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General Tools and Instruments DMM51FSG User Manual

Page 5

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B-5

RESISTANCE

Range

Resolution

Accuracy

DMM51FSG

200

0.1

± (0.8% rdg + 3 digits)

2K

1

20K

10

200K

100

± (0.8% rdg + 1 digit)

2M

1K

20M

10K

±(1% rdg + 2 digits)

200M

100K

± [ 5% (rdg-10 + 10 digits) ]

VOLTAGE AT OPEN CIRCUIT:

≤700mV (200MΩ range, open circuit voltage
around 3V).

OVERLOAD PROTECTION: All ranges 250VDC or AC RMS.
CAUTION: At 200M

Ω range, as test lead is short circuit the LCD display 10 digits

is normal, deduct the 10 digits from the measured reading during
measuring.

B-6

DIODE TEST AND CONTINUITY BEEPER

Range

Comment

Measuring Condition

Display diode forward-

Forward DC current abt 1mA

voltage near value,

Backward DC voltage abt 2.8V

Unit “mV”
Beeper sounds if

Voltage at open circuit

Continuity Resistance

abt 2.8V

≤70Ω. Display near value
Unit “

Ω”

OVERLOAD PROTECTION: 250V DC or AC RMS.

B-7

TRANSISTOR hFE TEST
Range

Comment

Measuring Condition

hFE

Can measure NPN

Basic polarity current abt

or PNP transistor

10

␮A,Vce abt 2.8V

hFE Range: 0-1000

DMM51FSG Manual FINAL-091908:Layout 1 9/19/08 4:03 PM Page 5