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7A22: Difference between revisions
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{{Plugin Sidebar| | {{Plugin Sidebar| | ||
title=Tektronix 7A22| | title=Tektronix 7A22| | ||
summary= | summary=1 MHz differential amplifier| | ||
image=tek-7a22-front.jpg | | image=tek-7a22-front.jpg | | ||
caption=7A22 front view| | caption=7A22 front view| | ||
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The 7A22 is a single channel differential vertical amplifier for the 7000 series mainframes, produced from about 1969 to 2000. Specifications and controls are similar to the [[26A2]] and the [[3A9]] from the 560 series but without current probe input or front panel signal output. | The 7A22 is a single channel differential vertical amplifier for the 7000 series mainframes, produced from about 1969 to 2000. Specifications and controls are similar to the [[26A2]] and the [[3A9]] from the 560 series but without current probe input or front panel signal output. | ||
Remarkably, the 7A22's input sensitivity reaches down to | Remarkably, the 7A22's input sensitivity reaches down to 10 μV/Div. Bandwidth is 1 MHz, the upper 3 dB limit can be reduced in ×3 steps down to 100 Hz (to eliminate noise, inter alia), and the lower bandwidth can be raised in ×10 steps from 0.1 Hz to 10 kHz. A separate control optionally supplies an internal DC voltage to offset the DC signal component. Even in the most sensitive ranges (10 μV/Div to 10 mV/Div), common-mode voltage can be ±10 V. Input resistance is 1 MΩ, but for high source resistance DC coupled measurements, one can disconnect the internal gate return resistors of the input FETs, at the disadvantage of disabling the 20 mV/div and higher ranges. | ||
Applications include audio, biological signals, etc. | Applications include audio, biological signals, etc. | ||
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==Specifications== | ==Specifications== | ||
* Bandwidth: 1 MHz, LF limit switchable DC, 0.1 Hz to 10 kHz in ×10 steps, HF limit switchable 100 Hz to 1 MHz in ×3/×10 steps | |||
* Deflection: 10 μV/Div to 10 V/Div in 1–2–5 sequence | |||
* Input impedance (either input): 1 MΩ || 47 pF | |||
* Differential signal range: | |||
**±1 V from 10 μV/Div to 10 mV/Div | |||
**±10 V from 20 mV/Div to 0.1 V/Div | |||
**±100 V from 0.2 V/Div to 1 V/Div | |||
**±1000 V from 2 V/Div to 10 V/Div | |||
* DC Offset range: | |||
**±1 V from 10 μV/Div to 10 mV/Div | |||
**±10 V from 20 mV/Div to 0.1 V/Div | |||
**±100 V from 0.2 V/Div to 1 V/Div | |||
**±1000 V from 2 V/Div to 10 V/Div | |||
* Common mode range: | |||
**±10 V from 10 μV/Div to 10 mV/Div | |||
**±100 V from 20 mV/Div to 0.1 V/Div | |||
**±500 V from 0.2 V/Div to 10 V/Div | |||
* Overdrive recovery: < 10 μs towithin 0.5% | |||
==Pictures== | ==Pictures== | ||
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[[Category:7000 series vertical plugins]] | [[Category:7000 series vertical plugins]] | ||