Agilent E8462A Relay Multiplexer Command Reference
101
STATus
The
STATus
subsystem reports the bit values of the Operation Status Register. It
also allows you to unmask the bits you want reported from the Standard Event
Register and to read the summary bits from the Status Byte Register.
Subsystem Syntax
STATus
:OPERation
:CONDition?
:ENABle <
number
>
:ENABle?
[:EVENt?]
:PRESet
The
STATus
system contains four registers, two of which are under IEEE 488.2
control; the Standard Event Status Register (*ESE?) and the Status Byte Register
(*STB?). The operational status bit (OPR), service request bit (RQS), standard event
summary bit (ESB), message available bit (MAV) and questionable data bit (QUE)
in the Status Byte Register (bits 7, 6, 5, 4 and 3 respectively) can be queried with the
*STB?
command. Use the
*ESE?
command to query the "
unmask
" value for the
Standard Event Status Register (the bits you want logically OR'd into the summary
bit). The registers are queried using decimal weighted bit values. The decimal
equivalents for bits 0 through 15 are included in figure 3-1.
A numeric value of 256 executed in a
STAT:OPER:ENABle <
number
>
command
allows only bit 8 to generate a summary bit. The decimal value for bit 8 is 256.
The decimal values are also used in the inverse manner to determine which bits are
set from the total value returned by an
EVENt
or
CONDition
query. The "SWITCH"
driver exploits only bit 8 of Operation Status Register. This bit is called the scan
complete bit which is set whenever a scan operation completes. Since completion of
a scan operation is an event in time, you will find that bit 8 will never appear set when
STAT:OPER:COND?
is queried. However, you can find bit 8 set with the
STAT:OPER:EVEN?
query command.
Summary of Contents for E8462A
Page 2: ...x...
Page 10: ...8 Notes...
Page 11: ...9 Notes...
Page 12: ...10 Notes...
Page 15: ...Configuring the Agilent E8462A Multiplexer 13 Figure 1 1 Agilent E8462A Simplified Schematic...
Page 68: ...66 Using the Multiplexer...
Page 104: ...102 Agilent E8462A Relay Multiplexer Command Reference...
Page 118: ...116 Agilent E8462A Relay Multiplexer Command Reference...
Page 126: ...124 Agilent E8462A Scanning Voltmeter Application Examples Chapter 4 Notes...
Page 146: ...144 Register Based Programming...
Page 156: ...154 Index...