Extech Instruments 7630 Operation Manual page 102

registers and if you wish to clear the register you must set it to a value of 0. Like the event
register, the enable register is represented as a decimal number that equals the binary-weighted
sum of all bits.
The enable register will clear to value of 0 at power up unless the *PSC 0 command had been
executed before power-off. The *PSC command tells the device whether or not it should
clear the enable registers at power-on. Using this command will allow SQRs to function
immediately after power-on.
Standard Event Register
Bit Binary Event Register
weight
0 1 Operation Complete
1 2 not used
2 4 Query Error
3 8 Device Error
4 16 Execution Error
5 32 Command Error
6 64 not used
7 128 Power On
*ESR?
6.4 Non Volatile Memory
The instrument saves each parameter in non-volatile memory when the file save "FS"
command is used to save the file. The non-volatile memory has a limited write cycle life,
therefore for programmers who wish to send all parameters before executing each test the
"FS" command should not be used. The parameters will be stored in the CPU's Random
Access Memory (RAM) until another memory location is selected. However, settings
written to RAM from GPIB/RS-232 mode will be lost when power is shut down. Parameter
changes to RAM are unlimited and will not effect the life of the internal non-volatile memory
chip.
96
Enable Summary Register
Register
ALL PASS
FAIL
ABORT
TEST IN PROCESS
Message Available (MAV)
Event Summary Bit (ESB)
Request Service (RQS) or
Master Summary Status (MSS)
PROMPT
*ESE *STB? | SPOLL
*ESE?
Status Byte Register
Enable
Register
not used
*SRE
*SRE?