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Worldwide supplier of high quality electrical / electronic components

Call Us: +800-631-1250

 

ECG Test Equipment

Logic Probes

PR-21

Logic Probe And 20mhz Pulse Detector
  • Perfect Trouble Shooting Tool
  • 20MHz Pulse Detector
The PR-21 is a versatile instrument for troubleshooting and analyzing logic circuits. Features include visual indication of pulse level and pulse presence, pulse memory, plus an audible, two-tone, logic state indicator. The probe responds to pulses as narrow as 30ns and pulse trains up to 20MHz, and is compatible with TTL, DTL, RTL, HTL, CMOS and MOS. It is also compact and light weight. Three color-coded LEDs indicate pulse presence and high/low logic states. Visual indication is complemented by audible tones of two distinctly different frequencies to distinguish the logic states easily. The PR-21 Logic Probe is a valuable servicing aid, especially when used in conjunction with the PR-31 Logic Pulsar.
  • Switch Selectable
    - Pulse Detection or Memory
    - TTL/CMOS
  • Audible Logic State Tones
  • Input Impedance 1MΩ
  • Detects 30ns Pulses
  • Operates to 20MHz
  • Color Coded LEDs
  • Circuit Powered
  • 90-Day Limited Warranty
Input Signal Frequency: 20MHz Max
Minimum Detectable Pulse Width: 30ns
Input Impedance: 1MΩ
Operating Supply Range (Vcc): 4V DC Min., 18V DC Max., TTL Logic “1” (Hi LED) >2.3 ±0.2V DC, Logic “0” (Lo LED) <0.8 ±0.2V DC, CMOS Logic “1” (Hi LED) >70% Vcc ±10%, Logic “0” (Lo LED) <30% Vcc ±10%
Maximum Allowable Supply Voltage (Vcc): ± 20V DC
Power Supply Protection: ±20V DC Max. (15 sec.)
Signal Input Protection: ±220V AC/DC Max. (15 sec.)
Pulse Indicator Flash Time: 500ms
Operating Environment: 0°C to 50°C, <80% relative humidity
Storage Environment: -20°C to 65°C, <75% relative humidity
Dimensions, Weight: 8.2” long x 0.7” dia. (21cm x 1.8cm) net weight 1.6 oz. (45g)

PR-31

Logic Probe And Pulse Generator
  • Trouble Shooting/Design Tool
  • Pulse Generator
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.
  • Use with Companion Logic Probe PR-21 or Scope
  • Compatible with Most Logic Families
  • Signal Injector (Square Wave)
  • Switchable 0.5/400Hz Pulse Rate
  • Sources/Sinks 100mA Pulses
  • External Sync Input
  • Circuit Powered
  • 90-Day Limited Warranty
Input Signal Frequency: 20MHz Max
Minimum Detectable Pulse Width: 30ns
Input Impedance: 1MΩ
Operating Supply Range (Vcc): 4V DC Min., 18V DC Max., TTL Logic “1” (Hi LED) >2.3 ±0.2V DC, Logic “0” (Lo LED) <0.8 ±0.2V DC, CMOS Logic “1” (Hi LED) >70% Vcc ±10%, Logic “0” (Lo LED) <30% Vcc ±10%
Maximum Allowable Supply Voltage (Vcc): ± 20V DC
Power Supply Protection: ±20V DC Max. (15 sec.)
Signal Input Protection: ±220V AC/DC Max. (15 sec.)
Pulse Indicator Flash Time: 500ms
Operating Environment: 0°C to 50°C, <80% relative humidity
Storage Environment: -20°C to 65°C, <75% relative humidity
Dimensions, Weight: 8.2” long x 0.7” dia. (21cm x 1.8cm) net weight 1.6 oz. (45g)
Output Pulse Rate: 0.5/400Hz
Output Pulse Width: 10-15µs
Output Pulse Amplitude: Approx. 90% Vcc
Output Current: 100mA Sink/Source
Square Wave Output Current: 5mA Sink/Source
Sync Input Impedance: 1MΩ
Power Supply Range (Vcc): 5-15V DC
Overload Protection: Power Supply 20V DC Max. (30 sec.), Sync Input 120V DC Max. (30 sec.), Test Point 35V DC Max. (30 sec.)
Operating Environment: 0°C to 50°C, <80% relative humidity
Storage Environment: -20°C to 65°C, <75% relative humidity
Dimensions, Weight: 8.2” long x 0.7” dia. (21cm x 1.8cm) net weight 1.4oz. (40g)

TC-30

ECG Temperature Probe