Urrea UD87, Руководство пользователя и гарантия

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E N G L I S H
37
Positive and Negative Duty Cycle
To measure duty cycle, set duty to either
positive or negative by using the Menu key 4.
When you measure negative duty cycle, a “ - “
symbol shows in the secondary display.
Measures positive Duty Cycle
Measures negative Duty Cycle
Positive Duty Cycle:
% duty = x 100 (above trigger point).
Negative Duty Cycle:
% duty = (1- ) x 100 (below trigger point).
Pulse Width Measurement
The pulse width measurement function
allows you to measure the amount of time
a signal is high or low within a given period.
The measured waveform must be periodic.
Resistance ( , and )
Measurements (Resistance,
Continuity and Capacitance)
CAUTION: TO AVOID DAMAGING THE
METER OR THE EQUIPMENT UNDER TEST,
REMOVE ALL POWER FROM THE CIRCUIT
AND DISCHARGE ALL HIGH-VOLTAGE
CAPACITORS BEFORE MEASURING
RESISTANCE.
The available resistance ranges are:
50 Ω, 500 Ω, 5 KΩ, 50 KΩ, 500 KΩ,
5 MΩ and 50 MΩ.
Measurement:
Resistance (default)
Menu key:
(no selection)
Connect leads:
(fig. B)
Primary display:
Ω
Secondary display:
S (conductance)
Measurement:
Continuity
Menu key:
Connect leads:
(fig. C)
Primary display:
Ω
Secondary display:
or (beeps
on short)
Measurement:
Capacitance
Menu key:
Connect leads:
(fig. D)
Primary display:
Capacitance
Secondary display:
"–"