L-Acoustics LA8 User Manual
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LA 8_U M_E N_5 .0 w w w . l - a c o u s t i c s . c o m 3 94.9.4 AES/EBU IN GAINThe LA-AES3 card includes an input gain module which can be set from -12 dB to +12 dB by 0.1 dB steps. It helpsaligning the digital audio source level to the analog level value so as to ensure seamless fallback switch from AES/EBU toanalog inputs in case of fallback mode activation (refer to section 4.9.3).The AES/EBU input gain must be set according to the analog audio source’s calibration (based on manufacturer’s specsor user measurements) and the amplified controller’s analog inputs calibration (0 dBfs for an input signal of +22 dBu).The three following examples illustrate the most common cases: If the analog audio source is calibrated at +18 dBu for 0 dBfs, set the AES/EBU input gain to -4 dB. If the analog audio source is calibrated at +24 dBu for 0 dBfs, set the AES/EBU input gain to +2 dB. If the analog audio source is calibrated at +22 dBu for 0 dBfs or if the fallback option is disabled, set the AES/EBUinput gain to +0 dB.To set the AES/EBU input gain follow these steps (see also Figure 37):From the main menu select OPTIONS and press the OK key or the encoder wheel (or ESC to abort).1.Turn the encoder wheel to select AES/EBU IN GAIN.2.Press the OK key or the encoder wheel to enter the page (or ESC to abort).3.While holding the IN A, IN B, or OUT1 key turn the encoder wheel to select an input gain value and release4.the key.The setting applies in real-time when turning the encoder wheel.Value setting resolution Turn the encoder wheel to obtain a 1-step resolution. Press and turn the encoder wheel to obtain a 10-step resolution.Figure 37: Setting the AES/EBU input gain4.9.5 DELAY UNITDelay values can be displayed in milliseconds, meters, feet, or samples.To select the delay unit follow these steps:From the main menu select OPTIONS and press the OK key or the encoder wheel (or ESC to abort).1.Turn the encoder wheel to select DELAY UNIT.2.Press the OK key or the encoder wheel to enter the page (or ESC to abort).3.Turn the encoder wheel to select the chosen setting.4.Press the OK key or the encoder wheel to validate the setting (or ESC to abort).5.For example, in Figure 30 the delay unit has been modified from millisecond to meters.4.9.6 OUT CH TEMPThis page displays the temperature of each individual amplifier channel circuit as a percentage of the maximumoperating temperature: 85°C = 100 %.For example, in Figure 30 the temperature of channels OUT 1 to OUT 4 is respectively 52, 53, 50, and 48 %. |
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