The Agilent/Keysight 35651A is a signal processing module that serves as the control and data management hub for the HP 3565S signal acquisition system. It orchestrates all system operations, manages inter-module data flow, and handles measurement data transfer to host computers via HP-IB (IEEE 488). The module executes downloadable application programs, synchronizes multiple systems through external SMB connectors, and performs hardware diagnostics via RS-232.
Technical Specifications
Processing & Memory
• Motorola 56002 Digital Signal Processing (DSP) chip
• MC68020 processor at 20 MHz
• MC68881 floating-point coprocessor
• 1 Mbyte RAM standard; Option 116 extends to 16 Mbytes
• DSP RAM with 0 wait states
Performance
• FFT execution: 4.0 ms nominal (1K complex block)
• Real-time bandwidth: 51.2 kHz
• Module-to-module system bus: 2.5 Msamples/sec maximum
• Signal processing module to host: 329 kbytes/sec
• Module-to-memory throughput: 1.7 Msamples/sec
• Maximum sustained throughput: >1.3 Msamples/sec (with HP 35659A and Option AT3)
Interfaces
• HP-IB (IEEE 488): SH1, AH1, T6, TE0, L4, LE0, SR1, RL0, PP0, DC1, DT1, C4 (IEEE Std 488-1978)
• RS-232 for system diagnostics
• External SMB connectors for synchronization and triggering
– Key Features
• Direct control of data throughput to disk storage
• Multi-system synchronization and simultaneous triggering capability
• Hardware diagnostics via RS-232 port
• Manages all HP 3565S system operations and inter-module communication
– Compatibility & Integration
The 35651A integrates into the HP 3565S mainframe as a core signal processing module. It controls and coordinates all connected modules within the chassis, facilitating seamless operation of the complete signal acquisition system.
