Remote Control
MTD200 MPEG Test Decoder User Manual
5–59
Error Queue Query.
Each error condition in the instrument causes an entry in the
error queue. The entries in the error queue are detailed error messages in plain
text which can be read out via remote control by the query SYSTem:ERRor?.
Each query SYSTem:ERRor? returns an entry from the error queue. If there are
no more error messages in the error queue, 0 = “No error” is returned by the
instrument.
The error queue should be queried in the controller program whenever after a
SRQ a precise description of the error cause is required. In particular in the test
phase of a controller program the entries in the error queue provide a valuable
support, since they also register faulty commands from the controller to the
instrument.
Table 5–12 contains the various commands and events causing a reset of the
status reporting system. None of the commands, with the exception of *RST,
affects the functional device settings..
Table 5–12: Resetting the device functions
Event
Switching on
AC supply voltages
R T
L
Power On Status Clear
R T
L
Effect
0
1
*RST
*CLS
ÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁ
Clears STB, ESR
ÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁÁ
yes
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁ
yes
ÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁ
Clears SRE, ESE
ÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁÁ
yes
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁÁÁÁ
Clears EVENt registers
ÁÁÁÁÁ
Á
ÁÁÁ
Á
ÁÁÁÁÁ
ÁÁÁÁÁ
Á
ÁÁÁ
Á
ÁÁÁÁÁ
yes
ÁÁÁÁ
Á
ÁÁ
Á
ÁÁÁÁ
ÁÁÁ
Á
Á
Á
ÁÁÁ
yes
ÁÁÁÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁÁ
Á
Á
ÁÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁÁÁÁ
Clears ENABle registers of all OPERa-
tion and QUESTionable registers,
fills ENABle registers of all other regis-
ters with “1”.
ÁÁÁÁÁ
Á
ÁÁÁ
Á
Á
ÁÁÁ
Á
ÁÁÁÁÁ
ÁÁÁÁÁ
Á
ÁÁÁ
Á
Á
ÁÁÁ
Á
ÁÁÁÁÁ
yes
ÁÁÁÁ
Á
ÁÁ
Á
Á
ÁÁ
Á
ÁÁÁÁ
ÁÁÁ
Á
Á
Á
Á
Á
Á
ÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁÁÁÁ
Fills PTRansition registers with “1”,
clears NTRansition registers
ÁÁÁÁÁ
Á
ÁÁÁ
Á
ÁÁÁÁÁ
ÁÁÁÁÁ
Á
ÁÁÁ
Á
ÁÁÁÁÁ
yes
ÁÁÁÁ
Á
ÁÁ
Á
ÁÁÁÁ
ÁÁÁ
Á
Á
Á
ÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁ
Clears error queue
ÁÁÁÁÁ
ÁÁÁÁÁ
yes
ÁÁÁÁÁ
ÁÁÁÁÁ
yes
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁ
yes
ÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁ
Clears output buffer
ÁÁÁÁÁ
ÁÁÁÁÁ
yes
ÁÁÁÁÁ
ÁÁÁÁÁ
yes
ÁÁÁÁ
ÁÁÁÁ
1)
ÁÁÁ
ÁÁÁ
1)
ÁÁÁÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁÁÁÁ
Clears command processing and input
buffer
ÁÁÁÁÁ
Á
ÁÁÁ
Á
ÁÁÁÁÁ
yes
ÁÁÁÁÁ
Á
ÁÁÁ
Á
ÁÁÁÁÁ
yes
ÁÁÁÁ
Á
ÁÁ
Á
ÁÁÁÁ
ÁÁÁ
Á
Á
Á
ÁÁÁ
yes
1)
Any command that is the first one in a command line (that is, one that immediately
follows a <PROGRAM MESSAGE TERMINATOR>) clears the output buffer.
Resetting the Status
Reporting System
Summary of Contents for MTD200
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