HP / Agilent 54657A GPIB Measurement Storage Module

The HP/Agilent 54657A GPIB Measurement Storage Module expands the measurement and data storage capabilities of Agilent 54600-series oscilloscopes. This interface module integrates advanced signal analysis, automated measurement functions, nonvolatile trace memory, and remote GPIB programmability to enable unattended waveform monitoring and mask-based automated testing.

## Technical Specifications

**Measurement Functions**
• FFT analysis for frequency-domain signal characterization
• Five automatic measurements: amplitude, preshoot, overshoot, delay, and phase angle
• User-defined measurement thresholds at 10%/90%, 20%/80%, or custom voltage levels
• Two additional cursor measurement sources via math functions 1 and 2

**Waveform Processing**
Supports addition, subtraction, multiplication, differentiation, integration, and FFT mathematical operations on acquired signals.

**Data Storage and Management**
Up to 100 traces in nonvolatile memory: three uncompressed trace memories plus 64 KB of compressed nonvolatile storage accommodating up to 97 additional traces. Each stored trace includes time and date tagging for traceability.

**Unattended Monitoring**
Automask feature generates mask templates from waveform data with variable tolerance settings. Pixel-by-pixel mask editing and line-drawing tools enable precise mask definition. Out-of-limit trace storage and failure zone indication identify signal violations against the mask template.

**Interfaces and Control**
GPIB connectivity enables full remote programming and unattended oscilloscope operation. Hardcopy output functionality and integrated real-time clock support comprehensive data documentation.

## Key Features

• Compact form factor for instrument rack integration
• Automatic mask generation and manual editing capabilities
• Out-of-limit trace capture for failure analysis
• Time and date stamping of waveform records
• Three independent nonvolatile trace storage banks

## Typical Applications

• Automated compliance testing with mask-based pass/fail criteria
• Unattended signal monitoring and anomaly capture
• Frequency-domain analysis via FFT on stored waveforms
• Remote oscilloscope operation via GPIB from external test systems

## Compatibility & Integration

Compatible with all Agilent 54600-series oscilloscopes except 54600A, 54601A, and 54602A models running operating system versions below 2.2. Part of the Agilent 54600 Series Interface Modules family.