US Utah-400, Настройка и эксплуатация, Страница: 102 / 157

Utah-400 Components
4-36
Utah-400 Components
DAC Output Module
This circuit module, USI 121041-1, is an alternate output module for the Utah-400 digital audio
router that delivers analog output signals. Like the 121040-1 deluxe output module, it has the
capability to modify the characteristics of the eight AES-formatted digital audio input signals
that it converts.
FIGURE 4-31.
DAC Output Module
These capabilities include the following:
•
Execution of a V-fade that ensures clickless synchronous switching of output.
•
Execution of analog channel data manipulations within each AES signal pair:
•
Automatic adjustment to input word lengths of 16 to 24 bits.
•
Addition of dither to output signals at user discretion.
These capabilities are accessed by control and status monitoring via embedded JTAG control
structures included in the Utah-400 router platform.
Further, these operations are performed in concert with the channel status (C-bit) indications
at the AES inputs, with outputs set appropriately, according to parameters from inputs and
commanded functions.