ring AutoTester RMM500 User Manual

1. OVERVIEW
The Auto Tester is designed to assist Automove Technicians when troubleshoong electrical problems on a vehicle. It can be used to check current drains
directly at the vehicle fusebox without removing fuses, which greatly speeds up fault nding.
It can also measure Baery voltage, Starter cranking voltages, Alternator charging voltages, Resistance, Frequency and Duty cycle. It is also able to check circuit
connuity and check components such as diodes and LEDs. The tester is designed to be simple to use with none of the unnecessary sengs oen found on
general purpose mul-meters.
Current measurement – AMPS (A)
There are two methods provided for tesng current draw:-
Direct Current Tesng
The convenonal way of measuring current involves connecng a mul-meter in series with the circuit under test by rst removing cables. The Auto Meter is
able measure current directly from the two exposed points on the rear of a fuse (Mini, ATC or Maxi) without the need to removing it rst. This method is faster
and also allows much larger currents up to 80 amps to be tested.
In-Line Current Tesng
By inserng the current adapter, the Auto Tester can also be used like a tradional mul-meter buy measuring amps in-line with the operang circuit. Two
ranges are provided depending on the range and accuracy of measurement required. The smaller range (1mA – 1A) is useful for accurate measurement of
parasic drains on a vehicle baery.
Voltage measurement - VOLTS (V)
This mode can measure baery voltages up to 50 volts. An addional ‘trac light’ voltage indicator provides a fast indicaon of charge on 6, 12 & 24V baery
systems.
Starter Test (12V/24V vehicles)
This seng checks baery health during starng by measuring the voltage drop whilst under load of the starter motor.
Alternator Test (Normal and Smart 12V/24V alternators)
Provides a check of alternator charging voltages to ensure they fall within normal operang ranges. It can also perform a diode ripple test to check failure of
any alternator diodes.
Resistance measurement - OHMS (Ω)
Allows the resistance of electrical components such as sensors to be checked for short circuit or open circuit failure.
Frequency measurement - HERTZ (Hz)
This seng allows regular pulses in a circuit to be detected and measured. Examples of use would be fuel injectors, rotaon sensors and proximity sensors.
Duty cycle measurement - %
Duty cycle measurement helps indicate the percentage of me a device is acve and is useful to check if a sensors are being triggered correctly.
Connuity Test
When this mode is selected, you can test the connuity of the cable, circuit or common ground. The beeper will sound when the connuity is good.
Diode & LED Test
Whilst in the Connuity test mode, the condion of diodes and LEDs can also be tested.
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10422 RMM500 Instructions UK 140x170mm 15pp MULTI LANGUAGE.indb 2 23/08/2017 17:13

ring AutoTester RMM500 Specifications

General

Brand	ring
Model	AutoTester RMM500
Category	Test Equipment
Language	English