background image

 

15 

2.  Turn the rotary switch to the        

/

 

•)))  

 position. 

3.  Touch the test probes to the diode under test. 

Forward voltage will indicate 400 to 700mV. 

Reverse  voltage will indicate “

I

”. Shorted devices 

will indicate near 0mV. Shorted devices will 

indicate near 0mV and an open device will indicate 

I

” in both polarities. 

 

BATTERY TEST 

1.  Insert the black test lead banana plug into the 

negative 

COM

 jack and the red test lead banana 

plug into the positive 

V

 jack. 

2.  Select the 

1.5V

  or 

9V

 

BAT

  position using the 

function select switch. 

3.  Connect the red test lead to the positive side of the 

1.5V or 9V battery and the black test lead to the 

negative side of the 1.5V or 9V battery. 

4.  Read the voltage in the display. 

 

Good 

Weak 

Bad 

9V battery:   >8.2V 

7.2 to 8.2V 

<7.2V 

1.5V battery:   >1.35V  1.22 to 1.35V  <1.22V 

 

 

 

Содержание DT-912

Страница 1: ...OPERATING INSTRUTION DIGITAL MULTIMETER 10A COM V mA OFF 600 200 2000 20m 200 m 10A 1 5V 9V 200 2000 20k 200k 2000 k 600 200 20 2000 m 200 m VAC ADC BATT CAT III 600V VDC HOLD...

Страница 2: ...1...

Страница 3: ...200Vrms on 200mV range mA DC 200mA 250V fast acting fuse A DC 10A 250V fast acting fuse 30 seconds max every 15 minutes Resistance Continuity 250Vrms for 15sec max 2 USE EXTREME CAUTION when working...

Страница 4: ...djacent to another symbol terminal or operating device indicates that the operator must refer to an explanation in the Operating Instructions to avoid personal injury or damage to the meter This WARNI...

Страница 5: ...se be subjected to particularly hazardous voltages For maximum safety the meter and its test leads should not be handled when these terminals are energized This symbol indicates that a device is prote...

Страница 6: ...d Button 7 Backlight Button Note Tilt stand fuse and battery compartment are on rear of unit SYMBOLS AND ANNUNCIATORS Continuity Diode test micro amps m milli volts amps k kilo ohms ohms VDC volts dir...

Страница 7: ...digits 50 60Hz 600V 1V DC Current A DC 2000 A 1 A 1 0 reading 2 digits 20mA 10 A 200mA 100 A 1 2 reading 2 digits 10A 10mA 2 0 reading 2 digits Resistance 200 0 1 0 8 reading 2 digits 2000 1 20k 0 01...

Страница 8: ...resistance is less than approximately 30 Battery Test current 9V 6mA 1 5V 100mA Input Impedance 1M ACV Bandwidth 45Hz to 450Hz DCA voltage drop 200mV Display 3 digit 2000 count LCD 1 1 digits Overran...

Страница 9: ...ge Category II Pollution Degree 2 Category II includes local level appliance portable equipment etc with transient overvoltages less than Overvoltage Category III BATTERY INSTALLATION WARNING To avoid...

Страница 10: ...r to freeze a measurement for later reference 1 Press the DATA HOLD button to freeze the reading on the indicator The indicator HOLD will be appear in the display 2 Press the DATA HOLD button to retur...

Страница 11: ...roper measurement when connected to a circuit DC VOLTAGE MEASUREMENTS CAUTION Do not measure DC voltages if a motor on the circuit is being switched ON or OFF Large voltage surges may occur that can d...

Страница 12: ...en the outlet actually has voltage on it Make sure the probe tips are touching the metal contacts inside the outlet before assuming that no voltage is present CAUTION Do not measure AC voltages if a m...

Страница 13: ...may cause damage to the meter and or the test leads 1 Insert the black test lead banana plug into the negative COM jack 2 For current measurements up to 200mA DC set the function switch to the highest...

Страница 14: ...value RESISTANCE MEASUREMENTS WARNING To avoid electric shock disconnect power to the unit under test and discharge all capacitors before taking any resistance measurements Remove the batteries and un...

Страница 15: ...that have voltage on them 1 Set the function switch to the position 2 Insert the black lead banana plug into the negative COM jack Insert the red test lead banana plug into the positive jack 3 Touch t...

Страница 16: ...polarities BATTERY TEST 1 Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive V jack 2 Select the 1 5V or 9V BAT position using the f...

Страница 17: ...See the Battery Installation section of this manual 3 Dispose of the old batteries properly WARNING To avoid electric shock do not operate your meter until the battery door is in place and fastened se...

Страница 18: ...size and value 0 2A 250V fast blow for the 200mA range 10A 250V fast blow for the 10A range 6 Put the fuse door back in place Insert the screw and tighten it securely WARNING To avoid electric shock...

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