OPERATING INSTRUCTIONS WARNING
Contents
1. diode Some of those also provide temperature transistor measurement and audible continuity test function or can be used as a signal generator see table Full range overload protection and low battery voltage indication are provided they are ideal instruments for use in fields such as laboratory workshop hobby and horne applications DT83 series multimeters V_ACV DCA Q hFE BAT 4 TEMPRT Model DC RT ROOM TEMPERATURE FRONT PANEL DESCRIPTION 1 FUNCTION AND RANGE SWITCH This switch is used to select the function and desired range as well as to rurn on the instrument To extend the life of this battery the switch should be in the OFF position when the instrument is not in use 2 DISPLAY 31 2 digit 7 segment 0 5 high LCD 3 Common JACK Plug in connector for black negative test lead 4 VamA JACK plug in connector for red positive test lead for all voltage and resistance and current except 10A measurements BR IOA JACK a 94 Plug in connector for red positive test lead for 10A measurement SPECIFICATIONS Accuracies are guranteed for year 23 C 5 C less than 75 RH DC VOLTAGE RANGE RESOLUTION ACCURACY 200mV 100LV 0 25 of rdgt2D 2000mV Ss ImV 0 5 of rdgt2D 20V 10mV 0 5 of rdg 2D 200V 100mV 0 5 of rdgt2D 1000V IV 0 5 of rdgt2D OVERLOAD PROTECTION 220Vrms AC for 200mV range and 1000V DC or750Vims AC for other ranges AC VOLTAGE RANGE RESOLUTION ACCURACY 200V 100m2. OPERATING INSTRUCTIONS WARNING 1 To avoid electrical shock hazard and or damage of the instrument do not measure voltages that might exceed 500V above earth ground 2 Before the use of instrument inspect test leads connectors and probes for cracks breaks or crazes in the insulation DC VOLTAGE MEASUREMENT l connect red test lead to V QmA jack Black lead to COM jack 2 Set RANGE switch to desired DCV position If the voltage to be measured is not known beforehand set switch to the highest range and reduce it untill satisfactory reading is obtained 3 Connect test leads to device or circuit being measured 4 Tum on power of the device or circuit being measured voltag value will appear on Digital Display along with the voltage polar ty AC VOLTAGE MEASUREMENT 1 Red lead to y QmA Black lead to COM 2 RANGE switch to desired ACV position 3 Connect test leads to device or circuit being tested 4Read voltage value on Digital Display DC CURRENT MEASUREMENT 1 Red lead to V QmA Black lead to COM For measure ments between 200mA and 10A connect red lead to 10A jack with fully depressed 2 RANGE switch to desired DCA position 3 Open the circuit to be measured and connect test leads IN SE RIES with the load in which current is to be measured 4 Read current value on Digital Display RESISTANCE MEASUREMENT 1 Red lead to V QmA black lead to COM 2 RANGE sw
3. V 1 2 of rdgtlOD 750V IV 1 2 of rdgtl0D OVERLOAD PROTECTION 1000V DC or 750V rms for all ranges RESPONSE Average responding calibrated in rms of a sine wave FREQUENCY RANGE 45Hz 450Hz DC CURRENT RANGE RESOLUTION ACCURACY 200pA 100nA 1 of rdg 2D 2000pA 1pA 1 of rdg 2D 20mA 10pA t 1 of rdg 2D 200mA 100A 1 2 of rdg 2D 10A 10mA 2 of rdg 2D OVERLOAD PROTECTION 200mA 250V fuse 10A range unfused MEASURING VOLTAGE DROP 200mV RESISTANCE RANGE RESOLUTION ACCURACY 200 ohm 100m ohm 0 8 of rdg 2D 2000 ohm 1 ohm 0 8 of rdg 2D 20k ohm 10 ohm 0 8 of rdg 29 200k cia 100 ohm 0 8 of rdg 2D 2000k ohm 1k ohm 1 of rdgt 2D MAXIMUM OPEN CIRCUIT VOLTAGE 2 8V OVERLOAD PROTECTION 15 seconds maximum 220Vmms on all ranges AUDIBLE CONTINUITY RANGE DESCRIPTION Built in buzzer sounds if resistance is less then 100 ohm OVERLOAD PROTECTION 15seconds maximum220Vrms Sounds alarm TEMPERA URE K TYPE PROBE RANGE RESOLUTION ACCURACY 20 to 1370C 1C t3 2D up to 1500 3 of rdg over 1500 OVERLOAD PROTECTION 220Vrms AC
4. it to be tested If the re sistance is lower then 100ohm buzzer will sound TEST SIGNAL USE 1 RANGE switch to 7 position 2 A test signal 50Hz for M832 M837 and 1000Hz for M833 appears between V QmA and COM jacks The output voltage is approx 5V p p with 50 kohm impedance BATTERY AND FUSE REPLACEMENT Fuse rarely need replancement and blow almost always as a result of operator error If BAT appears on display it indicates that the battery should be replaced To replace battery amp Fuse 200mA 250V remove the 2 screws in the bottom of the case Simply remove the old and re place with a new one Be careful to observe polarity CAUTION Before attempting to open the case of the instrument be sure to disconnect test leads from any energized circuits to avoid shock hazard ACCESSORIES Operator s instruction manual Set of test leads Gift box K type thermoelectric couple M837 M838 M890c only 9 volt battery NEDA 1604 F22 TYPE Optional OPERATOR S INSTRUCTION MANUAL MINI DIGITAL MULTIMETER WARNING READ AND UNDERSTAND THIS MANUAL BEFORE USING THE INSTRUMENT Failure to understand and comply with the result in serious or fatal injuries and or prop ety damage MNT lM UMC Me Cee ae Oe ERE RE ee Y A GENERAL DT83 instruments are a series of compact pocket sized 3in digit multimeters for measuring DC and ac voltage DC current resis tance and
5. itch to desired Q Position 3 1f the resistance being measured is connected to a circuit tum off power and discharge all capacitors before measurement 4 Connect test leads to circuit being measured 5 Read resistance value on Digital Display DIODE MEASUREMENT 1 Red lead to V QmA Black lead to COM 2 RANGE switch to P position 3 Connect the red test lead to the anode of the diode to be mea sured and black test lead to cathode 4 The forward voltage drop in mV will be displayed If the diode is reversed figure 1 will be shown TRANSISTOR hFE MEASUREMENT 1 RANGE switch to the hFE position 2 Determine whether the transistor is NPN or PNP type and lo cate the Emitter Base and Collecter leads Insert the leads into the proper holes of the hFE Socket on the front panel 3 The meter will display the approximate hFE value at the condi tion of base current 10mA and VCE 2 8V TEMPERATURE MEASUREMENT 1 Caonnect the K type thermoelectic couple to V QmA and COM jacks 2 RANGE switch to TEMP position 3 The display will read the Temperature value C ROOM TEMPERATURE MEASUREMENT M835 can be used to measure room temperature 0C to 35C without a thermoelectric couple Simply set the RANGE switch to RT position and the current room temperature will be displayed AUDIBLE CONTINUITY TEST 1 Red lead to V QmA Black lead to COM 2 RANGE switch to 1 position 3 Connect test leads to two points of circu
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