- Circuit powered logic probe designed for troubleshooting fast logic circuits
- Tests TTL and CMOS logic families
- Minimum pulse width detection of 30 nanoseconds and a maximum input frequency of 20MHz
- Two sound audio beeper and LED indicators for Hi and Low
- Switch-selectable pulse detection or pulse memory function
This circuit-powered beeping 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 and Low, and Pulse/Memory, minimum pulse width detection of 30 nanoseconds and a maximum input frequency of 20MHz.
Electrical Specifications:
Power Supply: 5-15Vdc
Power Supply Protection: 20VDC/VAC
Maximum Input voltage: 40VDC/VAC (duration <15 seconds)
Maximum Input Signal Frequency: 20MHz
Input Impedance: 1MΩ
Pulse Indicator Flash Time: 500mS
Operating Temperature: 0°~40°C, relative humidity < 80%
Storage Temperature: -20°~50°C, relative humidity < 85%
Size: 7.83" x 0.82" x 0.78"
Weight: 1.4 ounces
Minimum Detectable Pulse Width:
| Frequency | 1kHz | 1k ~ 20kHz | 20k ~ 20MHz |
|---|---|---|---|
| Minimum Pulse Width |
100ns | 50ns | 30ns |
| Pulse Amplitude +3V | |||
Specifications
| Input Signal | Level | LED Indication | Buzzer |
|---|---|---|---|
| Logic "1" | TTL: >2.3±0.2Vdc CMOS: >70%Vcc ±10% |
HI (Red) ON HI (Red) ON |
Fixed Tone Fixed Tone |
| Logic "0" | TTL: <0.8V±0.2Vdc CMOS: <30%Vcc ±10% |
LO (Green) ON LO (Green) ON |
Fixed Tone Fixed Tone |
| Bad Logic Level or Open Circuit |
None | No Tone | |
| Square Wave | < 200Hz | HI and LO blinks at frequency rate |
Variable Tone at frequency rate |
| Square Wave | > 200Hz | HI and LO may or may not be ON |
Variable Tone at frequency rate |
| Narrow Hi Pulse | TTL: >2.3±0.2Vdc CMOS: >70%Vcc ±10% |
LO blinking intensity depends on pulse duty cycle |
Variable Tone at frequency rate |
| Narrow Lo Pulse | TTL: <0.8V±0.2Vdc CMOS: <30%Vcc ±10% |
HI blinking intensity depends on pulse duty cycle |
Variable Tone at frequency rate |