HP E1563A, User Manual, Page: 85 / 166

Digitizer Command Reference 85
Operation Data
Register
The OPERation data register indicates operational status as follows:
Status Byte
Register
The OPR Operational Status bit, RQS Request Service bit, ESB Standard Event
summary bit, MAV Message Available bit and QUE Questionable Data bit in the
Status Byte Register (bits 7, 6, 5, 4 and 3 respectively) can be queried with the *STB?
command but will be executed when previous commands are finished. Using the
VISA I/O library, you can query the value of the status byte without going through
the digitizer’s command parser by using the viReadSTB function call. The OPR bit
is the summary bit for the Operation Data Register. The QUE bit is the summary bit
for the Questionable Data Register.
Standard Event
Register
Use the *ESE? command to query the "unmask" value for the Standard Event Status
Register (bits you want logically OR'd into the summary bit). Query using decimal
weighted bit values.
:OPERation:CONDition?
STATus:OPERation:CONDition? returns a decimal-weighted number
representing the bits set in the Operation Data condition register.
:OPERation[:EVENt]?
STATus:OPERation[:EVENt]? returns a decimal-weighted number representing
the bits set in the Operation Data/Signal Register's event register. This command
clears all bits in the event register when executed.
:OPERation:ENABle
STATus:OPERation:ENABle <unmask> enables (unmasks) bits in the Operation
Data/Signal Register's enable register to be reported to the summary bit (setting
Status Byte Register bit 3 true). The event register bits are not reported in the Status
Bytes Register unless specifically enabled.
:OPERation:ENABle?
STATus:OPERation:ENABle? returns a decimal-weighted number representing
the bits enabled in the Operation Data/Signal Register's enable register signifying
which bits will set OPR (bit 7) in the Status Byte.
Bit # Description
0 CAL:STATe ON
(calibration in progress)
5 waiting for trigger
8 pretrigger count is met
9 measurement complete