Back to Clinical systemsenvironmental noise
Posted on 07/17/07 20:49:29
Number of posts: 0
Posted: Mon Feb 07, 2005 2:36 am Post subject: environmental noise
Any suggestions for reducing environmental noise from patient monitors, telephones and equipment in the operating room setting. We are using an isolated/shielded plug but are still having noise problems.
Any suggestions for reducing environmental noise from patient monitors, telephones and equipment in the operating room setting. We are using an isolated/shielded plug but are still having noise problems.
Replies:
from Sasha8
Posted on 07/17/07 20:51:52
Number of posts:
Posted: Fri Feb 11, 2005 5:38 pm��� Post subject: environ noise
one way to reduce noise is to braid your electrodes. In other words, put a rubber band around all 3 electrodes at the base, then braid the electrodes until you have about 6-8 inches free for positioning the electrodes, then tie a second rubber band around this distal section. This should assist in cancelling your noise. Also it is imperative that you ensure good impedences at all 3 electrodes and also try to ensure that the impedences for all 3 (or more) electrodes are more or less the same, if they are not, then different levels of "common noise" will be substracted by the common mode rejection of the amplifiers.
one way to reduce noise is to braid your electrodes. In other words, put a rubber band around all 3 electrodes at the base, then braid the electrodes until you have about 6-8 inches free for positioning the electrodes, then tie a second rubber band around this distal section. This should assist in cancelling your noise. Also it is imperative that you ensure good impedences at all 3 electrodes and also try to ensure that the impedences for all 3 (or more) electrodes are more or less the same, if they are not, then different levels of "common noise" will be substracted by the common mode rejection of the amplifiers.
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