1. Specificity of sensitivity, determined by the detainee / resistance (resistance) divided by voltage, for example 20 kΩ / v for DCV and 8 kΩ / v for ACV. (20 kΩ / v → I = E / R = 1 / 20,000 = ½ x 10- 4 A = 0,05mA = 50 uA). Multimeter uses a current of 50 micro-Amperes (50 uA) for gauges (meters) and will draw a maximum current of 50 uA of the circuit being tested.
2. Additional functions as testers (tester) transistor to determine hfe transistor (ability transistor amplifies electric current to several hours), testing diodes and capacitors capacity in connection with repair work (repair) of electronic equipment.
a. Limits Measure (Range)
1. Limit Measure (Range) Strong Flow: usually consists of figures; 0.25 – 25 – 500 mA. To limit measure (range) of 0.25, a strong current that can be measured ranges from 0 – 0.25 mA. To limit measure (range) 25, a strong current that can be measured range of 0-25 mA. To limit measure (range) 500, a strong current that can be measured range from 0-500 mA.
2. Limit Measure (Range) Voltage (ACV-DCV): composed of numbers; 10-50 – 250 – 500-1000 ACV / DCV. Limit measure (range) 10, means the maximum that can be measured voltage is 10 Volts. Limit measure (range) 50, means the maximum that can be measured voltage is 50 Volts, and so on.
3. Limit Measure (Range) Ohm: consists of figures; x1, x10 and kilo Ohm (kΩ). To limit measure (range) x1, all measurement results can be read directly on board scale (in units of Ω). To limit measure (range) x10, all measurement results read on board scale and multiplied by 10 (the unit Ω). To limit measure (range) kilo Ohm (kΩ), all measurement results can be read directly on the board of the scale (the unit kΩ), for measuring limit (range) x10k (10kΩ), all measurement results read on board scale and multiplied by 10kΩ.
b. Battery
On Multimeter used dry batteries (dry cell) type UM-3, is used to distribute / drain current to the coils rotate when the multimeter is used to measure the components (minus the integrated components / Integrated Circuit / IC). The battery is connected in series with the cable hole investigator / probes (+ / out) where the battery negative pole is connected with the positive terminal of the cable hole investigators. See Figure 5.
Figure 5. The circuit pencatu battery circuit.
c. Symbols
To facilitate learning, measuring voltage (voltmeter), measuring strong currents (Ampere-meter), and measuring the value of resistance / resistance (Ohm-meter) are displayed with symbols like those in Figure 6.
Figure 6. Symbol Test Equipment