DATA I/O FORMATS

GPIB OPERATION

HP and ML4803 emulation commands on the other hand, do not have to have a space between the command header and the parameter, or commas between the parameters.

The format for HP emulation commands is:

<command header><parameter 1><parameter n>...

The end of the command text must be terminated with either a line feed character (0Ah, decimal 10) or a GPIB End of Transmission State (EOI), or both.

Data input and output formats and templates referred to throughout this chapter are delimited with the less-than and greater-than characters (< >). Optional pa- rameters and suffix characters are delimited with brackets ([ ]). These characters are not part of the data and are only used in this text to distinguish the data ele- ments they represent.

All the commands which allow a level to be set as a value argument are floating point values which can use the E-0x convention or a suffix multiplier. The GPIB standard [units] convention (i.e., MS for milliseconds, etc.) IEEE codes and for- mats have been implemented for the suffix units and multipliers. The suffix unit is always allowed but is not required and is shown in brackets where appropriate.

Table 6-1lists the numeric data suffix mnemonics for the ML2430A Series Power Meter. These mnemonics are used when entering numeric data with GPIB com- mands (use of these codes is optional).

Commands which are not floating point, but integer, are:

 

Suffix Multipliers

Suffix Units

 

 

 

 

 

 

 

 

Definition

Mnemonic

Definition

Mnemonic

 

 

 

 

 

 

 

 

1E18

EX

Decibels

DB

 

 

 

 

 

 

 

 

1E15

PE

dB ref to 1 mW

DBM

 

 

 

 

 

 

 

 

1E12

T

dB ref to 1 ￿V

DBUV

 

 

 

 

 

 

 

 

1E9

G

Mega Hertz

MHZ

 

 

 

 

 

 

 

 

1E6

MA

Percent

PCT

 

 

 

 

 

 

 

 

1E3

K

Seconds

SEC

 

 

 

 

 

 

 

 

1E-3

M

Seconds

S

 

 

 

 

 

 

 

 

1E-6

U

Volts

V

 

 

 

 

 

 

 

 

1E-9

N

Watts

W

 

 

 

 

 

 

 

 

1E-12

P

Hertz

HZ

 

 

 

 

 

 

 

 

1E-15

F

 

 

 

 

 

 

 

 

 

 

1E-18

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 6-1.Numeric Data Suffix Mnemonics

6-2

ML2430A OM

 

 

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Anritsu ML2430A operation manual Data I/O Formats, Gpib Operation, Suffix Multipliers Suffix Units