Technical data

552 Agilent N8201A Performance Downconverter Synthetic Instrument Module, 250 kHz to 26.5 GHz
27 Using the STATus System
The standard event status register is used to determine the specific event that set bit 5 in
the status byte register. To query the standard event status register, send the command
*ESR?. The response will be the decimal sum of the bits which are enabled (set to 1). For
example, if bit number 7 and bit number 3 are enabled, the decimal sum of the 2 bits is 128
plus 8. So the decimal value 136 is returned.
In addition to the standard event status register, the standard event status group also
contains a standard event status enable register. This register lets you choose which bits in
the standard event status register will set the summary bit (bit 5 of the status byte register)
to 1. Send the *ESE <number> command where <number> is the sum of the decimal
Bit Description
0 A 1 in this bit position indicates that all pending operations were completed following execution of the
*OPC command.
1 This bit is always set to 0. (The instrument does not request control.)
2 A 1 in this bit position indicates that a query error has occurred. Query errors have SCPI error numbers from
−499 to −400.
3 A 1 in this bit position indicates that a device dependent error has occurred. Device dependent errors have
SCPI error numbers from −399 to −300 and 1 to 32767.
4 A 1 in this bit position indicates that an execution error has occurred. Execution errors have SCPI error
numbers from −299 to −200.
5 A 1 in this bit position indicates that a command error has occurred. Command errors have SCPI error
numbers from −199 to −100.
6 Reserved
7 A 1 in this bit position indicates that the instrument has been turned off and then on.