Analog Outputs; Line; Headphones / Line Out - RME Audio Fireface UCX User Manual

22. Analog Outputs

22.1 Line

The short circuit protected, low impedance line outputs of channels 1 to 6 are available as 1/4"
TRS jacks on the back of the unit. The electronic output stage is built in a servo balanced de-
sign which handles unbalanced (mono jacks) and balanced (stereo jacks) correctly.
To maintain an optimum level for devices connected to the analog outputs, the Fireface UCX
internally uses hi-quality electronic switches, which allow for a perfect adaptation of all outputs
to the three most often used studio levels.
As with the analog inputs, the analog output levels are defined to maintain a problem-free op-
eration with most other devices. The headroom of the Fireface UCX lies between 9 and 15 dB,
according to the chosen reference level:
Reference
Hi Gain
+4 dBu
-10 dBV
The above levels are also found in all other RME devices. Therefore they are fully compatible to
each other.

22.2 Headphones / Line Out

Channels 7/8 of the Fireface are available on the front via one 1/4" unbalanced TRS jack (ste-
reo output). These channels use the same converters as the other line outputs, therefore offer
the same technical specifications.
These outputs are special low impedance types, ready to be used with headphones. They can
also be used as high-quality - yet unbalanced - line outputs. To optimize this stereo output for
monitoring purposes, outputs 7/8 have their own 3-stage hardware-based reference level cir-
cuitry, independent form the setting of channels 1 to 6, providing perfect pre-adjustment for the
connected monitor speakers. The main volume control is then performed via TotalMix, either at
the computer or directly at the unit (rotary encoder, PH).
In case the output should operate as line out-
put, an adapter TRS plug to RCA phono
plugs, or TRS plug to TS plugs is required.
The pin assignment follows international stan-
dards. The left channel is connected to the tip,
the right channel to the ring of the TRS
jack/plug.
40
0 dBFS @
+19 dBu
+13 dBu
+2 dBV
User's Guide Fireface UCX © RME
Headroom
15 dB
9 dB
12 dB