HP ESA-E Series Programmer's Manual page 59

The Questionable Status Calibration condition register continuously
monitors the calibration status of the analyzer. Condition registers are
read-only. To query the condition register, send the command
:STATus:QUEStionable:CALibration:CONDition? The response will
be the decimal sum of the bits which are set to 1.
The transition filter specifies which types of bit state changes in the
condition register will set corresponding bits in the event register. The
changes may be positive (from 0 to 1) or negative (from 1 to 0). Send the
command :STATus:QUEStionable:CALibration:NTRansition <num>
(negative transition) or
:STATus:QUEStionable:CALibration:PTRansition <num> (positive
transition) where <num> is the sum of the decimal values of the bits you
want to enable.
The Questionable Status Calibration 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 will clear the content of that register. To query the event
register, send the command
:STATus:QUEStionable:CALibration[:EVENt]?
Figure 2-16
15
Bit Number
STATus:QUEStionable:CALibration:ENABle <num>
STATus:QUEStionable:CALibration:ENABle?
Questionable
Chapter 2
Bit Description
12 A 1 in this bit position indicates that the RF section needs to be
aligned.
13 Reserved. These bits are not used by the analyzer, but are for
future use with other HP products.
14 A 1 in this bit position indicates that a full alignment is needed,
perhaps due to a large temperature change having been detected
with auto align off, or due to default data being used.
15 Always Zero (0).
14 13 12 11 10 9
Status Calibration Event Enable Register
Using the Analyzer Status Registers
8 6 5 4 3 2 1 0
7
HP ESA Status Registers
ck754a
2-29