Technical data

Using the STATus System 27
Agilent N8201A Performance Downconverter Synthetic Instrument Module, 250 kHz to 26.5 GHz 553
values of the bits you want to enable. For example, to enable bit 7 and bit 4 so that
whenever either of those bits is set to 1, the standard event status summary bit of the
status byte register will be set to 1, send the command *ESE 144 (128 + 16). The
command *ESE? returns the decimal value of the sum of the bits previously enabled with
the *ESE <number> command.
The standard event status enable register presets to zeros (0).
Operation and Questionable Status Registers
The operation and questionable status registers are registers that monitor the overall
instrument condition. They are accessed with the STATus:OPERation and
STATus:QUEStionable commands in the STATus command subsystem. See the Section
“N8201A Core Status Register System (Page 2 of 2)" on page 547.
Operation Status Register
The operation status register monitors the current instrument measurement state. It
checks to see if the instrument is calibrating, sweeping, or waiting for a trigger. For more
information see the *OPC? command located in the IEEE Common Commands section.
Bit Condition Operation
0 Calibrating The instrument is busy executing its automatic
alignment process.
3 Sweeping The instrument is busy taking a sweep.
5 Waiting for trigger The instrument is waiting for the trigger conditions to be
met, then it will trigger a sweep or measurement.