Keithley 7753
High Voltage Source / Switch Card, 500V, 1MOhm

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Product Overview

Keithley 7753 

Rent Keithley 7753 High Voltage Source / Switch Card, 500V, 1MOhm

 

The Keithley 7751, and 7753 Source/Switch Modules are designed exclusively for use in the Keithley 2790 SourceMeter Switch System for electrical checks of airbag inflators and a variety of other automotive electrical test applications. These cards provide the programmable high voltage and low current sourcing, plus the multichannel switching support required to measure insulation resistance and conductor continuity in these applications. 

The Keithley 7751 and 7753 cards include programmable DC voltage 50–500V and current 0–50mA sources, as well as relay switching. A built-in current-to-voltage converter on these units is used with the voltage source to measure the insulation resistance. They can also be used to measure currents from 0–50µA. The constant current source is useful for measuring the resistance of bridgewires and shunt bars. Four banks of twopole relays provide a sufficient number of terminals to connect two single inflator units or one dual inflator unit to the Keithley 2790 mainframe for testing. The mainframe will accommodate two plug-in modules, so a single Keithley 2790 system can be connected to two test stands and be used to test two dual inflator airbag modules. Parallel testing in the form of “voltage soak with one card, measure with the other” is possible for both single and double test stand configurations. The switch matrix of the Keithley 7751 and 7753 simplifies implementing contact verification tests and allows the Keithley 2790 to verify test voltages and currents for increased measurement reliability.

Features and Specifications of the Keithley 7753 includes:

• Programmable 0–50mA current source
• Programmable 50–500V voltage source
• 1MW High Voltage Source/Switch Module
• Built-in I/V converter 
• Sourcing and switching for airbag inflator testing with the Keithley 2790
• Low energy sources, a hardware source interlock, and programmable shunts help prevent accidental detonations