Huron & SNAP Documentation

Viewing Digital Input Status
↓ To view the status of a digital
input
THE SYSTEM TOOLS
1. Check the colour of the digital input status LED. It will be
green when no input errors are detected, yellow when nonfatal
input errors are detected and red when fatal errors are
detected.
2. Click the LED to activate a status window.
Figure 17 — Digital input status
Lake Technology’s software reports nine error conditions that
may occur on digital input channels.
Error Reported Description
No Error The digital input system is not producing any errors.
Validity bit high The input is working, but audio input is not being
generated (eg. Pause or Stop has been pressed on the
input device).
Confidence lag The input signal has a high rate of noise, or is not of
good quality.
Slipped Sample An uncompensated difference in the sampling rates of
the input device and the DSP machine are causing loss
or duplication of samples.
CRC error Professional inputs only - a CRC error has been
detected in the channel status signal.
Parity Error Parity checking has returned an error.
Bi-Phase coding A signal is being produced on the input, but it does not
have the correct format.
No PLL Lock The line is receiving no signal whatsoever.
Unknown error Error condition unknown.
Setting Digital Output Format
Some digital outputs can be encoded by Lake equipment in
either a professional or consumer format. Each format uses
different codes for the channel status bits placed in the digital
output stream. The digital output from the Lake system should
thus be set in accordance to the format of the equipment
accepting the digital output.
HURON TECHNICAL MANUAL PAGE 60