PT 5780 DVB-T Modulator
ProTelevision Technologies
Remote Interface
Instruction Manual
Revision 3.11
5-1
5
Remote Interface
5.1
General Description
The serial remote allows control of virtually all functions in the modulator as well as the
monitoring of various instrument settings.
The serial remote operates electrically as an RS 232C communication port. The settings for the
RS 232 communication port can be set up using the front panel of the modulator (see Chapter
4.3.2) or SCPI commands
.
The PT 5780 communication protocol uses the:
♦
SCPI 1995.0:
Standard Commands for Programmable Instruments, Vol I-IV. This protocol is based on the
IEEE 488.2 (IEEE Standard Codes, Formats, Protocols, and Common Commands).
In the following description of the commands a basic knowledge of the operation of the
instrument is assumed.
To use the serial remote a basic understanding of SCPI programming and computer control is
also recommended. The paper: “A Beginner’s Guide to SCPI” by Barry Epler, Hewlett-Packard
Press®, 1991 can be used to gain a basic knowledge of the ideas behind the SCPI system.
5.2
General Description of the Interface Syntax
5.2.1
General Information
The remote interface system is organized in a tree structure. In order to access commands
lower in the tree or in different branches the entire command string should be used. Indentation
is used to indicate the root level and the branches, with the highest level to the left. The
complete command always includes all the root levels.
Enter more than one command on a line by using a semicolon (“;”) as a divider. If the next
command is part of the same command system the separation is a “;” only. If the next command
is part of another command system the “;” is followed by a “:”. A command line is terminated by
<LF>.
The valid parameter ranges are shown in the command tables. Non-valid values generate an
internal error message.
Summary of Contents for PT 5780
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