Using IO Interfaces

RS-232 Programming Interface Examples

Interface Check Using VISA and C

This portion of the example program “Interface Check Using VISA and C” on page 51, uses VISA library functions to communicate with the signal generator. The program verifies that the RS- 232 connections and interface are functional. In this example the COM2 port is used. The serial port is referred to in the VISA library as ‘ASRL1’ or ‘ASRL2’ depending on the computer serial port you are using.

The following program example is available on the signal generator Documentation CD- ROM as rs232ex1.cpp. For the full text of this program, refer to “Interface Check Using VISA and C” on page 132 or to the signal generator’s documentation CD- ROM.

int baud=9600;// Set baud rate to 9600

ViSession defaultRM, vi;// Declares a variable of type ViSession

//for instrument communication on COM 2 port ViStatus viStatus = 0;

//Opens session to RS-232 device at serial port 2 viStatus=viOpenDefaultRM(&defaultRM);

viStatus=viOpen(defaultRM, "ASRL2::INSTR", VI_NULL, VI_NULL, &vi);

viStatus=viEnableEvent(vi, VI_EVENT_IO_COMPLETION, VI_QUEUE,VI_NULL);

viClear(vi);// Sends device clear command

//Set attributes for the session viSetAttribute(vi,VI_ATTR_ASRL_BAUD,baud); viSetAttribute(vi,VI_ATTR_ASRL_DATA_BITS,8);

Queries Using HP Basic and RS-232

This portion of the example program “Queries Using HP Basic and RS- 232” on page 51, example program demonstrates signal generator query commands over RS- 232. Query commands are of the type *IDN? and are identified by the question mark that follows the mnemonic.

Start HP Basic, type in the following commands, and then RUN the program:

The following program example is available on the signal generator Documentation CD- ROM as rs232ex2.txt. For the full text of this program, refer to “Queries Using HP Basic and RS- 232” on page 134 or to the signal generator’s documentation CD- ROM.

190

OUTPUT

9;"*IDN?"

! Querys the sig gen ID

200

ENTER 9;Str$

! Reads the ID

 

210

WAIT 2

 

! Waits 2 seconds

220

PRINT "ID =",Str$

! Prints ID to

the screen

230

OUTPUT

9;"POW:AMPL -5 dbm" ! Sets the the

power level to -5 dbm

240

OUTPUT

9;"POW?"

! Querys the power level of the sig gen

Agilent N518xA, E8663B, E44x8C, and E82x7D Signal Generators Programming Guide

51

Page 60 Page 62
Page 61
Image 61
Agilent Technologies N5181A/82A, N5183A MXG, E8663B Interface Check Using Visa and C, Queries Using HP Basic and RS-232
Page 60 Page 62

N5183A, N5183A MXG, E8663B, N5181A/82A specifications

Agilent Technologies is renowned for its innovative solutions in electronic test and measurement equipment. Among its offerings are several signal generators including the N5181A, N5182A, E8663B, and N5183A MXG. These models are distinguished not only by their performance but also by their versatility across various applications in communications, aerospace, and electronics.

The Agilent N5181A and N5182A, part of the MXG family, are highly versatile signal generators known for their exceptional frequency performance and flexibility. The N5181A operates from 100 kHz to 6 GHz, while the N5182A extends that range up to 12 GHz. They provide high fidelity signals with low phase noise, making them ideal for the development and testing of RF components and systems. These generators support a wide variety of modulation formats, including AM, FM, PM, and pulse modulation, catering to diverse application needs.

The E8663B, meanwhile, is designed for the range of 250 kHz to 3 GHz and is also recognized for its high-performance features. Its built-in capabilities for modulation make it effective for testing wireless devices, ensuring that signals can be simulated accurately in both laboratory and field environments. It is especially beneficial for users requiring a straightforward and efficient solution with high reliability.

The N5183A MXG signal generator enhances the lineup with frequency coverage up to 6 GHz and advanced capabilities. It integrates various modulation capabilities while ensuring high signal integrity. Its architecture is tailored for both production test environments and research applications, providing users with the flexibility to adapt to changing testing requirements.

Common characteristics across these models include a user-friendly interface that simplifies configuration and operation. They are often equipped with LAN and USB interfaces for easy remote control and integration into automated test systems. The robustness of these generators allows them to perform reliably in challenging environments, making them essential tools in laboratories, manufacturing floors, and field testing scenarios.

In summary, Agilent's signal generators, including the N5181A, N5182A, E8663B, and N5183A MXG, represent a blend of advanced technology, flexibility, and precision. These instruments are vital in facilitating the evolution of cutting-edge communication technologies, ensuring that designers and engineers can confidently meet the demands of modern electronics.
Top Page Image Contents