LAWO crystal, User Manual, Page: 191 / 459

crystal User Manual Version: 6.6.0/2 191/459
10. Audio Mix Engine
10.5 PFL Monitoring
10.5.1 PFL / AFL Anatomy
Each source supports two independent listen buses for PFL or AFL. The first (PFL 1) is predefined and is
always available. The second (PFL 2) must be assigned from your user-defined buses (via the “
System ->
Definition -> Parameter = PFL Mode ” branch of the 'Tree Definition').
Note that sapphire , sapphire compact and Power Core support an additional three listen buses (PFL 3, 4 and
5). These can be swapped with PFL 1 on any fader strip (via the “ Fader Module -> PFL1 Swap " option). This
allows different fader strips to feed different listen bus outputs.
The PFL (or AFL) on/off is usually programed onto a fader strip MF Key. The operation will vary depending on
the
PFL Mode . One of the Central Module MF Keys is usually programed for PFL Reset . This provides a handy
way of cancelling all active PFLs across the console.
Each listen bus can feed a dedicated output, or be switched automatically to your speakers or headphones
whenever a PFL (or AFL) is active. All of these options are defined by the configuration.
10.5.2 PFL Modes
For each listen bus, the following PFL modes can be made available to the operator:
·
SUM (default mode) – multiple PFL buttons may be selected. Where faders are closed, sources are
summed onto the PFL Bus; when a fader is opened, PFL is cancelled. Where faders are open, sources
are put into ‘PFL Prepare’ and will be summed onto the PFL Bus once the fader is closed.
·
SUM R – identical to PFL Mode SUM but PFL recurs if you open the fader (cancel the PFL) and then
close the fader. In this mode, PFL is only cancelled by deselecting the PFL button.
·
PFL – identical to PFL SUM, but PFL buttons intercancel such that only one source may ever be in PFL
or PFL prepare.
·
PFL R - identical to PFL Mode PFL but PFL recurs if you open the fader (cancel the PFL) and then
close the fader. In this mode, PFL is only cancelled by deselecting the PFL button.
·
PFL A - this mode is called PFL Always and is identical to PFL Mode SUM with the exception that it
allows open faders to be put into PFL rather than PFL Prepare.
·
PFL AR - this mode is a combination of PFL Always and PFL Recurring which means that PFL is never
cancelled by opening a fader.
·
PFL PUSH – PFL is momentary. This means PFL is active when you press the PFL button, and cancels
on release.
·
PFL DJ - allows you to prepare a fader level which is applied when you put the fader on-air. Press PFL
and adjust the fader level. Then deselect PFL and press START to put the fader on-air - the fader jumps
to the prepared level. (Note that the prepared level is applied only once. So, if you take the fader off-air,
and then press START again - the fader jumps to 0dB as normal.)
·
AFL - the channel's PFL buttons operate as AFL (After Fade Listen). The channel's after-fader signal is
routed to the PFL bus. Multiple AFLs may be summed. AFL is only cancelled by deselecting the AFL
button.
·
AFL/PFL - as for AFL , but the channel's PFL signal is heard when the fader is closed; when the fader
opens, the listen bus receives AFL.