HP 53150A Series Programming Manual page 69

Chapter 3 Programming Your Counter for Remote Operation
Status Reporting
Output Queue is not empty. This bit is set FALSE (zero) when the
Output Queue is empty.
• Bit 5 (ESB) summarizes the Standard Event Status Register.
This bit indicates whether or not one of the enabled Standard Event
Status Register events have occurred since the last reading or clearing
of the Standard Event Status Register.
This bit is set TRUE (one) when an enabled event in the Standard
Event Status Register is set TRUE. Conversely, this bit is set FALSE
(zero) when no enabled events are set TRUE.
• Bit 6 (RQS/MSS) summarizes IEEE 488.1 RQS and Master
Summary Status.
When a serial poll is used to read the Status Byte Register, the RQS
bit indicates if the device was sending SRQ TRUE. The RQS bit is set
FALSE by a serial poll.
When *STB? is used to read the Status Byte Register, the MSS bit
indicates the Master Summary Status. The MSS bit indicates whether
or not the Counter has at least one reason for requesting service.
• Bit 7 (OSB) summarizes the Operation Status Event Register.
This bit indicates whether or not one or more of the enabled Operation
events have occurred since the last reading or clearing of the
Operation Status Event Register.
This bit is set TRUE (one) when an enabled event in the Operation
Status Event Register is set TRUE. Conversely, this bit is set FALSE
(zero) when no enabled events are set TRUE.
Service Request Enable Register
The Service Request Enable Register selects which summary bits in the
Status Byte Register may cause service requests as shown in
Figure 3-7.
Use *SRE to write to this register and *SRE? to read this register.
Use *SRE 0 to clear the register. A cleared register does not allow status
information to generate the service requests. (Power-on also clears this
register.)
Programming Guide 3-29