SA5041 Digital Multimeter User ’s Guide
Shijiazhuang Suin Instruments Co., Ltd 14
(1) Insert the red test lead into the ‘mV/R/D/-||-/
℃
/Hz’ terminal and the black test lead into the
COM terminal. The polarity of red test lead is ‘+’, while black test lead is ‘-‘.
(2) Press
【
】
key to measure diode. Connect red test lead with positive polarity of tested diode
and black test lead with negative polarity of tested diode.
(3) In a circuit, a good diode should still produce a forward voltage drop reading of 0.5V to 0.8V.
Note
For open circuit of diode or wrong polarity connection, the “Over” will light on.
To avoid damages to the Meter or tested device, disconnect circuit power and discharge
all the high-voltage capacitors before testing diodes.
Open circuit voltage approximate 2.8V.
To avoid harms to you, please do not attempt to input voltages higher than 60V DC or
30V AC.
2.9 Short circuit measurement
Short circuit measurement is enabled by the 200Ω circuit of resistance function, the default critical
resistance is fixed as 10Ω, and once tested value less than this reference value, the buzzer will
make a sound.
Measurement Method
(1) Insert the red test lead into the ‘mV/R/D/-||-/
℃
/Hz’ terminal and the black test lead into the
COM terminal.
(2) Press
【
】
key to measure short circuit, and make test lead parallel connected with two ends
of tested circuit. The buzzer makes a sound if resistance of two ends ≤10Ω.
(3) Reading is shown as tested load and unit is Ω.
Note:
When checking continuity, disconnect circuit power and discharge all the high-voltage
capacitors before measuring continuity. (
是否需要保留？
)
Open circuit voltage around –1.2V and selected range is 200Ω.
To avoid harms to you, please do not attempt to input voltage higher than 60V DC or
30V AC.
2.10 Temperature measurement
