allsun Electrical Circuit Testers Logic Probe Troubleshooting Tool Instrument Visual and Audio Indications for Logic Levels Pulses Detector EM4610A
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Gary Bagnell
> 3 dayit works
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Richard Hardy
> 3 dayQuality at a Great Price.
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gongoin
> 3 dayPerfect tool at a good price
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Daphney Feest
Greater than one weekHelped me fix my commodore 64!
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Melanie Grove
> 3 dayLogic tester was easy to use and did the job it was supposed to.
INSTRUCTION About 1-8
1. Probe
2. HI LED (red LED)
3. LO LED (green LED)
4. TTL/CMOS Switch: It can be set for the logic family of the circuit under test.
5. Yellow LED: If the PULSE/MEM switch is in the “MEM” position and the unit captures a positive or negative pulse,the yellow LED will light and does not turn off until the PULSE/MEM switch is set to the “PULSE” position.
6. PULSE/MEM Switch: (PULSE) Normal operation mode for pulse or level detection. (MEM) pulse capture or memory.
7. Black Alligator Clip: It should be connected to ground or common of the circuit to be tested.
8. Red Alligator Clip: It should be connected to Vcc of the circuit to be tested.
Note:
- Dont use the unit if it is damaged or operates abnormally.
- Dont ground youself when you use the unit.
- To avoid electric shock,dont touch any naked conductor with hand or skin.
- Do not operate the meter around explosive gas,vapor,or dust.
- Never exceed the unit’s limits or the ratings specified in the “Electrical Specifications” section.
- To avoid damage to the unit,do not input more than 40V AC or DC.
- Before use,verify this unit’s operation by measuring known signals.
Operation Instruction
Operation Instruction
- Connect the black alligator clip to ground or common of the circuit to be tested,the red alligator clip to Vcc of the circuit.
- According to the type of logic to be tested,select TTL or CMOS with the TTL/CMOS switch.
- Note: TTL level is nominal 0 to 5 VDC,and CMOS levels are 0 to 5-15 VDC.
- For Pulse or Logic level testing,set the PULSE/MEM switch to PULSE position.
- Touch the probe tip to the circuit point to be tested.The unit will give LED and sound indications indicating the logic level or signals.
- For more detailed information,see Table in the “Specification” section.
- Setting the PULSE/MEM switch to MEM position allows the unit to capture a positive or negative pulse,the yellow LED will light and does not turn off until the switch is set to PULSE position.