User’s Guide HDSP System RPM
© RME
18
State
This display shows the current
sample rate and state of the I/O-
box:
Error
: I/O-box not connected or
missing power
Detected
: The interface has found
an I/O-box and tries to load the
firmware
Connected
: Communication
between interface and I/O-box
operates correctly
Disconnected
: Communication
between interface and I/O-box has
been interrupted, I/O-box
continues operation
10. Disconnect Mode
RME's exclusive Disconnect mode lets you adjust level, input selection and signal mix via your
computer, and simply detach the RPM afterwards. With this, a stand-alone operation of the
RPM gets possible. When the RPM has been configured using Settingsdialog and TotalMix, it
won't loose those settings after detaching it from the computer. Provided, the RPM is operated
with an external power supply, because the RPM (as all HDSP I/O-boxes) does not contain
memory, so alll settings get lost upon power-off.
If you do not need to record or playback audio with your computer, the RPM can be used in a
fixed configuration, for example as:
•
Phono preamp with monitoring
•
Phono and Line preamp with mixing functionality
•
Microphone preamp
•
Headphone mixer
•
Line splitter wioth balanced output
•
what ever you just need!
The unit can also stay connected to a desktop computer, receiving its power from there. The
Disconnect mode will then cause the unit to be isolated from the computer, no longer be
available to any software or other changes – an interesting security application.
11. Bypass Mode
Directly after power-on, in case of power failure or with your computer disconnected, the RPM
is in
Bypass
mode. The phono inputs are set to 0 dB, the phono preamps output signal is hard-
patched to the Line outputs by means of a relais. Even in an emergency the unit will still serve
as a phono preamp and prevent a complete audio dropout.
The
Bypass
mode activated in the Settings dialog only activates the relais, all other settings
remain valid (level/Line etc.). As can be seen in the block diagram (chapter 25), a playback of
other signals than the phono inputs is not possible, neither by the computer nor by TotalMix.
But the headphone output will continue with normal operation.
