Amprobe ACD-51HP Power-Quality-Clamp-Ons - Manual (Page 15)

ACD-51HP - ACD-56HPQ
4.3. DESCRIPTION OF ROTARY SWITCH FUNCTIONS
4.3.1. AC / DC voltage measurement
WARNING
• The maximum Voltage input is 600V. Do not attempt to take any voltage
measurements exceeding the limits indicated in this manual. Exceeding
the limits could cause electrical shock or damage to the instrument.
• The instrument won’t measure any value less than 1.5V.
Fig. 4: AC voltage measurement Fig. 5: DC voltage measurement
1. Select the “ V ” position.
2. Insert the red lead into V/ Ω jack and the black lead into the COM jack. For ease of use,
attach the rubber holster and insert a test lead (see Fig. 3).
3. Connect the test leads to the circuit under test (see Fig. 4 and Fig. 5). The instrument
automatically selects AC or DC. For AC voltage measurements the frequency value is
shown on the secondary display.
4. The “-“ symbol indicates a negative DC voltage polarity.
5. The "
O.L
" symbol indicates a voltage higher than the full-scale capability of the
instrument.
6. If the displayed value varies rapidly and reading it is difficult, press the D-H key to hold
the displayed value. To disable this function press the D-H key again.
7. If the measurement is being performed in a dark environment, press and hold the
key for 1 second to activate the backlight. It automatically turns OFF after 5 seconds.
By pressing and holding the MAX/MIN/PK key for at least 1 second, the instrument
enables the maximum (MAX), minimum (MIN), average (AVG) and peak (PK)
measurement recording mode. All of these values are continually updated even if only one
is shown. Momentary MAX/MIN/PK keystrokes will cycle the display through these
recorded values with their corresponding frequencies. To disable this function press and
hold the MAX/MIN/PK key for at least 1 second or turn the selector to any other position.
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