Agilent Technologies 664xA User Manual

 Status Reporting     51

 

 

 
 Figure 4-1 shows the status register structure of the power supply.  The Standard Event, Status Byte, and Service Request
Enable registers and the Output Queue perform standard GPIB functions as defined in the IEEE 488.2 Standard Digital
Interface for Programmable Instrumentation.  The Operation Status and Questionable Status registers implement status
functions specific to the power supply.  Table 4-2 and Figure 4-1 show the bit configuration of each status register.
 

 
 The Operation Status registers record signals that occur during normal operation.  The group consists of the following
registers:
 

• 

A Condition register that holds real-time status of the circuits being monitored.  It is a read-only register.

• 

A PTR/NTR (positive transition/negative transition) Filter that functions as described under

STAT:OPER:NTR|PTR COMMANDS in "Chapter 3 - Language Dictionary".  This is a read/write register.

• 

An Event register that latches any condition that is passed through the PTR or NTR filters.  Reading the Event

register clears it.

• 

An Enable register that functions as described under STAT:OPER:ENAB in "Chapter 3 - Language

Dictionary".  This is a read/write register.

 
 The outputs of the Operation Status group are logically-ORed into the OPER(ation) summary bit (7) of the Status Byte
register.

 
 Commands that access this group are derived from the STAT:OPER commands described in "Chapter 3 - Language
Dictionary" and summarized in Table 4-1.
 

 Table 4-1. Status Operation Commands

 Register

 Command

 Query

 Cleared By

 Condition

 (None)
 

 STAT:OPER:COND?

 Cannot be cleared

 PTR Filter

 STAT:OPER:PTR <NRf>
 

 STAT:OPER:PTR?

 Programming 0

 NTR Filter

 STAT:OPER:NTR <NRf>
 

 STAT:OPER:NTR?

 Programming 0 or
STAT:PRES

 Event

 (None)
 

 STAT:OPER:EVEN?

 Reading or *CLS

 Enable

 STAT:OPER:ENAB <NRf>
 

 STAT:OPER:ENAB?

 Programming 0