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Hardware
Systems
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Motorized Commutator
As part of a complete solution for research with awake, behaving subjects, TDT has developed a series of 16, 32, and 64-channel motorized commutators. Our lightweight cables, connectors, and ultra quiet motorized design minimize the torque caused by subject motion relative to a fixed cable. Sensors on the commutator continuously measure the rotational angle applied to the headstage cable, and spin the motor to compensate, eliminating the turn-induced torque at the subject’s end of the cable. Pushbuttons allow optional manual control, and an input BNC can be used to inhibit the commutator motor during critical recording periods. A banana jack provides access to external ground on the commutator. The motorized commutators are powered by a rechargable Li-Ion battery.
Part numbers:
AC16 - 16 channels
AC32 - 32 channels
AC64 - 64 channels
Technical specifications:
| Channels |
16, 32 , or 64 |
| S/N (typical) |
120 dB (20 Hz to 25 kHz) |
| RPM (approx) |
12 |
| Digital Inputs |
1 Inhibit |
| Weight (g) |
665 (AC16 and AC32), 945 (AC64) |
| Power: |
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Consumption |
35 mAh, quiescent
65 mAh, rotating |
Battery |
1500 mAh Li-ion Battery. 1000 cycles of charging,
not removable by user |
Charger |
6-9 V DC, 500 mA, center negative |
| Dimensions (in): |
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Backplate to end of connector |
4.15 |
Minimum diameter for access hole |
2.75 |
Distance between mounting holes |
7.3 |
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