Summary of 6688D
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Automotive multimeter instruction manual.
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- １ - 6688d 6000 digital automotive enging analyzer multimeter operation manual this instrument is a compact 、battery operated、handheld with safety protector 、streamline 、 6000 digital automotive engine analyzer multimeter for measuring dc/ac voltage, dc/ ac current, resistance, , capacitance, frequ...
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- ２ - ac/dc 600ma ma 600ma ac/dc ac/dc 20a 20a 20a ac/dc rpm v/Ω/rpm 250v ac/dc duty cycle(%) dwell angle 20amp measurement continuous for 30 seconds maximum. Ohm can not be measured if voltage is present ,ohms can be measured only in a non-powered circuit .However ,the meter is protected to 250 vol...
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- ３ - ac voltage true rms(auto ranging) ranges:600mv,6v,60v,600v,750v resolution:100uv accuracy: : 400mv ,750v± (3.0%rdg+15dgt) at 50hz to 100hz ,4v,40v,400v, ± (1.5%rdg+15dgt) at 50hz to 1khz input impedance:>10mΩ overload protection: 1000vdc or 750vac rms. Dc current ranges: 60ma,600ma,20a. Resolu...
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- ４ - getting started this chapter will help you get started. It describes the basic functions of the meter. Front panel ① ac/dc & switch ② hold switch ③ max/min switch ④ peak hold switch ⑤ back light switch ⑥ range & stroke 4/2(dis) & #cyl trig± & dc output/ square wave output ⑦ function/range swit...
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- ５ - new “max or min” occurs. 4.5.2. Press the max/min key and a blinking “max min” will appear. The meter will display the present reading, but will continue to update and store the max and min readings. To exit max/minmode press and hold the max/min key for 2 seconds. Peakhold button the peak hol...
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- ６ - *circuit open ,these is no “beep” and the display shows “ol” 4. Diode check important: turn the power off to the test circult select the range with the rotary switch . Press “ ” button to selectthe diode check( ). Insert: *black lead in com terminal. *red lead in v/ Ω/ rpm terminal. Touch the ...
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- ７ - select the rpm range with the rotary switch. Or select the x10rpm range with rotary switch(60 to 12,000rpm). Multiply the displayed reading times ten to get actual rpm. Insert the induction pick-up connecting terminal into the meter. *ground lead in com terminal. *output lead in v/ Ω/ rpm term...
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- ８ - press the “ac/dc” function button to select ac or dc. Insert: *black lead in com terminal. *red lead in the 10a or ma terminal. Important: turn off all power to the circuit or disconnect the circult from the power source. Connect: *the red probe to the side of the circuit closest to the power ...
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- ９ - *touch the positive(+)lead to the battery case around the positive (+) battery post ,do not touch the post . A reading of more than 0.5v indicates excessive surface discharge . Dirt ,moisture and corrosion are a cause of surface discharge .Clean the battery with a baking soda and water solutio...
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- １０ - [4] battery test (load) this tests the battery ’s capacity to deliver sufficient cranking voltage. ·set the rotary switch to voltage. ·connect the positive (+) lead to positive (+) battery terminal. ·connect the negative (-) lead to negative (-) battery terminal. ·disable the ignition; crank ...
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- １１ - circuit or component creating resistance. The resistance decreases the amount of voltage available. The bulb will not light or the motor will not turn if the voltage is too low. Maximum voltage drop maximum voltage drop should not be more than 0.1 volt per wire, ground, connection, switch or ...
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- １２ - [3] battery power to starter solenoid (+) this test checks battery source efficiency to the starter solenoid . ·set the rotary switch to voltage . ·establish the base voltage that you will compare test voltage against (see base voltage , volt drop test [1] ). ·connect the positive (+) lead to...
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- １３ - 6-8cyl, under 300 cid 180-210 amp, maximum 6-8cyl, over 300 cid 250 amp, maximum charging system tests [1] battery (+) this test checks for alternator output voltage at the battery. ·set the rotary switch to voltage . ·connect the positive (+) lead to the positive (+) battery terminal. ·conne...
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- １４ - insert: ·black lead in com terminal. · red lead in v/ Ω rpm terminal. ·disconnect the coil from the vehicle wiring harness. ·note: the resistance in the meter leads must be subtracted to get an accurate measurement at the 0.50-2.0 range. Short the leads together and press the “tel” button . T...
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- １５ - specifications. Rotor test: connect the test probes to opposite ends of the rotor contacts . In general, resistance should be 0.1(Ω) or less. Refer to the manufacture ’s specifications. [5] pick-up coil resistance (Ω)/voltage test (v) ·the resistance test checks for open circuits or high resi...
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- １６ - computerized vehicle control systems are made up of three basic component groups. These groups are: 1. Sensors: they are input devices that supply information about engine operating conditions and the surrounding environment to the vehicle computer. 2. Engine control module: a vehicle compute...
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- １７ - ·duty cycle measured in percent of high or low time or dwell degrees (mixture control solenoid) duty cycle, what is it ? Duty cycle is the percentage (%) of time a voltage is positive compared to negative:on compared to off. For example; duty cycle measurements are used for mixture control so...
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- １８ - typical thermistor applications are: ·engine coolant temp. (ect) ·air charge temp. (act) ·manifold air temp. (mat) ·vane air temp. (vat) ·throttle body temp. (tbt) voltage presence ·disconnect the vehicle wiring harness at the sensor. ·select the voltage range with the rotary switch. Insert: ...
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- １９ - in the exhaust stream this voltage is used by the computer to change the air/fuel mixture. This test will check oxygen sensor signal output levels. ·disconnect the vehicle wiring harness at the sensor. Install a jumper wire. ·select the voltage range with the rotary switch. Insert: ·black lea...
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- ２０ - 4. Meter reading do not change. ·“hold”feature is still toggled on..