Fluke 8842a 20. G8 Get Instrument Identification, Numeric Entry Command, Put Commands

Remote Programming 3

DEVICE-DEPENDENT COMMAND SET

3-20. G8 (Get Instrument Identification)

The G8 command copies the 8842A instrument identification into the output buffer in the format shown in Figure 3-6. The identification is represented by four comma separated fields that are interpreted in Table 3-1.

The first field indicates the manufacturer, the second indicates the instrument model number, the third is always zero, and the fourth indicates the version number of the IEEE-488 interface software.

Example	Explanation
FLUKE,8842A,0,V4.0 CR LF	This instrument is a Fluke 8842A with IEEE-
488 interface software version 4.0.
3-21. N (Numeric Entry Command)
Format	Explanation
N<numeric entry>	Where <numeric entry> is one of the following:
	<signed integer>
	<signed real number without exponent>
	<signed real number>E<signed exponent>
Example	Explanation
"N12001"	Enters the five-digit integer 12001
"N-1.23E2"	Enters -1.23 x 102
"N+154.33E-1"	Enters 1.5433 x 101

The N command enters numeric values for use with subsequent Put commands. The interpretation of the numeric value depends on which Put command it is used with.

The E can be used within an N command for entering an exponent of 10. The N can be used without an E, but an E requires a prior N. The exponent can be any integer from -9 to +9.

The mantissa may exceed 5-1/2 digits. The 8842A accurately calculates the appropriate exponent and then disregards all but the first 5-1/2 digits of the mantissa. However, a syntax error will occur if the numeric entry overflows the input buffer.

Example	Explanation
"N123456789"	Enters +1.23456 x 108

3-22. Put Commands

The Put commands P0 through P3 set up the 8842A’s configuration and operating modes by entering ("putting") information in the appropriate registers. The put commands are described further in the following paragraphs.

3-23. P0 (Put Instrument Configuration)

FormatExplanation

N<frst>P0	Where <frst> is a four-digit integer interpreted as arguments for the F,
	R, S, and T commands.
Example	Explanation

3-15