The Keithley 3791-KIT78-R is a connector assembly kit designed for building custom cables and harnesses compatible with Keithley Series 3700A System Switch/Multimeter instruments. The kit supplies two female 78-pin D-sub connectors with 156 solder-cup contacts, enabling users to construct reliable interconnections for data acquisition and switching applications. Rated for 300V RMS / 300V DC and 5.0A maximum, this kit supports wire gauges up to 22 AWG. Assembly and maintenance require the Model 3791-CIT contact insertion and extraction tool.
## Technical Specifications
• Connector type: Female D-sub, 78-pin
• Contact type: Solder cup
• Kit contents: Two female D-sub connectors, 156 solder-cup contacts
• Maximum wire gauge: 22 AWG
• Maximum voltage rating: 300V RMS / 300V DC
• Maximum current rating: 5.0A
• Required assembly tool: Keithley 3791-CIT (not included)
## Key Features
• Solder-cup contact design enables custom cable termination
• Rated for voltages exceeding 30V RMS — proper grounding and safety precautions required
• Both D-sub connector shells must connect to safety earth ground
• Suitable for applications requiring field assembly and maintenance
## Typical Applications
• Custom cable and harness assembly for Series 3700A systems
• Data acquisition and signal switching interconnections
• Field repair and reconfiguration of 78-pin switching modules
## Compatibility & Integration
Fully compatible with Keithley Series 3700A System Switch/Multimeter platforms. Interfaces directly with Series 3700A plug-in cards featuring 78-pin connectors, including the 3720, 3723, 3724, and 3732 models. The 3791-CIT contact insertion and extraction tool is required for proper assembly and contact maintenance.
