Philips ECG - PR31 Logic pulser probe, compatible with most logic families.
The PR-31 Pulse Generator is used to inject a signal into a logic circuit without having to remove the IC or open the circuit. Using the companion PR-21 Logic Probe you can detect component failures or wiring errors. The average power of the injected signal is limited by supply voltage (Vcc) of the circuit under test, and with its short duration pulses, will not damage circuit components.
The PR-31 Logic Pulsar produces a 10µs signal at a 100 mA load and can be switched to either 0.5Hz or 400Hz. It is also capable of generating a square wave equal to approximately 90% of the supply voltage (Vcc) at the square wave output terminal so that an oscilloscope can be used to observe and trace signals. The PR-31 Logic Pulsar also has an external sync input, which enables the user to synchronize the pulse output with an external signal, such as a computer clock circuit.
Specifications - Logic Probe
Frequency Response: 50MHz
Detectable Pulse Width: 10ns
Logic Threshold: TTL Hi 3V, Lo 0.75V
Input Impedance: CMOS Hi 60% Vcc, Lo 15% Vcc
Operating Supply Voltage: 4-18V
Max. Input Protection: ±70VAC/DC @ 15s
Power Supply Protection: ±20V
Specifications - Logic Pulser
Pulse Repition Rate: 0.5/400Hz
Pulse Width: 10µs
Output Current:
Pulser Mode @ 0.5Hz 100mA sink.source
Square Wave Mode @ 500Hz 5mA sink/source
Sync Input Impedance 1MΩ
Operating Supply Voltage 5-15V
Max. Sync Input Protection ±120Vdc @ 30s
Output Protection ±35VDC @ 30s
Power Supply Protection ±20VDC @ 30s
For use with logic probe or osciloscope.
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