HoldPeak HP-760C Operation Manual

HP-760C
OPERATION MANUAL
3 1/2 DIGITAL
1． INTRODUCTION
This instrument is a compact 、 battery operated、 handheld 3
1/2 digital multi meter designed for use
servicemen 、 students 、
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 multi meter.
2． Panel Layout
1）LCD Display
2）POWER Switch：Boot Up / Shut down
3）Back Light /Function switch indicator lamp key: Pressing the
button turns the backlight and the function switch indicator lamp
on，pressing it again turns they off.
4）CX+、CX- Input Jack
5）LX+、LX- Input Jack
6）Function switch indicator lamp
7) hFE Input Jack
8) Rotary Switch: use this switch to select functions and ranges
system.
9) mechanical blocking
10） V Ω Input 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.
3.1.3 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 Auto power off: Appox.30 minutes after power on, the meter
automatically enter to power off mode. Push the "POWER" then
push down it, power on again.
3.1.7 Safety standards :The meter is up to the standards of
IEC1010 Double Insulation , Pollution Degree 2 ,over voltage
Category Ⅲ.
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).
3.1.13 Accessories:
operation manual
test leads
temperature test probe
packing box
3.2 MEASUREMENT SPECIFICATION
Environment :
Temperature : 23℃±5℃ relative humidity : max .75%
3.2.1 DC voltage
Range Accuracy
200mV
±(0.5% of rdg + 8digits)
20V
±(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. calibreated to rms
MULTIMETER
technicians 、
by
and hobbyists who required an
"
1 piece
1 pair
1 pair
1 piece
Resolution
100μV
10mV
1V
of sine wave)
Range Accuracy
2V
±(1.5% of rdg + 10 digits)
20V
±(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 : 10 MΩ on all 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
±(1.8% 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
±(1.2% of rdg +15 digits)
200Ω
2kΩ
±(0.8% of rdg + 8 digits)
20kΩ
200kΩ
±(2.5% of rdg + 15 digits)
20MΩ
Overload protection:250V DC/250Vrms AC for all range.
3.2.6 Capacitance
Range
±(2.5% of rdg + 25 digits)
20nF
200nF
±(2.5% of rdg + 20 digits)
2μF
±(2.5% of rdg + 25 digits)
0~100μF
200μF
±(6.0% of rdg + 55 digits)
100~200μF
Overload Protection :36V DC/36Vrms AC for all range
3.2.7 Inductance
Range
20mH
200mH
±(2.5% of rdg + 25 digits)
2H
20H
3.2.8 Frequency
Range
±(3.0% of rdg + 15 digits)
200kHz
Calibrated to the signal of square wave
Sensitivity: 1.0V
Overload protection: 250V DC/250Vrms AC (up to 15 seconds)
3.2.9 Temperature
Range Accuracy
-20～150℃
℃
150～300℃
300～1000℃
K TYPE NiCr-NiSi probe
3.2.10 Transistor hFE test
Range Description
Display read approx .hFE value
hFE (0~1000) of transistor under test
(NPN and PNP Type )
3.2.11 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 "
battery should be replaced
2. The mark or sign" "near to the test lead jacks is for warning
that the input voltage or current should not exceed the indicated
Resolution
1mV
10mV
1V
Resolution
10μA
100μA
Resolution
100μA
Accuracy Resolution
Accuracy
Resolution
Accuracy Resolution
100μH
Accuracy Resolution
Resolution
3℃+2
3.0% of rdg+2 digits
3.5% of rdg+10 digits
Test Condition
Bast
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
" sign will appear on display. The
1μA
10mA
1μA
10mA
0.1Ω
1Ω
10Ω
100Ω
10kΩ
10pF
100pF
1nF
100nF
10μH
1mH
10mH
100Hz
1℃
1℃
1℃
Current