Blaze ASV-2 Operating Manual

Blaze ASV-2 Operating Manual

Altimeter, airspeed (asi) and vertical speed indicator (vsi)

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Introduction
The ASV-2 is a 3 1/8" (80mm) sunlight readable encoding altimeter, airspeed and wide range vertical speed indicator.
The altimeter contains an internal high accuracy 24 bit digital altitude sensor which calculates altitude from -1500 ft up to
a maximum of 35000 ft. The ASV-2 outputs various formatted RS232 serial data protocols compatible with serial input
transponders such as that from Garmin, Magellan, Northstar, Trimble, Microair etc. The altimeter can display altitude in
feet or meters and local pressure can be set in millibars or inches of mercury
The VSI indicator can be displayed in either feet/minute (ft/min) or meters/second (m/s). The VSI can be calibrated by the
user once the instrument has been installed in the aircraft.
Airspeed is based on the pressure generated by a pitot tube system and a static 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 miles per hour (kts). The ASV-2 also provides a programmable Vs and Vne airspeed alarm output. ASI sensitivity
can be calibrated by the user to cater for errors caused by pitot tube placement.
In addition, the ASV-2 provides an encoder test function, flight timer since takeoff and records the maximum airspeed
reached. The ASV-2 provides a parallel Gillham code interface when used in conjunction with the MGL Avionics CNV-
ALT.
Please note that the ASV-2 Version 2 replaces both the ASV-2 Version 1 and the ASV-2HS (High speed) unit.
Blaze ASV-2
Altimeter, Airspeed (ASI) and Vertical
Speed Indicator (VSI)
Operating Manual – English 1.04

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Summary of Contents for Blaze ASV-2

  • Page 1 Airspeed is based on the pressure generated by a pitot tube system and a static 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).
  • Page 2 An internal high accuracy 24 bit digital altitude sensor calculates altitude from –1500 ft up to a maximum of 35000 ft (-457m to 10668m) • The ASV-2 outputs various formatted RS232 serial data protocols compatible with serial input transponders such as that from Garmin, Magellan, Northstar, Trimble, Microair etc. •...
  • Page 3: Main Display

    Blaze ASV-2 Operating Manual Page 3 2 Layout Ambient light sensor 3 1/8” (80mm) enclosure. Sunlight readable color graphic display: Can be front or rear mounted The backlight can automatically adjust to the ambient light or it can be manually...
  • Page 4 3.1 Start / Stop flight display Press the F1/Up button during the normal display mode to manually start/stop a flight. This key is only active if the ASV-2 is setup to select the manual flight option under the “TIMERS” setup menu. 3.2 Timers display This display can be accessed by pressing the F2/Down button during the normal display mode.
  • Page 5: Exiting The Menu System

    Blaze ASV-2 Operating Manual Page 5 4 Menu System Press the rotary control button during the normal display mode to enter the menu system. Use the rotary 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.
  • Page 6: Flight Timer

    Use this function to erase the flight log stored 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.
  • Page 7 Blaze ASV-2 Operating Manual Page 7 4.3 ALT Setup (Altitude Setup) Altitude Unit: Select if you want the altitude displayed in ft (feet) or m (meters). Pressure Unit: Select if you want the local pressure displayed in mb (millibars) or “Hg (inches of mercury).
  • Page 8: Cal Factor

    Blaze ASV-2 Operating Manual Page 8 Cal Factor: This is the pressure sensor offset in 0.1mB increments. Adjust your static pressure to be close to sea level pressure. The exact altitude is not important and can be up to several hundred feet. Adjust the calibration factor so the altitude readout in the top right hand corner of the display agrees with your pitot static test set.
  • Page 9 Blaze ASV-2 Operating Manual Page 9 The checksum is a simple modulo 256 sum of the binary values of the individual characters. The checksum is sent as two characters in hexadecimal format Microair UAV 9600 STX,a,=, five altitude digits right justified...
  • Page 10 RS232 output and the parallel gillham output if using a CNV-ALT converter. The ASV-2 will resume the normal output of the indicated altitude upon exiting the test function.
  • Page 11 Blaze ASV-2 Operating Manual Page 11 4.4 VSI Setup (Vertical Speed Indicator Setup) VSI Display: Select if you want the VSI to be displayed. VSI Unit: Select if you want the VSI to be displayed in "ft/min" (feet/minute) or "m/s" (meters/second).
  • Page 12 Blaze ASV-2 Operating Manual Page 12 4.5 ASI Setup (Airspeed Setup) Zero ASI Sensor: This setup allows your instrument to measure the zero airspeed reading of the airspeed sensor and set a calibration value internally for this. This is equivalent to some mechanical airspeed indicators that have an adjustment to set the needle to zero when the aircraft is not moving.
  • Page 13 Blaze ASV-2 Operating Manual Page 13 Vne Speed: (Max Exceed Speed) Enter you maximum speed you aircraft should not exceed. Vno Speed: (Max Maneuvering Speed) Enter your maximum maneuvering speed. Vfe Speed: (Max Flap Speed) Enter the maximum speed that is permissible with the flaps extended.
  • Page 14: Security Setup

    Blaze ASV-2 Operating Manual Page 14 4.6 MISC Setup (Miscellaneous Setup) Backlight: Select manual or automatic backlight control. Use the rotary control in manual mode to adjust the backlight brightness. Allow 3 seconds for the display to adjust to the ambient lighting conditions when using the automatic backlight mode.
  • Page 15: Sensor Info

    Blaze ASV-2 Operating Manual Page 15 Default Settings: Select this menu option to reset all the settings to factory defaults. 4.7 Sensor Info 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.
  • Page 16: Error Messages

    Blaze ASV-2 Operating Manual Page 16 6 Error Messages Unit settings CRC error. Load default settings to restore to factory defaults. If the error message still persists then it could possibly be a non-volatile memory failure in which case the instrument will then have to be returned to the factory.
  • Page 17: Specifications

    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.
  • Page 18: Installation

    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 calibrate the airspeed reading. This is done under the “AIRSPEED SETUP” menu item. The main reason for this is to be able to remove errors introduced due to the airflow around your aircraft which may have an effect on your pitot tube pressure.
  • Page 19: Cable Connections

    Blaze ASV-2 Operating Manual Page 19 10.2 Pressure Port Dimensions Version 1 pressure ports (Plastic) Inches Millimeters 0.248 0.278 6.30 7.06 0.420 0.440 10.67 11.18 0.182 0.194 4.62 4.93 0.310 0.330 7.87 8.38 Version 2 pressure ports (Brass) Inches Millimeters 0.157...
  • Page 20 Blaze ASV-2 Operating Manual Page 20 11 Dimensions...
  • Page 21: Warranty

    The unit should not be cleaned with any abrasive substances. The screen is very sensitive to certain cleaning materials and should only be cleaned using a clean, damp cloth. Warning: The ASV-2 is not waterproof, serious damage could occur if the unit is exposed to water and/or spray jets.
  • Page 22 Blaze ASV-2 Operating Manual Page 22 Other instruments in the Stratomaster Blaze series AHRS-2 Artificial Horizon and Magnetic Compass Indicator AHRS-4 Self contained Artificial Horizon and Magnetic Compass Indicator ALT-6 Altimeter and Vertical Speed Indicator (VSI) ALT-7 Altimeter and Vertical Speed Indicator (VSI) with a transponder compatible RS232 &...

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