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guides:homemade:rr2commutator [2013/03/20 12:51] mvdm |
guides:homemade:rr2commutator [2018/07/07 10:19] (current) |
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- | Commutator has 12 channels. For two headstages, we are only using channels 1-9; these numbers refer to the numbers on the commutator in the schematic below (NOT to numbers on the D-sub pins) | + | The commutator is a 12-channel, passive slip-ring unit from Moog (SRA-73683-12; {{:guides:homemade:moog_sra-73683.pdf|datasheet}}; there is a also a similar one called the AC6200-12 but this has more friction). |
- | {{:guides:homemade:amplipex_commutator_cable-2.jpg?800 |}} | + | For two Amplipex headstages, we are only using channels 1-9; these numbers refer to the numbers on the //commutator// in the schematic below (**NOT** to numbers on the D-sub pins): |
- | ({{:guides:homemade:amplipex_commutator_cable-1.pdf|pdf}} of above diagram)\\ | + | {{ :guides:homemade:amplipex_commutator_cable-2.jpg?800 |}} |
- | the corresponding colors on the commutator are:\\ | + | ({{:guides:homemade:amplipex_commutator_cable-1.pdf|pdf}} of above diagram, which came from Amplipex)\\ |
+ | |||
+ | The corresponding wire colors on the commutator are:\\ | ||
1 purple\\ | 1 purple\\ | ||
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Each D-sub connector is labeled either “1” (commutator data channels 1 and 2, purple and white/brown) or “2” (commutator data channels 3 and 4, blue and white). | Each D-sub connector is labeled either “1” (commutator data channels 1 and 2, purple and white/brown) or “2” (commutator data channels 3 and 4, blue and white). | ||
- | On the Omnetics/headstage side, as can be seen in the schematic, the two connectors have shared inputs. To accomplish this, 5 wires connect the relevant pins from one connector to the next. The colors for this are | + | On the Omnetics/headstage side, as can be seen in the schematic, the two connectors have shared inputs. To accomplish this, 5 wires (scavenged from Cat5e ethernet cable) connect the relevant pins from one connector to the next. The colors for this are: |
- | ^ channel number ^ color on commutator wire ^ color on “bridge” wire between connectors | + | ^ channel number ^ color on commutator wire ^ color on “bridge” wire between connectors ^ |
|5 |green |green| | |5 |green |green| | ||
|6 |brown |brown| | |6 |brown |brown| | ||
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{{:guides:homemade:amplipex_commutator1_wiring_mvdm.pdf|This}} has my original (messy) working notes on this when I was building it (MvdM). | {{:guides:homemade:amplipex_commutator1_wiring_mvdm.pdf|This}} has my original (messy) working notes on this when I was building it (MvdM). | ||
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