Frequency And Duty Cycle Measurements; Only) - Gossen MetraWatt METRAHIT PM TECH Operating Instructions Manual

7.1.4 Frequency and Duty Cycle Measurements

(METRAHIT PM XTRA / PM TUNE / E
➭ Set the rotary switch to MHz or %.
➭ Connect the measurement cables as shown.
Make sure that a current measuring range ("A") has not been
activated when the multimeter is connected for frequency or
duty cycle measurement!
!
Attention!
The applied signal voltage may not exceed 5 V.
Frequency Measurement, MHz
A 5 V signal with a frequency of up to 1 MHz is measured and
displayed using MHz as a unit of measure. Pulse frequency
demonstrates the reciprocal value of pulse period.
Duty Cycle Measurement, t /t
E P
The ratio of pulse duration to pulse period is measured with
periodic square-wave signals and displayed as a percentage.
pulse duration (t
duty cycle (%) =
pulse period (t
Note
The applied frequency must remain constant during duty
cycle measurement.
Gossen Metrawatt GmbH

only)

XTRA
)
E
 100
)
P
V/Hz, , Temperature,
MHz
1.0323
%
U
002.00
t
t
E
t
P
%
Pulse Time Quantities
f pulse frequency = 1/t
P P
t pulse duration
E
t pulse period
P
t – t interpulse period
P E
t /t pulse or duty cycle
E P

V
COM
Temp
and A/Hz Measurements
MHz
f
P
MHz
FUNC
ENTER
%
t /t
E P
Measuring Ranges:
fp pulse frequency range
Hz t /t
E P
15 Hz ... 1 kHz 2 ... 98 %
... 10 kHz 5 ... 95 %
... 50kHz 10 ... 90 %
!
Max. 5 V
30