Dmm Measurement And Setup; Ac+Dc Voltage Measurements; Frequency Measurements - RS Pro RS-9889 Manual De Instrucciones

True RMS Thermal MultiMeter / English

4.DMM Measurement and Setup

4.1.DC Voltage Measurements
Do not measure DC voltages if a motor on the circuit CAUTION: is
being switched
ON or OFF. Large voltage surges may occur that can damage the meter.
• Set the function switch to the VDC position.
• Insert the black test lead banana plug into the negative COM jack.
Insert the red test lead banana plug into the positive V jack.
• Read the voltage in the display.

4.2.AC+DC Voltage Measurements

CAUTION: Do not measure DC voltages if a motor on the circuit is
being switched ON or OFF. Large voltage surges may occur that can
damage the meter.
• Set the function switch to the VDC position.
• Insert the black test lead banana plug into the negative COM jack.
Insert the red test lead banana plug into the positive V jack.
• Press the MODE key to switch the V AC+DC Voltage functions.
• Read the AC+DC voltage in the display.
6
4.3.AC Voltage Measurements
WARNING: Risk of Electrocution. The probe tips may not be long
enough to contact the live parts inside some 240V outlets for
appliances because the contacts are recessed deep in the outlets. As
a result, the reading may show 0 volts when the outlet actually has
voltage on it. Make sure the probe tips are touching the metal contacts
inside the outlet before assuming that no voltage is present.
CAUTION: Do not measure AC voltages if a motor on the circuit is
being switched ON or OFF. Large voltage surges may occur that can
damage the meter.
• Set the function switch to the VAC position.
• Insert the black test lead banana plug into the negative COM jack.
Inser t red test lead banana plug into the positive V jack.
• Read the voltage in the main display.

4.4.Frequency Measurements

• Set the function switch to the Hz% position.
• Insert the black test lead banana plug into the negative COM jack.
Insert the red test lead banana plug into the positive V jack.
• Read the Frequency in the display.
• Press the MODE key to switch the Duty functions.
• Read the Duty in the display.
19/07/2018 Version No. 001 19/07/2018 Version No. 001
True RMS Thermal MultiMeter / English
7