HP 1670A Series User manual

HP 1660C/CS-Series and ·
HP 1670A-Series
Logic Analyzers
LAN User's Guide

LAN User's Guide
Publication nwnber 01660-97018
First edition, November 1995
For Safetyinformation, Warranties and Regulatory information, see the pages
behind the index
© Copyright Hewlett-Packard Company 1993-1995
All Rights Reserved
HP 1660C/CS-Series and
HP 1670A-Series
Logic Analyzers

Introducing the LAN Interface
The HP Logic Analyzer LAN interface lets you connect your logic analyzer to
an Ethernet network that uses TCP/IP. With the LAN Interface, you can:
• Set up and run measurements using the logic analyzer's XWindow
interface.
• Copy measurement data from the logic analyzer to your computer using
File Transfer Protocol program (ftp) or Network File System (NFS).
• Save and restore configurations.
• Program the logic analyzer.
Requirements
In order to use your HP logic analyzer on the LAN, you need the following
equipment and software:
• HP 1660C/CS-series logic analyzer with LAN option or HP 1670A-series
logic analyzer.
• Ethernet local area network using TCP/lP protocol.
• If you are using a PC, NFS program or ftp program.
• If you want to use the logic analyzer's XWindow interface, X server
program running on your computer.
Characteristics
Physical Connection
RJ-45 connector for direct connection to lOBase-T ("ethertwist")
networks
BNC connector for direct connection to 10Base2 ("thinlan") networks
Supported Protocols
ii
Transmission Control Protocol/lnternet Protocol (TCP/lP)
Network File System (NFS)
File Transfer Protocol (ftp)
XWindow System Version 11, release 5 (X11R5)
Simple Network Management Protocol (SNMP)

In This Book
This book shows you how to coIIDect,
use, and troubleshoot your HP logic
analyzervia a Local Area Network (LAN)
connection. This book contains the
following chapters:
• Chapter 1 provides information about
connecting the logic analyzer to the
network. To effectively use this
chapter, you should be familiar with
your network setup and operation.
• Chapter 2 shows you howto access
the logic analyzer's file system. This is
a prerequisite for some ofthe other
things you can do with a logic analyzer
on the network.
• Chapter 3 shows you how to display
the analyzer interface on an XWindow
server, and describes the basics of
using the interface.
• Chapter 4 shows you how to retrieve
measurement data, screen images, and
status information from your logic
analyzer on the LAN, and how to copy
and restore configurations.
• Chapter 5 shows you methods for
programming the logic analyzer via the
network connection.
• Chapter 6 contains additional
infonnation on the logic analyzer's
directory structure and dynamic files.
• Chapter 7 describes what to do if you
have a problem using the logic
analyzer on your network.
Connecting and Configuring
I
l":l Accessing the Logic Analyzer File I
LJ System
Using the X Window Interface
I
Retrieving and Restoring Data
I
Programming the Logic Analyzer
I
Concepts
I
Troubleshooting
I
Glossary
I
Index
I
iii

See Also
The Logic Analyzer Training Kit if you are unfamiliar with the basic
operation of the logic analyzer.
The User's Guide for your logic analyzer for information on using the logic
analyzer to make measurements.
The Programmer's Guide for your logic analyzer for detailed information on
programming the analyzer. The Programmer's Guide can be ordered from
your Hewlett-Packard Sales Office.
UNIX® is a registered trademarkin the United States and other countries,
licensed exclusively through X/Open Company Limited.
MS® and MS-DOS® are U.S. registered trademarks of Microsoft Corporation.
MS Windows® and Windows® are U.S. registered trademarks ofMicrosoft
Corporation.
Postscript™ is a trademark ofAdobe Systems Incorporated which may be
registered in certain jurisdictions.
iv

Contents
1 Connecting and Configuring
To connect to your network 1-3
To configure the network addresses 1-4
To verify connectivity with the ping utility 1- 7
To mount the logic analyzer 1-8
2 Accessing the Logic Analyzer File System
To mount the file systemvia NFS 2-3
To access the file system via ftp 2-8
3 Using the X Window Interface
To start the interface 3-3
To close the interface 3-8
To load the custom fonts 3-10
Additional Information 3-12
4 Retrieving and Restoring Data
To copy ASCII measurement data 4-3
To copy raw measurement data 4-5
To restore raw measurement data 4-6
To strip LIF structure from raw measurement data 4- 7
To copy screen images from \systern\graphics 4-9
To copy status information from \status 4-10
To copy configurations from setup. raw 4-12
To restore configurations 4-13
5 Programming the Logic Analyzer
To set up for Ethernet LAN programming 5-4
To enter corrunands directly using telnet 5-5
To copy corrunands to \systern\prograrn 5-7
To write programs that open \systern\prograrn 5-9
To write programs that open the corrunand parser socket 5-12
1

Contents
6 Concepts
Directory structure of the logic analyzer's file system 6-3
Dynamic files 6-6
LAN-related fields in the logic analyzer's menus 6- 7
7 Troubleshooting
Troubleshooting the Initial Connection 7-3
Assess the problem 7-3
Troubleshooting in a workstation environment 7 -5
Troubleshooting in an MS-DOS environment 7-8
Troubleshooting in an MS Windows environment 7-11
Verify the logic analyzer performance 7-14
Status Number 7-16
Network Status Information 7-19
Solutions to Common Problems 7-21
If you cannot connect to the logic analyzer 7-21
If you cannot mount the logic analyzer file system 7 -22
If you cannot access the file system via ftp 7-22
If you cannot start the X Window interface 7-23
If your XWindow looks odd 7 -23
If you cannot copy files from the logic analyzer 7-23
If you cannot restore raw files 7-24
If you cannot telnet to the command parser socket 7 -24
If you get an "operation timed-out" message 7-25
If the logic analyzer begins to operate slowly 7 -25
If the logic analyzer does not respond 7 -25
If all else fails 7 -25
Getting Service Support 7-26
HP on-site service 7 -26
Return to HP service 7 -26
2

1 I
Connecting and Configuring

Connect
Configure
Ping
Mount
Connecting and Configuring
In order to use your logic analyzer's network capabilities, you need to
connect it to your network and configure the logic analyzer.
The following chart shows an overview of the process.
Connect the RJ-45 or BNC connector from
your network, then turn on the logic
analyzer. I
Setup the configuration menus.
j_
Verify connectivity with the ping utility.
Ping OK?
Ives
Mount the logic analyzer. Mount OK?
!Yes
Ready to use.
1-2
No
No
Go to chapter 7,
"Troubleshooting.
11
Go to chapter 7,
'Troubleshooting.
11
I

To connect to your network
1 Tum off the logic analyzer.
Connecting and Configuring
To connect to your network
2 Connect the analyzer to your network using an RJ-45 or BNC
connector.
Ethertwist and thinlan are the two most common types ofLAN network
connection. Ethertwist uses unshielded twisted pair and an RJ-45 connector,
and resembles a standard modular phone line. Thinlan uses coaxial cable. If
you are unsure what your network uses for its physical connection, contact
your local network administrator.
The logic analyzer LAN ports are on the back panel. The RJ-45 connector
goes in the port labeled "LAN-TP" and the BNC attaches to the port labeled
"LAN-BNC".
3 Tum on the logic analyzer.
1-3
I

Connecting and Configuring
To configure the network addresses
To configure the network addresses
You can configure the logic analyzer to work with your network from the
front panel. Infonnation entered in the configuration menus will be stored in
nonvolatile memory.
1 Go to the System External1/0 men~ and select LAN Settings.
a Turn on the analyzer and wait until the power-up tests are complete.
b Press the System key.
c In the System External1/0 menu, select the LAN Settings box.
•llD(
External IJO
l
Connected To=
L:J~
Printer (settingsJ
102 Chrinnel s
100 MHz STATE
500 MHz TIMING
(Ethernet)
~Connected To'
Controller
M (Settings
~ (01sconnec t
X-H 1 ndow
2 Chennel s of
IGS/s Single Shot
Osc 111 oscope
LAN Set tings--+-+------------
RS232 Sett in gs
LAN Settings
SYMBOL UTIL ITV
HPIB Set tings
System External 1/0 menu
1-4

Connecting and Configuring
To configure the network addresses
2 Set up the LAN Settings menu.
Len :=,ett1ng·:
In ter-n.:i I Set. t 1ngs
1 Ltrn Port LAM TF'
15.6.253.11?· ::: Analy::er IP Address (
~=====:
•
" Gateway IP Addre·~·; ( n.r•.O.l1 I
======s.a.~
.:i File Timeout: ( 1.5 s ]
5. AnallJZfH namE" ( 1661CS 1
E>·:lernal Settings
6 Help i..nth (Ho .ts Tatile ·.I and {PC Setting~. _]
(Show LAN Connec t.1 on~._] f Ethernet Stat.is ti cs. _:I ~J
LAN Settings menu
Lan Port
Analyzer IP Address
Gateway IP Address
File Timeout
Analyzer Name
The LAN Port toggles between LAN TP and LAN BNC. Set it
to whichever type you are using for the connection.
TCP/IP uses the Internet Protocol (IP) Address for
communication between network nodes and requires this
entry. Each IP address on anetwork must be unique -
contact your system administrator if you need to have one
created for the logic analyzer. The logic analyzer responds to
messages sent to this IP address.
Gateways act as connections between different physical
subnets. If the logic analyzer is on adifferentsubnet than the
computer you wish to use itwith, you need to enter a gateway
address.
This is not the same as the networktimeout, which is set on
the computer. The logic analyzer file timeout is how long the
analyzer keeps afile in the active portion of memory. For slow
network connections, a large file timeout decreases the total
time for afile transfer. Too high afile timeout for afast
network connection can actually slow file transfers because
too much is in active memory. A good guideline for file
timeout is 150% ofthe average time it takes for packets to go
from source to destination.
The Analyzer Name is for user reference only. It appears in
the status files of the logic analyzer, and in the XWindow
display. It is notthe same as the IP name.
1-5
I

Connecting and Configuring
To configure the network addresses
3 If necessary, add the logic analyzer to your local network
configuration.
If you are doing a point-to-point connection, this step is unnecessary because
the computer and the logic analyzer only communicate with each other.
For UNIX networks and PC networks based on a UNIX model, the network
software requires an entry for the logic analyzer before another computer can
talk to it. These entries are usually kept in a file named I etc/hosts. The
I etc /hosts file also associates an alias with the IP address so that you can
use a meaningful name rather than the IP address.
Other styles of PC networks have different conventions. Consult your LAN
documentation or yourlocal systemadministrator to see if you need to do
anything else.
1-6

Connecting and Configuring
To verify connectivity with the ping utility
To verify connectivitywith the ping utility
Use the ping utility to verify that the logic analyzer is on your network.
Refer to your network documentation for the exact syntax.
•UNIX
ping [IP addresslsymbolic name]
• MS-DOS
ping [IP addresslsymbolic name]
• MS Windows
For a Windows environment, select the ping icon in your network menu.
Refer to your network documentation for more information about using the
ping utility.
1-7
I

Connecting and Configuring
To mountthe logic analyzer
To mount the logic analyzer
Before Mounting
You need to wait at least 15 seconds after the Analyzer Configuration menu is
displayed before attempting to mount If you try to mount too soon, you will
receive an error message.
You can mount the logic analyzer on your network for two different levels of
use, control or data. The logic analyzer accommodates one control user and
multiple data users. Control allows users to read and write files to and from
the analyzer, while data allows users to only read files from the file system.
Data users can also write files to the disk drives of the logic analyzer.
If you have trouble, refer to chapter 7, "Troubleshooting."
For the exact syntax of the mount command for mount, refer to your network
documentation.
Mounting and Unmounting
You must unmount the logic analyzer before turning it off. After unmounting,
you can mount the analyzer 15 seconds after the Analyzer Configuration menu
is displayed when powering up the instrument. You can write anetwork script
that executes an unmount and mount procedure.
1-8

Connecting and Configuring
To mountthe logic analyzer
•UNIX
For UNIX, use your network's command for an NFS mount.
For example:
mount [analyzer name:]/[controlldata] [mount point]
Some UNIX workstations will not accept a straight IP address. You must add
an aliased name for the logic analyzer to the host file, then use that name in
your mount command.
Refer to your network documentation for more information.
• MS-DOS
For a PC using MS-DOS and running PC-NFS, use a form of the net use
command.
For example, PC-NFS uses:
net use [drive specifier] [IP address or a named alias]\
[control I data]
Refer to your PC-based NFS documentation for more information.
• MS Windows
For an MS Windows environment, refer to your Windows-based NFS
documentation and File Manager documentation for mounting instructions.
1-9
I

1-10

2
Accessing the Logic Analyzer
File System
I

Accessing the Logic Analyzer File System
This chapter shows you how to:
• Mount the file system via NFS.
• Access the file systemvia ftp.
This chapter assumes that the logic analyzer is physically connected to your
local area network. Ifit is not connected, refer to Chapter 1for information on
how to connectthe system.
Control User vs. Data User
You can access the logic analyzer file system as either the control user
or a data user.
Control User
• The control user can send programming commands.
• The control user has read and write access to the file system.
• There can only be one control user at any time.
Data User
• The data user cannot send programming commands.
• The data user has read access to the entire file system, but can only
write to \system\disk\hard and \system\disk\flexible
directories (the logic analyzer disk drives).
• Multiple data users can access the logic analyzer simultaneously.
Password and File Protection
There is no password protection built into the logic analyzer. This
means that files are not protected against either deletion or being
written over.
2-2

Accessing the Logic Analyzer File System
To mount the file system via NFS
To mount the file system viaNFS
The logic analyzer must be on and completely booted up before you can mount
the file system. Once power is applied and the Analyzer Configuration menu is
displayed, allow an additional 15 seconds before attempting to mount the
system.
Be sure to unmount the logic analyzer's file system before turning off the logic
analyzer. If you don't do this, you may get a "stale NFS file handle" error
message the next time you try to mount. If you get this message, unmount the
file system and try mounting again.
From Computers Running the UNIX Operating System
The syntax of the mount commandis typically
mount [symbolic name I IP address] :/[controlldata] /[directory
name]
The symbolic name is the host name ofthe logic analyzer as set up byyour
system administrator. Typically, this name is found in the /etc/hosts file
on your computer or returned by a name server. It is equivalent to the logic
analyzer's IP (Internet Protocol) address.
The control or data option specifies the type ofaccess you want.
The directory name is the name of an empty directory in your computer's file
system to which the logic analyzer's file system will be mounted.
See the example on the next page.
2-3
I