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Features

LEDs

The four indicator LEDs on the front panel indicate power, the status of the Inhibit BNC input,
clockwise rotation and counterclockwise rotation.

Manual Rotational Buttons

The commutator features both clockwise and counterclockwise manual rotational buttons.
When pressed, these buttons will rotate the commutator at approximately 18 RPM. Pressing
either of these buttons also overrides the current rotational state of the commutator.

Inhibit BNC

During   critical   recording   periods   it   may   be   necessary   to   prevent   rotation   to   ensure   signal
integrity. A logical low (0) on the Inhibit BNC will prohibit any rotation initiated by either the
sensors on the commutator or the manual rotational button.

External Ground

A banana jack located on the face (GND) provides connections to common ground on the
commutator.

The external ground is optional and should only be used in cases where the subject must
occasionally make contact with a metal surface that isn't tied to the animal ground, such as a
lever press. When contact is made, a ground loop is formed that temporarily adds extra noise
to the system. Grounding this metal surface directly to the TDT hardware removes this ground
loop at the cost of raising the overall noise 

fl

oor a small amount.

A cable kit is provided to ensure cables used with the external ground are suitable for this use.
Each kit includes: one male banana plug to male banana plug pass through and one male

P

Power (~0.5 Hz 

fl

ash when on)

I

Inhibit

Counterclockwise rotation

Clockwise rotation

ACO32/ACO64 Motorized Commutators | 7

Содержание ACO32

Страница 1: ...ACO32 ACO64 Motorized Commutators Hardware Reference Updated 2022 10 31...

Страница 2: ...The information contained in this document is provided as is and is subject to being changed without notice TDT shall not be liable for errors or damages in connection with the furnishing use or perf...

Страница 3: ...l Buttons 7 Inhibit BNC 7 External Ground 8 Headstage Connections 9 Amplifier Connections 9 Fiber Optic Rotary Joint 9 Replacing the Optical Fiber ACO32 13 Change Kits 14 Replacing the Optical Fiber A...

Страница 4: ...ng a PZ5 analog amplifier or up to 256 channels or 512 channels when using ZD digital headstages and a PZ5 digital amplifier Built in electrical shielding ensures an ultra quiet environment for record...

Страница 5: ...able 1950 mAh Li ion Battery The ACO64 has a 3900 mAh battery A 6 9 V 3A center negative adapter one provided charges the device Low battery status is reported only by a decrease in rotational speed A...

Страница 6: ...ned to allow it to be disengaged for testing and troubleshooting noise issues The plate may slide out of normal position during shipping or anytime the commutator is turned upside down If the motor is...

Страница 7: ...he manual rotational button External Ground A banana jack located on the face GND provides connections to common ground on the commutator The external ground is optional and should only be used in cas...

Страница 8: ...to the source of the RF noise Headstage Connections Two or four interface receptacles are positioned on the rotary interface module The receptacles are labeled to correspond to the DB26 connectors on...

Страница 9: ...mps See ACO Technical Specifications for connector pinout Fiber Optic Rotary Joint The fiber optic rotary joint FORJ assembly is an available add on component It includes an FC FC optical fiber connec...

Страница 10: ...tes Carefully pull the FORJ away from the commutator face until the fiber is free Disconnect the fiber from the joint Replace the fiber To install the FORJ Insert metal cannula end of fiber into cente...

Страница 11: ...next to the encoder Pull the end of the fiber through the hole and insert it through the hole in the groove of the connector module Leave enough slack in the section of fiber between the encoder and...

Страница 12: ...iber optic rotary joint plate can be attached to the ACO32 plate Attach the encoder clamping plates back onto the ACO32 shaft by tightening the two screws The plate should be just below body of the AC...

Страница 13: ...the new optics to the ACO32 or ACO64 faceplate If you purchased the ACO32 or ACO64 with a FORJ and wish to remove it use the kit below to cover the opening where the FORJ was previously mounted If a...

Страница 14: ...Hex driver to remove the two screws securing the fiber optic rotary joint to the commutator face Use the hex driver to remove the two screws securing the encoder clamping plates Carefully pull the FO...

Страница 15: ...the fiber into center of gear inside the ACO64 Slowly push fiber through hole until the end appears among the wires on the other side of the ACO64 Carefully pull the wire through the slip ring Insert...

Страница 16: ...tightening the two screws The plate should be just below the body of the ACO64 and the encoder body should sit snugly inside the lip of the clamping plates Be careful not to pinch any wires or the fi...

Страница 17: ...0 dB 20 Hz to 25 kHz RPM approx 18 Digital Inputs 1 Inhibit Power Consumption ACO32 and ACO64 quiescent 35 mA ACO32 rotating 65 mA ACO64 rotating 75 mA Run time ACO32 20 hr ACO64 40 hr Power Supply AC...

Страница 18: ...ACO32 Dimensions ACO32 ACO64 Motorized Commutators 18...

Страница 19: ...les The interface receptacle diagram shows how the pins on each receptacle map to the pins on the associated DB26 connector on the face of the commutator See pinouts below for the appropriate model AC...

Страница 20: ...o the commutator see Tech Note TN0896 ACO32 and ACO64 Amplifier Connector Pinout Connectors are labeled A and B on ACO32 and A B C D on ACO64 Electrode channels below are relative to the electrode hea...

Страница 21: ...26 DNC Do Not Connect When mapping channel numbers for recording purposes the preamplifier connections must be taken into account The first channel as labeled above is relative to the amplifier bank...

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