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129: Difference between revisions
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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. There are two varieties of output circuit card: active (cathode-follower) and passive. | 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. | 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 uses 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 -12.2V regulated supply. This one | |||
uses bipolar transistors for the feedback amplifier and output device. The -12.2V supply is independently fused. The other supplies are | |||
not independently fused. The 129 has a 6.25A fuse on the primary of the mains transformer. | |||
* [http://bama.edebris.com/download/tek/129/Tek%20129.pdf Tektronix 129 Manual (PDF)] | * [http://bama.edebris.com/download/tek/129/Tek%20129.pdf Tektronix 129 Manual (PDF)] | ||