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DC505A: Difference between revisions
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==Internals== | ==Internals== | ||
The manual warns that if multiple 505As with serial numbers B010630 are installed in a mainframe, the mainframe needs | The manual warns that if multiple 505As with serial numbers B010630 and above are installed in low-power compartments of a TM500 mainframe, | ||
the mainframe needs to be modified to allow for the extra current draw. | |||
The required modifications are described in the DC505A manual. | |||
An internal VCO, phase-locked to the 1 MHz master, produces a 100 MHz input to the counter chain for timing measurements. | An internal VCO, phase-locked to the 1 MHz master, produces a 100 MHz input to the counter chain for timing measurements. | ||