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A test probe, test prod, scope probe or test lead is a physical device used to link electronic test equipment to a device under test or DUT. They range from extremely easy, rugged devices to complex probes that are sophisticated, expensive, and delicate. A current probe generates a voltage proportional to a current in the circuit being determined; as the proportionality continuous is known, instruments that respond to voltage can be calibrated to indicate current. Current probes can be used both by determining instruments and oscilloscopes. To determine or display the modulating waveform of a modulated high-frequency signal, for example: an amplitude-modulated radio signal-a probe fitted with an easy diode de-modulator can be used. The probe will output the modulating waveform without the high-frequency carrier.

In-circuit test or ICT is an example of white box testing where an electrical probe tests a populated printed circuit board "PCB", checking for shorts, opens, resistance, capacitance, and other basic quantities which will show whether the assembly was correctly fabricated. It may be carried out with a bed of nails type test fixture and specialist test equipment, or with a fixture-less in-circuit test setup.

A function generator is typically a piece of electronic test equipment or software used to generate different types of electrical wave forms over a wide range of frequencies. Some of the most common wave forms created by the function generator are the sine, square, triangular and saw-tooth shapes. These wave forms can be either repetitive or single-shot which needs an internal or external trigger source. Integrated circuits used to generate wave forms may also be described as function generator ICs. Although function generators cover both audio and RF frequencies, they are typically not suitable for applications that need low distortion or stable frequency signals. When those characteristics are needed, other signal generators would be more appropriate. Some function generators can be phase-locked to an external signal source which may be a frequency recommendation or another function generator. Function generators are used in the development, test and repair of electronic equipment. For example, they may be used as a signal source to test amplifiers or to introduce an error signal into a control loop.

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4X Vactrol Vactec OPTO resistor OPTO coupler VTL5C1 Perkin Elmer 4 PCS NEW

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NEW OPTO

NEW OPTO 22 G4B100 PC BOARD

NEW OPTO 22 G4B100 PC BOARD

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NEW OPTO

NEW OPTO 22 AC28 INTERFACE CARDS ISA BUS TO PAMUX BUS ADAPTER 001794E

NEW OPTO 22 AC28 INTERFACE CARDS ISA BUS TO PAMUX BUS ADAPTER 001794E

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OPTO 22

OPTO 22 PB32DEC I O BOARD w 6 ODC5Q DIGITAL OUTPUT MODULE

OPTO 22 PB32DEC I O BOARD w 6 ODC5Q DIGITAL OUTPUT MODULE

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NEW OPTO

NEW OPTO 22 001792K PC BOARD ASSEMBLY W CONNECTOR FEMALE 54POS

NEW OPTO 22 001792K PC BOARD ASSEMBLY W CONNECTOR FEMALE 54POS

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120D3 Opto

120D3 Opto 22 lot of 56 new in box

120D3 Opto 22 lot of 56 new in box

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OPTO 22

OPTO 22 SNAP AIMA 4

OPTO 22 SNAP AIMA 4

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Opto 22

Opto 22 SNAP LCSX

Opto 22 SNAP LCSX

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OPTO 22

OPTO 22 SNAP OMR6 C

OPTO 22 SNAP OMR6 C

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OPTO 22

OPTO 22 SNAP AOA 23 iSRC

OPTO 22 SNAP AOA 23 iSRC

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Opto 22

Opto 22 G4EXR Remote Analog Extender Brain Card Mistic Protocol

Opto 22 G4EXR Remote Analog Extender Brain Card Mistic Protocol

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OPTO 22

OPTO 22 SNAP PAC RCK8

OPTO 22 SNAP PAC RCK8

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OPTO 22

OPTO 22 SNAP IDC 16

OPTO 22 SNAP IDC 16

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OPTO 22

OPTO 22 SNAP I O SNAP IAC5 NEW IN BOX

OPTO 22 SNAP I O SNAP IAC5 NEW IN BOX

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Opto 22

Opto 22 PB4AH Four Channel Analog Mounting Rack

Opto 22 PB4AH Four Channel Analog Mounting Rack

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Opto 22

Opto 22 120A10 Solid State Relay 120 240VAC Lot of 12

Opto 22 120A10 Solid State Relay 120 240VAC Lot of 12

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OPTO 22

OPTO 22 007214D Digital Brain Board

OPTO 22 007214D Digital Brain Board

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Opto 22

Opto 22 G4PB24 24 Channel Terminal Board with 24 G4 0AC5

Opto 22 G4PB24 24 Channel Terminal Board with 24 G4 0AC5

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Opto 22

Opto 22 G4LC32 Model 200 Local Processor Unit Mistic Controller Control System

Opto 22 G4LC32 Model 200 Local Processor Unit Mistic Controller Control System

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Opto 22

Opto 22 M4SARC M4 Arcnet Adapter Coaxial Cable Arcnet Network Interface Card

Opto 22 M4SARC M4 Arcnet Adapter Coaxial Cable Arcnet Network Interface Card

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OPTO 22

OPTO 22 SNAP IDC 16

OPTO 22 SNAP IDC 16

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Opto Switch

Opto Switch Fairchild H21L0I Bag of 50 pcs

Opto Switch Fairchild H21L0I Bag of 50 pcs

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Opto 22

Opto 22 G4HDAR Remote Analog 32 Channel I O Unit Mistic Protocol High Res

Opto 22 G4HDAR Remote Analog 32 Channel I O Unit Mistic Protocol High Res

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