Manual

Setting up audio and syncing
Loudness Pilot English Manual (2014-10-07) 54
Sync Source
Settings: AES 1/2, AES 3/4, AES 5/6, AES 7/8,
AES 9/10, AES 11/12, AES 13/14, AES 15/16*
Use the Sync Source parameter to select the
signal source that Loudness Pilot should sync to.
Please note that channel pairs from 9/10 to 15/16
are only available as Sync Sources when you
have the optional AES 16ch license. For more
information, see “Extending your product’s ca-
pabilities with optional licenses” on page 121.
When the Clock Master parameter is set to “In-
ternal”, the Sync Source setting is irrelevant.
However, you should be aware that you can use
this parameter to pre-select a sync source that
will be used when you switch Loudness Pilot
AES directly from Internal to External Sync.
Advanced Mode section (AES)
The Advanced AES Mode section contains ad-
ditional AES-related settings.
Fig. 27.: I/O setup – AES page
(Loudness Pilot AES) with
Advanced settings activated
Advanced settings switch
To change advanced AES settings, click the Ad-
vanced button in the Advanced Mode section of
this page.
! Please note that switching off access to Ad-
vanced AES settings will reset all parameters
in this section to their default values.
Clock Master parameter
Settings: External (default), Intern. 48 kHz
Use the Clock Master parameter to set whether
Loudness Pilot should be referencing an incom-
ing external clock source or an internal crystal
running at 48kHz.
►
External reference is mandatory in a broad-
cast installation and therefore the default set-
ting.
►
Internal is typically only for test and labora-
tory use.
Clock Fallback parameter
Settings: Freewheel (default), Halt
Use the Clock Fallback parameter to set how the
internal clock of Loudness Pilot should be ap-
plied when the external sync source is not pres-
ent.
►
Freewheel: When sync is lost and the Clock
Fallback parameter is set to Freewheel, the
Loudness Pilot will continue running on the
“last good rate”. If possible, Loudness Pilot
will run on a 96 bit precision version of the
last good sample rate that the Loudness Pilot
received. This will only generate few sample
slips downstream and on the inputs (which
may still receive audio) so the audio quality
is not significantly reduced. In some border-
line cases it may not be possible to calculate
the last good incoming sample rate. In such
a situation, the Loudness Pilot will revert to
the internal 48 kHz clock and audio will still
be sent through. Expect more sample slips in
such a situation.