Aviom AN-16/i - Manual (Page 21)

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Input Level Switch
The AN‑16/i has been designed to accept a wide range of professional and
semi‑professional audio levels. There are four Input Level gain settings
available. Changes to the input level on the AN‑16/i front panel affect a pair
of channels at a time.
The four levels are +22dBu, +4dBu, 0dBu, and ‑10dBV. To select the proper
Input Level setting, choose the Input Level position that most closely
matches the maximum output level of your audio gear.
The AN-16/i has four input level options per channel pair.
To maximize signal‑to‑noise when setting up Pro16 products it is important
to understand how the input and output settings on these products interact.
Proper calibration and gain staging with all devices in an audio system is
essential. The AN‑16/i Input Module has four input gain range settings:
‑10dBv, 0dBu, +4dBu, and +22dBu. These are designed to accommodate a
wide range of input signal sources. Choose the setting that allows maximum
input signal level without clipping.
The AN‑16/i has a maximum input level of +22dBu. Signal levels above
+22dBu will clip the input stage of the device and cause digital distortion.
The selected input gain setting on the AN‑16/i front panel changes the
headroom available for the input signal, but remember that the maximum
input level will always be +22dBu regardless of the selection. See the table
below.
AN-16/i Gain Setting Clip Point
‑10dBv +4dBv
0dBu +14dBu
+4dBu +18dBu
+22dBu +22dBu
With the input gain switch set to 0dBu, for example, input signals ranging from
‑∞ to +14dBu in level can be used. A +14dBu signal level will be transmitted
to all line‑level output modules as a full‑code signal. Signals above +14dBu
will clip the input stage of the AN‑16/i, and that clipped audio data will be
sent downstream to all output modules and Personal Mixers. There are two