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Design Considerations: Interference from other Devices
The WUH4000 is validated to be compatible with other devices that are commonly found in an
operating environment, in accordance with IEC 60601-1-2. In that testing, the WUH4000 needed
to maintain the following Essential Performance to ensure that its performance was adequate
when the System was exposed to other electronic equipment. WUH4000 Essential Performance
requires that a viewable image shown on a secondary monitor via a WUH4000 pair be consistent
with the following criteria:
1. A viewable image is generated
2. There is no fl ickering of the image
3. There is no clipping of any edges
4. Brightness and detail of image remains consistent across the whole image
These criteria ensure that no resultant video degradation could be judged to be clinically signifi -
cant.
For best results, verify the following:
The TX and RX are facing each other.
The TX and RX are no more than 10 meters apart.
The TX and RX are between 6-10 ft above the fl oor.
The TX and RX are not in a confi ned location.
Noninterference Distances
The following minimum distances have been tested to demonstrate noninterference between
the listed devices and the WUH4000. If the WUH4000 is thought to be causing or receiving inter-
ference with the following devices, then move the devices away from each other, maintaining at
least the following separations:
Equipment
Transmitter
Receiver
Electrocautery
> 610 mm, (24 inches)
> 305 mm, (12 inches)
RFID
> 10 mm, (.39 inches)
> 10 mm, (.39 inches)
2.4GHz Wireless
> 152 mm, (6 inches)
> 152 mm, (6 inches)
5.8 GHz Wireless
> 152 mm, (6 inches)
> 152 mm, (6 inches)
Cell Phone
> 10 mm, (.39 inches)
> 10 mm, (.39 inches)
Bluetooth
> 10 mm, (.39 inches)
> 10 mm, (.39 inches)
The WUH4000 is not intended to be used in the vicinity of diathermy equipment. If diather-
my equipment is operated around the WUH4000 and interference is suspected, turn off the
WUH4000 Transmitter and Receiver.
Maintenance of Quality of Service WUH4000
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