Agilent Technologies 11896A, User'S And Service Manual

Page: 86 / 140

Programming
Common Commands
*ESR
(Event Status Register)
The *ESR query returns the contents of the Standard Event Status Register .
When you read the Event Status Register , the value returned is the total
bit weights of all of the bits that are high at the time you read the byte .
T able 4-2 shows each bit in the Event Status Register and its bit weight.
Reading the register clears the Event Status Register .
Query Syntax: *ESR?
Returned F ormat: < status >< NL>
Where: < status > ::= 0 to 255 (integer{NR1 format)
Example: OUTPUT 720;\*ESR?"
ENTER 720;Event
PRINT Event
T able 4-2. Standard Event Status Register
Bit
Bit
Weight
Bit
Name Condition
7 128 PON 0 = no power-on detected
1 = power-on detected
6 64 URQ 0 = no front-panel ke y has been pressed
1 = a front-panel ke y has been pressed
5 32 CME 0 = no command errors
1 = a command error has been detected
4 16 EXE 0 = no execution error
1 = an execution error has been detected
3 8 DDE 0 = no device dependent errors
1 = a device dependent error has been detected
2 4 QYE 0 = no query errors
1 = a query error has been detected
1 2 TRG 0 = no trigger or AUT O (autolevel)
1 = trigger (can be 1 only in Normal, Single , TV trigger modes)
0 1 OPC 0 = operation is not complete
1 = operation is complete
0 = F alse = L ow 1 = T rue = High
4-21