Uln-8 rear panel – Metric Halo Mobile I/O User Manual
Page 101
ULN-8 Users Guide
101
the monitors or front panel headphone output in case of accidental feedback loops and other audio
unpleasantries. The Dim button attenuates the selected path by 20 dB.
• The Monitor Control encoder provides front panel adjustment for your audio. By pressing the encoder,
it can toggle between affecting the Monitor Control section or headphones. There are two multicolor
LEDs below the encoder that indicate which path the encoder is modifying as well as mute and dim
status.
The ULN-8 front panel also provides access to the Headphone output. The headphone output jack is a TRS 1/4”
jack that provides the Left Channel on the tip, the Right Channel on the ring and the ground return for the two
channels on the sleeve. These signals are all ground referred, so they may also be split and fed single-ended
(unbalanced) to an external audio device.
The ULN-8 headphone output is suited to a wide range of impedances. Headphones with lower impedance
would be expected to get louder than those with higher impedance.
There are two DI inputs on the front panel, which are paralleled with Line inputs 1 and 2. The DI inputs can
provide 0, 10, or 20db of gain selectable via internal jumpers.
More information regarding the front panel can be found in the
.
ULN-8 Rear Panel
Figure 8.10: ULN-8 Rear Panel
The ULN-8 rear panel features:
• 4 pin XLR DC power jack (14v - 28v, 32 Watts)
• 8 channels balanced mic inputs on DB25. Each input has:
• -22 dB to +91.5 dB of gain range
• Dynamic Range (-60 dB, flat 0-22.05 kHz, typ): 115 dB
• +0/-1.0dB @ fs = 192KHz: 2.9 Hz - 64.7 kHz
• Noise Floor (flat 0-22.05 kHz, typ): 115 dB
• remote switchable 48v Phantom power, with 10mA current limit
• 8 channels balanced line inputs on DB25. Each input has:
• -12 dB to +31.5 dB of gain range
• Dynamic Range (-60 dB, flat 0-22.05 kHz, typ): 115 dB
• +0/-1.0dB @ fs = 192KHz: 1.8 Hz - 64.7 kHz
• Noise Floor (flat 0-22.05 kHz, typ): 115 dB
• 8 channels balanced line level sends on DB25 that mirror the selected input
• 8 channels balanced line/monitor outputs on DB25. Each output has:
• 24-bit 192kHz D/A converters (120dB SNR)
• Gain range from -96 dB to +30 dB
• Outputs 1 and 2 also multed to 1/4" TRS connectors
• 8 channels AES digital I/O on DB25
• Single wire mode for full 8 channels at 44.1-192KHz operation
• Wordclock input/output on BNC connectors at 1x or 256x rates