Lab.gruppen LM 44 - Manual (Page 39)

Front Panel Interface
33
Lake LM Series Operation Manual Rev 1.2.8
The maximum input level accepted by the analog input pre-amplifiers without clipping may be set to 12 dBu
or 26 dBu. Digital gain offset may be applied to AES3 digital input signals in 0.1 dB increments from -100 dB
to +15 dB.
6.10.3.2 AES3 Input Termination
MENU > I/O CONFIG > AES TERM
Figure 6-18: AES Termination Edit Screen
To adjust the AES3 Input Termination, select AES TERM from the I/O CONFIG menu then use the rotary
encoder to toggle the value. A setting of ‘Terminated’ is also displayed on the I/O STATUS screen.
For fault-free operation when using AES3 digital audio as an input source, inputs must be correctly termi-
nated with the characteristic impedance of 110 ohm. The Input Termination setting is determined by the
method used to distribute the AES3 signals.
The processor at the end of a distribution line should be set to TERMINATED; all other processors should
be set to UNTERMINATED. If an AES3 distribution amplifier (DA) is being used to distribute the digital audio
signals, with one DA output per processor, then all terminations should be on. However, if the AES3 is
daisy-chained, only terminate the last processor in the chain.
6.10.3.3 Iso-Float
MENU > I/O CONFIG > ISO-FLOAT
Figure 6-19: Iso-Float Menu