Agilent Technologies 4294A Service Manual download pdf (Page 176)

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176 Chapter 12

Using LAN

Controlling the Agilent 4294A

Control from a program

To control the 4294A from a program stored on an external controller, make connection by

use of the socket of Port 5025.

NOTE You cannot use some of functions usable within GPIB, such as service request, by way of

LAN.

Control with HP VEE

In HP VEE, using To/From Socket makes connection with the socket of Port 5025 so that

you can control the 4294A.

Figure 12-4 shows an example (in which the IP address

1.10.100.50 is assigned to the 4294A). Type 5025 in the Connection Port field (1 in Figure

12-4) and type either the IP address or the host name of the 4294A in the Host Name field

(2 in Figure 12-4).

Figure 12-4 An example of control using HP VEE

Control with languages, such as C and Visual Basic

Socket programming allows you to control the 4294A through socket programming from C

language in a UNIX environment, or Visual C++ or Visual Basic in a Windows

environment. Socket programming requires a library for network connection with TCP/IP

protocol. For this purpose, BSD (Berkeley Software Distribution) Sockets API is supplied

in the UNIX environment, while WinSock (WinSock1.1, or WinSock2.0), prepared by

porting BSD Sockets onto Windows and extending it, in the Windows environment.

The sample program disk contains a sample program (ctrl_lan.bas: Microsoft Excel file)

for control with Visual Basic (VBA macro).

First, let us begin with how to use this program. Opening this file will display the screen

shown in

Figure 12-5. Below are described how to operate each part of this screen.

1 2 ... 171 172 173 174 175 176 177 178 179 180 181 ... 517 518

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