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11A32: Difference between revisions
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The attenuator module output feeds the + input of the [[M377]] amplifier IC through a (blue) 50 ohm transmission line, one per input channel. The cable lengths set a standard delay per plugin. | The attenuator module output feeds the + input of the [[M377]] amplifier IC through a (blue) 50 ohm transmission line, one per input channel. The cable lengths set a standard delay per plugin. | ||
The M377's | The M377's − input is connected to the [[ACVS]] (Analog Control Voltage System) output. | ||
The (differential) display outputs of the two amplifiers are hard-wired in parallel and drive the mainframe’s | The (differential) display outputs of the two amplifiers are hard-wired in parallel and drive the mainframe’s | ||
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The version of the M377 used in the 11A32 has a 100 Ω output impedance per side so that two of them in parallel | The version of the M377 used in the 11A32 has a 100 Ω output impedance per side so that two of them in parallel | ||
create a source impedance of 50 Ω. | create a source impedance of 50 Ω per side. | ||
Each M377 amplifier's nominal common-mode output voltage is zero whether enabled or not. When not enabled, each M377 | Each M377 amplifier's nominal common-mode output voltage is zero whether enabled or not. When not enabled, each M377 | ||