Universal Audio 2192 Instructions d'exploitation télécharger pdf (Page 19)

The analog outputs are calibrated at the factory so that a digital signal level of –18dBFS will output

an analog level of +4dBu, for 18dB of headroom. The line outputs can drive high or low (600ohm)

impedance inputs with no changes in level.

Analog Line Trims

The analog line trims are used to calibrate analog I/O signal levels to match external analog

hardware.

The analog I/O are calibrated at the factory so that analog levels of +4dBu correspond to –

18dBFS digital levels, for 18dB of headroom and maximum analog input and output levels of

+22dB. The trims can be adjusted to accommodate maximum levels over a wide range using the

rear panel 15-turn trim potentiometer.

Line Input Trims

These trims are used to calibrate the left and right analog line inputs. Differential shunt attenuation

is used to maintain maximum signal and conversion integrity.

Line Output Trims

These trims are used to calibrate the left and right analog line outputs. Differential shunt

attenuation is used to maintain maximum signal integrity.

Line Trim Procedure

To calibrate the analog inputs, a digital signal meter, and an accurate analog reference generator

with low impedance outputs are required. To calibrate the analog outputs, a digital signal

generator and an accurate analog dB level meter with balanced inputs are required.

Note: Before adjusting the factory calibration levels, make sure your equipment reads the current

calibration values correctly! If your equipment does not match the factory settings, you will need to

find out why before you proceed with recalibration.

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Universal Audio 2192 Instructions d'exploitation Page 19