Bedienungsanleitung Fluke 289 (Seite 62 von 88) (Englisch)

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Users Manual

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Recording Measurement Data

The Meter’s record feature collects measurement information

over a user-specified duration. This collection of information is

called a recording session. A recording session is made up of

one or more measurement records. Each record contains

measurement summary information covering the duration of the

record.

Each record contains the minimum, maximum, and average

value detected over the record’s duration. In addition to

measurement values, time stamps are also captured and saved

with each record. The time stamps consist of the record start

time, the time the maximum value was detected, the time the

minimum value was detected, and the record end time.

Some of a records data can be viewed through the Meter’s

Viewing Trend Data function. Viewing all the data that makes up

a record can only be viewed on a PC running FlukeView Forms

software.

There are two measurement record types that are captured

during a recording session: interval and event. An interval record

covers a user-specified interval. An event record has a duration

determined by the activity of the measured signal and can

interrupt an interval record. Even if an interval record is

interrupted, a record will end and a new interval record will begin

when the scheduled interval time expires.

Event records are triggered by the measured signal varying more

than an adjustable percentage of the value measured at the start

of the record. This adjustable percent is called the Event

Threshold for recording. In addition to the values and time

stamps mentioned above, an event record also stores whether

the signal was stable or unstable during the event record

duration. To be classified as stable, the measured signal’s value

must stay within the selected percentage of the start value for at

least one second. Measured signals that exceed the percentage

threshold in less than one second are classified as unstable. See

the “Setting the Event Threshold Value” section later in this

manual.

Note

For temperature measurements, the AutoHold

threshold is a percent of 100 degrees. The default

AutoHold threshold is 4% of 100 degrees, or 4 degrees

Celsius or Fahrenheit.

A record ends when one of the following occurs:

• The start of a new interval record.

• A range overload, causing the Meter to change range.

• A non-ranging overload, when in manual range or the

highest range.

• The measured value changes more than 4 % of the

measured value at the start of the record.

• The recording session terminates.

A recording session termination can be caused by one of the

following:

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