HoldPeak 760A Operation Manuals

OPERATION MANUAL
3 1/2 DIGITAL
1． INTRODUCTION
This instrument is a compact 、 battery operated、 handheld
3 1/2 digital multimeter designed for use by technicians、
servicemen 、 students 、 and hobbyists who required an
instrument that is accurate、 reliable 、 and always ready for use.
The Dual-slope-A/D converter uses C-MOS technology for
auto-zeroing 、polarity selection and over-range indication. Full
overload protection is provided. It is powered by a standard 9V
transistor radio type battery .please read this manual that
describes various useful message before using the multimeter.
2． Panel Layout
1）LCD Display: 3½ digits, LCD digit height 27mm
2）POWER Switch：Boot Up / Shutdown
3）Data-hold Switch (HOLD)：Pressing this button, the meter enters
the auto data hold mode and "HOLD" is displayed on the LCD.
4）Back Light/ Function switch indicator lamp key: Pressing the
button turns the backlight and the function switch indicator lamp
on，pressing it again turns them off.
5）Function switch indicator lamp
6) hFE Input Jack
7) Rotary Switch: use this switch to select functions and ranges
system.
8) mechanical blocking
9）V ΩInput Jack、20A Input Jack、mA Input Jack 、COM
Input Jack
3． SPECIFICATION

3.1 GENERAL CHARACTERISTICS

3.1.1 3 1/2 digit big LCD max. Indication 1999.
3.1.2 Auto-Zero & Auto-Polarity.
31.3 Over range: indication of "1" or "-1".
3.1.4 Low battery indication: " "
3.1.5 Power supply: 9V Zinc-carbon battery.
3.1.6 Safety standards :The meter is up to the standards of
IEC1010 Double Insulation , Pollution Degree 2 ,over voltage
Category Ⅲ.
3.1.7 Mechanical blocking system for terminal sockets to
prevent mistake operation
3.1.8 Temperature for guaranteed accuracy: 23℃±5℃
3.1.9 Temperature range:
Operating :0℃ to 40 ℃ Storage : -20℃ to 60 ℃
3.1.10 Humidity range:
Operating: max 75%RH Storage: max 80%RH
3.1.11 Size: 190mm×88.5mm×27.5mm
3.1.12 Weight: Approx 320g (including battery).
31.13 Accessories:
operation manual
test leads
color gift box

3.2 MEASUREMENT SPECIFICATION

Environment:
Temperature : 23℃±5℃ relative humidity : max .75%
760A
MULTIMETER
1 piece
1 pair
1 piece

3.2.1 DC voltage

Range Accuracy
200mV
2V
±(0.5% of rdg + 8digits)
20V
200V
±(1.5% of rdg + 8 digits)
1000V
Overload Protection : 1000V DC/700Vrms AC on other ranges.
Input impedance : 10MΩ on all ranges
3.2.2 AC voltage (Average sensing. calibrated to rms of sine
wave)
Range Accuracy
2V
±(1.5% of rdg + 10 digits)
20V
200V
±(2.5% of rdg +10 digits)
700V
Frequency:2V~20V at 40Hz~400Hz; 700V at 40Hz~200Hz
Overload Protection: 1000V DC/700Vrms AC on all ranges.
Input impedance : 1MΩ on 2V range; 10 MΩ on other ranges.

3.2.3 DC Current

Range Accuracy
2mA
±(0.8% of rdg +8 digits)
20mA
±(1.2% of rdg +8 digits)
200mA
±(2.0% of rdg +10 digits)
20A
Overload Protection:0.2A/250V fuse 20A/250 fuse 20A up to
10 seconds
3.2.4 AC current (Average sensing. Calibrated to rms of sine
wave)
Range Accuracy
±(1.0% of rdg + 8 digits)
2mA
±(2.0% of rdg + 8 digits)
200mA
±(3.0% of rdg + 15 digits)
20A
Frequency: 40~200Hz
Overload protection: 0.2A /250V fuse,20A/250V fuse 20A up to
10 seconds

3.2.5 Resistance

Range Accuracy
±(1.2% of rdg +15 digits)
200Ω
2kΩ
20kΩ
±(0.8% of rdg + 8 digits)
200kΩ
2MΩ
±(2.5% of rdg + 15 digits)
20MΩ
±【5.0% of （rdg -10）+ 30 digits】
200MΩ
Overload protection:250V DC/250Vrms AC for all range.

3.2.6 Capacitance

Range
±(2.5% of rdg + 25 digits)
2nF
20nF
200nF
±(2.5% of rdg + 20 digits)
2μF
20μF
Overload Protection :36V DC/36Vrms AC for all range

3.2.7 Transistor hFE test

Range Description
Display read approx .hFE value
hFE (0~1000) of transistor under test
(NPN and PNP Type )

3.2.8 Diode test and Audible Continuity Test

Range Description
Display read approximately
forward Voltage of diode.
Built-in buzzer sounds if
resistance is less than 80Ω.
Overload protection: 250V DC/250Vrms AC.

4. HOW TO USE THE MULTIMETER

PRELIMINARY NOTE:
1. If the battery is weak. a " " sign will appear on display. The
battery should be replaced
Resolution
100uV
1mV
10mV
100mV
1V
Resolution
1mV
10mV
100mV
1V
Resolution
1μA
10μA
100μA
10mA
Resolution
1μA
100μA
10mA
Resolution
0.1Ω
1Ω
10Ω
100Ω
1kΩ
10kΩ
100kΩ
Accuracy Resolution
1pF
10pF
100pF
1nF
10nF
Test Condition
Bast Current
approx 10 μ A
Vce approx 3V
Test Condition
Forward DC current
approx 1.5mA
.Reversed DC
voltage
approximately 3V
Open circuit voltage
approx 3V