OPERATING INSTRUCTIONS MODEL 2703C DIGITAL MULTIMETER
Contents
1. 999 Polarity Automatic positive implied negative polarity indication Overrange OL or OL is displayed Zero Automatic Low battery indication The EI is displayed when the battery voltage drops below the operating level Measurement rate 2 5 times per second nominal Auto power off Approx 25 minutes Operating environment 0 C to 50 C at lt 70 relative humidity Storage temperature 20 C to 60 C 0 to 80 relative humidity Accuracy Stated accuracy at 23 C 5 C lt 75 relative humidity Temperature Coefficient 0 1 x specified accuracy per C C to 18 C 28 C to 50 C Altitude 6561 7 feet 2000m Power Single standard 9 volt battery NEDA 1604 JIS 006P IEC 6F22 Battery life 200 hours typical with carbon zinc Dimensions 165mm H x 78mm W x 42 5mm D Weight Approx 10 0 0z 285g including holster Accessories One set test leads one spare fuse 9V battery installed and Operating Instructions DC VOLTS Ranges 2V 20V 200V 1000V Resolution 1mV Accuracy 1 2 rdg 1 dgt Input impedance 10MQ Overload protection 1000VDC or 750VAC rms AC VOLTS Ranges 200V 750V Resolution 0 1V Accuracy 2 0 rdg 5 dgts on 200V range 2 0 rdg 10 dgts on 750V range Input impedance 10MQ Overload protection 1000VDC or 750VAC rms 50Hz 500Hz DC CURRENT Ranges 2mA 20mA 200mA 10A Resolution 1uA Accuracy 1 5 rdg 1 dgts on 2mA to 200mA2. OPERATING INSTRUCTIONS MODEL 2703C DIGITAL MULTIMETER annon ooo SAFETY INFORMATION The following safety information must be observed to ensure maximum personal safety during the operation at this meter Use the meter only as specified in this manual or the protection provided by the meter might be impaired Test the meter on a known voltage before using it to determine if hazardous voltage is present Do not use the meter if the meter or test leads look damaged or if you suspect that the meter is not operating properly Never ground yourself when taking electrical measurements Do not touch exposed metal pipes outlets fixtures etc which might be at ground potential Keep your body isolated from ground by using dry clothing rubber shoes rubber mats or any approved insulating material Turn off power to the circuit under test before cutting unsoldering or breaking the circuit Small amounts of current can be dangerous Use caution when working above 60V dc or 30V ac rms Such voltages pose a shock hazard When using the probes keep your fingers behind the finger guards on the probes Measuring voltage which exceeds the limits of the multimeter may damage the meter and expose the operator to a shock hazard Always recognize the meter voltage limits as stated on the front of the meter SPECIFICATIONS Display 31 2 digit liquid crystal display LCD with a maximum reading of 1
3. adings 4 Touch probes to the diode A forward voltage drop is about 0 6V typical for a silicon diode 5 Reverse probes If the diode is good OL is displayed If the diode is shorted 000 or another number is displayed 6 If the diode is open OL is displayed in both directions Battery Test 1 Connect the red test lead to the mA BATT 1 5V jack and the black test lead to the COM jack 2 Set the Function Range switch to the desired 1 5V battery test range 3 Connect the test leads to the 1 5Vdc battery under test Normally a good 1 5Vdc battery will read above 1 25Vdc Consult the battery manufacturer for complete battery specifications to determine actual battery life remaining and condition of battery MAINTENANCE WARNING Remove test leads before changing battery or fuse or performing any servicing Battery Replacement Power is supplied by a 9 volt battery NEDA 1604 IEC 6F22 The E appears on the LCD display when replacement is needed To replace the battery remove the three screws from the back of the meter and lift off the front case Remove the battery from case bottom Fuse Replacement If no current measurements are possible Check for a blown overload protection fuse For access to fuses remove the three screws from the back of the meter and lift off the front case Replace F1 only with the original type 0 5A 500V fast acting ceramic fuse 6 35x32mm Replace F2 only with t
4. e desired voltage type AC or DC and range If magnitude of voltage is not known set switch to the highest range and reduce until a satisfactory reading is obtained 3 Connect the test leads to the device or circuit being measured 4 For dc a sign is displayed for negative polarity positive polarity is implied Current Measurements 1 Connect the red test lead to the uA mA or 10A jack and the black test lead to the COM jack 2 Set the Function Range switch to the DC or AC ranges 3 Remove power from the circuit under test and open the normal circuit path where the measurement is to be taken Connect the meter in series with the circuit 4 Apply power and read the value from the display Resistance and Continuity Measurements 1 Set the Function Range switch to the desired resistance range or continuity position 2 Remove power from the equipment under test 3 Connect the red test lead to the VQ jack and the black test lead to the COM jack 4 Touch the probes to the test points In ohms the value indicated in the display is the measured value of resistance In continuity test the beeper sounds continuously if the resistance is less than 1000 Diode Tests 1 Connect the red test lead to the VQ jack and the black test lead to the COM jack 2 Set the Function Range switch to the position 3 Turn off power to the circuit under test External voltage across the components causes invalid re
5. he original type 10A 600V fast acting ceramic fuse 6 35x25 4mm Cleaning Wipe the case with a damp cloth and mild detergent Do not use abrasives or solvents Dirt or moisture in the terminals can affect readings ce Safety Conforms to IEC61010 1 EN61010 1 CATII 1000V CATIII 600V Class Il Pollution degree 2 Indoor use CATII Is for measurements performed on circuits directly connected to the low voltage installation CAT Ill Is for measurements performed in the building installation EMC Conforms to EN61326 The symbols used on this instrument are A Caution refer to accompanying documents fa Equipment protected throughout by Double insulation Class II Alternating current Direct current Ground
6. ranges 3 0 rdg 3 dgts on 10A range Input protection 0 5A 500V fast blow ceramic fuse on mA input 10A 600V fast blow ceramic fuse on 10A input 10A Input 10A for 60 seconds maximum followed by a 10 minute cooling period RESISTANCE Ranges 2000 2k 20k 200k 20MQ Resolution 0 10 Accuracy 1 5 rdg 4 dgts on 2kQ to 200kQ ranges 3 0 rdg 5 dgts on 20MO range Open circuit volts 0 3Vdc typical 3 0Vdc on 2000 range Overload protection 500VDC or AC rms CONTINUITY Audible indication Less than 100Q Response time 100ms Overload protection 500VDC or AC rms DIODE TEST Test current Approx 1 0mA Accuracy 3 0 rdg 3dgts Open circuit volts 3 0Vdc typical Overload protection 500VDC or AC rms BATTERY TEST Ranges 1 5V 9V Resolution 1mV 10mV Accuracy 3 5 rdg 2 dgts Loaded current 150mA typical for 1 5V range 5nA typical for 9V range Overload protection 500V DC or AC rms on 9V range 0 5A 500V fast blow ceramic fuse on 1 5V range OPERATION Before taking any measurements read the Safety Information Section Always examine the instrument for damage contamination excessive dirt grease etc and defects Examine the test leads for cracked or frayed insulation If any abnormal conditions exist do not attempt to make any measurements Voltage Measurements 1 Connect the red test lead to VQ jack and the black test lead to the COM jack 2 Set the Function Range switch to th
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