1、 1 Scope This practice defines the type-specific messages which enable the transport of status monitoring and diagnostics protocol (SMDP) data as defined in SMPTE 273M bi-directionally over ESbus and ESlan. It defines the diagnostics processor as a distinct virtual machine type. It is intended for u
2、se when it is desired to pipe (transport) SMDP information over ESbus or ESlan as an alternative to the use of the dedicated SMDP transport mechanism. 2 General 2.1 Virtual machine type Monitoring and diagnostics processors operating under SMPTE status monitoring and diagnostics protocol (SMDP SMPTE
3、 273M) shall be identified as virtual machines of a type which is uniquely coded as 07“ expressed as an 8-bit word in hexadecimal form. 2.2 Notation This practice describes the coding of keywords in the form shown below. The coding NN represents the assigned keyword in hexadecimal format. KEYWORD Fo
4、rmat: | | | Parameter description; parameter value coding, scale, or range; parameter definitions and explanations. In the SMPTE Recommended Practices listed in annex A, keywords are listed numerically in hexadecimal notation. Keywords are reserved as follows: Keywords 00h 1Fh: System service subset
5、 Keywords 20h 3Fh: Common message subset Keywords 40h FFh: Virtual machine type-specific subset Page 1 of 2 pages RP 183-2004 Revision of RP 183-1995 Copyright 2004 by THE SOCIETY OF MOTION PICTURE AND TELEVISION ENGINEERS 595 W. Hartsdale Ave., White Plains, NY 10607 (914) 761-1100 Approved October
6、 8, 2004 SMPTE RECOMMENDED PRACTICE Monitoring and Diagnostics Processors RP 183-2004 Page 2 of 2 pages 3 Keyword PIPE (PIPE) This command enables the transport of monitoring and diagnostics data, contained within the SMDP DATA information field, between SMDP virtual machines. Format: 4 Information
7、field This information field contains the SMDP data to be transferred over the ESbus or ESlan network. SMDP DATA (SMDP) Format: 8-bit binary unsigned number. Specifies the length of the raw data message to follow. The monitoring and diagnostics protocol raw data message. Annex A (informative) Biblio
8、graphy ANSI/SMPTE 207M-1997 (R2003), Television Digital Control Interface Electrical and Mechanical Characteristics SMPTE 273M-2003, Television Status Monitoring and Diagnostics Protocol SMPTE 275M-1995, Television and Audio Equipment ESlan-1 Remote Control System SMPTE RP 113-1996, Supervisory Prot
9、ocol for Digital Control Interface SMPTE RP 138-1996, Control Message Architecture for Digital Control Interface SMPTE RP 139-1997, Tributary Interconnection for Digital Control Interface SMPTE RP 163-1992, Television System Service Messages SMPTE EG 29-1993, Remote Control of Television Equipment SMPTE EG 30-1995, Implementation of ESlan Standards
