Keysight L4421A/GPIB 40-Channel Armature Multiplexer
Keysight L4421A/GPIB is a 40-channel armature multiplexer with LXI Ethernet, optional GPIB interface, thermocouple reference, and graphical web interface.
Product details
| Model | L4421A/GPIB |
| Manufacturer | Keysight |
| Category | Switch Units |
| Availability | Made to order |
Description
Overview
The Keysight L4421A/GPIB is a versatile, high-performance 40-channel armature multiplexer with full LXI Class C compliance and Ethernet connectivity. The instrument combines analog switching capability with advanced data acquisition features, including low thermal offset characteristics and a built-in thermocouple reference junction. The optional GPIB interface provides backward compatibility with legacy test systems, while the graphical web interface and standard software drivers enable quick integration into modern automated test environments.
Key Features
- 40 2-wire latching armature relays (44 channels total with fused inputs)
- LXI Class C compliance with built-in Ethernet connectivity
- Optional GPIB interface for legacy system integration
- Fully-featured graphical web interface for configuration and control
- Low thermal offset for accurate temperature measurements with external multimeter
- Built-in thermocouple reference junction
- Scan up to 100 channels per second
- 300V, 1A switch; 2A carry current
- Relay counter for maintenance tracking
- Software drivers for common programming environments
Applications
- Automated temperature monitoring systems
- Data acquisition and test automation
- AC and DC current measurement systems
- Industrial process monitoring and control
- Research and laboratory instrumentation
Specifications
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Keysight L4421A/GPIB 40-Channel Armature Multiplexer