This logic probe is designed for troubleshooting fast logic circuits. It features TTL and CMOS compatibility, switch-selectable pulse detection or pulse memory function, LED indicators for Hi, Low, and Pulse/Memory, minimum pulse width detection of 30 nanoseconds and a maximum input frequency of 20MHz. This unit is circuit powered.
Electrical Specifications:
- Maximum input signal frequency: 20MHz
- Input Impedance: 1MΩ
- Operating Supply Range: 4VDC Minimum, 18V DC Maximum
- TTL Logic "1" (HI LED): >2.3±0.2V DC
- TTL Logic "0" (LO LED): <0.8V±0.2V DC
- CMOS Logic "1" (HI LED): >70% Vcc±10%
- CMOS Logic "0" (LO LED): <30% Vcc±10%
- Minimum Detectable Pulse width: 30 Nanoseconds
- Maximum Signal Input Protection: ±220V AC/DC (15 sec)
- Power Supply Protection: ±20V DC
- Pulse Indicator Flash Time: 500ms
