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output. Maximum permitted current draw from these terminals is 0.5A. Under no 
circumstances connect transceivers or lighting to these terminals.
Recommended backup battery types are 12V sealed lead acid with capacities ranging 
from 1Ah to 2.5Ah.
In case of a dual panel installation, it is permissible to connect both panels to a single 
backup battery.
Please note that inline fuses or over-current sensing interrupters must be installed as 
shown. It is wise to install these in such as way that it is possible to replace fuses in flight 
or reset a circuit breaker.

This image shows a photo of a typical, principle installation wiring. Note the use of ferrite 
beads on ALL wires leaving the instrument. Four ferrite beads are included with each 
instrument as standard. These ferrite beads are vital to eliminate any RF interfering signals 
that may cause radio interference particularly on VHF radios.
Beads may or may not be required, this will depend highly on installation and routing of 
wiring in the aircraft. As a rule, follow these guidelines:

Antenna cables must never be routed alongside other wiring.

Place antennas as far away from any digital instrumentation as possible.

Avoid ground loops which can act as powerful, short range transmitting aerials for 
weak signals. Ensure that your aerial has a good and correct ground plane.

Never share power or ground cables between RF equipment and digital equipment. 
Each requires their own routing of power to the battery.

Notes on the use of ferrite beads:

Summary of Contents for Stratomaster Enigma

Page 1: ...Stratomaster Enigma Preliminary installation documentation ...

Page 2: ...another for the backup battery In flight both switches would be on allowing the charging of the backup battery Preflight check would involve switching main power on then battery power on Check of battery power would involve switching main power off and verifying that Enigma continues to operate Voltage on the backup battery should be measured by means of the backup voltage readouts which can be pl...

Page 3: ...ferrite beads on ALL wires leaving the instrument Four ferrite beads are included with each instrument as standard These ferrite beads are vital to eliminate any RF interfering signals that may cause radio interference particularly on VHF radios Beads may or may not be required this will depend highly on installation and routing of wiring in the aircraft As a rule follow these guidelines Antenna c...

Page 4: ...nt on the contents of the display and may sound like an angry grrrrrr If you have radio noise change the screens to see if the noise pattern changes as well If it does start identifying which cables are used to transmit the noise to your radio Enigma itself does not transmit a significant signal due to strict EMI design techniques however small signals may readily leak and use any attached wires a...

Page 5: ...AOA port types Photo of an experimental single port AOA probe mounted next to the pitot tube on the wing strut of our Jora aircraft This probe made from wood works very well indeed ...

Page 6: ... panel This also aids the pilot as the image is closer to the windscreen avoiding eye fatigue while constantly changing view from the panel to outside the aircraft If this is not possible or can only be done in a limited way consider tilting the instrument up slightly in order to aim the picture towards the pilot Idealized view of a sloped panel to optimize viewing quality This image overdoes this...

Page 7: ...ion suitable for connection to a mode C transponder Connections using the standard code identifiers are shown here If your transponder does not support signals D4 and D2 leave them unconnected At least one of the ground wires should be connected to the corresponding ground terminal of your transponder ...

Page 8: ...Transponder connections for popular models ...

Page 9: ...Transponder interface wiring for Microair T2000 ignore pin numbers on DB15 connector Also line Encoder power is not used with Enigma ...

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