HP ESA-E Series - Page 53

Chapter 2 2-23
HP ESA Status Registers
Using the Analyzer Status Registers
The Questionable Status Power Condition Register continuously
monitors output power status of the analyzer. Condition registers are
read-only. To query the condition register, send the command
:STATus:QUEStionable:POWer: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:POWer:NTRansition <num>
(negative transition) or :STATus:QUEStionable:POWer:PTRansition
<num> (positive transition) where <num> is the sum of the decimal
values of the bits you want to enable.
The Questionable Status Power 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:POWer[:EVENt]?
Figure 2-10
The Questionable Status Power event enable Register lets you choose
which bits will set the summary bit (bit 3) of the Questionable Status
Condition Register to 1. Send the command
:STATus:QUEStionable:POWer:ENABle <num> where <num> is the sum
of the decimal values of the bits you want to enable. For example, to
enable bit 9 and bit 3 so that whenever either of those bits is set to 1,
the Power Summary bit of the Questionable Status Register will be set
to 1, send the command :STAT:QUES:POW:ENAB 520 (512 + 8). The
command :STATus:QUEStionable:POWer:ENABle? returns the
decimal value of the sum of the bits previously enabled with the
:STATus:QUEStionable:POWer:ENABle <num> command.
Bit Number
7
89101112131415
6
5
432
1
0
2048
512
32
16
4
8
1
16384
8192
4096
1024
128
256
64
Decimal Value
32768
2
ck771a
Questionable Power Event Enable RegisterStatus
STATus:QUEStionable:POWer:ENABle <num>
STATus:QUEStionable:POWer:ENABle?