Today's Message Index:
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1. 05:09 AM - Re: Modifying Seat Heater Wiring (Eric M. Jones)
2. 07:43 AM - transponder connections, grounding and RF interference (messydeer)
Message 1
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| Subject: | Re: Modifying Seat Heater Wiring |
I haven't seen the seat heaters, but a question came to me:
Is the back side of the seat heater insulated and reflective? If not, why not?
It would use half the power.
Eh?
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Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones@charter.net
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=339664#339664
Message 2
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| Subject: | transponder connections, grounding and RF interference |
I've got a TDR-950 and now have the components ready for connecting it to my MGL
Enigma.
Connections
I have a couple questions about where the wires connect. Bob has the pinout table here, http://www.aeroelectric.com/Installation_Data/TDR950-950L.pdf . Number 2 says 'ext suppr'. I read on VAF, http://www.vansairforce.com/community/showthread.php?t=3414, this is for DME, which I don't have so would leave open.
Number 3 is for D4. The Enigma installation manual says, 'If your transponder does
not support signals D4 and D2, leave them unconnected.' The transponder doesn't
have D2, so do I connect D4 or not?
Number 13 is for a 14v dimmer. I'm running a 14V system. On the front of the transponder
there is an adjustable knob that says 'dim' and has a curved arrow around
the knob. Would 13 go to power? If so, seems I could jump this into number
14, which says 14 volts DC in.
Number 15 says 'remote I/D'. The same thread on VAF said to ground this. Is that
right?
Grounding
The pinout table says number 1 goes to ground and MGL says also to ground the xpdr
to the encoder connection of the EFIS. The EFIS is also grounded separately
from its main connector to the ground bus. Is this the way to do it? I'm concerned
about ground loops. I've attached a schematic of what I think they are
suggesting, showing just the ground wires.
RF interference
I've also got a ferrite bead cylinder or two from MGL. Would I loop all the wires
from the transponder through one of these, close to the back of the xpdr?
Thanks :-)
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Dan
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=339677#339677
Attachments:
http://forums.matronics.com//files/transponder_ground_schematic_726.jpg
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