The Agilent/Keysight L4450A is an LXI Class C compliant digital I/O instrument engineered for high-speed pattern simulation and capture. It delivers 64 bi-directional digital I/O lines organized as eight independent 8-bit channels, each with programmable polarity, output drive modes (active high or open drain), and input thresholds from 0 V to 5 V. The instrument operates at speeds up to 10 MHz with 128 KB of pattern memory, allocable up to 64 KB per channel for flexible test scenarios.
– Technical Specifications
Digital I/O Performance
• 64 bi-directional lines in eight 8-bit channels
• Maximum frequency: 10 MHz at 50% duty cycle
• Source/sink current: up to 24 mA per line
• Programmable input thresholds: 0 V to 5 V
• Programmable output drive: 1.65 V to 5 V active high, or open drain with user-supplied pull-ups to 5 V
Measurement & Timing
• Two independent 10 MHz counter/totalizer channels
• Functions: event counting, frequency, period, duty cycle, pulse width, totalization
• Counter input thresholds: 0 V to 3 V
• 20 MHz divide-by-n programmable clock output
• Configurable handshaking protocols
Memory & Connectivity
• Pattern memory: 128 KB total capacity
• LAN interface: 10BaseT/100BaseTx standard
• Optional IEEE 488.2 GPIB interface
• Two 78-pin gold-plated D-sub connectors
– Key Features
• Remote access via fully-featured graphical web interface (Java-enabled browser)
• Includes Keysight I/O Libraries Suite
• Driver support: IVI-C, IVI-COM, LabVIEW, VEE Pro, TestStand, Measurement Studio, LabWindows/CVI, C/C++, Visual Basic 6.0
• Compact 1.61 × 8.36 × 14.93 in form factor; 3.7 kg weight
• Universal power: 100 V to 240 V ±10%, 50–60 Hz ±10%; 15 VA consumption
• Operating range: 0°C to 55°C, up to 80% RH at 40°C
– Typical Applications
Digital pattern generation and acquisition, event-based measurement, frequency and duty cycle characterization, embedded system validation, and protocol emulation requiring synchronized multi-channel control.
– Compatibility & Integration
Fully compatible with Keysight measurement ecosystems. Terminal block connectors and cable kits available separately. CSA/UL/IEC/EN safety certified.
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