468

Manuals – Specifications – Links – Pictures

The Tektronix 468 is a digital/analog scope, essentially a 465B with an added 25 MS/s 8 bit digitizer. The 468 uses the 154-0731-00 CRT.

The 468 is controlled by an Intel 8085A processor.

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
Power	90–210 V, 108–132 V, 198–242 V or 216–250 V; 48–440 Hz
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 − (Not sure yet - seen on a scope - Opt 4 on a 465B is EMI shielding) Opt.05 − TV Sync Separator (A29 board) Opt.11 − Analog X-Y/Plotter Output (A27 board) Opt.A2 − (Not sure yet - probably variant GPIB - seen on a 468 scope)

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

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

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  Timebase/Power Supply A22

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  Timebase Oscillator A22

CRTs used in the 468

Custom ICs used in the 468