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Blaze ASV-2 Operating Manual

Page 17

7 Specifications

Operating Temperature Range

-10ºC to +55ºC (14ºF to 131ºF)

Storage Temperature Range

-20ºC to 80ºC (-4ºF to 176ºF)

Humidity

<85% non-condensing

Power Supply

10 to 30Vdc

Current Consumption

Approx. 125mA @ 12V (backlight highest setting), 50mA @12V (backlight
lowest setting)

Display

2.6” 320x240 IPS color LCD display
Minimum 600cd/m2 brightness
Sunlight readable with anti-glare coating
LED Backlight can be set to automatic or can be manually adjusted

Alarm Output

Open collector transistor switch to ground
Maximum rating 0.25A

Dimensions

see Blaze series dimensional drawing

Enclosure

3 1/8” (80mm) ABS, black in color, front or rear mounting. Flame retardant.

Weight

Approx. 160 grams (Instrument excluding cables)

Non-volatile memory storage

100000 write cycles

Altitude sensor ADC resolution

24 bit

Altimeter range

-1500ft to 35 000ft (-457m to 10668m)

Altitude units

ft or m

Baro Correction Range (inHg)

28.00 to 31.00 “Hg

Baro Correction Range (mB)

946 to 1050 mb

Pressure units

“Hg or mb

VSI range

+-20ft/min to +-10000ft/min

VSI units

ft/min or m/s

Airspeed ADC resolution

ASV-2 Version 1: 12 bit
ASV-2 Version 2: 24 bit
ASV-2HS: 13.5bit

Airspeed range

ASV-2 Version 1: 20mph to 250mph
ASV-2 Version 2: 20mph to 350mph
ASV-2HS (High Speed version): 20mph to 320mph

Airspeed resolution

1 mph

Measurement accuracy

+/- 2mph

Serial Port

RS232 voltage levels

Calibration interval

1 Year

As with any instrument, regular zeroing is suggested to achieve maximum performance.

8 Operating the alarms

The alarm output can be used to switch an external alarm indicator. The external alarm switch is an open collector
transistor switch to ground with a maximum rating of 0.25A DC. It is possible to wire the alarm contacts of several
Stratomaster instruments in parallel should this be desired. To avoid false activation of the alarms, the alarm function is
only active 10 seconds after the instrument has powered up.

9 Firmware Upgrading

The ASV-2 can be upgraded in the field by connecting the RS232 port to a PC and running the firmware update program.

Note that only the RS232 port can be used to upgrade the firmware.

Please see the Blaze firmware upgrading document for more information.

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Summary of Contents for ASV-2

Page 1: ...tic port is provided as well for use by high speed aircraft The ASV 2 can measure airspeed from 20mph to 250mph Version 1 20mph to 350mph Version 2 and 20mph to 320mph for the ASV 2HS High Speed version All are well suited to slower aircraft due to very good sensitivity and linearity at low air speeds Airspeed can be indicated in statute miles per hour mph kilometers per hour km h or nautical mile...

Page 2: ...in feet minute ft min or in meters second m s The ASV 2 measures airspeed from 20mph to 250mph Version 1 The ASV 2 measures airspeed from 20mph to 350mph Version 2 The ASV 2HS High Speed version measures airspeed from 20mph to 320mph Both units are well suited to slow aircraft due to very good sensitivity and linearity at low air speeds Includes a flight timer since takeoff Airspeed units can be s...

Page 3: ... the normal display screens to access the menu system Rotate anti clockwise for up down menu scrolling Rotate the rotary control during the normal display mode to adjust the local pressure Local pressure can be set in either mB or in Hg F1 Up Button Menu system Softkey button Normal Display Start Stop the flight timer Manual flight only 3 1 8 80mm enclosure Can be front or rear mounted VSI scale i...

Page 4: ...MERS setup menu 3 2 Timers display This display can be accessed by pressing the F2 Down button during the normal display mode 3 3 Maximum Airspeed display This display can be accessed by pressing the F2 Down button during the normal display mode Press the F1 Up button when the max values display is showing to reset the maximum values to the current airspeed Note The maximum airspeed is stored in n...

Page 5: ...ary control to navigate through the menu system 4 1 Exiting the menu system Press the F1 Up button to exit the menu system when the EXIT soft key is shown All changes made during navigation of the menu system will be saved in non volatile memory upon exiting The instrument will not save any changes if you remove power before exiting the menu system ...

Page 6: ...tored in the ASV 2 FLIGHT Select whether you want the ASV 2 to automatically detect a flight or whether the pilot must press the F1 Up button to start stop a flight We recommend you select automatic flight detection T O AIRSPEED This menu option is only shown if the DETECT flight mode is selected Enter the takeoff airspeed threshold that you want the flight timer to start incrementing ...

Page 7: ...lay ALT Calibrate This section allows for the calibration and fine tweaking of the altitude value Before you begin ensure that your calibrated and certified reference is set to the local pressure of 1013 25mB 29 92 Hg The ALT 5 altitude value in ft referenced to 1013 25mB 29 92 Hg is displayed in the top right hand corner of the display All calibration must be done in feet The combined adjustments...

Page 8: ...ol of the serial RS232 output message The protocol can be selected between GARMIN AT Magellan Northstar Garmin Trimble Garmin MGL Avionics and Microair UAV Please note that the baud rate is automatically adjusted according to which protocol is selected The output format is as follows The message contains the current pressure altitude with a fixed reference to 1013 25mB 29 92 inches mercury All pro...

Page 9: ... Data payload Checksum ETX STX Start of text 0x02 Address unsigned char 8bit 0x01 Message Type unsigned char 8bit 0x06 Length unsigned char 8bit Length of the data payload does not include the STX Address message type checksum or ETX 0x08 Data payload Altitude Signed Long 32 bit Altitude in feet Referenced to 1013 25mB Vertical Speed Signed Int 16 bit Vertical Speed in ft min Airspeed Unsigned Int...

Page 10: ... C2 C4 1000ft 0 0 0 0 0 0 0 0 1 0 900ft 0 0 0 0 0 0 0 1 1 0 700ft 0 0 0 0 0 0 1 1 0 0 400ft 0 0 0 0 0 0 1 0 1 1 200ft 0 0 0 0 0 1 1 0 0 1 800ft 0 0 0 0 1 1 0 0 0 1 2800ft 0 0 0 1 1 0 0 0 0 1 6800ft 0 0 1 1 0 0 0 0 0 1 14800ft 0 1 1 0 0 0 0 0 0 1 30800ft 1 1 0 0 0 0 0 0 0 1 Each altitude reporting code line must be tested for integrity of connection if at any time the aircraft connections to the tr...

Page 11: ...instrument perform a calibration flight This should be done in very calm conditions Turbulence and thermal activity will make accurate calibration impossible Many areas have ideal conditions during early mornings or late afternoons Place the instrument in ft min for ease of calibration Take your aircraft to a few thousand feet above ground and start a glide with a low power setting Take a stopwatc...

Page 12: ...or related electronics When this function is performed make sure that there is no air flow into the pitot tube as this would result in an incorrect internal calibration ASI Unit Select if you want the ASI to be displayed in mph statute miles per hour km h kilometers per hour or kts nautical miles per hour ASI Filter This function can be used to select the signal filter time constant Selections are...

Page 13: ...afe speed for landing your aircraft Vs Alarm This enables or disables Vs Alarm Vne Alarm This enables or disables the VNE alarm Cal During the factory calibration a factor has been determined and entered here that will give you accurate airspeed provided your pitot tube is not influenced by pressure effects caused by airflow around your airframe The calibration is displayed in of the reading you c...

Page 14: ...t mode The display will set the backlight to the dim setting if the ambient light is less then the threshold setting alternatively the display will set the backlight to the bright setting if the ambient light is greater then the threshold setting The ambient light received is shown as the ADC value in the top header Use this value to set the threshold value Security Setup Select this menu option i...

Page 15: ... This menu displays information about the altitude and airspeed sensors 5 Loading factory default settings Press and hold the F1 Up button and rotary control during power up to load the pre programmed factory default settings The following screen will be displayed Factory default settings can also be loaded in the Miscellaneous setup menu ...

Page 16: ...ernal flash CRC error will be displayed Reload the instruments firmware and load default settings If the error message still persists then it could possibly be an internal flash memory failure in which case the instrument will then have to be returned to the factory Max Values CRC error Load default settings to restore to factory defaults If the error message still persists then it could possibly ...

Page 17: ...ressure units Hg or mb VSI range 20ft min to 10000ft min VSI units ft min or m s Airspeed ADC resolution ASV 2 Version 1 12 bit ASV 2 Version 2 24 bit ASV 2HS 13 5bit Airspeed range ASV 2 Version 1 20mph to 250mph ASV 2 Version 2 20mph to 350mph ASV 2HS High Speed version 20mph to 320mph Airspeed resolution 1 mph Measurement accuracy 2mph Serial Port RS232 voltage levels Calibration interval 1 Yea...

Page 18: ...uild up of a pressure differential due to ram air or suction can lead to large errors of the indicated airspeed and altitude Static ports are usually mounted at a strategic position on the rear side of the aircraft fuselage for faster pressurized aircraft The ASV 2 pressure ports take 4mm ID tubing Use hose clamps to fasten the hose onto the ASV 2 pitot and static ports The ASV 2 allows you to cal...

Page 19: ...n 1 Red 8 30Vdc power via power switch circuit breaker and fuse 2 Black Ground 3 White Blue Stripe RS232 Transmit data Firmware upgrading RS232 Altitude output 4 RS232 Receive data Firmware upgrading 15 White Alarm Output Open collector Inches Millimeters Min Max Min Max A 0 248 0 278 6 30 7 06 B 0 420 0 440 10 67 11 18 C 0 182 0 194 4 62 4 93 D 0 310 0 330 7 87 8 38 Inches Millimeters A 0 157 4 B...

Page 20: ...Blaze ASV 2 Operating Manual Page 20 11 Dimensions ...

Page 21: ...nd relevant pilot s license This person has to make themselves familiar with the operation of this instrument and the effect of any possible failure or malfunction Under no circumstances does the manufacturer condone usage of this instrument for IFR flights IMPORTANT NOTICE You must make your own determination if the products sold by MGL Avionics are safe and effective for your intended applicatio...

Page 22: ...rspeed ASI and Vertical Speed Indicator VSI EMS 2 Engine Monitoring System FF 5 Fuel Computer FLIGHT 3 Primary Flight Instrument INFO 2 Information Display G Force meter UTC and Local Time Slip Indicator Outside Air Temperature OAT Battery Voltage Current and charge display Flight Timer Flight Log Stopwatch Countdown Timer and Alarm MAG 2 Magnetic Compass Indicator MAP 4 Manifold Pressure and RPM ...

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