Blaze ASI-5 Operating Manual
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Blaze ASI-5 Operating Manual

Airspeed indicator
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Introduction
The ASI-5 is a 3 1/8" (80mm) sunlight readable instrument that provides a wide range airspeed indication in both digital
and analog tape formats. 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. In addition, the ASI-5 provides a flight timer since takeoff and records the maximum
airspeed reached.
Airspeed can be indicated in statute miles per hour (mph), kilometers per hour (km/h) or nautical miles per hour (kts). The
analog airspeed tape can be scaled according to the aircraft's flying speed range and ranges for Vs0, Vs1, Vfe, Vno and
Vne can be set. The ASI-5 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.
The ASI-5 can measure airspeed from 20mph to 250mph (Version 1), 20mph to 350mph (Version 2) and 20mph to
320mph for the ASI-5HS (High Speed version). All are well suited to slower aircraft due to very good sensitivity and
linearity at low air speeds.
Please note that the ASI-5 Version 2 replaces both the ASI-5 Version 1 and the ASI-5HS (High speed) unit.
Blaze ASI-5
Airspeed Indicator (ASI)
Operating Manual – English 1.06

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Summary of Contents for Blaze ASI-5

  • 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. In addition, the ASI-5 provides a flight timer since takeoff and records the maximum airspeed reached.
  • Page 2 • Large 2.6” high resolution 320x240, IPS (fully viewable in all directions), sunlight readable color LCD display • The ASI-5 measures airspeed from 20mph to 250mph (Version 1) • The ASI-5 measures airspeed from 20mph to 350mph (Version 2) •...

  • Page 3: Main Display

    Rotate the rotary control during the normal display mode to view the Max Values display. 3 Main Display The ASI-5 has 2 different display screens. The main display screen can be selected in the “ASI SETUP” menu. 3.1 Airspeed "TAPE" Display...
  • Page 4 3.4 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 ASI-5 is setup to select the manual flight option under the “TIMERS” setup menu.

  • Page 5: Exiting The Menu System

    Blaze ASI-5 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 ASI-5. FLIGHT: Select whether you want the ASI-5 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 ASI-5 Operating Manual Page 7 4.3 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 8 Blaze ASI-5 Operating Manual Page 8 ASI Filter: This function can be used to select the signal filter time constant. Selections are "NONE", “FAST” or “SLOW”. This selection influences the rate at which your ASI can change its reading. If you have an installation that suffers from strong turbulence at the pitot tube, select “slow”.

  • Page 9: Protocol Format

    Blaze ASI-5 Operating Manual Page 9 4.4 COMM Setup (Communication Setup) Serial Out: Select “ON” to enable the RS232 serial output. Unit Address: Enter the unit address. Baud Rate: Select the desired baud rate of the serial output. 4.4.1 Protocol Format...
  • Page 10 Blaze ASI-5 Operating Manual Page 10 4.4.2 Data payload Message type=7 Data Length=2 bytes Output Rate=1Hz Airspeed: Unsigned Int (16 bit), Airspeed in mph...
  • Page 11 Blaze ASI-5 Operating Manual Page 11 4.5 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 12: Sensor Info

    Blaze ASI-5 Operating Manual Page 12 Information: This menu option displays information about the unit. Default Settings: Select this menu option to reset all the settings to factory defaults. 4.6 Sensor Info This menu displays information about the altitude and airspeed sensors.

  • Page 13: Error Messages

    Blaze ASI-5 Operating Manual Page 13 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 14: Specifications

    5 seconds after the instrument has powered up. 9 Firmware Upgrading The ASI-5 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 15: Installation

    The ASI-5 pressure ports take 4mm ID tubing. Use hose clamps to fasten the hose onto the ASI-5 pitot and static ports. The ASI-5 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 16: Cable Connections

    Blaze ASI-5 Operating Manual Page 16 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 17 Blaze ASI-5 Operating Manual Page 17 11 Dimensions...

  • Page 18: 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 ASI-5 is not waterproof, serious damage could occur if the unit is exposed to water and/or spray jets.
  • Page 19 Blaze ASI-5 Operating Manual Page 19 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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