PreSonus FireStudio Lightpipe - Manual (Page 30)

CONTROLS & CONNECTIONS
27 | PreSonus 2008
3.2 FRONT PANEL LAYOUT
 LED Meters/Clip Indicator. Each channel features four LED level indicators. The green LEDs will light
up when your input signal reaches -40 dBFS and -18 dBFS respectively. The yellow LED will light up
when the channel’s input signal reaches -6 dBFS (+4 dBu). The red clip indicator LED will illuminate
when the channel’s input signal reaches 0 dBFS. At this level, the mic preamp/line trim signal of your
external A/D will exhibit signs of clipping, and undesirable type of distortion. Do not allow your
converters to clip.
 Main. The Main knob controls the output level for the main outputs on the back of the FireStudio
Lightpipe and have a range of -80 dB to +10 dB.
 Phones. The Phones knob controls the output level of the headphone output on the front of the unit.
Notice that the volume indicator goes to 11; use this setting with extreme caution.
 ¼” Headphone Jack. This is where you connect your headphones to the FireStudio Lightpipe.
 Power button. This button turns your FireStudio Lightpipe on and off. The button will illuminate blue
when the unit is powered on.
 FireWire Sync Light. This indicator lets you know whether your unit is communicating properly with
your computer.
o
Blue. FireStudio Lightpipe is correctly synced via FireWire.
o
Flashing Blue . Sync invalid or not present.
 External Sync Indicators. The FireStudio Lightpipe has two external clock-source (sync) indicators on
the front panel to let you know at glance if your FireStudio Lightpipe is receiving a stable sync source
from either BNC or ADAT. If you assign an external clock source in the FireStudio Lightpipe Mixer
application, these lights will tell you if your unit is receiving word clock correctly. Word clock is the
manner by
which digital devices sync frame rates. Proper word-clock sync prevents digital devices from
having pops, clicks, or distortion in the audio signal due to mismatched digital audio transmission.
o
Blue. FireStudio Lightpipe is correctly synced via BNC or ADAT.
o
Flashing Blue . Sync invalid or not present.