dScope Series III Architecture Guide

ANALOGUE OUTPUT CONDITIONING ARCHITECTURE

The figure above illustrates the functionality of the dScope's Analogue Output conditioning circuits.

The appropriate gain and attenuator settings are selected automatically according to the amplitude setting of the analogue signal generators, as set in the Signal Generator dialogue box. The remaining settings (mute, common-mode test, unbalanced/balanced and output impedance) are controlled through the Analogue Outputs dialogue box shown below.

NOTE

The outer conductors of the Analogue Output BNC connectors are connected to the inverting leg of the balanced output circuit (i.e. to pin 3 of the associated XLR) and not to chassis or signal ground (although the Analogue Outputs can be switched into this mode).

The Analogue Output sample rate can be switched between 48kHz and 192kHz. In the current software versions, the Analogue Input ADC and the Analogue Output DAC share the same sample clock, so switching the rate of the ADC also controls the rate of the DAC.