Keithley 7052 4×5 Matrix Switch Card

The Keithley 7052 is a 4×5 matrix switch card that routes signals across a 20-crosspoint array for automated test and measurement systems. Each crosspoint features 3-pole Form A relay contacts with High, Low, and Guard connections, enabling flexible signal conditioning and isolation. The card field-installs into Keithley Model 705 or Model 706 mainframes and supports matrix expansion through multi-card wiring configurations.

## Technical Specifications

**Matrix Architecture**
• 4 rows × 5 columns (20 crosspoints)
• 3-pole Form A (normally open) relay per crosspoint
• Relay actuation time: <2 ms (mainframe-exclusive)
• Relay drive current: 15 mA per relay

**Signal Handling**
• Maximum voltage: 200 V peak
• Maximum switched current: 200 mA; carry current: 500 mA
• Maximum load: 10 VA peak non-inductive
• Contact resistance: <1 Ω per contact to rated life
• Contact potential: <5 µV High to Low (<1 minute post-actuation); 10¹² Ω, 10⁹ Ω, 50 pF typical
• Common mode input isolation: >10⁹ Ω, 100 pF typical
• Crosstalk: <−60 dB @ 1 MHz, 50 Ω load
• Offset current: <100 pA

**Contact Life**
• 10⁸ closures cold switching
• 10⁷ closures at maximum signal levels

## Key Features

• Three-wire signal path (High, Low, Guard) per crosspoint
• Screw terminal quick-disconnect connectors; accepts #18 AWG maximum
• Compact form factor: 32 mm H × 114 mm W × 227 mm L (0.61 kg)
• Any-to-any input-to-output routing within matrix configuration

## Typical Applications

General-purpose signal routing in production test, research measurement, and data acquisition systems requiring low-noise switching with galvanic isolation.

## Compatibility & Integration

Field-installable in Model 705 (requires Program 6 software B6 or later) and Model 706 (requires A1 software or above). Expandable to larger matrices: two cards create 4×10 or 8×5 configurations.