125-9014 Rev.H Date: March 05, 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) 2014 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.
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Page 4: Revision History
REVISION HISTORY Document No. Release Date Description 125-9014 Rev.A 02/24/1993 6500 User’s Manual 125-9014 Rev.B 06/22/1998 6500 Rev.B User’s Manual 125-9014 Rev.C 12/28/2004 6500 Rev.C User’s Manual 125-9014 Rev.D 02/15/2005 6500 Rev.D User’s Manual 125-9014 Rev.E 06/06/2005 6500 Rev.E User’s Manual 125-9014 Rev.F 08/27/2009 6500 Rev.F User’s Manual... - Page 5 WARNING THE 6500 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.
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Page 6: Table Of Contents
TABLE OF CONTENTS Warranty ..........................i Copyright notice, disclaimer ....................ii Revision History ........................iii Warning ..........................iv Section 1: Introduction ....................1 Section 2: Controls and Connections ................ 2 2.1 Front Panel ....................... 2 2.2 Rear Panel ........................7 Section 3: Understanding the 6500 ................ - Page 7 TABLE OF CONTENTS (contd.) 6.2 General Notes ......................46 6.3 Ps Calibration ......................46 6.4 Pt Calibration ......................48 Section 7: Maintenance ....................51 Section 8: Communication Interface ................52 8.1 RS232 Serial Interface ....................52 8.2 IEEE-488 Interface ....................52 8.3 Communication Syntax ...................
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Page 8: Introduction
SECTION 1 INTRODUCTION Note: Pt = Pitot and Ps = Static The model 6500 is a rack mount, high accuracy automated pressure controller, specifically designed for controlling air data parameters such as altitude, airspeed, Mach and climb. This instrument can also be used to control pressures in units of inHg and mbar. The 6500 requires external vacuum and pressure supplies in order for it to perform the control function. -
Page 9: Controls And Connections
SECTION 2 CONTROLS AND CONNECTIONS Note: Pt = Pitot and Ps = Static FRONT PANEL The front panel of the 6500 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 Power ON/OFF switch This is a Push On / Push Off switch. In the depressed position the switch in ON. This switch is used to connect AC power to the unit. When power is applied to the unit, the front panel display will be illuminated.
- Page 12 It is used to exit out of other screens like Leak test and Function select. The CANCEL key is also used to acknowledge error messages or to exit from an executing profile. NUMERIC KEYS : These keys are used for numeric entry of target values and other numeric data. The '+/-' key operates just like on a calculator and is used to enter negative values.
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Page 14: Rear Panel
Remote Connection An optional Remote Unit may be connected to the 6500 here. For further details, please contact Laversab. RS232 interface The connector is a standard DB-9 female connector used for a serial RS232 interface. It can be connected directly to the “COM”... - Page 15 Encoder interface The optional Encoder interface is available at this DB-15 connector. For details on this interface, please refer to Section 3.5.8. IEEE-488 (GPIB) interface A standard 24-pin female IEEE-488 interface connector is available on the rear panel. Remote communication with the 6500 is possible through this interface. For more details on using this interface, please refer to Section 8.
- Page 16 [9] & [10] Vacuum Ports These ports are used for connecting a vacuum supply to the 6500. A vacuum supply of 0.3 inHg absolute or lower is ideal, and must be connected to both vacuum ports for proper operation. The vacuum supply must be capable of achieving a pressure that is at least 0.5 inHg lower than the lowest desired controllable pressure on the 6500;...
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Page 17: Understanding The 6500
SECTION 3 UNDERSTANDING THE 6500 Note: Pt = Pitot and Ps= Static The 6500 is typically used to calibrate and check air data instruments like altimeters, climb indicators, and airspeed/ Mach indicators in an instrument shop. This section will explain how to use the 6500 to perform these functions. - Page 18 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...
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Page 19: Main Operating Screen
Interaction with the 6500 is done through several different screens that are displayed.. All the screens are shown in Figure 3.1. Of the screens shown in Figure 3.1, the Self Test screen is used only at startup, all the Function Select screens are used only a few times during normal operation and also when first setting up the 6500. - Page 20 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 21 below, the current rate of change of pressure at the Static output is 3500 feet/min.. This value is updated every 0.25 seconds. Units: knots Feet/min Feet Actual: 101.2 3500 1005 Target: 20.0 3000 Parameter 7. Pitot “Target” value: This is the value that you command the 6500 to achieve on the Pitot output.
- Page 22 meaningful only when the Static output is in the “Control” mode. This is explained later in this section. How to change the Climb “Target” value is explained in section 3.2.2. Units: knots Feet/min Feet Actual: 101.2 3500 1005 Target: 20.0 3000 Parameter 10.
- Page 23 In the Measure mode, the pressure at the Static output is simply being measured and displayed as the “Actual” value in the current Static units. The pressure is not being changed by the 6500. In this mode, the Static valve inside the 6500 that is used to change the pressure at the Static output is pneumatically isolated from the Static output.
- Page 24 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.
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Page 25: Target Value Entry
3.2.2 TARGET VALUE ENTRY Note: Target values are maintained through a power OFF/ON cycle. 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 6500 is now awaiting numeric entry from the operator. - Page 26 will the value become effective. If you change your mind and want to abort the new value entry, press CANCEL to exit the value entry mode. You can press CANCEL even when the value is blinking. In the above example, if you were to press CANCEL the old Pt target value of 20.0 will remain effective. If there is an error in the value being entered then that error will be displayed on line 4 of the display.
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Page 27: 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 28 Engine pressure ratio (EPR). EPR is defined as the ratio of Pt to Ps and is unit-less. Any of these units can be selected by pressing the Pt units key. The choices will appear on line 4 of the display, four at a time. The cursor is placed under the first choice. The arrow keys can be used to move the cursor.
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Page 29: Mode Selection
used to move the cursor. The UP ARROW key moves the cursor left, the DOWN ARROW key moves the cursor right. The sample screen below shows the different Ps units, with the cursor under “Feet”. Units: knots Feet/min Feet Actual: 101.2 3500 1005... - Page 30 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 31 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. The new mode will not become effective until the GO key is pressed. The sample screen below shows the selected Static mode as “LEAK”.
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Page 32: 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 6500 will automatically inject a small vacuum on the Static output and a small pressure on the Pitot output. - Page 33 d. Pt: (Ps:) Shows the actual value of the output that is not in leak test. e. Instant Leak rate: Shows the instantaneous rate at which the output is leaking. For the Static leak check this number is updated every 0.25 seconds and shows “0” for leaks less than 20 ft/min.
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Page 34: 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 35 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. The 2 leak-timer value can be adjusted between 2 and 19 minutes. 100.0 knots 0 ft/min.
- Page 36 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. The second line also shows that at the end of 1 minute, the altitude was at 14965 feet and the accumulated leak in 1 minute was - 35 feet, since the altitude was at 15000 feet at the start of the leak check.
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Page 37: Self Test Screen
As part of the start up procedure, it is recommended that a Self Test be performed on the 6500. 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 38: Function Select Screen
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. If any of the tests fail, then note the failure, turn OFF the unit and contact the factory. FUNCTION SELECT SCREEN There are 10 different functions that can be performed. -
Page 39: Function 0: Ieee Address
Select function ( UP ARROW for functions 1 to 3 ) Execute profile Set profiles Height Correction Set “Ground” Go to “Ground” Once in the correct screen, select a number to go to the desired function. An explanation of each of the functions is given below. 3.5.0 FUNCTION 0 : IEEE ADDRESS This function allows the user to enter a valid IEEE-488 address for the 6500. -
Page 40: Function 2: Set Limits
3.5.2 FUNCTION 2: SET LIMITS To set the limits, press 2 on the Function Select screen. Access to the “Set Limits” screen is protected by means of a password. Enter the password followed by the ENTER key on the screen shown below. SET LIMITS Please enter password : The correct password will take you into the “Set Limits”... - Page 41 setting for this limit is 1.0 but the factory vakue may be set as 5.0 4. Max. Feet : This limit is usually set to the maximum altitude that the UUT can tolerate. The maximum value is 80,000 and the minimum is 0. A typical setting for this limit is 55,000 but the factory value may be set as 80,000.
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Page 42: Function 3: Set Knots Rate
CURRENT RATE = 250.0 knots /min. NEW RATE = knots /min. min : 50 , max : 500 The knots rate is the rate at which the Actual airspeed value is ramped towards the Target airspeed value. A typical knots rate value of 500.0 is ideal for most operations. Enter the desired value followed by the ENTER key. -
Page 43: Function 5: Setup Profiles
Once the targets have been achieved, you can move to the next profile point by pressing ENTER. Then, the parameter values in point 2 of profile # 2 will be displayed, the profile number will change to “2.2” and will again flash, awaiting the “GO” key. If you want only to view the profile without executing it, then DO NOT press the “GO”... -
Page 44: Function 7: Set Ground
3.5.7 FUNCTION 7: SET GROUND The “Set Ground” function is used to indicate to the 6500 the ambient “Ground” pressure. Before connecting the 6500 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 45: Function 9: Encoder
3.5.9 FUNCTION 9: ENCODER This function is valid only when the 6500 is provided with the “Encoder” interface option. When this function is selected, Static units must be “Feet”. If not, the following screen will be displayed. Static units must be Feet Press GO to continue Pressing “GO”... -
Page 46: Profiles
SECTION 4 PROFILES Profiles are created in Microsoft Excel and downloaded into the 6500 through the COM1 port on your PC using the Hyperterminal program that is normally available on all PC’s. 4.1 WHAT IS A PROFILE. A profile is a set of up to 50 points that tell the 6500 what you would want it to do at each point. - Page 47 Row 2 middle cell shows the number of the profile. This profile has a number 3. This tells the 6500 that this profile is to be loaded in as profile number 3. When profile 3 is executed on the 6500, this “Sample” profile will be executed. This number can be any number between 1 and 20.
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Page 48: Creating A Profile
Row 13 (point 11) takes Pitot down to 20 knots and ramps Static back to “Ground” at 6000 ft/min. Row 14 (point 12) puts both Pitot and Static into Measure mode. 4.2 CREATING A PROFILE Start with opening the “Profile Template.xls” file. Do not change anything on Row 1. -
Page 49: Setting Up Hyperterminal
where the Static port is put into Leak mode at 18,000 feet. Caution: If you are using Mach on the Pitot side, make sure that while the Static side is moving from a low altitude to a higher altitude, the target Mach number must be kept low (about 0.200). -
Page 50: Downloading A Profile
Properties”. Setup the Port Settings as follows: Bits per second: 9600 Data Bits: Parity: None Stop Bits: Flow control: None Select “Apply”. Then select “OK”. This will take you into the “6500 Hyperterminal” window. Select “File”. Select “Properties”. A new dialog box “6500 Properties” appears. Select the “Settings”... -
Page 51: Executing A Profile
After the profile has completed downloading, the last section should say “PASS”. If it does not then the profile did not download correctly. If no characters are echoed when you open the .txt file to download then you probably have a communication problem. - Page 52 Press ENTER to invoke the next profile point. All parameters of the point will be shown on the screen and the point number will flash on line 4. ENTER allows the user to view an entire profile without executing any point. It also allows the user to skip certain points if so desired.
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Page 53: Typical Use
SECTION 5 TYPICAL USE This section assumes that the user has read Section 3 and understood the functioning of the 6500. Please do not follow the sequence shown below without first reading Section 3. The following steps show a typical use of the 6500 for checking aircraft instruments. The following steps must be performed at the start of each day. -
Page 54: Calibration
SECTION 6 CALIBRATION EQUIPMENT: This calibration procedure requires the following equipment: 1. Vacuum pump. 2. Pressure supply of clean, dry air at 40 PSIg or 55 PSIa (110 inHg Absolute) 3. Pressure standard having accuracy of at least 0.001 inHg up to 38 inHg and 0.002 inHg from 38 inHg to 100 inHg. - Page 55 control the pressure at its output. Step 2. Turn on the 6500 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.
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Page 56: Pt Calibration
pressure to stabilize for a minimum of 5 minutes, select item ‘3’ using the keypad on the remote unit and then enter the value (in inHg) of the pressure generated by the Standard in item 3. This indicates the vacuum point for the calibration. If you make an error while entering data, press “CLR”. - Page 57 Note: If your Standard cannot generate 100.000 inHg abs., any pressure between 80.000 and 100.000 inHg abs. will be acceptable. If you do not wish to make a calibration adjustment, but just want to verify the accuracy of the 6500, please skip to Step 10. Step 5.
- Page 58 Model: 6500 Serial#: 84123 Full scale: Ps: 38 inHg Pt: 100 inHg Last Calibrated date: 10/10/13 _______________________________________________________________________ CALIBRATION RESULTS STATIC PRESSURE (Ps): TEST POINT AS FOUND AS LEFT DEVIATION inHg inHg inHg 1. Vacuum 1.0010 1.0000 0.0010 2. Fullscale 38.0015 38.0000 0.0015 PITOT PRESSURE (Pt):...
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Page 59: Maintenance
SECTION 7 MAINTENANCE Scheduled maintenance of the 6500 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
SECTION 8 COMMUNICATION INTERFACE The model 6500 is capable of communicating with a remotely located computer via the RS232 serial interface. Using this interface it is possible to perform all functions that are available on the front panel. 8.1 RS232 SERIAL INTERFACE The serial interface is a three wire interface using the signals RX, TX and GND. -
Page 61: Communication Syntax
For the 6500 to input a command, it must first be addressed to Listen. The command that follows must be terminated with a Line Feed <LF>. Data returned from the 6500 is terminated with a Line Feed <LF>. To get data from the 6500 the unit must be addressed to Talk. Prior to asking the 6500 to Talk, the data to be sent by the 6500 must be specified through a command. - 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 SF=0 Read the status of the Self Test last performed. SF=1 Start the Self Test. Set 'Ground' Go To 'Ground' Clears errors shown on line 4 of the display *IDN? Returns the ID string for the unit dtnnn...
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Page 64: Appendix A: Error Codes
APPENDIX A ERROR CODES All errors are displayed on line 4 of the display when the 6500 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. ERROR CODES DESCRIPTION Pressure exceeded 110 %FS on Pt output... -
Page 65: Appendix B: Specifications
APPENDIX B SPECIFICATIONS Static Output Pressure function range: 0.1 to 38 inHg resolution: 0.0001 inHg accuracy: 0.001 inHg Altitude function range: -4000 ft. to 100,000 ft. resolution: 1 foot accuracy: 1 ft. @ 0 ft. 3 ft. @ 35,000 ft. 6 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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