The Tektronix 11401 is a 500 MHz digitizing oscilloscope built on a modular mainframe architecture that accepts up to three 11000-series plug-in modules. This configuration enables acquisition of up to 12 channels with flexible bandwidth options, while the display simultaneously renders up to eight traces. The instrument delivers 10-bit vertical resolution per sample using a two-stage pipelined ADC, expandable to 14 bits through signal averaging.
Technical Specifications
Bandwidth & Sampling
• System bandwidth: 500 MHz
• Equivalent-time sampling: 20 MHz (20 MSps)
• Vertical resolution: 10 bits standard; 14 bits with averaging
• Acquisition memory: Multiple 10,240-point waveform records
• Display memory: 512 points (via Waveform Compressor board)
Channels
• Maximum channel capacity: 12 across three plug-in bays
• Simultaneous display traces: up to 8
• Plug-in examples: 11A52 (500 MHz, 50 Ω input), 11A34 (four channels, 300 MHz), 11A32 (two channels, 300 MHz)
Input Impedance
• Mainframe: 1 MΩ
• 11A52 plug-in: 50 Ω only
Triggering
• Single-shot A→B measurements: 200 ps resolution
• Averaged measurements: 10 ps resolution
– Key Features
Advanced trigger capabilities capture complex signal events in digital systems. The two-stage pipelined ADC (Tektronix part 155-0289-01) features 32 comparators per stage for precise analog conversion.
– Compatibility & Integration
Fully programmable via IEEE-488 (GPIB) and RS-232-C interfaces for automated test environments. Accepts all 11000-series plug-in modules, enabling custom channel and bandwidth configurations matched to specific measurement requirements.
Physical
• Weight: approximately 16 lbs
• Compact form factor for bench and rack integration
