EW Avionics EW microRecorder Instructions

Table of Contents

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Introduction

The EW microRecorder logs GPS track and pressure trace in a secure .IGC file. These files can

be downloaded over USB using Windows Explorer. The file contains an encoded digital

signature. This means that any subsequent change made to the file can be detected. Hence files

produced by the microRecorder can be checked to ensure that file is unchanged. The software to

carry out this task is in the public domain and can be downloaded from our website

www.ewavionics.com

The re-chargeable batteries provide up to 100 hours of use. (Dependant on update rate). Charging

is by USB, or via a separate charger.

The microRecorder should be installed away from direct sunlight to prevent high temperatures

inside the microRecorder. If the temperature exceeds 85 deg C the microRecorder will stop

functioning until the temperature has fallen to 70 deg C, Velcro tape is ideal for the purpose of

mounting.

EW microRecorder

Instructions

Hardware V7 Firmware V6.74 and above

Unit comprises-

microRecorder

Antenna

USB download/charging lead

EW microConnector

29/4/07

Table of Contents

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Page 1 EW microConnector Introduction The EW microRecorder logs GPS track and pressure trace in a secure .IGC file. These files can be downloaded over USB using Windows Explorer. The file contains an encoded digital signature. This means that any subsequent change made to the file can be detected. Hence files produced by the microRecorder can be checked to ensure that file is unchanged.
Page 2 The antenna should be placed in clear view of the sky, on top of the coaming / glare shield in front of the instrument panel is ideal. If the signal is attenuated the microRecorder will not go into power saving and the drain on the battery life will be greatly increased.. It is important to use an EW antenna, fitted with a ferrite filter to prevent the glider radio from interfering with the microRecorder operation.
Page 3 Status LEDs On battery operation; for 30 secs after STARTUP, the red LED shows battery status- 4 or continuous Flashes indicate 80-100 % charge. 3 Flashes indicate 50-80 % charge 2 Flashes indicate 25-50 % charge. 1 Flash indicates 0-25 % charge. The status can be repeated at any time by pressing the switch.
Page 4 The microRecorder is ratified for all flights including World records. Any attempt to open the microRecorder will invalidate the file security and delete the security algorithms. The EW-User.txt will show the unit is in a compromised state. Settings The memory contains a file called EW-user.txt. This may be opened in a standard text editor such as notepad.