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7A16P: Difference between revisions
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{{Plugin Sidebar 2| | {{Plugin Sidebar 2| | ||
title=Tektronix 7A16P | | title=Tektronix 7A16P | | ||
summary=150/ | summary=150/200 MHz vertical amplifier | | ||
image=Tek 7a16p.jpg | | image=Tek 7a16p.jpg | | ||
caption=7A16A | | caption=7A16A | | ||
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}} | }} | ||
The '''Tektronix 7A16P''' is a single channel, programmable, vertical amplifier for [[:Category:7000_series_digitizer_mainframes|7000-series digitizing mainframes]]. All functions of the 7A16P can be remotely programmed via the [[GPIB]] 7000-series main interface bus, with exception of the variable gain control and the probe identify switch. It is special among the 7000-series vertical amplifiers since it offers a switchable 1 MΩ/50 Ω input impedance, only paralleled by the [[7A42]]. The 7A16P is also unique as it has two input BNC connectors, but is strictly a single channel plugin. | The '''Tektronix 7A16P''' is a single channel, programmable, vertical amplifier for [[:Category:7000_series_digitizer_mainframes|7000-series digitizing mainframes]]. All functions of the 7A16P can be remotely programmed via the [[GPIB]] 7000-series main interface bus, with exception of the variable gain control and the probe identify switch. It is special among the 7000-series vertical amplifiers since it offers a switchable 1 MΩ/50 Ω input impedance, only paralleled by the [[7A42]]. The 7A16P is also unique as it has two input BNC connectors, but is strictly a single channel plugin, but having a switch that routes one of the BNC connectors to the amplifier circuits. This feature is handy in remote-controlled digitizing applications. | ||
It was mainly intended for use in the [[7612D]] and the [[7912|7912 family]], but can also be used in the [[7854]] if paired with a [[021-0374-00]] and internally modified by adding cables for a 18 pin header and setting jumpers correctly. | It was mainly intended for use in the [[7612D]] and the [[7912|7912 family]], but can also be used in the [[7854]] if paired with a [[021-0374-00]] and internally modified by adding cables for a 18 pin header and setting jumpers correctly. | ||
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==Internals== | ==Internals== | ||
The input stage of the 7A16P contains miniature relays switching between the two available input connectors and selecting the AC and DC coupling modes. Another relay is used to enter a shunt 50 Ω load if the corresponding input impedance is selected. Relays then select an optional 10x attenuator before entering the input buffer. This buffer contains an AC coupled MOSFET common drain amplifier and a DC coupled operational amplifier, creating a feed-beside scheme. Gain switching is accommodated by several junction FETs to enter another 10x attenuator in front of the MOSFET buffer, and to enter 2x and 5x low impedance attenuators after the input buffer. | |||
==Links== | ==Links== | ||