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Animal Activity Meter: Opto-M4

Animal Activity Meter: Opto-M4
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General Information

The Columbus Instruments Opto M4 is our latest implementation of our popular multi-channel activity monitor that supports a variety of sensor lengths and configurations (successor to the previous generation's Opto M3). Up to 32 channels are supported providing both ambulatory and total counts for each channel. Communication is via serial RS-422 using the CI Bus protocol (MDI Software). Cabling is simplified by the use of 8 channel hubs that connect to the Opto M4 with 25 pin shielded cables. Sensor cabling uses convenient RJ-45 connectors and sensor power is supplied from the Opto M4 controller over the signal cables so no external power supplies are required. Unique to this system is the ability to re-arrange sensors to change the coverage of each cage. For example, a 20 cage X axis only system can be reconfigured to measure X and Z axes in 10 cages. Additional sensors and brackets can be purchased to expand the number of cages or coverage per cage. The Opto M4 can also be integrated with other CI Bus compatible instruments to incorporates multiple measurement parameters such as feeding mass/bouts, drinking volume, VO2 and VCO2, etc. 


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Features / Specifications

Differentiates between Ambulatory movement vs. Total movement
Compact design
Rat Sensor Beam Spacing: 1" (2.54cm); available lengths are 8" (20.32cm), 12" (30.48cm) & 16" (40.64cm)
Mouse Sensor Beam Spacing: 0.5" (1.27cm); available lengths are 4" (10.16cm) & 8" (20.32cm)
MDI Software compatible
Beam Diameter: 0.125" (.32cm)
Beam Scan Rate: 160 Hz
Power Requirements: 50 Watts (110 VAC, 60 Hz, or 220 VAC, 50 Hz; factory selected)

Sensors can be re-arranged to allow for wider flexibility. A feature unique to Opto M4 system is the ability to re-arrange the sensor sets to cover more cages with fewer axes of measurement, or fewer cages with measurement in more axes per cage.

Flexibility Example 1: A system purchased for Open Field measurement in 2 cages in X, Y and Z (rearing) axes...
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Can then be reconfigured to measure general locomotor activity and rearing in 3 home cages...
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Or measure general locomotor activity only in 6 home cages.
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Flexibility Example 2: The distance between sensors is adjustable for X and XZ axis setups.
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Flexibility Example 3: We can also make custom fixed frames around any cage of your choosing. Shown below are fixed frames that we have made for a 17.5" x 17.5" (44.5 cm x 44.5 cm) Open Field cage, a typical mouse shoebox cage, and another we made for a miniaturized Open Field Cage for small mice.
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17.5" x 17.5" Open Field
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13" x 9" Mouse Cage
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9.5" x 9.5" Mouse Open Field
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Ordering Information

0160-PC Opto-M4 CI-Bus USB PC Interface with MDI Software
0160 Opto-M4 Monitor
0160-R16 Opto-M4 16" Sensor Pair with 1" Beam Spacing
0160-R12 Opto-M4 12" Sensor Pair with 1" Beam Spacing
0160-R8 Opto-M4 8" Sensor Pair with 1" Beam Spacing
0160-M8 Opto-M4 8" Sensor Pair with 1/2" Beam Spacing
0160-M4 Opto-M4 4" Sensor Pair with 1/2" Beam Spacing
0150-C1616 Opto-M4 Open Field Cage (17.5" x 17.5"), Sensor Brackets, and Baseplate (22" x 22")
0160-XZ Opto-M4 Bracket Set for 1 Station of X or XZ Configurations
0160-XYZ Opto-M4 Bracket Set for 1 Station of XY or XYZ Configurations

Opto-M4 Economical XYZ Open Field Systems (17.5" x 17.5" Arena)
0180-OFR1 Opto-M4 Economical Open Field System for 1 Animal
0180-OFR2 Opto-M4 Economical Open Field System for 2 Animals
0180-OFR4 Opto-M4 Economical Open Field System for 4 Animals
0180-OFR8 Opto-M4 Economical Open Field System for 8 Animals
0180-OFR16 Opto-M4 Economical Open Field System for 16 Animals

Opto-M4 System Monitor for XZ Axis for Typical Home Cage (CAGES NOT INCLUDED)
0180-HCXZ1 Opto-M4 System for 1 Station XZ Inclusive of Interface, Sensors, Brackets, Cables & Software
0180-HCXZ4 Opto-M4 System for 4 Station XZ Inclusive of Interface, Sensors, Brackets, Cables & Software
0180-HCXZ8 Opto-M4 System for 8 Station XZ Inclusive of Interface, Sensors, Brackets, Cables & Software
0180-HCXZ16 Opto-M4 System for 16 Station XZ Inclusive of Interface, Sensors, Brackets, Cables & Software

Opto-M4 System Monitor for X Axis-Only in Typical Home Cage (CAGES NOT INCLUDED)
0180-HCXYZ1 Opto-M4 System for 1 Station X Inclusive of Interface, Sensors, Brackets, Cables & Software
0180-HCXYZ4 Opto-M4 System for 4 Station X Inclusive of Interface, Sensors, Brackets, Cables & Software
0180-HCXYZ8 Opto-M4 System for 8 Station X Inclusive of Interface, Sensors, Brackets, Cables & Software
0180-HCXYZ16 Opto-M4 System for 16 Station X Inclusive of Interface, Sensors, Brackets, Cables & Software 


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References Cited