Selecting Scan Interval; Selecting The Measurement Rate - Fluke 2620A User Manual

This number editing technique occurs during Configuration Mode operations whenever
you are setting a numeric value. Instances of number editing include the following:
R0 (RTD)Table 3-6
Alarms Table 3-7
Mx+B Scaling Table 3-9
Scan Interval TimeTable 3-10
Time/Date Table 3-13

Selecting Scan Interval

The scan interval is the period between starts of measurement scans. The resolution of
the scan interval is one second; the maximum scan interval is 9 hours: 99 minutes: 99
seconds. The format of the scan interval is x:xx:xx; 1:30:45 translates to 1 hour, 30
minutes and 45 seconds.
If scan interval of "0:00:00" is specified, continuous scanning will occur when the Scan
function is activated. If more than a few seconds are required to scan all defined
channels, a short scan interval (a few seconds) effectively becomes continuous scanning.
If the Monitor function is turned on when the instrument is continuously scanning, a
Monitor channel measurement is still taken between each scan.
Table 3-10 illustrates the button sequence used for setting scan interval. If necessary,
refer to "Entering and Changing Numeric Values" for a more detailed description of the
number editing technique used here.
Hour
PRESS
THESE
BUTTONS:
TO
0
CHANGE
THE
INDICATED
DIGIT:
Note: Go backward (from SECOND to MINUTE to HOUR) by pressing
Press at any time to accept the displayed scan interval and exit scan interval selection. Press
at any time to exit interval selection without storing any changes.

Selecting the Measurement Rate

The slow measurement rate provides the highest accuracy and resolution. A fast rate can
be selected, but keep in mind that fast rate provides one less digit of resolution than does
slow rate. Measurement rate selection is illustrated in Table 3-11.
Table 3-10. Scan Interval
0
:00:00 0: 0:00
Operating the Instrument from the Front Panel
Minute
0 0
0:0 :0 0:00:
0 0
.
Instrument Configuration
Second
0:00:0
0
3
3-15