Agilent N518xA, E8663B, E44x8C, and E82x7D Signal Generators Programming Guide 167
Programming the Status Register System
Status Groups
Data Questionable Transition Filters (negative and positive)
The Data Questionable Transition Filters specify which type of bit state changes in the condition
register set corresponding bits in the event register. Changes can be positive (0 to 1) or negative (1
to 0).
Data Questionable Event Register
The Data Questionable Event Register latches transition events from the condition register as
specified by the transition filters. Event registers are destructive read- only. Reading data from an
event register clears the content of that register.
Data Questionable Event Enable Register
The Data Questionable Event Enable Register lets you choose which bits in the Data Questionable
Event Register set the summary bit (bit 3 of the Status Byte Register) to 1.
Response: The decimal sum of the bits set to 1
Example: The decimal value 520 is returned. The decimal sum = 512 (bit 9) + 8 (bit 3).
Commands:
STATus:QUEStionable:NTRansition <value> (negative transition), or
STATus:QUEStionable:PTRansition <value> (positive transition), where
<value> is the sum of the decimal values of the bits you want to enable.
Queries:
STATus:QUEStionable:NTRansition?
STATus:QUEStionable:PTRansition?
Query: STATus:QUEStionable[:EVENt]?
Command:
STATus:QUEStionable:ENABle <value> where <value> is the sum of the decimal values of the bits
you want to enable.
Example: Enable bit 9 and bit 3 so that whenever either of those bits are set to 1, the Data Questionable Status
summary bit of the Status Byte Register is set to 1. Send the command STAT:QUES:ENAB 520 (512 +
8).
Query: STATus:QUEStionable:ENABle?
Response: Decimal value of the sum of the bits previously enabled with the STATus:QUEStionable:ENABle
<value> command.
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