The Tektronix 11A81 is a single-channel, high-speed amplifier plug-in module engineered for the Tektronix 11000 series oscilloscopes. It provides precision signal conditioning and amplification across a DC to 1 GHz bandwidth, enabling detailed waveform analysis in complex electronic design, verification, and testing environments. The module delivers fast rise time performance and low noise characteristics, making it suitable for applications demanding high-fidelity signal acquisition and measurement accuracy.
Technical Specifications
• Bandwidth: DC to 1 GHz
• Channels: 1
• Input Impedance: 50 Ohms
• Vertical Deflection Factors: 1 mV/div to 5 V/div (alternate range: 10 mV/div to 1 V/div in 1-2-5 sequence)
• Offset Range: +50 div
• Resolution: 0.25 div (coarse), 0.025 div (fine)
• Typical Noise (RMS): 0.025 div from 10 mV/div to 1 V/div
• Rise Time: Less than 130 picoseconds
• Peak Aberrations: 2% (5 div step)
• Flat Top Positioning: Minimum +5 div from center screen
– Key Features
• Fast overdrive recovery for signal integrity under high-level input conditions
• Low noise performance across the measurement range
• Coarse and fine vertical resolution controls for precise offset adjustment
• 50 Ohm impedance matching for high-frequency applications
– Typical Applications
• High-speed digital circuit characterization
• Analog signal conditioning and amplification
• Precision waveform analysis requiring sub-nanosecond rise time
• Multi-channel measurement configurations requiring synchronized acquisition
– Compatibility & Integration
The 11A81 is compatible with the Tektronix 11403A and CSA404 mainframes (CSA404 requires firmware version 3.0 or higher). It is not compatible with the 11401 oscilloscope. Up to three 11A81 modules can be deployed simultaneously within compatible mainframes to form integrated multi-channel systems. Service manuals including calibration and adjustment procedures are available for field maintenance.
