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The Questionable status data structure is used to alert the user to instrument conditions that affect the signal
quality. Two types of conditions are defined in the AWG, and these are:
1) Frequency - Trigger rate conflict, and
2) Output overload condition.
Each condition is reported separately for each channel. Thus, a total of four conditions may be reported.
The data structure is comprised of five 16-Bit registers. Each bit represents a different status condition. In the
AWG, bits 9 and 11 are used as follows:
Bit 9: Frequency - trigger rate conflict.
Bit 11: Output overload.
The existence of these conditions is indicated in the CONDition register. Bit 3 of the status byte is used to indicate
the occurrence of a questionable status condition. The conditions cause this bit to be set depending on the values of
the other four registers.
The positive transition filter enables a bit in the event register to be set when a condition changes from false to
true. The negative transition register enables a bit in the event register to be set when a condition changes from
true to false. In order for the bit in the event register to be set, the corresponding bit in the transition register must
be set.
Bit 3 in the status byte will be set if a bit in the event register is set while the corresponding bit in the enable
register is set.
4.13.5.4.1 Questionable Condition
:STATus:QUEstionable:CONDition?
This query is used to read the condition register.
Command Type: Query only
Query
Syntax:
:STATus:QUES:COND?
Response:
NR1
4.13.5.4.2 Positive Transition Filter
:STAT:QUES:PTR
This command is used to set and query the value of the positive transition filter.
Arguments
Type:
NRf
Range:
0 to 131,072. Non integer arguments are rounded before execution.
Command Type: Setting or Query
Setting
Syntax:
:STAT:QUES:PTR<ws><NRf>
Examples:
:STAT:QUES:PTR 2048
Query
Syntax:
:STAT:QUES:PTR?
Response:
NR1
4.13.5.4.3 Negative Transition Filter
