Agilent Technologies ESA-E E4401B, User'S/Programmer'S Reference

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Chapter 4 209
Status Registers
Use Status Registers to Determine the State of Analyzer Events and Conditions
Stat
us Re
giste
rs
Standard Event Status Event Enable Register
The event enable register (contained in the standard event status register) lets you choose which bits 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 values of the bits you want to enable).
For example, to enable bit 7 and bit 6 so that whenever either of those bits is set to 1, the standard event
status summary bit of the status byte register will also be set to 1, send the
*ESE 192 (128 + 64)
command. The
*ESE?
command returns the decimal value of the sum of the bits previously enabled with
the
*ESE <number>
command.
Figure 4-7 Standard Event Status Event Enable Register
STATus:OPERation Register
The STATus:OPERation register is used to determine the specific event that sets bit 7 in the status byte
register. This register also monitors the current measurement state and checks to see if the analyzer is
performing any of these functions:
• measuring
• calibrating
• sweeping
• waiting for a trigger
5 32
Command Error
: A 1 in this bit position indicates that a
command error has occurred. Command errors have SCPI error
numbers from –199 to –100.
6 64
User Request Key (Local
: A 1 in this bit position indicates
that the
LOCAL
key has been pressed. This is true even if the
analyzer is in local lockout mode.
7 128 Power On : A 1 in this bit position indicates that the analyzer has
been turned off and then on.
Bit Decimal
Value
Description