The Tektronix 11A72 is a dual-channel vertical amplifier plug-in module for Tektronix 11000-series and DSA600-series oscilloscopes. This module delivers 1 GHz bandwidth with 50 Ω input impedance (±0.5%) for high-fidelity signal acquisition across AC, DC, and OFF coupling modes. The mainframe controls all amplifier functions via front-panel channel buttons and LED indicators on the plug-in.
Technical Specifications
• Bandwidth: 1 GHz
• Input Impedance: 50 Ω ±0.5%
• Input Coupling: AC, DC, OFF
• AC Low Frequency (3 dB): 1 kHz or less from 50 Ω source
• Max Input Voltage (DC Coupled): 25 V peak or 5 V rms
• Max Input Voltage (AC Coupled): ±100 V DC additional
• Deflection Factors: 1 mV to 10 V/div (coarse, 1-2-5 steps); fine adjustments in 1% increments
• Deflection Factor Accuracy: ±(0.9% +0.01 div) with 11400 mainframe; ±(1.0% +0.02 div) with DSA600 mainframe
• DC Balance: ±0.1 div; 1 to 99.5 mV/div: ±(0.2 mV +0.10 div)
• Offset Range: ±25 div with 0.025 div resolution
• Offset Accuracy: ±(0.4% +0.01 div); 1 to 99.5 mV/div: ±(0.15% +0.4 mV)
• Typical Noise (RMS): 0.022 div (10 mV to 1 V/div); 0.087 div (1 to 1.99 mV/div); 0.04 div (2 to 4.98 mV/div)
• Overdrive Recovery: ±(0.2% +0.1 div) within 20 ns from +2 V step (1 to 99.5 mV/div)
• VSWR: ≤1.45:1 at 10 mV/div (DC to 1 GHz); <1.25:1 for ≥20 mV/div (DC to 1 GHz)
• Disconnect Threshold: 5 V RMS typical (DC to 100 MHz)
• Input Connector: BNC (50 Ω via Tekprobe)
• Weight: Approximately 5 lbs
• Dimensions: Approximately 8 x 6 x 4 inches
– Key Features
• Dual-channel architecture with independent button and LED controls
• Auto-disconnect protection when input signal exceeds safe limits; manual reset required
• Fine deflection factor tuning (1% increments) for precision measurements
• Low noise performance across all sensitivity ranges
– Compatibility & Integration
Compatible with Tektronix 11000-series and DSA600-series oscilloscope mainframes.
