568

Manuals – Specifications – Links – Pictures

The Tektronix 568 is a sampling oscilloscope, introduced in 1967, which takes 3S- and 3T-series plug-ins. Although it was intended to be used for sampling, it can also be used with non-sampling plug-ins of the 3A and 3B series.

Like the 561 and 564, the 568 does not contain vertical or horizontal amplifiers. The plug-ins directly drive the deflection plates. The 568 has multi-pin connectors on its rear panel that are routed to multi-pin connectors on the plug-ins. This is to support external control and measurement using, for example, a 230 and 241. The typical cable for connecting the 568 to the 230 is the 012-0119-01.

Two sampling heads can be interfaced directly to the 568 using the 012-0130-00 cable, or multiple sampling heads can be interfaced using an multiplexer such as the 286, 287, or R288.

CRT was the T5032-2-1 (154-0454-00) or T5611-2-1 (154-0613-01).

The 568 was distributed as a self-contained instrument and also as a component of integrated test and measurement systems such as the S-3100. As a part of the test and measurement systems, the 568 was sold at least until 1986.

A modification, 708P, was available for the 568 to give it a head multiplexer instead of a CRT. Head multiplexer is similar with 286

Key Specifications

Bandwidth	sampling, DC to 14,5 GHz (with 3S2 and S-4 head, may vary with other plug-ins); realtime, DC to 15 MHz (with 3A5, may vary with other plug-ins)
Rise time	sampling, 25 ps; realtime, 24 ns
Acceleration voltage	3.5 kV
Screen Area	8 cm × 10 cm
Calibrator	0.5 V , 5 V (p-p) into 1 MΩ, 50mV, 0.5 V (p-p) into 50 Ω, selectable 1 kHz( -50 % / +100%)and 100 kHz (0.05 %), ( Serial B150629 below 20 kHz instead 100 kHz)
Screen Area	8 cm × 10 cm
Power	100/115/124/200/230/248 VAC ±10%, selected via primary voltage selector and voltage range selector switches, 48 Hz to 66 Hz; max 210 W with plug-ins
Thermal Protection	Automatic resetting thermal cutout, in case internal temperature exceeds safe operating level
Construction	Aluminum alloy chassis. Anodized front panel

Links

• Tek 568 @ museum-nt.de

Documents Referencing 568

Document	Class	Title	Authors	Year	Links
Service Scope 43 Apr 1967.pdf	Article	New From Tektronix, Inc. In 1967		1967	568 • 230 • 454 • 647A • C-40 • 1A4 • 1A5 • 3L5 • 200-1
Service Scope 53 Dec 1968.pdf	Article	Digital Systems Come Of Age	John Bowne	1968	3T5 • 3T6 • 3S5 • 3S6 • S-1 • S-2 • S-3 • S-4 • 568 • 230
Service scope dec 1968 ocr.pdf	Article	Digital Systems Come of Age	John Bowne	1968	3T5 • 3T6 • 3S5 • 3S6 • S-1 • S-2 • S-3 • S-4 • 568 • 230 • 240 • 241 • 250
Service Scope 52 Oct 1968.pdf	Article	The State of the Art in Sampling	Al Zimmerman	1968	S-1 • S-2 • S-3 • S-4 • S-50 • S-51 • 285 • 3S1 • 3S2 • 3S5 • 3S6 • 3T2 • 3T5 • 3T6 • 3T77A • 568 • 230
Tekscope 1970 V2 N4 Aug 1970.pdf	Article	Automated Measurement Systems		1970	S-3150 • 568 • 230 • S-3110 • 241 • 240
Tekscope 1971 V3 N1 Jan 1971.pdf	Article	Short Pulse Technique of Adjusting Wideband Amplifiers	Carl Battjes	1971	7A16 • 109 • 568 • 230
Tekscope 1971 V3 N5 Sep 1971.pdf	Article	The R1340 Data Coupler		1971	R1340 • 568 • 3S6 • 3T6

Pictures

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  568 front

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  230 and 568 measuring risetime

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  568 rear

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  568 top inside

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  568 bottom inside

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  568 Mod 708P front

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  568 Mod 708P head multiplexer circuitry

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  568 Mod 708P rear