Lake Shore Cryotronics Measure Ready M91 FastHall, Руководство пользователя

Страница: 80 / 195

70 c
HAPTER
4: Computer Interface Operation
MeasureReady™ M91 FastHall™ Measurement Controller
4.5 Command
Summary This section lists the interface commands in alphabetical order.
TABLE 4-5
Command parameter data types
bool
Boolean data type. Used to specify if a setting should be
enabled or disabled. A “0” or “OFF” are valid for disable, while a
“1” or “ON” are valid for enable.
NR1
Signed integer with no decimal point.
Example: 77
NRf
A number that can be represented in one of three ways.
Examples include an integer (77), a real number (77.325), or an
exponential number (7732.5E02)
NAMED
A finite group of strings representing valid parameters.
Examples include “TRIGger,” and “MANual” as valid parameters
for the
ANALog:OUTputFUNCtion?
command.
string
Character string enclosed in double quotes.
Number
Any numeric type. Can be an integer or a floating point number.
All command and query examples listed below are assumed to have a terminator included
at the end of the string.
4.5.1 Common
Commands The following commands and queries are specified in both IEEE 488.2 and SCPI-99.
*CLS
Command Format *CLS
Remarks Clears the bits in the status byte register and the standard event status register, clears
the error queue and terminates all pending operations. It does not clear the enable
registers.
*ESE
Command Format *ESE <data>
Parameter <data> Decimal value that is the sum of the binary-weighted val-
ues for the desired bits.
Data type is
NR1
Query Format *ESE?
Return Parameter <data> (see above)
Examples
Command *ESE 48 Enables command error and execution error flags
Query *ESE?
Query Response 32 Indicates that the command error flag is set
Remarks This command programs the standard event status enable register bits. Each bit is
assigned a bit weighting and represents the enable/disable mask of the correspond-
ing event flag bit in the standard event status register. To enable an event flag bit,
send the command *ESE with the sum of the bit weighting for each desired bit. Refer
to section 4.3.2.3 for a list of event flags.