PlexBright Dual LED Commutator

The PlexBright Dual LED Commutator is ideal for experiments in which the only tethered cables are as a result of the optogenetic stimulation.

It has a light-weight, low-torque, passive design that supports optogenetic experiments requiring one or two LEDs with animals as small as mice.

It is equipped with magnetic LED module attachment bases for faster interchangability – often valuable once the commutator has been fixed in place in a small enclosure.

The table below provides many of the most commonly requested specifications.

PlexBright Quote Request Forms (specific to the experimental set-up) are available for rapid quote return and include both the Starter Kit itemization and individual parts for selection. The forms are available on the Resources tab, as well as on the Documentation page under the PlexBright header.

Features PlexBright Dual
LED Commutator
PlexBright Dual LED + 16 Channel Commutator Carousel Commutator Motorized Carousel Commutator Dual LED + Fluid Swivel Commutator Remarks
Optical Channels 2 2 2 2 2 (Head-Mounted LED)
Plexon data acquisition system compatibility None
– OmniPlex® D System utilizing either a DigiAmp™ or MiniDigi™ digitizing amplifier,
– OmniPlex System utilizing an analog amplifier, or
– MAP System
– OmniPlex System utilizing a Digital Headstage Processor (DHP) – OmniPlex System utilizing a Digital Headstage Processor (DHP) – OmniPlex System utilizing a Digital Headstage Processor (DHP)
Headstage compatibility n/a 1 analog Up to 2 digital Up to 4 digital n/a
Electrical channels n/a 16 Depends on channels per headstage (up to 64 channels with any combination of 16 or 32 channel headstages) n/a
Total lines 4 25  20 40 1 fluid
LED module compatibility PlexBright Compact PlexBright Compact PlexBright Compact PlexBright Compact PlexBright Head-Mounted
LED module attachment base Magnetic Magnetic  Magnetic Magnetic 2 Pin electrical connector The newer magnetic attachment bases replace the previous screw-attachment bases.
Number of mountable LEDs 1 or 2 1 or 2  1 or 2 1 or 2 1 or 2 Mixed-mode commutators can be used for nerual recording only, not requiring the simultaneous use of LED modules.
LED control signal lines 2 pairs 2 pairs  2 pairs 2 pairs 2 pairs Using a PlexBright Series-Y BNC cable, both mounted PlexBright LED Modules can be simultaneously controlled with the same control signal as for bilateral experiments.
Maximum current per LED channel 1.0A 1.0A  1.0A 1.0A 0.3A
Actuation mechanism Passive Passive  Passive Motorized torque arm Passive A light-weight, low torque design allows for passively driven rotation even with small animals.
Input connectors from LED controller/driver 2 BNC connectors 2 BNC connectors  2 BNC connectors 2 BNC connectors 2 BNC connector tethers Input power/control signals from the PlexBright 4 Channel Optogenetic Controller or PlexBright LD-1 Single Channel LED Driver.
Output connectors to LED Two-pin socket connector Two-pin socket connector  Two-pin socket connector Two-pin socket connector Two-pin socket connector Mates with the two-pin connector on PlexBright Compact LED Modules.
Electrical channel input connector n/a Harwin connector  Harwin connector Harwin connector n/a
Commutator dimensions (W x H x D) 76.2 x 50.8 x 50.6mm
(3.0 x 2.0 x 2.5 inches)
101.6 x 114.3 x 76.2mm
(4.0 x 4.5 x 3.0 inches)
 101.6 x 114.3 x 76.2mm
(4.0 x 4.5 x 3.0 inches)
180 x 280 x 127mm
(7.1 x 11.0 x 5.0 inches)
63.5 x 53.3 x 63.5mm
(2.5 x 2.1 x 2.5 inches)
Height below mounting plate 20.3mm
(0.8 inches)
50mm
(2.0 inches)
 31mm
(1.22 inches)
203mm
(8.0 inches)
17.8mm
0.7 inches
OD below mounting plate 63.5mm diameter
(2.5 inches)
Recommended cut-out
63.5mm diameter
(2.5 inches)
Recommended cut-out
 76.2mm diameter
(3.0 inches)
Recommended cut-out
114mm diameter
(4.5 inches)
Recommended cut-out
44.5mm diameter
(1.75 inches)
Recommended cut-out
Commutator weight 0.14kg
(0.3lbs)
0.35kg
(0.8lbs)
 0.35kg
(0.8lbs)
2.2kg
(5lbs)
.0.04kg
(0.09lbs)
Accessories PlexBright Series-Y BNC Cable PlexBright Series-Y BNC Cable  PlexBright Series-Y BNC Cable  PlexBright Series-Y BNC Cable Clip onTorque Arm The PlexBright Series-Y BNC Cable enables the simultaneous operation of two PlexBright LED Modules from a single channel in which identical parameters are desired for both modules.

If you have further questions, a Plexon Sales Engineer will be happy to help.

Technical Specs and Data Sheets