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1401: Difference between revisions
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There appear to be two variants of the 1401A, both the manual and | There appear to be two variants of the 1401A, both the manual and | ||
catalog specify the resolution bandwidth selector as 1000, 100 and 3 kHz, | catalog specify the resolution bandwidth selector as 1000, 100 and 3 kHz, | ||
but the later versions are | but the later versions are 1000, 100, and 10 kHz. There is also a 1401A-1 | ||
which has a 75 Ω input impedance. The predecessor 1401 did not have | which has a 75 Ω input impedance. The predecessor 1401 did not have | ||
the BNC "cal output" or "cal on" pushbutton switch. | the BNC "cal output" or "cal on" pushbutton switch. | ||