468

Manuals – Specifications – Links – Pictures

The Tektronix 468 is a digital/analog scope, essentially a 465B with a 25 MS/s, 8-bit digitizer added.

The 468 is controlled by an Intel 8085A processor.

From Tekscope V12 N3 1980:

The program manager for the 468 is Luis Navarro. Tom Dagostino, project engineer up to design completion, designed the display system and scope interface. The author (Bruce Blair) became project engineer after design completion and also had design responsibility for the acquisition system and GPIB. The microprocessor system is the work of Dave Olsen, firmware project leader; Karen Walker assisted in firmware design. Len McCracken did the mechanical design.

Key Specifications

Bandwidth	100 MHz analog, 10 MHz digital repetitive, 2.5 MHz digital single-shot
Deflection	5 mV/Div to 5 V/Div, 1–2–5; CH1-CH2 cascaded – 1 mV/Div, 50 MHz
Sweep	20 ns/Div to 50 ms/Div (B) or 500 ms/Div (A), 1–2–5, ×10 magnifier to 2 ns/Div
Sampling rate	25 MS/s
Resolution	8 bit
Input impedance	1 MΩ // 20 pF
Z Axis	5 Vp-p (max. 25 V DC+peak AC) into 25 kΩ (down to 200 Ω at 2 MHz and above), 50 MHz
CRT	154-0731-00, 8×10 cm², P31 phosphor, 18.5 kV acceleration (–2.45 kV / +16 kV)
Power	90–210 V, 108–132 V, 198–242 V or 216–250 V; 48–440 Hz; 115 W/140 VA, max. 150 W/190 VA
Dimensions	18.3 cm × 29.2 cm × 55 cm (H×W×D)
Weight	15 kg (33 lb)

Options

• Opt.02 − GPIB (A17 board)
• Opt.04 − EMI shielding
• Opt.05 − TV Sync Separator (A29 board)
• Opt.11 − Analog X-Y/Plotter Output (A27 board)
• Opt.12 − Averaging - Standard on SN B032430 and up

Repair issues

→ see 468/Repairs page

Links

• Tektronix 468 Repair Vol.1 / Vol.2 / HV multiplier/CRT replacement by vintageTek Museum @ YouTube
• Tektronix 468 @ amplifier.cd

Documents Referencing 468

Document	Class	Title	Authors	Year	Links
Tekscope 1980 V12 N2.pdf	Article	New Products		1980	7854 • 468 • AA501 • SG505 • CG551AP • 1900 • 7612D
Tekscope 1980 V12 N3.pdf	Article	100 MHz Portable Oscilloscope Packs Digital Storage Power	Bruce Blair	1980	468

Patents that may apply to 468

Page	Title	Inventors	Filing date	Grant date	Links
Patent US 4301360A	Time interval meter	Bruce W. Blair	1979-10-25	1981-11-17	468

Pictures

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  front

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  top and A16

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  Storage & Display A16

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  right Trigger A12

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  left V Preamp A11

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  bottom Interface Board A15

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  rear

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  Processor Board Set

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  Microprocessor Board A21

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  Memory Board A18 (TRW part on the right is the TDC1007 A/D converter)

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  Timebase/Power Supply A22

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  Timebase Oscillator A22

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  A17 GPIB OPT A2