Tektronix HFS9DG1 Data Time Generator Module

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

• 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.