STRATOMASTER MGL Avionics, Instruments & EFIS

(Obsolete) PFS Extreme

  • This product is obsolete. It is replaced by the "VELOCITY" range or by the "XTreme" EFIS.
  • The Stratomaster Extreme is a glass cockpit primary flight and EMS system for use in light aircraft.
  • The Extreme is designed specifically for outdoor use in aircraft with open cockpits. Able to give excellent viewing quality in poor light conditions under low and high temperatures, the Stratomaster Extreme is the most complete and compact light aircraft instrumentation package available on the planet today.
  • Providing a multichannel EMS as standard, the Extreme gives you the ability to keep a close watch on your engine and to optimise your engine performance.
  • The EMS is highly configurable in true Stratomaster fashion and is therefore suitable for a large range of engines from small two-stokes to four cylinder four strokes. Rotax engines are of course usable from the 447 to the 914 but the EMS is not limited to just Rotax engines - connect just about anything you like, from VW to Jabiru to 2SI.
  • The highly configurable Extreme is the complete solution to integrating primary flight information displays with comprehensive engine monitoring.
  • Suitable for harsch operating conditions it is also used on many aircraft with limited available panel space.
  • Ask for a Catalog/Price list


  • The Stratomaster EXTREME is your answer to complete engine management and primary instruments in light aircraft. .
  • The EXTREME provides a continuous display of all your important engine parameters (both graphically and numerically) to allow you to monitor and optimise engine performance at a glance.
  • The back-lit display is of the highest quality ensuring that it is always clearly visible in both poorly lit and direct sunlight conditions.
  • No matter what your engine, the Stratomaster E2 can be configured to display and monitor the parameters you are interested in.
  • The EXTREME helps you out by letting you concentrate on flying while it does the job of monitoring the engine, alerting you to any over/under limit conditions with an audible alarm and/or flashing alarm lamp.
  • All alarm conditions are under your control allowing you to set them according to your specific needs.
  • The EXTREME interfaces to your engine via a single 3-wire cable to a separate RDAC (Remote Data Acquisition Computer) which is mounted right at the engine.
  • All temperature, pressure and fuel probes connect directly into the RDAC IV ensuring cable lengths are kept to a minimum and greatly reducing installation time.
  • No more pulling your cockpit apart to introduce a new temperature probe to your instrument cluster - Simply connect the probe to the RDAC and reconfigure the E2 to display it.
  • Quick selects allow fast and easy setup of the unit for various popular engine types.
  • Engines supported range from small two strokes like a Rotax 447 or Rotax 503 to the more powerful Rotax 582, Simonini engines, the 2Si range of engine, and of course the many four strokes from HKS, Rotax, Geo Metro, VW, Jabiru and many more.
  • To assist you in determining the many functional features of this excellent instrument, download the user manual: Extreme.pdf
  • Ask for a Catalog/Price list


  • Dimensions: 202x92 mm. Mounting depth 95mm (including connectors and wiring). Panel cutout 196x75 mm.
  • Weight 575 grams plus RDAC V-D 175 grams.
  • Altitude to 40 000 ft (12 195 m) calibrated, 1ft dynamic resolution
  • Airspeed ASI or TAS
  • Stopwatch
  • Glide and climb ratio to 1/99
  • QNH 960 to 1 060 mb (28.3 - 31.3 Inch of Hg)
  • QNE 1013 mb quick select (29.9 Inches of Hg)
  • Time of day, Date for flight log entries
  • Air time since take-off (or lesson time)
  • Ambient temperature using external sensor
  • Fuel level using flow sender or optional level sender
  • Fuel flow using optional flow sender
  • Current range estimate (range at current speed and fuel burn)
  • Fuel bingo estimate (time until tank empty)
  • Air distance made good
  • Voltage. Supply to unit. Usually 12V battery.
  • VSI +/- 9 990 ft/minute (50.7 meters per second) range with logarithmic analogue display
  • Vario output for glider or motor glider use
  • Flight log (or lesson log) storing up to 240 entries
  • Hobbs meter, presetable to current engine time
  • Density altimeter
  • Barometer for ambient pressure
  • Aircraft registration number display
  • Maintenance timer
  • Warnings for engine temperature, speed high, speed low, maximum altitude and low fuel level
  • Alarm contact output to switch a warning lamp
  • Audio alarm output to drive a panel speaker or low level output for alarm tone injection into a suitably equipped headset or intercom system.
  • Instructor modes
  • Master and slave modes for dual instrument setup
  • Measuring take-off run to 50 ft (15.24 m) above ground level
  • Air talk link for connection to:
  • PC’s and Laptops using optional cable
  • Stratomaster Extreme secondary instrument
  • Key ring flight log download device


MGL Stratomaster RDAC

  • RDAC = Remote Data Aquisition Computer)
  • Some MGL Avionics instruments (E2, Extreme, ULTRA, ENIGMA) use a remote data acquisition module for engine data acquisition.
  • This architecture makes the installation easy, since there is no need to extend sender cablezs all the way to the cockpit.
  • The RDAC is installed close to the engine, and connects to the display system with a shielded two wires cable.
  • The E2 and EXTREME use a RDCA V_D:
    RDAC V_D 4 CHT/EGT channels, no manifold pressure sender
  • Download the installation manual RDAC V_D: Install manual RDAC_V (.PDF)

  • The RDAC is supplied with a 3 meters cable.
  • Four channel thermocouple amplifier, high resolution chopper stabilized system with full cold junction compensation and bow voltage correction to laboratory standards.
  • The thermocouple inputs can accept K-type or J-type thermocouples.
  • Oil and Water temperature NTC input compatible with most oil temperature senders and the MGL water temperature sender.
  • Also accepts MGL precision semiconductor senders for water and oil temperature.
  • optional LM335 sensor based temperature sender to indicate ice warning. The sender is normally fitted to the outside of a carburetor, in close proximity to the throttle slider or valve or in the intake airflow.
  • Oil pressure sender input. 50 to 1000 ohms. Accepts most commercial oil pressure senders including those from VDO. Rotax uses a 200 ohm sender
  • TWO Fuel level sender input with extensive calibration functions provided to allow direct readout of fuel quantity corrected for tank shape and sender tolerances.
  • Fuel flow sender input. Can be used with most commercial liquid flow senders. Flow measurement without sender on injection systems by measurement of injector opening time (i.e. Hirth engines).
  • Universal rev counter input. Can be used on a wide variety of engines using a variety of interface methods.
  • Ref: MG_RDACV_D 4 CHT/EGT channels, no manifold pressure sender
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