Meridian America Meridian 518 manual Appendix 3 RS232, Handset Functions, GoTo Functions

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Appendix 3 – RS232

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Appendix 3 – RS232

The 518 may be operated via its RS232 interface.

Set the communication settings as follows:

Baud rate 9600

Data bits 8

Stop bit 1

Parity none

The 518 is operated by sending short command strings on the RS232 interface. Each command is terminated by a <return> (dec. 13). No echo is implemented. Any subsequent <return> on its own repeats the last command.

518 returns useful strings acknowledging the command and giving status information.

Handset Functions

The following commands emulate the MSR remote control keys.

Sources send one of: CD, RD, LP, TV, T1, T2, CR, CB, TX, V1, V2, LD

Numbers send one of: N1, N2, N3, N4, N5, N6, N7, N8, N9, N0, DP (decimal point)

Menus send one of: ML, MR, MP, MM (for w, e, n, s.)

Source send one of: PR (previous), PL (play), NE (next), PS (pause), FB (fast back), ST (stop), FF (fast forward), RC (record), RP (repeat)

Memory: SR (store), CL (clear)

Status: DI (display), SB (standby)

Volume: VP (up), VM (down), MU (mute)

GoTo Functions

There are direct access functions that use two-character codes that may be followed by additional numbers or parameters.

VN##

Goto volume number

GN±##

Goto gain number

BP

Goto DSP Bypass

GA

Goto DSP Gain

EM

Goto DSP Emphasis

DE

Goto DSP De-emphasis

DT#

Goto dither # (0=flat, 1= HP, ....6=ShapeE)

IN##

Goto input bits ##

OU##C

Goto output bits ## (Consumer format)

OU##P

Goto output bits ## (Professional format)

518 User Guide

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Contents 1992, 1993 Contents Simple rules for using Appendix 4 -Resolution EnhancementAppendix 2 Hints on Mastering Sales and service in the UK Sales and service in the USADesigned & manufactured in the UK by AcknowledgementsIntroduction About this manualAbout the 500 Series Conventions used in this manualInstalling your General precautionsUnpacking ConnectionsPlanning setup Whats inside a 518?Overview as Preamp Type What about analogue sources? What else do I need to know?Overview as Resolution Enhancement Processor Type CD or LaserDisc playback improvementMeridian DSP speaker improvement Meridian Surround improvement Overview as Mastering Processor Type Overview as Multimedia Processor TypeCustomising features ∙ Normal ∙ Standby ∙ Type ∙ ConfigSwitching on Starting off withBasic operation StandbyAdjusting the volume Operating 518 as a Control Unit TypeSelecting a source OutDither FlatShape a Shape BDisplay Advanced operation using the Remote Control Operating 518 as Resolution Enhancer Type Volume controlMuting the sound Menu KeysWith the Remote Control Operation summaryMemory Restoring default settings Config an overviewConfig control settings Customising 518, an overviewHow to customise Customising, general procedureConfig sources and inputs How to change to Type or ConfigCustomising using Type How to change back to NormalMaking changes to an existing setup Setting Type ControllerCustomising using Config How to use ConfigConfig Selecting TypesSelecting the controller mode Setting the system address forSetting the product address for Setting the Standby mode forSetting the Blank display option for Setting the Emphasis option forSetting the Volume mode for Setting the Volume displaySetting up sources Choosing source logosVol. dB Changing the input for a source Choosing the Comms type for a source productChoosing the address of a source product Connections Digital audio connectionsDigital input connections Digital output connectionConnecting to Meridian Digital speakers Communications connectionsTo connect to other Meridian 500 Series equipment ConPart Mastering ProcessorDescription As a Mastering or Multimedia Processor TypeMeridian 500 Comms warning D1 +2Emph +2 ShpB +2Making Recordings Transfer to editor Transfer to the final carrierNoise shaper characteristics Shaper Advantage 44.1kHz 48kHz Normal Pre-emphasisOperating Background Transparency in digital systemsDigital Audio and Quantisation DitherNoise Shaping with dither Dynamic RangePre and De-emphasis Simple rules for using Step-down in sample word sizeNo change in sample size Step up in dynamic rangeSpecification Additional technical informationHelp Cleaning Maintenance & ServicePart Appendix 1 Noise Shapes NoiseAbove noise spectrum for Shape B at 44.1kHz 0Hz 5kHz 10kHz 15kHz 20kHz Vulnerability of the signal Audible results of digital errors and editingAppendix 2 Hints on Mastering with noise-shaping Requirements for D/A conversionAppendix 2 Hints on Mastering Appendix 3 RS232 Handset FunctionsGoTo Functions Appendix 4 -Resolution Enhancement Jitter and de-jitteringDynamic-range FrequencyDynamic-range optimisation with Gain Dynamic-range optimisation with Pre-emphasisShowing CD pre- and de-emphasis curves Dynamic-range optimisation with Noise-shaped Dither DAC enhancement by using high-frequency dither DAC or channel enhancement by word-length matchingContents IndexIndex User Guide User Guide