Agilent Technologies N5242A, Руководство по обслуживанию

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4-18 Service Guide N5242-90001
Troubleshooting PNA Series Microwave Network Analyzers
Rear Panel Troubleshooting N5242A
5. On the
Windows Taskbar
menu, click
Start
then point to
Programs, National Instruments
NI-488.2,
and then click
Explore GPIB
to open the
Measurement & Automation
window.
6. On the left side of the
Measurement & Automation
window under folders:
a. Click the plus sign to expand the
Measurement & Automation
folder.
b. Click the plus sign to expand the
Devices and Interfaces
folder.
c. Right click
GPIB0 (AT-GPIB/TNT)
to open a submenu.
7. On the submenu, click
Scan for Instruments
to run the test.
8. The state of all the peripherals found on the bus is returned.
9. If problems are detected, check the connections of all GPIB cables, and check all the
GPIB addresses of the instruments on the bus.
NOTE
Address Information
• Each device must have its own unique address.
• The network analyzer’s default GPIB address in the controller mode is 21.
• The address set on each device must match the one recognized by the
analyzer (and displayed).
Refer to the manual of the peripheral to read or change its address.
Troubleshooting Systems with Controllers
Passing the preceding test indicates that the analyzer's peripheral functions are operating
normally. Therefore, if the analyzer has not been operating properly with an external
controller, check the following:
• The GPIB interface hardware is incorrectly installed or not operational. (Refer to the
embedded help in your analyzer.)
• The programming syntax is incorrect. (Refer to the embedded help in your analyzer.)
LAN Troubleshooting
Problems with the Local Area Network (LAN) can be difficult to solve. Software and
protocol problems can make it difficult to determine whether the analyzer's hardware is
working properly, or if there is a problem with the LAN or cabling.
The purpose of this section is to determine if the analyzer's hardware is functioning
properly. While the turn-on self-test verifies some LAN hardware functionality, it is limited
to internal testing only. Incorrect IP addresses will prevent proper operation. Improper
subnet masks may allow only one-way communication, while improper gateway addresses
may exclude outside LAN access.