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7A22: Difference between revisions
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no longer in catalogs after 1992
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(no longer in catalogs after 1992) |
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years=1969 – 2000 | | years=1969 – 2000 | | ||
introduced=1969 | | introduced=1969 | | ||
discontinued= | discontinued=1991 | | ||
series=[[7000-series scopes]]| | series=[[7000-series scopes]]| | ||
manuals= | manuals= | ||
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* [[Media:TM-11-6625-2749-14&P.pdf| TM-11-6625-2749-14&P - 7A22 military manual]] (8MB, PDF) | * [[Media:TM-11-6625-2749-14&P.pdf| TM-11-6625-2749-14&P - 7A22 military manual]] (8MB, PDF) | ||
}} | }} | ||
The '''Textronix 7A22''' is a single channel differential vertical amplifier for the [[7000-series scopes|7000 series mainframes]], produced from about 1969 to | The '''Textronix 7A22''' is a single channel differential vertical amplifier for the [[7000-series scopes|7000 series mainframes]], produced from about 1969 to 1991. 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 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. | 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. | ||