Fluke Lawn Mower 2635A Benutzerhandbuch

Users Manual

2-12

Perform the procedure in Figure 2-7 to configure a channel for measuring frequency. In
preparation, the instrument must be in the inactive mode (not scanning or monitoring)
and the desired channel must be selected (see Figure 2-3). To exit at any time (changes
not saved), press the 

C key.

Restrictions

Frequency Range. The frequency range for measurements is 15 Hz minimum to greater
than 1 MHz.

Maximum Input. The maximum voltage inputs are 300V ac (rms) for channels 0, 1, 11,
and 150V ac (rms) for channels 2 to 10, and 12 to 20. The frequency range for maximum
voltage inputs is 15 Hz to 100 Hz. Refer to Appendix A for derated voltage inputs for
frequencies between 100 Hz and 100 kHz.

OFF

°

F [

°

C]*

Hz

Ω

VAC
V DC

Auto
1.0000 MHz
900.00 kHz
90.000 kHz
9.0000 kHz
900.00 Hz

Typical 

Required

Selecting the Frequency Mode.  Press the 
FUNC key to access the SET FUNC (Set 
Function) menu.  Press the up/down arrow keys 
until Hz (Hertz) is displayed, then press the 
ENTER key.

Selecting the Measurement Scale.  Select a 
fixed scale or Auto (autoranging).  A fixed scale 
indicates an upper measurement limit.  For 
example, the 90.000 kHz scale measures 90 kHz 
or less.  Measurements beyond the scale limit will 
cause an OL (overload) display.  The x1 (unity or 
x 1) multiplier indicates a reading in Hz; the k 
(kilo or x 1,000) multiplier indicates a reading in 
kilohertz; the M (mega or x 1,000,000) multiplier 
indicates a reading in megahertz.

In Auto (autoranging), the instrument chooses the 
scale for the best measurement resolution.  
There are no scanning delays with frequency 
autoranging.

*  Depends on 
temperature scale.

op19f.eps