Tektronix MTD200, User Manual

Page: 105 / 211

Remote Control
5–8
MTD200 MPEG Test Decoder User Manual
If the successive commands belong to the same system and therefore have one or
more common levels, the command line may be shortened. The second
command following the semicolon then starts at the level that is below the
common levels (see also Figure 5–1 on page 5–6). The colon after the
semicolon has to be omitted.
Example:
SYSTem:COMM:SERial:BAUD 4800;:SYSTem:COMM:SERial:BITS 8
This command line contains two commands separated by a semicolon. Both
commands belong to the SYSTem system COMMunicate:SERial subsystem;
they have three common levels.
In the shortened command line the second command starts at the level below
SYSTem:COMMunicate:SERial. The colon after the semicolon has to be
omitted.
The shortened form of the command line is:
SYST:COMM:SER:BAUD 4800;BITS 8
A new command line always starts with the full path however.
Example:
SYSTem:COMMunicate:SERial:BAUD 4800
SYSTem:COMMunicate:SERial:BITS 8
Unless otherwise expressly specified, a query is defined for each setting
command. The query is generated by appending a question mark to the
associated setting command. The SCPI rules imposed on the query responses are
somewhat stricter than those of the IEEE 488.2 standard:
1. The required parameter is sent without header.
Example:
SYSTem:COMMunicate:SERial:BAUD?
Response:
4800
2. Maximum and minimum values can be requested by a special text parameter.
Example:
SYSTem:COMMunicate:SERial:BAUD? MINimum
Response:
1200
3. Numeric values are output without unit. Physical quantities refer to the basic
units.
Example:
READ:TS:BITRate?
Response:
38E6 for 38 MBit/s
Responses to Queries