OPERATING INSTRUCTIONS MODEL 2706B DIGITAL MULTIMETER
Contents
1. OPERATING INSTRUCTIONS MODEL 2706B DIGITAL MULTIMETER 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 m2. aximum reading of 1999 Polarity Automatic positive implied negative polarity indication Overrange OL or OL is displayed Zero Automatic Low battery indication The f 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 150 hours typical with carbon zinc Dimensions 165mm H x78mm W x42 5mm D Weight Approx 10 0 02 285g including holster Accessories One set test leads one spare fuse 9V battery installed and Operating Instructions DC VOLTS Ranges 200mV 2000mV 20V 200V 1000V Resolution 0 1mV Accuracy 0 5 rdg 1 dgt Input impedance 10MQ Overload protection 1000VDC or 750VAC rms 600VDC AC rms 15 seconds on 200mV range AC VOLTS 50Hz 500Hz Ranges 200mV 2000mV 20V 200V 750V Resolution 0 1mV Accuracy 1 2 rdg 5 dgts on 200mV to 20V ranges 2 0 rdg 5 dgts on 200V 750V ranges Input impedance 10MQ Overload protection 1000VDC or 750VAC rms 600VDC AC r
3. measurements F2 capacitance measurements only with the original type 0 25A 500V fast acting ceramic fuse 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 fg Equipment protected throughout by Double insulation Class II Alternating current Direct current Ground
4. ms 15 seconds on 200mV range CURRENT Ranges 200uA 20mA 200mA Resolution 0 1uA DC accuracy 1 0 rdg 1 dgts AC accuracy 50Hz 500Hz 1 5 rdg 5 dgts Input protection 0 25A 500V fast blow ceramic fuse RESISTANCE Ranges 2000 2kQ 200kOQ 20MO Resolution 0 10 Accuracy 1 0 rdg 4 dgts on 2000 to 200kQ ranges 2 0 rdg 4 dgts on 20MO range Open circuit volts 0 3Vdc 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 1 5 rdg 3dgts Open circuit volts 3 0Vdc typical Overload protection 500VDC or AC rms CAPACITANCE Ranges 200uF 2mF 20mF Resolution 0 1uF Accuracy 4 rdg 10 dgts Test frequency 21Hz Test voltage lt 3 0V Input protection 0 25A 500V fast blow ceramic fuse FREQUENCY Autoranging Range 10Hz to 40kHz Resolution 1Hz Accuracy 0 1 rdg 3 dgts Sensitivity 3 5V RMS min Overload protection 500VDC or AC rms TEMPERATURE Ranges 35 C 750 C 30 F 1400 F Resolution 0 1 C 0 1 F Accuracy 1 0 rdg 1 C 0 C 400 C 3 0 rdg 3 C 35 C 0 C 400 C 750 C 1 0 rdg 2 F 4 F 750 F 3 0 rdg 6 F 30 F 4 F 750 F 1400 F Sensor type K type thermocouple Overload protection 60VDC or 30V AC rms OPERATION Before taking any measu
5. n 2 Connect the red test lead to the VQ jack and the black test lead to the O COM jack 3 Connect the test leads to the point of measurement and read the frequency from the display Temperature Measurements 1 Set the Function Range switch to the desired temperature range C F 2 Remove leads and slide the Temp switch to the right to close lead jacks 3 Plug any K type thermocouple directly into the meter to measure temperature 4 Take temperature measurement using the thermocouple probe and read the temperature from the display Temp offset adjustment The OFFSET control is set at the factory to allow for the variations found in standard thermocouples By adjusting the OFFSET control you can optimize measurement accuracy for a particular thermocouple at a particular temperature 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 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 and capacitance 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 current
6. red 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 readings 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 Capacitance Measurements 1 Set the Function Range switch to the desired F capacitance range 2 Connect the red test lead to the F jack and the black test lead to the COM jack 3 Touch the probes to the capacitor Observe polarity when measuring polarized capacitors 4 Read the capacitance directly from the display 5 Discharge the capacitor before taking capacitance measurements Frequency Measurements 1 Set the Function Range switch to the 40kHz positio
7. rements 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 MAX MIN Press MAX MIN once begins recording MIN and MAX Press MAX MIN to select current reading MIN or MAX Hold down for 2 seconds to exit MAX MIN function Backlight Press the button to activate the backlight for approximate 4 5 minutes 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 the 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 mA 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 jack and the black test lead to the Resistance and Continuity Measurements 1 Set the Function Range switch to the desi
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