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Introduction

The ALT-7 is a 3 1/8” (80mm) sunlight readable encoding altimeter and a 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 ALT-7 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.

The ALT-7 also provides a transponder compatible Serial RS232 and parallel Gillham code output and also   features a
user settable altitude bug and an encoder test function.

1 Features

Large  2.6” high resolution 320x240,  IPS  (fully  viewable  in all  directions),  sunlight readable  color LCD
display

• 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 ALT-7 outputs various formatted RS232 serial data protocols compatible with serial input 

transponders such as that from Garmin, Magellan, Northstar, Trimble, Microair etc.

• Provides a parallel Gillham code output for transponders
• Built in encoder test function
• The altimeter can display altitude in feet or meters
• Local pressure can be set in millibars or inches of mercury
• Contains a wide range VSI indicator from +/-20 ft/min to as high as +/-10000 ft/min 
• VSI units can be in feet/minute (ft/min) or in meters/second (m/s)
• User settable altitude bug with deviation band / level alarm
• Standard 3 1/8” (80mm) aircraft enclosure (can be front or rear mounted)
• The LED backlight can automatically adjust to the ambient light, or it can be manually  adjusted in the

menu system

• Rotary control plus 2 independent buttons for easy menu navigation and user input
• Wide input supply voltage range of 8 to 30V DC
• 1 year limited warranty

Blaze ALT-7

Altimeter and Vertical Speed Indicator 
with a transponder compatible serial 
RS232 & parallel Gillham code output

Operating Manual – English 1.07

Summary of Contents for Blaze ALT-7

Page 1: ...r LCD display 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 ALT 7 outputs various formatted RS232 serial data...

Page 2: ...otary Control Up Down Enter Button Press the rotary control during the normal display screens to access the menu system Rotate anti clockwise for up down menu scrolling Rotate the rotary control durin...

Page 3: ...rotary control to exit and save Press the F1 Up button during the normal altitude TAPE display to enable or disable the altitude bug The bug will be yellow when in the display screen and cyan when ei...

Page 4: ...ry 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...

Page 5: ...ltitude bug or LEVEL if you want the alarm to activate if the altitude exceeds the altitude bug ALT Calibrate This section allows for the calibration and fine tweaking of the altitude value Before you...

Page 6: ...232 message can be directly interfaced to various RS232 serial input transponders Prot Select the protocol of the serial RS232 output message The protocol can be selected between GARMIN AT Magellan No...

Page 7: ...croair UAV 9600 STX a five altitude digits right justified zero padded ETX STX a 02372 ETX Infiniteq 57600 See Infiniteq protocol format below STX 0x02 ETX 0x03 CR 0x0D Infiniteq protocol format STX A...

Page 8: ...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...

Page 9: ...alibration method After you have installed the instrument perform a calibration flight This should be done in very calm conditions Turbulence and thermal activity will make accurate calibration imposs...

Page 10: ...hen using the automatic backlight 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...

Page 11: ...s menu option to reset all the settings to factory defaults 5 Loading factory default settings Press and hold the F1 Up button and rotary control during power up to load the pre programmed factory def...

Page 12: ...ill then have to be returned to the factory Internal flash CRC error The instrument does a firmware check on the program when power is applied to the instrument If the program is corrupt in any way th...

Page 13: ...Altitude sensor ADC resolution 24 bit Altimeter range 1500ft to 35000ft 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 Pres...

Page 14: ...o a few mA It is recommended to use shielded cable for the connection between the ALT 7 and the transponder if a long cable needs to be used The shield should be connected to ground at one point only...

Page 15: ...er A1 A2 A4 B1 B2 B4 C1 C2 C4 ARC RT359A 459A 859A 14 13 15 19 17 16 21 18 20 BECKER ATC 2000 3401 16 15 14 17 19 18 22 21 20 BECKER ATC 4401 1 2 3 14 15 16 17 18 19 BENDIX TRP 2060 2061 660 4 6 8 9 1...

Page 16: ...rnal 1A fuse is recommended Connect the supply terminals to your aircrafts power supply The ALT 7 can be used on both 12V and 24V without the use of any pre regulators Ensure that the supply voltage w...

Page 17: ...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...

Page 18: ...Blaze ALT 7 Operating Manual Page 18 11 Dimensions...

Page 19: ...d 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 manuf...

Page 20: ...speed 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 Indicat...

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