Brother HD-390I Operator's Instruction Manual page 6

Professional analogue multimeter
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AC Vrms
AC Vp-p
Capacitance
Transistor hFE
Diode
Decibel
CALIBRATION
Ohms Zero Adjustor located at the right side of the panel,
adjusting the meter pointer to the Zero mark on the right side
of Ohm scale of the meter dial when the test leads are touched
together at any Ω range.
Mechanical Adjustor Screw: located right below the center of
the meter dial to set pointer to Zero mark at the left side of the
scale.
(-) Jack: Plug-in connector at the lower left on the panel for
250mA
10A
nd
2
AC 10V
Value 10(50/10)
50V
250V
1000V
rd
3
AC 10V
Value 28
50V
250V
1000V
th
C(uF)
4
(Rx1k)
1 ~ 2,000 uF
th
Ω×10
5
th
Ω×10K
6
th
×1K
6
×100
×10
×1
th
7
AC 10V
Value -20dB ~ +22dB
50V
250V
1000V
250
10(50/10)
Black Line V.A
50(50/10)
250
10(50/10)
Red Scale Line
70
70
28
Black Scale Line
Blue Line IC/IB 0-1000
Black Line LI 0~15μA/mA
Black Line LV 0~3V
Red Scale Line
4
×1
×1
×1
×1
×1
×100
×1
×2
×10
×100
x1
×1
μA×1
μA×10
μA×100
mA×1
mA×10
X1
X1+14dB
X1+28dB
X1+40dB

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