Audio Volume; Activation Tone; Alert Tone - Covidien Valleylab LS10 Service Manual

Performance Characteristics

Audio Volume

The stated audio levels are at a distance of one meter. Alert tones meet the requirements
of IEC 60601-2-2.

Activation Tone

The audio levels stated below are for activation tones and alert tones at a distance of one
meter.
Volume (adjustable)
Frequency
Duration

Alert Tone

Volume
(not adjustable)
Duration
2-4
45 dBA minimum
Sealing in process – 440 Hz
Continuous while the system is activated
65 dBA minimum
Seal cycle incomplete alert – The LigaSure regrasp alert
is four tones played for 150 ms each with no break be-
tween tones. The order and frequency of the tones is
784 Hz, 587 Hz, 784 Hz, 587 Hz
High, low, high, low
Seal cycle complete tone – Two tones played for175 ms
each at 985 Hz with a 175 ms break between the tones
System error tone – Three 200 ms tones separated by
300 ms for each error/system-alert event
Valleylab LS10, LS Series Single Channel Vessel Sealing Generator Service Manual