Noah
Well Known Member
I'm installing aircraft-powered LEMO connectors for ANR headsets. These have shielded cable pigtails with two conductors each, as well as three small black wires. Two of these are connected to the shields at the connector end, and the third is connected to pin 2.
I also have two shielded 3-wire audio cables from my audio panel pre-purchased harness. The LEMO jacks are about 8-10 ft away from the audio panel, and the "splices" between the 2-wire LEMO cables and the 3-wire audio panel cables will be in about the middle of that run.
Pg. 18 has a schematic:
http://www.bose.com/pdf/customer_service/owners/og_headset_x.pdf
But there are a few unanswered questions:
1. Should the black wires connected to the LEMO shields be locally grounded? Although the online version doesn't say so, the paper copy I received from Bose says they should. This seems to contradict other things I have read.
2. Should I try to keep shielding around the wire splices I make between the two cable pairs? In other words, will having a few inches of exposed, non-shielded wires result in noise?
3. Should I solder the shields together at the splice or just solder the black wire to the shield of the three-wire cable from the audio panel?
Thanks for any help with this.
I also have two shielded 3-wire audio cables from my audio panel pre-purchased harness. The LEMO jacks are about 8-10 ft away from the audio panel, and the "splices" between the 2-wire LEMO cables and the 3-wire audio panel cables will be in about the middle of that run.
Pg. 18 has a schematic:
http://www.bose.com/pdf/customer_service/owners/og_headset_x.pdf
But there are a few unanswered questions:
1. Should the black wires connected to the LEMO shields be locally grounded? Although the online version doesn't say so, the paper copy I received from Bose says they should. This seems to contradict other things I have read.
2. Should I try to keep shielding around the wire splices I make between the two cable pairs? In other words, will having a few inches of exposed, non-shielded wires result in noise?
3. Should I solder the shields together at the splice or just solder the black wire to the shield of the three-wire cable from the audio panel?
Thanks for any help with this.