Fluke 2620A, 2625A user manual Selecting Scan Interval, Selecting the Measurement Rate

Operating the Instrument from the Front Panel	3
Instrument Configuration

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	I			J
THESE			G
BUTTONS:			D
TO		0:00:00
CHANGE
THE
INDICATED
DIGIT:

Table 3-10. Scan Interval

Minute

J J

G	G
D	D
0:00:00	0:00:0
	0

Second

JE

G	G
D	D
0:00:0	0:00:0
0	0

Note: Go backward (from SECOND to MINUTE to HOUR) by pressing H.

Press Eat any time to accept the displayed scan interval and exit scan interval selection. Press C 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.

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