Agilent Technologies 664xA Manuale Utente

 

 Listening Formats

 <NRf>

 Extended format that includes <NR1>, <NR2> and <NR3>.  Examples: 273 273.
2.73E2

 <NRf+>

 Expanded decimal format that includes <NRf>, MIN and MAX.  Examples: 273
273. 2.73E2 MAX.  MIN and MAX are the minimum and maximum limit values
that are implicit in the range specification for the parameter.
 

 

 Table 2-2.  Suffixes and Multipliers

 Class

 Suffix

 Unit

 Unit with Multiplier
 

 Current

 A

 Ampere

 MA (milliampere)

 Amplitude

 V

 Volt

 MV (millivolt)

 Time

 S

 second

 MS (millisecond)

 Common Multipliers

 

 lE3

 K

 kilo

 

 1E-3

 M

 milli

 

 1E-6

 U

 micro

 
 Boolean Data
 Either form {1|0} or {ON|OFF} may be sent with commands.  Queries always return 1 or 0.
 

 OUTPut OFF
 CURRent:PROTection 1

 
 Character Data
 For query statements, character strings may be returned in either of the forms shown in Table 2-3, depending on the length
of the returned string.
 

 Table 2-3.  Character Data Formats

 <CRD>

 Character Response Data.  Permits the return of character strings.

 <AARD>

 Arbitrary ASCII Response Data.  Permits the return of undelimited 7-bit ASCII.  This data type has
an implied message terminator.
 

 Note:

 The IEEE 488.2 format for a string parameter requires that the string be enclosed within either single
('   ') or double ("   ") quotes.  Be certain that your program statements comply with this requirement.
 

 

 
 The examples given here are generic, without regard to the programming language or type of GPIB interface.  Because
SCPI commands are sent as ASCII output strings within the programming language statements, the SCPI syntax is
independent of both programming language and interface.

The examples are followed by sample program code written for three popular types of BASIC-
controlled GPIB interfaces.