Measuring Frequency / Duty Cycle; Measuring Temperature - ADInstruments AD71B Manual De Usuario

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When capacitance measurement has been completed, disconnect the connection
z
between the testing leads and the circuit under test and remove the test leads away
from the input terminals of the Meter.

Measuring Frequency / Duty Cycle

G.
Black
Red
Figure 3-7. Frequency / Duty Cycle Measurement
Warning
To avoid harms to you, please do not attempt to input voltage higher than
30V rms.
To measure frequency and duty cycle, connect the Meter as Figure 3-7 and do the
following:
1. Insert the red test lead into the Hz terminal and the black test lead into the COM
terminal.
2. Set the rotary switch to
select the Hz measurement mode for frequency measurement or % for duty cycle
measurement.
The BLUE button cycles among
3. Connect the test leads across with the object being measured.
The measured value shows on the primary display.
Note
z The requirement of Input amplitude "a" is as follows:
When 10Hz~40MHz: 200 mV≤a≤30Vrms;
40MHz:
z When Hz measurement has been completed, disconnect the connection between
the testing leads and the circuit under test and remove the test leads away from
the input terminals.
Measuring Temperature (UT71B only)
H.
©Copyright Abacanto Digital SA.
(UT71B) and press BLUE button to
(UT71A) or
, frequency and duty cycle.
Un-specified
Manual de usuario AD71B
AD Instruments
59