Model 831 Manual Sound Recording 16-1
CHAPTER
16
Sound Recording
This chapter describes the digital sound recording
features associated with the optional firmware 831-SR.
This feature is not intended for recordings over extended
time periods, such as “all day” recordings. We
recommend the use of an external recorder connected to
the Model 831 AC output for these types of applications.
Sound Recording Types
There are four types of sound recordings described in this
chapter:
• Manual Sound Recording: described in "Manual Sound
Recording" on page 16-7
• Marker Initiated Sound Recordings: described in
"Marker Initiated Recording" on page 16-9
• Event Sound Recordings (Option 831-ELA required):
described in "Event Sound Recording" on page 16-14
• Measurement Sound Recordings (Option 831-ELA
required): described in "Measurement History Sound
Recording" on page 16-18:
The main difference between them is how the recordings are
initiated. With manual and marker initiated recordings, the
user must initiate each recording. With event recording, the
exceedance of a threshold sound level automatically initiates
the recording. With measurement recording, a segment at the
beginning of each measurement history record is
automatically recorded. Note that both event and
measurement sound recordings can be enabled at the same
time.
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