Analog Recording; Analog Inputs - RME Audio Hammerfall HDSP 9632 User Manual

8.8 Recording analog
For recordings via the analog inputs the corresponding record device has to be chosen (HDSP
Analog (x+x)). The desired sample rate has to be set within the recording software.
The input sensitivity of the analog input(s) can be changed via the Settings dialog, to meet the
most often used studio levels, see next section.

8.9 Analog Inputs

The HDSP 9632 provides unbalanced phono line inputs. The optional analog XLR breakout
cable turns the inputs into fully balanced ones via its XLR connectors.
The electronic input stage is built in a servo balanced design which handles unbalanced (mono
jacks) and balanced (stereo jacks) correctly, automatically adjusting the level reference.
When using unbalanced cables with the XLR breakout cable: be sure to connect the 'ring'
contact of a stereo TRS jack, and pin 3 of a XLR jack, to ground. Otherwise noise may
occur, caused by the unconnected negative input of the balanced input.
One of the main issues when working with an AD-converter is to maintain the full dynamic
range within the best operating level. Therefore the HDSP 9632 internally uses hi-quality
electronic switches, which allow for a perfect adaptation of all inputs to the three most often
used studio levels.
The 'standardized' studio levels do not result in a (often desired) full scale level, but take some
additional digital headroom into consideration. The amount of headroom is different in different
standards, and again differently implemented by different manufacturers. Because of this we
decided to define the levels of the HDSP 9632 in a most compatible way.
Reference
Lo Gain
+4 dBu
-10 dBV
With +4 dBu selected, the according headroom meets the latest EBU recommendations for
Broadcast usage. At -10 dBV 12 to 15 dB headroom are common practice, each mixing desk
operating at -10 dBV is able to send and receive much higher levels. Lo Gain allows to work
with high levels, best suited for professional users who prefer to work balanced and at highest
levels.
The above levels are also found in our ADI-8 series of AD/DA converters, the Multiface, and
even in our Mic-Preamps QuadMic and OctaMic. Therefore all RME devices are fully
compatible to each other.
0 dBFS @
+19 dBu
+13 dBu
+2 dBV
User's Guide Hammerfall DSP 9632 © RME
Headroom
15 dB
9 dB
12 dB
15