The Keithley 2790-HH SourceMeter Switch System combines high-voltage sourcing, precision measurement, and multi-channel switching in a compact modular instrument. Engineered for automated functional testing, it delivers programmable voltage (50V to 500V) and current (0 to 50mA) sourcing with integrated DMM capability and switching matrices supporting up to 40 channels. Ideal for automotive ignition systems, connector validation, and complex harness characterization where simultaneous source and measure operations are required.
Technical Specifications
Sourcing Performance
• Voltage Source: 50V to 500V programmable, 100mV resolution, 0.5% + 0.1V accuracy (2-year), 250ms settling time (50V to 500V step)
• Current Source: 0 to 50mA programmable, 10µA resolution, 0.06% + 10µA accuracy (2-year), 1ms settling time
• Maximum Output Current: 50µA at rated accuracy; <1mA typical short-circuit; 1mA safety limit (impedance-limited)
• Compliance Voltage: 5.5V ±10%
• Temperature Coefficient: Voltage (0.001% + 0.005V)/°C; Current specified across 0–18°C and 28–40°C
• Dry Circuit Clamp: 20mV ±10%, source current ≤1mA
Measurement Capabilities
• 6-1/2 digit DMM with dual resistance measurement methods: constant-current for 10GΩ // <400pF or 10MΩ ±1% (100mV–10V ranges); 10MΩ ±1% (100V, 1000V ranges)
• Input Bias Current: <100pA at 23°C
• A-D Linearity: 2.0 ppm reading + 1.0 ppm range
• Input Protection: 1000V front, 300V rear (7702 card)
Switching Architecture
• Up to 40 channels maximum
• Supported modules: 7702 (40-ch general-purpose multiplexer), 7751 (high-voltage source/switch), 7752 (low-voltage current-source-only), 7753 (1MΩ high-voltage source/switch)
Physical & Environmental
• Mainframe: 89mm H × 213mm W × 370mm D or 104mm H × 238mm W × 370mm D
• Supply: 100/120/220/240V ±10%, -5%; 50/60Hz
• Lithium battery-backed memory (3-year retention at 23°C)
• 2-year calibration cycle
– Key Features
• Modular switching matrix accommodates single or dual test stands
• Impedance-limited safety design protects DUTs in dry-circuit applications
• Selectable input impedance for low-noise voltage measurement
• Mixed sourcing modes enable device and signal testing in one platform
– Typical Applications
• Automotive airbag inflator and seatbelt pre-tensioner ignition testing
• Wiring harness and connector functional validation
• High-voltage component characterization and burn-in screening
– Compatibility & Integration
Accepts 7700-series switching cards for flexible channel configuration and mixed measurement/sourcing requirements across automotive, industrial controls, and component reliability workflows.
