DEV 1951 - User Manual DEV

User Manual DEV 1951
92  Copyright DEV Systemtechnik GmbH 2004-2017
5.7.2 Leitch Protocol Communication Structure
The basic command structure is:
Command:
@<sp><command><CR>
Notation:
@ = the "AT" sign
<sp> = the "space" character
<CR> = the carriage return or carriage return/line feed character(s)
Other characters used in this context:
? = the question mark character
! = the exclamation mark character
, = the comma character
: = the colon character
/ = the slash character
Note:
 All commands start with a "@", followed by the space character <sp>.
The command input is completed with a carriage return character <CR>.
 Parameter numbers are noted in hexadecimal format ("0"…"9" and "A"…"F")
and the counting is zero based, i.e. starting from "0"; e.g. "1" for addressing the
second input port.
 For corrections during the command input, the backspace key ("←" on the
keyboard) is supported.
 The device sends a new prompt (">") after the execution of a command and
after the possible response of a command to indicate that it is ready for the
next command.
 If the syntax of the command is not correctly entered, if a parameter exceeds
the permissible range, or if there is an attempt to switch in Local Mode,
the device responds with the Leitch Error Message
*** ERROR 2002 *** Illegal, Invalid, or overrange parameter entered
Command entry ignored
>_
 Except to the "Enable Reporting" command (please refer to chapter 5.7.4.1) the
device always returns a response to a command.
 The switching command (X:, chapter 5.7.4.6) can be only executed in
Remote Mode.