The Tektronix HFS9DG1 Data Time Generator Module is a four-channel stimulus card within the HFS9000 Stimulus System, engineered for precise timing signal and data pattern generation in high-speed digital system characterization. This module excels in testing data acquisition and communication systems, with particular strength in ECL and GaAs device characterization. Its high bandwidth and sub-250 ps rise times enable complex test scenario creation across frequency ranges from 50 kHz to 630 MHz.
Technical Specifications
Output Performance
• Level resolution: 0.01 V
• HIGH level accuracy: ±2% of level ±50 mV
• LOW level accuracy: ±2% of HIGH level ±2% of amplitude ±50 mV
• Output levels: +5.00 V (maximum HIGH) to -2.50 V (minimum LOW)
• Peak-to-peak amplitude: 0.01 V to 3.00 V
• Output transition time (20% to 80%): <250 ps (≤1 Vp-p)
• Overshoot: +15% +20 mV; Undershoot: -10% -20 mV (200 ps after 50% point)
Timing Performance
• Frequency range: 50 kHz to 630 MHz
• Frequency resolution: <0.1% of programmed value
• Frequency accuracy: ±1% of programmed value
• RMS jitter: 15 ps ±0.05% of interval
• Channel deskew range: -60 ns to 2.0 µs (1 ps resolution)
• Delay adjust range: 0 to 20 µs (1 ps resolution, 1% ±50 ps accuracy)
• Width adjust range: 0 to 65,536 × one period (1 ps resolution, 1% of width ±50 ps accuracy)
Phase Lock Input
• Frequency range: 6 MHz to 630 MHz
• Amplitude range: 0.8 V to 1.0 Vp-p
• Output frequency: Any 2n multiple or submultiple of phase lock input frequency (within installed card limits)
Trigger Input
• Input impedance: 50 Ohm
• Input voltage range: ±5 V maximum
• Programmable threshold: -4.70 V to +4.70 V (100 mV resolution, ±100 mV ±5% of level accuracy)
• Minimum pulse width: 1 ns
• Rise/fall time requirement: <10 ns
• Sensitivity: <500 mV
Interfaces & Control
• Programmability: GPIB (IEEE 488)
Physical & Environmental
• Dimensions: 51 mm W × 267 mm H × 356 mm D
• Shipping weight: 1.36 kg
• Operating temperature: 0°C to +40°C
• Non-operating temperature: -40°C to +75°C
• Humidity: up to 95% RH (10–30°C), up to 75% RH (30–40°C)
• Environmental standard: MIL-T-28800 Type III, Class 5
• Line voltage: 90–130 V AC RMS or 180–250 V AC RMS
– Key Features
• Four independent stimulus channels per card
• Sub-250 ps edge placement accuracy for precision timing control
• 1 ps resolution across deskew, delay, and width adjustment functions
• Supports complex pattern generation through edge placement manipulation
• Phase lock capability from 6 MHz to 630 MHz
• Low jitter performance (15 ps RMS) for sensitive measurements
– Typical Applications
• ECL and GaAs device characterization
• High-speed digital system stimulus and validation
• Data acquisition system testing
• Communication system signal generation
• Timing and synchronization verification
– Compatibility & Integration
Operates as a module within the HFS9000 Stimulus System. GPIB control enables integration into automated test environments. Cabinet form factor (51 mm width) supports standard rack mounting configurations.
