CEM DT-9560, Руководство по эксплуатации, Страница: 18 / 28

18
True RMS Autoranging Digital Multimeter
4-10.Frequency/Duty Cycle Measurements (Electronic)
1. Set the rotary function switch to the “ Hz/% ” position.
2. Press the Hz/% button to indicate “ Hz ” in the display.
3. Insert the black lead banana plug into the negative COM jack and the red test lead banana plug
into the positive Hz jack.
4. Touch the test probe tips to the circuit under test.
5. Read the frequency on the display.
6. Press the
Hz/% button again to indicate “ % ” on the display.
7. Read the % of duty cycle on the display.
4-11.Autoranging/Manual Range Selection
• When the meter is first turned on, it automatically goes into Autoranging.
• This automatically selects the best range for the measurements being made and is generally the
best mode for most measurements.
• For measurement situations requiring that a range be manually selected, perform the following:
1.Press the
RANGE key. The “ AUTO ” display indicator will turn off.
2.Press the RANGE key to step through the available ranges until you select the range you want.
RANGE
MODE
REL
Hz%
HOLD
MAX
MIN
OFF
Ω
CAP
mA
Auto Power Off
10A
mA
μ A
10A
V
FUSED
MAX
800mA
COM
CAT IV 600V
CAT III 1000V
Hz
%
Hz%
Hz%
Hz%
Hz%
mV
Hz%
True RMS Autoranging Digital Multimeter
V
VFD
Temp
°C
°F
VFD
V Ω CAP
Hz%
Temp
30 sec MAX
every 15 min