The Tektronix 7623 is a 100 MHz analog storage mainframe oscilloscope introduced in 1972, with the enhanced 7623A model (1975) offering improved writing speed for laboratory and signal analysis work. This instrument combines multi-trace CRT display with selectable storage modes—bi-stable, variable persistence, fast bi-stable, fast variable persistence, and save—to capture and retain transient and repetitive signals. Three plug-in compartments accept any 7-series module, enabling configuration as a general-purpose oscilloscope, logic analyzer, spectrum analyzer, or sampling scope. The 13 cm monochrome CRT features an internal 8 × 10-division graticule with variable illumination. A 3.5 ns rise time and 5 ns/div minimum sweep rate support high-speed signal acquisition. External CRT readout access allows digital annotation and time-stamping of stored waveforms—a capability uncommon among oscilloscopes of its era.
Technical Specifications
• Bandwidth: 100 MHz (with 7A11, 7A16, 7A17 amplifiers); 75 MHz (with 7A13, 7A18 amplifiers)
• Writing Speed: 135 cm/µs (7623A standard); 100 div/µs at 0.9 cm/div (standard 7623); 200 cm/µs with Option 12
• Rise Time: 3.5 ns
• Time Base: Minimum 5 ns/div; fastest calibrated sweep rate 5 ns/div
• Display: 13 cm multi-trace monochrome CRT with 8 × 10-div internal graticule (0.9 cm/div)
• Display Modes: Non Store, Store, and Save
• Storage Modes: Bi-stable, variable persistence, fast bi-stable, fast variable persistence, save mode
• Vertical Deflection: Determined by plug-in unit selection
– Key Features
• Three plug-in compartments for 7-series modules
• Multi-trace CRT readout with external access capability
• Selectable storage modes for transient and repetitive signal capture
• Variable graticule illumination for display optimization
• Dual line voltage operation: 110 V or 220 V nominal
– Typical Applications
General-purpose analog signal measurement, high-speed pulse and transient capture, logic analysis, spectrum analysis, and sampling-based oscillography.
– Compatibility & Integration
Accepts all 7-series plug-in units. Power requirements: 180 W maximum, 2.0 A at 115 V, 60 Hz. Operating temperature range: 0°C to +50°C. Three-wire power cord with three-terminal polarized plug and safety earth.
