Model 80391 Sleep Fragmentation Chamber
3700 Sagamore Parkway North . Lafayette, IN 47904 USA . Phone: (765) 423-1505
10. Turning power off to the 80391 will cause the sweeper arm to reset, come back to the
home location and restart a new sweep and cycle time when power is reapplied.
11.
To remove the chamber, first turn power off. Loosen the thumbscrews on both sides
of the uprights and pull the chamber straight back from beneath the drive mechanism.
Definitions
Cycle Time:
The time from start of a sweep to start of the next sweep.
Sweep: A single sweep consists of the following:
a. The sweeper arm moves a short distance towards the nearest wall,
b. The sweeper arm moves across the chamber to the opposite wall.
c. The sweeper arm moves a short distance away from the opposite wall.
The time to complete all movements of a sweep is approximately 7.5 seconds.
CONT:
Continuous sweep of the chamber. Sweeps, as defined above, are executed one
immediately following another and take approximately 7.5 seconds per sweep. A small pause
at each end is possible and considered normal.
External Initiate:
A 2.5 mm jack is provided for initiating a sweep from a remote device. Connect
a simple push button, relay or momentary switch between the base and the tip of a suitable
plug. A momentary pulse of 20ms will initiate a single sweep of the sweeper arm. A mating
connector or cable is not provided. Contact Lafayette Instrument Co. for more information.
Event Mark:
A 50ms active low signal is generated at the start of each sweep. Connection may
be made through the same 2.5 mm jack used for an external initiate. Connect the base to
ground, and the ring to an acceptable current limited pulled up input. (30 VDC max) Contact
Lafayette Instrument for more information.
Cleaning
The chamber and cover including all attachments (sweep arm carriage, sweeper arm, guide
bar and support, feeder wall, food and water support) may be submerged in water and are
cage washer safe.
Clean the drive mechanism, base and stand by hand with cloth moistened with water, mild
soap solution, or disinfectant.
NOTE:
DO NOT submerge or spray the drive mechanism with water or other cleaning solvents.
Do not clean the drive mechanism or base in a cage washer.
4