68 Chapter 2
Status Registers
Use Status Registers to Determine the State of Analyzer Events and Conditions
Figure 2-5 Service Request Enable Register
NOTE The service request enable re gister presets to zeros (0).
Standard Event Status Register
The standard event status register is used to determine the specif ic event that sets
bit 5 in the status byte register. The standard event status register does not have
negative and positive transition registers, nor a condition register. Use the IEEE
common commands at the beginning of Chapter 5, “Language Reference,” in this
guide to access the register.
To query the standard event status register, send the *ESR command. The response
will be the decimal sum of the bits which are set to 1. For example, if bit number 7
and bit number 3 are set to 1, the decimal sum of the 2 bits is 128 plus 8. So the
decimal value 136 is returned.
See “Setting and Querying the Status Register” on page65 in this chapter for more
information.