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{{Oscilloscope Sidebar | | {{Oscilloscope Sidebar | ||
|manufacturer=Tektronix | |||
summary=CRT Indicator Unit | | |series=160 | ||
image=Tek 360 front.jpg | | |model=360 | ||
caption=Tektronix 360 front view | | |summary=CRT Indicator Unit | ||
introduced=1954 | | |image=Tek 360 front.jpg | ||
discontinued=1973 | | |caption=Tektronix 360 front view | ||
manuals= | |introduced=1954 | ||
[ | |discontinued=1973 | ||
|designers= | |||
|manuals= | |||
* [[Media:070-220.pdf|Tektronix 160 Series Manual]] (PDF) | |||
* [https://w140.com/tek_360_160_irb.pdf Tektronix 160-series Instrument Reference Book (PDF, OCR, 210MB!)] | |||
* [[Media:Tek 360 fcp.pdf|Tektroni 360 Factory Calibration Procedure (PDF, OCR)]] | |||
}} | }} | ||
The '''Tektronix Type 360''' is the "indicator unit" of the [[160|160 series modular scope system]]. | |||
It contains a [[3WP]] CRT ([[T3100]] for SN > 25767), vertical amplifier, horizontal amplifier, and HV CRT circuit. | |||
It does not contain the low-voltage power supply, which is a separate component in the 160 system. | |||
==Internals== | |||
===Vertical Signal Path=== | |||
==Vertical Signal Path== | |||
The vertical signal path starts with a switched compensated attenuator, followed by | The vertical signal path starts with a switched compensated attenuator, followed by | ||
a [[6AU6]] differential amplifier stage, followed by a second 6AU6 | a [[6AU6]] differential amplifier stage, followed by a second 6AU6 | ||
differential stage. | differential stage. | ||
==Horizontal Signal Path== | ===Horizontal Signal Path=== | ||
The horizontal amplifier uses a [[6AN8]] common-cathode | The horizontal amplifier uses a [[6AN8]] common-cathode | ||
gain stage followed by a 6AU6 common-cathode amplifier as a phase splitter | gain stage followed by a 6AU6 common-cathode amplifier as a phase splitter | ||
to differentially drive the CRT horizontal deflection plates. | to differentially drive the CRT horizontal deflection plates. | ||
==CRT Circuit== | ===CRT Circuit=== | ||
The CRT circuit in the Type 360 uses a [[6AQ5]]-based power oscillator | The CRT circuit in the Type 360 uses a [[6AQ5]]-based power oscillator | ||
to drive two [[5642]] high-voltage rectifier tubes, one for the CRT grid | to drive two [[5642]] high-voltage rectifier tubes, one for the CRT grid | ||
voltage, and one for the CRT cathode voltage. The high-voltage regulator | voltage, and one for the CRT cathode voltage. The high-voltage regulator | ||
feedback amplifier is made from two cascaded common-cathode amplifiers, | feedback amplifier is made from two cascaded common-cathode amplifiers, | ||
each made from one half of a [[12AT7]] dual triode. | each made from one half of a [[12AT7]] dual triode.A high voltage | ||
isolation transformer (1:1) is used to power the CRT filament from the | |||
main 6.3V heater line. | |||
==Mechanical== | |||
===Mechanical=== | |||
Open-frame construction allows the 360 to operate without fan cooling. | Open-frame construction allows the 360 to operate without fan cooling. | ||
360s with SN < 1000 were made using printed circuit boards, later SN are made | |||
using the ceramic wiring strip style that is more typical of | using the ceramic wiring strip style that is more typical of the 1950s | ||
and | and 1960s Tektronix construction. | ||
==Pictures== | ==Pictures== | ||
<gallery> | <gallery> | ||
Tek 360 front.jpg|360 front view | |||
Tek_360_Trace1.jpeg | 360 Trace | |||
Tek 360 rear.jpg|The BNC connectors are a modification. | |||
Tek 360 left.jpg | |||
Tek 360 right.jpg | |||
Tek_360-LHS.jpeg | LHS | |||
Tek_360-LHS1.jpeg| LHS, HV Cover off | |||
Tek_360-RHS.jpeg | RHS | |||
Tek_360-RHS1.jpeg| RHS, HV Cover off | |||
Tek_360-Top.jpeg | Top | |||
Tek 360-amplifiers.png|Amplifiers schematic | |||
Tek 360-crt circuit.png|CRT circuit | |||
</gallery> | </gallery> | ||
{{Parts|360}} | |||
[[Category:160 system]] | [[Category:160 system]] | ||