ULN-8 Users Guide
122
MIDI
The ULN-8 offers MIDI input and output ports for direct connection of a control surface. These ports are
only active while MIOConsole3d is running; the ULN-8 cannot utilize a control surface in standalone oper-
ation. MIOConsole3d makes these ports available to other applications while it is running, but the MIDI
implementation is currently optimized for control use only - it is not recommended to use these ports for
connecting keyboards or other devices that require accurate timing.
SMPTE
The ULN-8 has SMPTE input and output ports dedicated for timecode use. The SMPTE input and output are
routed from the “SMPTE” category in the MIOConsole3d Source and Destination routing menus. Please
note that MIOConsole3d does not natively decode or encode MTC at this time; if you need to synchronise
to MTC, you will need third party software.
Power
One of ULN-8’s great strengths is the flexibility of its power system. The ULN-8 can be powered from any
DC source in the range of 14V to 28V as long as it provides 32 Watts of power. The DC inputs on the
ULN-8 are a 2.1mm coaxial power connector, center positive and a 4-pin XLR connector Pin 4 Hot. So if
you are powering the unit with a third party power source and it supplies 14V, the power source will have
to provide 2.3 amps of current. If you are powering the unit with 24V, the power source will have to provide
1.3 amps of current, and so on.
The ULN-8 ships with a world-ready 18 volt, 2 amp power supply. You can plug this supply into any AC
power source from 90V to 240V, 50Hz - 60Hz, using an appropriate IEC power cord, and it will supply the
proper power to the ULN-8 on the 4 pin XLR power connector. Unfortunately, the power capacity supplied
through a USB bus is unsufficient to power a ULN-8.
As with all electronic devices, when connecting an external power source to the ULN-8, you should first
connect the power source to the ULN-8 while it is in an unenergized state (e.g. not connected to the mains
or switched off). After the connection to the ULN-8 has been made, you should energize the power source.
If you connect an energized power source to the ULN-8’s 2.1mm power connector you may see a small
spark when you make the connection. This is due to surge current and is normal if you connect a power
source in this way. While this will not damage the ULN-8 in any way, to avoid the spark just connect the
power connector to ULN-8 before connecting the power source to the wall.
ULN-8 Specifications
Rails
Preamp Rails
±15.8 Volts
Analog Rails (low power)
±9.9 Volts
Analog Rails (high power)
±12.6 Volts
Phantom Power
48 ± 0.1 Volts
Max Phantom Current Per Mic
10 ma
Table 5.1. ULN-8 Voltage Rails
Maximum I/O Levels (Balanced)
Peak Line Output @ 0 dBFS (no jumper/low power) +18.5 dBu
Peak Line Output @ 0 dBFS (output jumper/low
power)
+22.0 dBu
Peak Line Output @ 0 dBFS (output jumper/high
power)
+24.5 dBu
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