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[[File:Tek_129_front.jpg|thumb|300px|right|Tektronix 129]]
{{Instrument Sidebar
|manufacturer=Tektronix
|model=129
|class=Mainframe
|series=560-series scopes
|summary=Plugin power supply
|image=Tek_129_front.jpg
|caption=Tek 129 Front
|introduced=1964
|discontinued=(?)
|designers=
|manuals=
* [[Media:070-409.pdf | Tektronix 129 Manual (PDF)]]
* [[Media:Tek 129 1968 catalog.pdf | Tektronix 129 in 1968 Catalog (PDF)]]
* [[Media:Tek 129 training.pdf|Tektronix 129 Training Manual (PDF)]]
}}
The '''Tektronix 129''' is an enclosure and power supply allowing up to four [[560-series scopes|560-series]] plug-ins to be used as freestanding instruments.
The '''Tektronix 129''' is an enclosure and power supply allowing up to four [[560-series scopes|560-series]] plug-ins to be used as freestanding instruments.
The 129 has a fan and a 150 °F (65 °C) [[thermal cutoff]].   
The 129 has a fan and a 150 °F (65 °C) [[thermal cutoff]].   


Each plug-in bay in the 129 has an output circuit card.  The deflection signal output on pins 17 and 21 of the plug-in
Each plug-in bay in the 129 has an output circuit card.  The deflection signal output on pins 17 and 21 of the plug-in drive the output circuit card.   
drive the output circuit card.  There are two varieties of output circuit card: active (cathode-follower) and passive.
There are two varieties of output circuit card: active (cathode-follower) and passive.
To use [[sampling oscilloscope|sampling]] plug-ins in the 129, active output circuit cards are required.
To use [[sampling oscilloscope|sampling]] plug-ins in the 129, active output circuit cards are required.


The power supply of the 129 is linear and consists of a power transformer followed by silicon rectifiers, electrolytic
The power supply of the 129 is linear and consists of a power transformer followed by silicon rectifiers, electrolytic capacitors, and then regulators.   
capacitors, and then regulators.  Not all of the supply voltages are regulated.  A [[ZZ1000]] tube is used as the voltage reference.
Not all of the supply voltages are regulated.  A [[ZZ1000]] tube is used as the voltage reference.  
The regulators (feedback amplifiers and output tubes) are all tube, except for the high-current −12.2 V regulated supply.  This one
The regulators (feedback amplifiers and output tubes) are all tube, except for the high-current −12.2 V regulated supply.   
uses bipolar transistors for the feedback amplifier and output device.  The −12.2 V supply is independently fused.  The other supplies are
This one uses bipolar transistors for the feedback amplifier and output device.  The −12.2 V supply is independently fused.   
not independently fused.  The 129 has a 6.25 A fuse on the primary of the mains transformer.
The other supplies are not independently fused.  The 129 has a 6.25 A fuse on the primary of the mains transformer.
 
==Links==
* [[Media:070-409.pdf | Tektronix 129 Manual (PDF)]]
* [[Media:Tek 129 1968 catalog.pdf | Tektronix 129 in 1968 Catalog (PDF)]]
* [[Media:Tek 129 training.pdf|Tektronix 129 Training Manual (PDF)]]


==Pictures==
==Pictures==
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Tek 129 rear.jpg
Tek 129 rear.jpg
Tek_129.jpg
Tek_129.jpg
Tek 129 dimensional.png|Dimensional drawing
Tek 129 dimensional.png | Dimensional Drawing
Tek 129 interconnecting sockets.png|Interconnecting sockets
Tek 129 interconnecting sockets.png | Interconnecting Sockets
Tek 129 power supply.png|Power supply
Tek 129 power supply.png | Power Supply
Tek 129 passive circuit card.png|Passive circuit card
Tek 129 passive circuit card.png | Passive Circuit Card
Tek 129 cathode follower card.png|Cathode follower card
Tek 129 cathode follower card.png | Cathode Follower Card
Tek 129 output and monitor circuit.png|Output and monitor circuit
Tek 129 output and monitor circuit.png | Output & Monitor Circuit
</gallery>
</gallery>



Latest revision as of 10:11, 28 September 2023

Tektronix 129
Plugin power supply
Tek 129 Front

Produced from 1964 to (?)

Manuals
Manuals – Specifications – Links – Pictures

The Tektronix 129 is an enclosure and power supply allowing up to four 560-series plug-ins to be used as freestanding instruments. The 129 has a fan and a 150 °F (65 °C) thermal cutoff.

Each plug-in bay in the 129 has an output circuit card. The deflection signal output on pins 17 and 21 of the plug-in drive the output circuit card. There are two varieties of output circuit card: active (cathode-follower) and passive. To use sampling plug-ins in the 129, active output circuit cards are required.

The power supply of the 129 is linear and consists of a power transformer followed by silicon rectifiers, electrolytic capacitors, and then regulators. Not all of the supply voltages are regulated. A ZZ1000 tube is used as the voltage reference. The regulators (feedback amplifiers and output tubes) are all tube, except for the high-current −12.2 V regulated supply. This one uses bipolar transistors for the feedback amplifier and output device. The −12.2 V supply is independently fused. The other supplies are not independently fused. The 129 has a 6.25 A fuse on the primary of the mains transformer.

Pictures