OPERATING INSTRUCTIONS MODEL 2709B DIGITAL MULTIMETER
Contents
1. lt 3 Input impedance 660mV gt 100MQ 6 6V 10MQ 66V 750V 9 1MO Overload protection 1000VDC or 750VAC rms CURRENT Ranges 660uA 6600UA 66mA 400mA 10A Resolution 0 1uA DC accuracy 1 5 rdg 2 dgts on 660UA to 400mA ranges 3 0 rdg 3 dgts on 10A range AC accuracy TRUE RMS 50Hz 500Hz 2 0 rdg 10 dgts on 660uUA to 400mA ranges 3 5 rdg 10 dgts on 10A range Crest factor lt 3 Voltage burden 0 4V on 660uA 66mA 10A ranges 2V on 6600uA 400mA ranges Input protection 0 5A 500V fast blow ceramic fuse 10A 600V fast blow ceramic fuse 10A Input 10A for 60 seconds maximum followed by a 10 minute cooling period RESISTANCE Ranges 6600 6 6kQ 66kQ 660kQ 6 6MQ 66MQ Resolution 0 10 Accuracy 1 2 rdg 5dgts on 6600 to 660kO ranges 2 0 rdg 5 dgt on 6 6MO range 3 5 rdg 5 dgt on 66MO range Open circuit volts 0 45Vdc 1 2Vdc on 6600 range Overload protection 500VDC or AC rms CAPACITANCE Ranges 6 6nF 66nF 660nF 6 6uF 66uF 660uF 6 6mF 66mF Resolution 1PF Accuracy 3 0 rdg 30 dgts on 6 6nF range 3 0 rdg 5 dgts on 66nF to 660uF ranges 5 0 rdg 20 dgts on 6 6mF 66mF ranges Overload protection 500VDC or AC rms FREQUENCY Ranges 660Hz 6 6k 66k 660k 6 6M 66MHz Resolution 0 1Hz Accuracy 0 1 rdg 3 dgts Sensitivity 10Hz 6 6MHz gt 2 5V rms 6 6MHz 66MHz gt 2 5V rms lt 5V rms Minimum pulse width gt 25ns Duty c2. between the stored reference value and the present reading Press A button again to exit the relative mode Backlight Press the 4 button to activate the backlight for approximately 60 second Manually Selecting Range The meter also has a manual range mode In manual range you select and lock the meter in a range To manually select a range Press RANGE button to hold the selected range Subsequently pressing the RANGE button will select each range in sequence from the lowest to highest range Hold the button for 2 seconds to return to the Autorange Mode 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 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 Measurements 1 S
3. OPERATING INSTRUCTIONS MODEL 2709B DIGITAL MULTIMETER RANGE HOLD A MAX MIN gt em TRUE RMS AUTO POWER OFF 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 3 digit liquid crystal displ
4. Observe polarity when measuring polarized capacitors 4 Read the capacitance directly from the display 5 Discharge the capacitor before taking capacitance measurements 6 When the capacitor to be tested is connected if dlISC symbol indicates on LCD it means there is voltage existing in the tested capacitor and need to be discharged before testing 7 For maximum accuracy step to the desired range in manual ranging then press the Relative A button to zero out test lead capacitance before the measurement Frequency Measurements 1 Set the Function Range switch to the Hz position 2 Connect the red test lead to the VQ jack and the black test lead to the COM jack 3 Connect the test leads to the point of measurement and read the frequency from the display Auto Power Off 1 Auto power off approx 30 minutes 2 After auto power off press any button to restart the meter and the reading of measurement will be maintained in the display Cancellation of Auto Power Off Feature Press and hold the RANGE button while rotating function switch from off to any position to turn the meter on The auto power off feature is disabled Note APO annunciator is missing from the LCD 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 I appears on the LCD display w
5. ay LCD with a maximum reading of 6600 Polarity Automatic positive implied negative polarity indication Overrange OL or OL is displayed Zero Automatic Low battery indication The E 1 is displayed when the battery voltage drops below the operating level Measurement rate 2 times per second nominal Auto power off Approx 30 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 oz 285g including holster Accessories One set test leads one spare fuse 9V battery installed and Operating Instructions DC VOLTS Ranges 660mV 6 6V 66V 660V 1000V Resolution 0 1mV Accuracy 0 5 rdg 2dgts Input impedance 660mV gt 100MOQ 6 6V 10MQ 66V 1000V 9 1MQ Overload protection 1000VDC or 750VAC rms AC VOLTS TRUE RMS 50Hz 500Hz Ranges 660mV 6 6V 66V 660V 750V Resolution 0 1mV Accuracy 1 5 rdg 8 dgts 50 60Hz on 660mV range 1 5 rdg 8 dgts on 6 6V to 660V ranges 2 0 rdg 8 dgts on 750V range Crest factor
6. et the Function Range switch to the desired resistance range 2 Reove 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 Connect the test leads to the points of measurements and read the value from the display 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 7 Audible Indication Less than 0 03V Continuity Measurements 1 Set the Function switch to the position 2 Turn off power to the circuit under test External Voltage across the components causes invalid reading 3 Connect the test leads to the two points at which continuity is to be tested The buzzer will sound if the resistance is less than approximately 300 Capacitance Measurements 1 Set the Function Range switch to the desired capacitance range 2 Connect the red test lead to the VQ jack and the black test lead to the COM jack 3 Touch the probes to the capacitor
7. hen 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 the 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 Equipment protected throughout by Double insulation Class I Alternating current Direct current Ground
8. ycle limits gt 30 and lt 70 Overload protection 500VDC or AC rms DIODE TEST Test current 1 2mA approximate Accuracy 3 0 rdg 3 dgis Resolution 1mV Audible indication lt 0 03V Open circuit volts 3 5Vdc typical Overload protection 500VDC or AC rms CONTINUITY Audible indication Less than 300 Response time 100ms Overload protection 500VDC or AC rms 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 Input Warning Beeper The meter has a beeper that warns the user when the test lead is in the current jack while the meter is switched to make a voltage measurement Another safety feature to protect the meter and you MAX MIN The MAX displays the maximum value of measurements The MIN displays the minimum value of measurements The MAX MIN appears and flashes in the LCD to display the value that is being measured now After finishing the measurement press MAX MIN button for more than 2 seconds to exit Relative A Press A button to enter the Relative mode The A annunciator is displayed and residual value on the display is subtracted and stored as a reference value In the Relative mode the value shown on the display is always the difference
Download Pdf Manuals
Related Search