Mac Em710 Multimeter Owners Manual

Mac Em710 Multimeter Owners Manual Online
Mac Em710 Multimeter Owner's Manual Online

Locate the openings in the case where you'll insert the test leads.

Previously used - Good Condition. The multimeter has been been used and was well cared for, with only light wear. The display has a few small scratches from normal use. The scratches are not excessive Used Car under $10000.
Pulse management with 20,000 count on the high resolution 4,000 count display; Accurate automotive electronics test and advanced measurements; Direct reading of dwell without using duty-cycle to dwell conversion chart when testing electronic fuel injection, feedback carburetors, and ignition systems.

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Most multimeters have several jacks used for this purpose.

One is usually labeled 'COM' or (-), which stands for for common. This is where the black test lead will be connected. It will be used for nearly every measurement taken.^[3]
The other jack or jacks should be labeled 'V' (+) and the Omega symbol (an upside down horseshoe) for Volts and Ohms, respectively.
The + and - symbols represent the polarity of probes when set for and testing DC volts. If the test leads were installed as suggested, the red lead would be positive as compared to the black test lead. This is nice to know when the circuit under test isn't labeled + or -, as is usually the case.
Many meters have additional jacks that are required for current or high-voltage tests. It is equally important to have the test leads connected to the proper jacks as it is to have the selector switch range and test type (volts, amps, ohms) set. All must be correct. Consult the meter manual if you're unsure which jacks should be used.

A dwell meter is used to check the dwell angle on vehicles with a points-type ignition. Dwell angle is the length of time (measured by the degree of rotation of the distributor cam) the contact points open on a points-type ignition system. Points-type ignition systems were commonly used on vehicles manufactured before the mid-1970s. The dwell angle must be periodically checked on these vehicles to ensure proper operation of the ignition system. In addition, the dwell angle on these vehicles must be checked before setting the ignition timing.

Connecting the Tach Dwell Meter

Step 1

Run the engine long enough to bring it up to normal operating temperature and then shut it off.

Step 2

Connect the positive lead on the tach dwell meter to the positive terminal on the ignition coil.

Step 3

Connect the negative lead on the tach dwell meter to the negative terminal on the ignition coil.

Open the small metal cover on the side of the distributor cap and insert an Allen wrench into the screw behind the cover.

Checking the Dwell Angle

Step 1

Step 2

Take the reading on the tach dwell meter and compare it with the figure on the engine tune-up decal in the engine bay or in the vehicle's service manual.

Step 3

Turn the Allen wrench slowly to adjust the dwell angle to the correct setting.

Step 4

Step 5

Remove the Allen wrench from the distributor. Make sure the small metal cover on the side of the distributor is closed.

Remove the electrical leads from the ignition coil.

In the eventthere is a conflict between terms defined in this glossary and identical or substantiallysimilar terms defined in the glossaries to the Freddie Mac Single-Family Guide,Freddie Mac Multifamily Seller/Servicer Guide or Freddie Mac Loan Selling Advisor ® User Guides, the terms defined in the Freddie Mac Single-Family Guide, FreddieMac Multifamily Seller/Servicer Guide and Freddie Mac Loan Selling Advisor UserGuides shall prevail. Regis counseling mac manual. Learning Center Glossary This glossaryis provided as an educational tool for the Seller/Servicers to use.

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