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{{ | {{Instrument Sidebar | ||
|manufacturer=Tektronix | |||
summary=Digital Unit | | |series=568 | ||
image=230 operating.jpg | | |model=230 | ||
caption=Tektronix 230 front | | |summary=Digital Unit | ||
introduced=1967 | | |image=230 operating.jpg | ||
discontinued= 1979(?) | | |caption=Tektronix 230 front | ||
|introduced=1967 | |||
manuals= | |discontinued= 1979(?) | ||
* [ | |designers= | ||
|manuals= | |||
* [[Media:070-0635-00.pdf|Tektronix 230 Manual]] (earlier version, PDF) | |||
* [http://w140.com/tek_230_late.pdf Tektronix 230 Manual (later version, PDF)] | * [http://w140.com/tek_230_late.pdf Tektronix 230 Manual (later version, PDF)] | ||
* [http://w140.com/tek_readout_oscilloscopes_1968_catalog.pdf "Digital Readout Introduction" in 1968 Catalog (PDF)] | * [http://w140.com/tek_readout_oscilloscopes_1968_catalog.pdf "Digital Readout Introduction" in 1968 Catalog (PDF)] | ||
* [http://w140.com/tek_readout_oscilloscopes_1968_catalog.pdf "Digital Readout Introduction" in 1968 Catalog (PDF)] | * [http://w140.com/tek_readout_oscilloscopes_1968_catalog.pdf "Digital Readout Introduction" in 1968 Catalog (PDF)] | ||
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The '''Tektronix 230''' is a digital readout [[introduced in 1967]] for the [[568]] [[sampling oscilloscope]]. | The '''Tektronix 230''' is a digital readout [[introduced in 1967]] for the [[568]] [[sampling oscilloscope]]. | ||
The 568 and 230 replaced the [[567]] and its digital unit plug-ins, the [[6R1]] and [[6R1A]]. | The 568 and 230 replaced the [[567]] and its digital unit plug-ins, the [[6R1]] and [[6R1A]]. Unlike the 6R1 and 6R1A, the 230 is freestanding unit, not a plug-in. | ||
Unlike the 6R1 and 6R1A, the 230 is freestanding unit, not a plug-in. | Just like the 6R1A was an evolutionary step forward from the 6R1, the circuitry in the 230 is an evolutionary step forward from the 6R1A. | ||
Just like the 6R1A was an evolutionary step forward from the 6R1, | |||
the circuitry in the 230 is an evolutionary step forward from the 6R1A. | |||
The 230 was distributed by itself (usually for use with a 568) and also | The 230 was distributed by itself (usually for use with a 568) and also as a component of larger integrated test and measurement systems such as the [[S-3100]]. | ||
as a component of larger integrated test and measurement systems | |||
such as the [[S-3100]]. | |||
The 230 is programmable, which means that its circuitry can be controlled remotely, | The 230 is programmable, which means that its circuitry can be controlled remotely, using multipin connectors located on the rear panel. | ||
using multipin connectors located on the rear panel. The rear panel contains | The rear panel contains six connectors, four for remote control, one for connection to the 568 oscilloscope, and one that provides a binary-coded decimal representation of the number that is displayed on the digital readout on the 230. | ||
six connectors, four for remote control, one for connection to the 568 oscilloscope, | Like the 6R1 and 6R1A, the 230 allows upper and lower limits to be set on voltage or time, and it has front-panel lamps and rear panel signals that show whether the current measurement is below the lower limit, within the limits, or above the upper limit. | ||
and one that provides a binary-coded decimal representation of the number that is | |||
displayed on the digital readout on the 230. Like the 6R1 and 6R1A, the 230 allows | |||
upper and lower limits to be set on voltage or time, and it has front-panel lamps | |||
and rear panel signals that show whether the current measurement is below the lower | |||
limit, within the limits, or above the upper limit. | |||
The minimal system configuration with a 230 is just the 230 connected to the 568. | The minimal system configuration with a 230 is just the 230 connected to the 568. | ||
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This connection is required since it brings the sampled signal from the 568 to the 230. | This connection is required since it brings the sampled signal from the 568 to the 230. | ||
The 230 does not control the 568. | The 230 does not control the 568. | ||
The 568 sends signals and the 230 displays them on the [[Nixie tube]] readout | The 568 sends signals and the 230 displays them on the [[Nixie tube]] readout and generates control signals on its rear panel connectors. | ||
and generates control signals on its rear panel connectors. | |||
One exception to this is the CRT intensifier signal, which is sent by the 230 to the 568. | One exception to this is the CRT intensifier signal, which is sent by the 230 to the 568. | ||
This signal intensifies the trace in the various zones, | This signal intensifies the trace in the various zones, which are configured on the 230 or remotely using a [[241|241 programmer]]. | ||
which are configured on the 230 or remotely using a [[241|241 programmer]]. | |||
{{MissingSpecs}} | {{MissingSpecs}} | ||
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==Internals== | ==Internals== | ||
The 230 does not contain any tubes or [[tunnel diodes]]. | The 230 does not contain any tubes or [[tunnel diodes]]. | ||
It makes some use of integrated circuits and extensive use of | It makes some use of integrated circuits and extensive use of [http://en.wikipedia.org/wiki/Reed_relay reed relays]. | ||
[http://en.wikipedia.org/wiki/Reed_relay reed relays]. | |||
The power supply in the Tektronix 230 is linear and provides regulated of + | The power supply in the Tektronix 230 is linear and provides regulated of +50 V, +12 V, +3.8 V, +1.75 V, −3.5 V, and −50 V. It also provides a +255 V unregulated output. | ||
−3. | The power supply transformer, electrolytic capacitors, and output transistors are part of the chassis, not a removable unit. The regulator circuits are on a circuit card. | ||
capacitors, and output transistors are part of the chassis, not a removable unit. The regulator circuits are on a circuit card. | |||
Most of the circuitry of the 230 is on circuit cards that plug into a backplane bus. | Most of the circuitry of the 230 is on circuit cards that plug into a backplane bus. | ||