According to the case notes and communications with the response center engineer (rce), a technical inop did occur at the bedside, but not known for what specifically, however, at that time, it was noted that there was no spo2 value (? instead) and no trends.A review of the piic ix logs do indicate that a technical alarm occurred around the time of the expected desat alarm, however, the technical inop "no spo2 sensor" is not audited in the ix logs at this time.The field service engineer (fse) went on-site and performed testing on both the bedside and central station, and found them functioning/alarming per specifications.Based on the information that an inop tone was heard at the bedside, a "?" value was noted at the bedside, and the ix logs indicate the occurrence of a technical inop around the time of the reported incident, no device malfunction is supported and the behavior is consistent with receiving an active technical inop for spo2 which would prevent the device from alarming for a desat condition.No device malfunction occurred.
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