2882 Users Guide
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The 2882 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 2882 on the 2.1mm coaxial power connector.
Unfortunately, the power capacity supplied through a USB bus is unsufficient to power a Mobile I/O.
As with all electronic devices, when connecting an external power source to the 2882, you should first
connect the power source to 2882 while it is in an unenergized state (e.g. not connected to the mains or
switched off). After the connection to 2882 has been made, you should energize the power source.
If you connect an energized power source to the 2882’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 2882 in any way, to avoid the spark just connect the
power connector to 2882 before connecting the power source to the wall.
2882 Specifications
Mic/Line Inputs
Line +4 Gain Range
-2 dB – +40.5 dB
Line -10 Gain Range
-13.8 dB – +28.7 dB
Inst Gain Range
0 dB – +42.5 dB
Mic Gain Range
0 dB – +42.5 dB
Mic Pad Gain Range
-20 dB – +22.5 dB
Line Input Impedance
10k Ω
Instrument Input Impedance
200k Ω
Mic Input Impedance
200k Ω (12k Ω with phantom)
Mic Pad Input Impedance
10k Ω (6k Ω with phantom)
Table 8.1. Mic/Line Inputs
Maximums
Max Gain
42.5 dB
Preamp Headroom
20 dB above Digital Clip
Phantom Power
+48v Regulated, high current, individually switch-
able, P48 test compliant, short circuit/ hot-swap
protected
Output
+26 dBu
Table 8.2. 2882 Maximums
Latency
A/D
39 samples
D/A
28 samples
Table 8.3. 2882 Converter Latency
