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Summary of Contents for Linear Acoustic AERO.lite
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Page 1: User Manual
AERO.lite DTV Audio/Loudness Manager User Manual Release Date: February 2012 Software Version: 0.0.10 Linear Acoustic Inc. Phone: 717-735-3611 Fax: 717-735-3612 Web: www.linearacoustic.com... -
Page 2: Warranty Information
Warranty Information or via ... - Page 3 ...
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Page 4: Table Of Contents
Chapter 1: Introduction and Overview Principles of Operation ................Location of AERO.lite ................Reference Levels ..................Chapter 2: Connections and Quick Setup Unpacking and Inspection ............... Installation ....................Rear Panel ....................RS-485 Connection ................2.3.1 GPI/O ..................2.3.2 ETHERNET ................ - Page 5 3.2.11 DSP 1 Tx Errors ..............3.2.12 DSP 1 Rx Errors ..............3.2.13 DSP 2 Version ................ 3.2.14 DSP 2 Tx Errors ..............3.2.15 DSP 2 Rx Errors ..............3.2.16 AES In Detect ................. Setup Menu ................... Presets Menu ..................3.4.1 User Preset ................
- Page 6 Chapter 4: Presets and Processing Description of Factory Presets .............. Processing Structure ................Input AGC ....................4.3.1 Gate Threshold ................. 4.3.2 Freeze Thresh(old) ..............Multiband AGC ..................4.4.1 Density ..................Multiband Levels ................... Final Stage .................... 4.6.1 Output Lim(iter) Drive ...............
- Page 7 Regulatory Information and Fusing This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with this instruction manual, may cause harmful interference to radio communications.
- Page 8 This equipment complies with the EMC requirements of EN55103-1 and EN55103-2 when operated in an E2 environment in accordance with this manual. IMPORTANT SAFETY NOTICE This unit complies with the safety standard EN60065. The unit shall not be exposed to dripping or splashing and no objects filled with liquids, such as coffee cups, shall be placed on the equipment.
- Page 9 AVISO IMPORTANTE DE SEGURIDAD Esta unidad cumple con la norma de seguridad EN60065. La unidad no debe ser expuesta a goteos o salpicaduras y no deben colocarse sobre el equipo recipientes con liquidos, como tazas de cafe. Para asegurarse un funcionamiento seguro y prevenir cualquier posible peligro de descarga o riesgo de incendio, se han de observar las siguientes precauciones: o Asegúrese que el selector de tensión esté...
- Page 10 WARNING: To reduce the risk of fire, replace fuses only with the same type and rating. Both units use a universal switching power supply that handles the full range of nominal mains voltages between 90 and 264 VAC and any frequency between 50 Hz and 60 Hz. Check Main Fuse The Main fuse rating is T 1A L (1 Amp, 250 V, 20 mm, time-lag, low breaking capacity) for all operating voltages.
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Page 11: Chapter 1: Introduction And Overview
DTV encoder as possible, as the units work closely together and will benefit from short cable runs and common clocking. Reference Levels The AERO.lite is designed to support a standard reference level of -20dBFS via its digital inputs. Analog inputs support nominal levels from +4dBu (nominal) to +24dBu (maximum). - Page 12 Figure 1.1 AERO.lite Internal Audio Path Relay Bypass SDI In HD/ SD-SDI (HD/ SD) HD/ SD-SDI SDI-Out Demux M ux (HD/ SD) Ref Sel 48kHz Int. Relay Bypass 1/ 2 SDI In M ain Out 1-16 1-16 24-Bit Analog Proc...
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Page 13: Chapter 2: Connections And Quick Setup
Far be it for us to get in the way of you and compelling audio. We want you to get your new AERO.lite up and running just as quickly as you do, and realize this is not the most exciting portion of any user manual. However, being thorough and careful now can prevent common issues related to improper installation later. -
Page 14: Rear Panel
“Bypass Processing” preset if EAS is inserted ahead of the AERO.lite (though installing your EAS unit after the AERO.lite is preferred). Note that GPI functions require held closures for the duration of the desired function. -
Page 15: Power
Quick Setup Notes The Linear Acoustic AERO.lite is configured at the factory and arrives ready to go on the air after making the proper input and output connections and establishing the proper I/O and clock sync settings. -
Page 16: Chapter 3: Detailed Operation And Menus
A compact version of the menu tree is provided below, though you may find it most helpful to study the larger, fold-out menu tree at the end of this chapter and keep it handy as you navigate the AERO.lite for the first time. Figure 3-1 Menu Tree... -
Page 17: Main Menu (Signal Status Meters)
Main Menu (Signal Status Meters) 3.1.1 Audio Input/Output Meters and LKFS Display Shows input and output audio levels on the left and right channels, and the current loudness LKFS loudness measurements. Figure 3-2 Input/Output Meters and LKFS Display 3.1.2 AGC/Processing Meters Shows the amount of gain expansion or reduction of the wideband input AGC (W) and each band of the multiband AGC’s (1-5). -
Page 18: Statistics Menu
Statistics Menu Provides detailed information about software, firmware and DSP versions, DSP communications status, device options, SNMP errors and packet information, and the presence of AES pairs 1-8, in the following order as you navigate downward in the menu: 3.2.1 Firmware Version Shows current firmware version. -
Page 19: Dsp 2 Version
3.2.13 DSP 2 Version Shows the current DSP 2 version. 3.2.14 DSP 2 Tx Errors Shows the number of transmit errors between micro and DSP 1 and the error codes. Moving the menu knob to the right resets the meter. 3.2.15 DSP 2 Rx Errors Shows the number of receive errors between micro and DSP 1 and the error codes. -
Page 20: Gpi Control
3.5.6 SRC Bypass When enabled, bypasses the Sample Rate Converters. If the AERO.lite is synchronized to incoming signals and plant reference, there is no reason for the SRCs to be in line, and bypassing them will lower latency by about 3 milliseconds. -
Page 21: Proc In 1/2 Src
AES In 1/2: Used the AES inputs. 3.5.11 SDI Embed Audio Selects whether to enable audio re-embedding or pass the SDI signal through the AERO.lite untouched. Note this does not affect de-embedding, which is active at all times. 3.5.12 SDI Out Selects the source for re-embedding into an applied SDI signal. -
Page 22: Gpo (1-4) Alert When
3.6.1 IP Address Allows you to assign an IP address to the AERO.lite. 3.6.2 Net Mask Allows you to configure the subnet mask. -
Page 23: Port Number
The ITU Meter Option is a simple utility ITU loudness meter used for calibrating the final loudness of the AERO.lite. This meter and others like it are based on an international standard developed to give an objective estimation of loudness levels, which are normally very subjective. -
Page 24: Snmp (Option)
The current AERO.lite MIB file is copied below. For use in an SNMP management system, this data can simply be copied and pasted into a text file that can be re-named LINEAR-ACOUSTIC-AERO-LITE.mib. - Page 25 DESCRIPTION "Devices's firmware version." ::= { la2002-system 3 } -- la2002-status -- Power Supply 1 power-supply-1 OBJECT-TYPE SYNTAX INTEGER {fail (1), ok (2)} ACCESS read-only STATUS mandatory DESCRIPTION "Status of power supply 1." DEFVAL { 1 } ::= { la2002-status 1 } -- Power Supply 2 power-supply-2 OBJECT-TYPE SYNTAX...
- Page 26 "Detection of Primary Audio Signal." DEFVAL { 1 } ::= { la2002-status 5 } -- GPO1 Current State gpo1-status OBJECT-TYPE SYNTAX INTEGER {off (1), on (2)} ACCESS read-only STATUS optional DESCRIPTION "Status of GPO1." DEFVAL { 1 } ::= { la2002-status 6 } -- GPO2 Current State gpo2-status OBJECT-TYPE SYNTAX...
- Page 27 ::= { la2002-status 13 } -- traps -- 10/29/2010 RDC -- Linear Acoustic rules for enterprise-specific traps -- 1. Use trap numbers from 10 to 127. This makes them different from generic traps (0 - 5) and lets them fit into a consistent and small space in BER TLV packet.
- Page 28 ENTERPRISE la2002 DESCRIPTION "Trap, Primary Audio lost or not detected." ::= 12 -- Audio Detected (Primary) trap-pri-audio-detected TRAP-TYPE ENTERPRISE la2002 DESCRIPTION "Trap, Primary Audio detected." ::= 13 -- GPO1 Turned On trap-gpo1-on TRAP-TYPE ENTERPRISE la2002 VARIABLES {gpo1-assignment} DESCRIPTION "Trap, GPO1 On" ::= 14 -- GPO1 Turned Off trap-gpo1-off...
- Page 29 ENTERPRISE la2002 VARIABLES {gpo3-assignment} DESCRIPTION "Trap, GPO3 Off" ::= 19 -- GPO4 Turned On trap-gpo4-on TRAP-TYPE ENTERPRISE la2002 VARIABLES {gpo4-assignment} DESCRIPTION "Trap, GPO4 On" ::= 20 -- GPO4 Turned Off trap-gpo4-off TRAP-TYPE ENTERPRISE la2002 VARIABLES {gpo4-assignment} DESCRIPTION "Trap, GPO4 Off" ::= 21...
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Page 30: Chapter 4: Presets And Processing
Chapter 4: Presets and Processing Description of Factory Presets momentary �... -
Page 31: Processing Structure
Processing Structure Figure 4.2 Input AGC... -
Page 32: Gate Threshold
4.3.1 Gate Threshold 4.3.2 Freeze Thresh(old) � Multiband AGC 4.4.1 Density Multiband Levels... -
Page 33: Final Stage
Final Stage 4.6.1 Output Lim(iter) Drive 4.6.2 Master Output... -
Page 34: Chapter 5: Troubleshooting
The factory presets included with the AERO.lite will not cause pumping or breathing. If you do detect these artifacts, it is possible that audio is being processed somewhere in the plant by legacy gear that has not been removed from the signal path. - Page 35 Table 6-1 Electrical Specifications Ethernet Port center pin is positive! Table 6-2 Mechanical Specifications...
- Page 36 Table 6-3 Environmental Specifications Table 6-4 GPI/O Parallel Control Port...
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