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FM-531HD / May 2013
F M - 5 3 1 H D G U R U G U I
Input Menu
This is the first tab on the top far left of the GUI, noting that the screen that is cur
-
rently being displayed is indicated by a red background on the selected tab.
The
Input Configuration
screen shown above contains controls for the Input Audio
Source
,
Automatic Input Failover
,
Analog Gain and Digital Gain, and L/R Balance
controls.
Input Source
The Input Source can be selected as either Analog
, which is the analog Left/Right
input, or
Digital
, which can be
either AES3 or WheatNet-IP. The currently selected
input choice is shown by a red check mark inside the blue choice box.
Audio Input Signal Presence Indicators
Below the source selection check boxes are a pair of signal presence
indicators for each input. The Analog indicator lights if there is a signal
present and the analog input exceeds ‑48dBFS. The
Digital indicator
lights if there is a valid AES signal present at the digital input above
‑48dBFS. In this example, Digital is the active input (green indicator).
Automatic Input Failover
In the event the currently selected input source fails and the Automatic Input Failover
check box is checked, an alternate source of audio connected to the other input can
automatically be put on the air.
If the primary source was Digital the Analog input will be selected immediately if
invalid bits occur in the digital bitstream or after 30 seconds with an audio signal level
below ‑48dBFS.
If the primary source was Analog, then a timeout of 30 seconds must elapse before
the unit switches to the AES/EBU input in an attempt to restore audio. The audio failure
sense threshold is fixed at ‑48dBFS, and this in combination with the 30 second timeout,
is suitable for virtually all program types.
Automatic Failover is between Analog and Digital sources only – failover be-
tween digital input sources (AES3 and WheatNet-IP) is not supported.
Summary of Contents for FM-531 HD
Page 2: ...Technical Manual Wheatstone Corporation May 2013 FM HD Digital Audio Processor FM 531hd...
Page 122: ...page A 2 FM 531HD May 2013 A P P E N D I C E S Appendix A General Specifications A 3 Contents...
Page 128: ...page A 8 FM 531HD May 2013 A P P E N D I C E S Appendix B FM 531HD GPI Interface A 9 Contents...