I got one of these about a month ago,whitch
one setting do I use?I'm not stupid but I've
never used one before.So if you not helping
keep your coments.
Thanks Pep

:rockon: :rockon:

 

You can use the meter alot of ways. If it's a nice one you can select vdc and check volts, or select ohm's and you can ohm out sensors or check temp. It is a good tool to have, just keep trying out.

 

ohms the little horseshoe lookin thing is used to check resistance in a circuit.

V the is voltage, there's a 2 types 1 is ac- alternating current (won't get used much in the car) and then there's dc -direct current, which is the voltage that the load needs to operate.

A is amperage and that's the total amount of current in a circuit.

this all that i could think of it, this should be a little useful to u.

 

If it came with a book, start there. It's easy to damage one if you're not familiar with it. To measure voltage, (V) you connect to it in parallel, like as if you are connecting the leads to the + and - of a battery. DC for your car, AC for your house. To measure current ( A, Amps, Amperes), you connect the meter in series with the circuit you're testing. Kind of like making the meter a wire in the circuit. The red probe goes to the voltage source, current travels through the meter out the black lead to the device who's current is being measured. To measure continuity, you can use the meter to see if a circuit is complete. take a piece of wire, and touch each lead to each end of it. (or just touch the probes together) The meter should go down almost to zero, meaning there's little resistance. If you put the probes across say, a light bulb, you should get a higher reading. Just remember to select the proper range, V, A, Or the Omega symbol (upside down U with feet) for ohms (resistance) and start at the highest range in that scale. If you don't know how high the current may be, start high. Most DVM's don't usually go higher than 10A so don't try to measure alternator or starter current

Sorry if the next part loses anyone.

An understanding of the basics of electronics may help too.
(here comes the math part)
There's a formula to figure out electrical stuff. It's called Ohm's law. It's E/I*R

E=Voltage
I=current (Amps)
R=resistance(Ohms)

Example:

13V/3A=4.3 Ohms

100V/200Ohms=0.5 Amps

2A * 50 Ohms = 100V

Watts can also be calculated from this law.
If you know 2, you can calculate the other.

formulas for figuring out power consumption
P=I^2*R (current squared x resistance)
P=E*I
P=power(Watts)

for instance, say you have a 20 Watt bulb in your car. you can figure it's resistance and current out with the formula.

P=20W
E=13V
If E*I = P, then P/V=I or 20/13=1.5 amps
The resistance of the bulb would be 13/1.5=8.6 Ohms

Confused yet?

 

Hey. Run by your local Radio Shack they usually have beginners books. I know I've seen one on Multimeters.

David

 

How did you end up choosing the thirdgen tuned port board to ask about a multimeter?

 

I've heard that many people use them to
fine tune there TPI.Check the voltage on
sensors.:rockon: :rockon:

 

Nice recover

 

Thats why I got it. :rockon: