The HP/Agilent 54659B RS-232 & Parallel Measurement Storage Module expands the analytical capabilities of compatible HP/Agilent 54600-series and 54645A/D oscilloscopes through dual-interface data transfer and comprehensive waveform storage. This plug-in module adds five automatic measurements, advanced math functions including FFT analysis, and non-volatile trace memory with mask-based monitoring for unattended signal acquisition and compliance testing.
## Technical Specifications
**Memory & Storage**
• Non-volatile trace memory: up to 100 traces
• Extended storage: 64K non-volatile memory with data compression supporting up to 97 additional trace memories
• Real-time clock with battery back-up for time and date tagging
• NVRAM retention: over 10 years
**Interfaces**
• RS-232-C
• Parallel
• Module connector: 9-pin
**Measurements**
• Three automatic voltage measurements: amplitude, preshoot, overshoot
• Two automatic time measurements: delay, phase angle
• Two cursor voltage measurements: absolute and percent-based
• Two cursor time measurements: absolute and degree-based
• Adjustable measurement thresholds at 10%/90%, 20%/80%, or user-selected voltage levels
**Waveform Analysis**
• Math functions: addition, subtraction, multiplication, differentiation, integration, FFT
• FFT sample points: 1024
• FFT windows: Exponential, Flat Top, Hanning, Rectangular
• Cursor measurement sources include math function 1 and 2
**Monitoring & Masking**
• Automatic mask generation and editing
• Mask-based unattended monitoring with failure zone indication
• Selectable failure modes: stop on failure or continue with logging
• Out-of-limit trace storage or printable failure reports
**Hardcopy Output**
• Printer support: HP ThinkJet, HP QuietJet, HP PaintJet, HP DeskJet, HP LaserJet, Epson FX-80 compatible models
• HP-GL compatible plotter support
**Physical**
• Dimensions: 172 mm H × 322 mm W × 317 mm D (6.8 in × 12.7 in × 12.5 in)
• Weight: 6.2 kg (14 lbs)
## Key Features
• Dual RS-232 and parallel connectivity for flexible instrument integration
• Frequency-domain analysis via 1024-point FFT with four selectable window functions
• Real-time clock with battery back-up ensures temporal accuracy across power cycles
• Mask templating for production testing and signal compliance verification
• Five additional measurement parameters beyond base oscilloscope functionality
## Typical Applications
• Unattended production testing and go/no-go mask validation
• Out-of-spec event capture and automated failure logging
• Frequency-domain signal characterization via FFT analysis
• Multi-trace waveform archival with time-stamped hardcopy documentation
## Compatibility & Integration
Module operates with HP/Agilent 54600-series oscilloscopes and Agilent 54645A/D models. Compatible with Agilent 54620A/C logic analyzers for input/output operations only. Integrates with legacy HP printer and plotter infrastructure via RS-232 and parallel interfaces.
