Agilent Technologies E5805A User manual

Agilent Technologies

Agilent E5805A USB/RS232 Interface for Windows - 4 Port

Agilent USB/RS232 Interface

for Windows® - 4 Port

E5805A

Installation

Guide

E5805A USB/RS232 Interface

Notices

No part of this manual may be reproduced in

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tronic storage and retrieval or translation

into a foreign language) without prior agree-

ment and written consent from Agilent

Technologies, Inc. as governed by United

States and international copyright laws.

Manual Part Number

E5805-90001

Edition

Second Edition, September 22, 2007

Printed in Malaysia

Agilent Technologies, Inc.

815 14th Street SW

Loveland, CO 80537

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Safety Notices

CAUTION

A CAUTION notice denotes a haz-

ard. It calls attention to an operat-

ing procedure, practice, or the like

that, if not correctly performed or

adhered to, could result in damage

to the product or loss of important

data. Do not proceed beyond a

CAUTION notice until the indicated

conditions are fully understood and

met.

WARNING

A WARNING notice denotes a

hazard. It calls attention to an

operating procedure, practice, or

the like that, if not correctly per-

formed or adhered to, could result

in personal injury or death. Do not

proceed beyond a WARNING

notice until the indicated condi-

tions are fully understood and

met.

Windows is a US Registered trademark of

Microsoft Corporation.

USB-IF is a trademark of Universal Serial

Bus Implementers Forum, Inc.

E5805A USB/RS232 Interface

Contents

Table of Contents

E5805A USB/RS232 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Cabling the E5805A USB/RS232 Interface . . . . . . . . . . . . 2

Installing the USB Hub & E5805A USB/RS232 Drivers . . . . . 3

Driver Installation For Windows XP . . . . . . . . . . . . . . . . . . 4

Driver Installation For Windows 2000 Users . . . . . . . . . . . 4

Driver Installation For Windows 98, and Me Users . . . . . 5

Interpreting the System Status Light . . . . . . . . . . . . . . . . . . . . 6

The E5805A USB/RS232 Interface Utility Program . . . . . . . . 7

For all Windows Operating Systems . . . . . . . . . . . . . . . . . 7

Understanding the E5805 and USB Hubs . . . . . . . . . . . . . . . 14

Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Appendix A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Regulatory and Other Information . . . . . . . . . . . . . . . . . . . . . 21

Japanese Version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

E5805A USB/RS232 Interface

E5805A USB/RS232 Interface 1

1

Installation Guide for the Agilent

USB/RS232 Interface

E5805A USB/RS232 Interface 2

Installing the E5805A USB/RS232 Interface Drivers 3

Interpreting the System Status Light 6

The E5805A USB/RS232 Interface Utility Program 7

Understanding the E5805A and USB Hubs 14

Support 16

2 E5805A USB/RS232 Interface

E5805A USB/RS232 Interface

The E5805A USB/RS232 Interface is an intelligent, stackable

expansion module that connects to a PC or server running

Windows® 98SE, Me, 2000, or XP via the Universal Serial Bus

(USB), providing high- speed serial connectivity.

Cabling the E5805A USB/RS232 Interface

Type A Type B

Plug the Type A end of the USB cable into the USB port located

in the back of your PC or into an available USB port on a

standard hub. Plug the Type B end of the USB cable into the

back of the E5805A USB/RS232 Interface.

If the drivers are not already installed, go to "Installing the

E5805A USB/RS232 Interface” on the next page.

E5805A USB/RS232 Interface

E5805A USB/RS232 Interface 3

Installing the E5805A USB/RS232 Interface Drivers

The E5805A ships with the Driver and the Automation- Ready

CDs. The Driver CD software must be installed for the product

to operate. Once the Driver software is installed, the E5805A

can be attached to a USB port. Your PC should be able to

connect to it, and the four RS232 ports on the E5805A should

appear as additional Windows® COM ports. These ports can be

used by your PC to connect serial instruments and general

purpose devices to the four port RS- 232 converter. The IO

Libraries CD shipped with the E5805A allows you to use I/O

libraries (for example VISA, VISA COM, and SICL) to do

“instrument style” programming of instruments or devices. It

also provides a suite of tools for connection management and

interactive instrument control. If you are using VISA or other

T&M specialized software to program instruments, or if you are

using application software that does instrument control, you

may want to also install the IO Libraries Suite.

NOTE

Note: Drivers may not have received “Designed for Windows 2000”

certification. If so, Windows displays a warning: Digital Signature Not

Found. While the drivers may not be Windows certified, they have been

thoroughly tested. Select “Yes” to continue with driver installation.

4 E5805A USB/RS232 Interface

E5805A USB/RS232 Interface

Driver Installation For Windows XP

1 You must be logged into an account with administrator

privileges.

2 Insert the “Agilent Driver” CD into your CD- ROM drive.

3 After connecting the USB cable, the Found New Hardware

Wizard appears. Click “Next,” and the drivers are

automatically installed from the CD. There are multiple

resources on the E5805A which have to be setup, so continue

to install resources until the XP installation completes.

Driver Installation For Windows 2000

1 You must be logged into an account with administrator

privileges.

2 Insert the “Agilent Driver” CD into your CD- ROM drive.

3 After connecting the USB cable, the Found New Hardware

Wizard appears. Select “Install from a list or specific location

(Advanced)” and click “Next”.

4 Select “Search for a suitable driver for my device” and click

“Next”.

5 Select “Specify a location” and click “Next”.

6 Type in <CD drive letter>:\Win2k and click “OK”.

7 Confirm that Windows is pointing to <CD drive letter>:\

Win2k. Then click “Next”.

8 There are multiple resources on the E5805A which have to be

setup, so continue to install resources until the Windows

2000 installation completes.

9 Windows then finishes installing the driver files.

10 Choose “Finish” to complete the driver installation.

Installation is complete when no more dialogs appear. Your new

COM port(s), numbered sequentially following the existing

ports in your system, are ready.

E5805A USB/RS232 Interface

E5805A USB/RS232 Interface 5

Driver Installation For Windows 98SE and Me

1 Insert the "Agilent Driver" CD into your CD- ROM drive.

2 After connecting the USB cable, the Add New Hardware

Wizard appears. Click "Next".

3 Select "Search for the best driver for your device" and click

"Next".

4 Select "Specify a location" and type in <CD drive letter>:\

Win98. Then click "Next".

5 Confirm Windows is pointing to <CD drive letter>:\Win98.

Click "Next". Windows then copies over the driver files.

6 Click "Finish" to complete the driver installation.

Installation is complete when no more dialogs appear. Your new

COM port(s), numbered sequentially following the existing

ports in your system, are ready.

6 E5805A USB/RS232 Interface

E5805A USB/RS232 Interface

Interpreting the System Status Light

Red: This light signifies a loss of USB communication with the

host. If the loss is due to unplugging the unit, when the unit is

reconnected the light will blink red for a few moments before

turning green. Otherwise, the light indicates a problem with the

drivers, which may need to be reinstalled. The red light also

blinks during installation. Once the installation is complete, it

should stop blinking.

Amber: This light signifies serial port activity on the E5805A

USB/RS232 Interface. The amber light may also flash briefly

during installation.

Green: This light indicates the serial ports are successfully set

up and the E5805A USB/RS232 Interface is operating normally.

E5805A USB/RS232 Interface

E5805A USB/RS232 Interface 7

The E5805A USB/RS232 Interface Utility Program

For all Windows Operating Systems

The E5805A USB/RS232 Interface configuration utility

program, which is available from the Start menu, allows you to

manage the serial ports of your 4 Port Interface product.

NOTE

For Windows 98SE and Windows Me, the configuration utility is located in

C:\WINDOWS\SYSTEM\EDGEPORT.EXE.

8 E5805A USB/RS232 Interface

E5805A USB/RS232 Interface

The General tab in this utility allows you to do the following:

1 Information - Check the manufacturing information related

to your device.

2 Configure - Reassign your device’s physical port to any

available Windows COM port number from 1 to 255 and give

your device a user- friendly Device Name. This capability is

particularly helpful if you have more than one device.

E5805A USB/RS232 Interface

E5805A USB/RS232 Interface 9

Port Flags - Configure performance options and special

functionality on a per- port basis.

•Remap Baud: Setting the baud rate to 1200 baud will result

in 230400 baud

•Fast Reads:

This flag is used when an application requires a read to

complete immediately. In the read immediate case, the

E5805A USB/RS232 Interface driver sends a request to the

device asking for any buffered data to be sent. This buffered

data will be included when the read completes. If this flag is

set, the driver does not query the device for additional data.

•Fast Writes: When an application sends a write to the driver,

by default the E5805A USB/RS232 Interface driver waits

until all data has been transmitted out of the device before

completing the write. When the Fast Writes flag is set, the

write is completed even if data is still buffered in the driver

and the device.

•Ignore Tx Purge: The IOCTL_SERIAL_PURGE request

cancels the specified requests and deletes data from the

specified buffers. The purge request can be used to cancel all

read requests, all write requests, and to delete all data from

the read and write buffers.

10 E5805A USB/RS232 Interface

E5805A USB/RS232 Interface

When the Ignore Tx Purge flag is set the

SERIAL_PURGE_TXCLEAR command is ignored. The

function does not purge the write buffer.

• Disable Plug & Play: (Windows 2k/XP only)

Do not let the serial port enumerator detect devices plugged

into the 4 Port Interface.

•Timer Logic: (Windows 98SE only)

If the application uses PortSetReadCallBack(), the

notification routine is only called when the number of bytes

in the receive buffer is greater then the RX trigger. The

Microsoft serial VxD also implements a timer that triggers

and calls the notification routine if some amount of data is

available in the RX buffer, but no new data has been received

for ~200ms (receiver is no longer active).

We do not enable this behavior by default because of the

nature of E5805A USB/RS232 Interface’s buffering. However,

if you set the flag, the read is completed when ~200 ms of no

activity is detected.

Here is a comment from the code:

If the receiver is active, then do not complete this read. The

problem is that the device buffers the RX bytes and we poll

the driver. If we do not receive any bytes in 200ms we may

report an erroneous event even if there are available bytes

in the device or driver.

Test Ports - Performs a confidence test on the internal

workings of the serial ports..

E5805A USB/RS232 Interface

E5805A USB/RS232 Interface 11

The Version tab allows you to check the file information related

to the software. There is no graphic of this tab.

12 E5805A USB/RS232 Interface

E5805A USB/RS232 Interface

The Advanced tab allows you to do the following:

• Uninstall the drivers.

• Enable Event Logging – Place event messages in the

system event log.

• Configure how COM ports are assigned.

The driver supports COM port number assignment in two

ways:

1 Assign COM ports based on the converter serial number.

This is the default setting. In this mode, the driver uses the

serial number of each converter to uniquely identify it, and

the COM port assignments for a given converter are based on

its serial number. No matter which physical USB port a

converter is plugged into, it maintains its assigned COM port

numbers.

2 Assign COM ports based on physical USB port.

E5805A USB/RS232 Interface

E5805A USB/RS232 Interface 13

In this mode, the driver identifies a converter based on the

physical USB port where it is connected. This effectively

assigns COM port numbers to physical USB ports. No matter

which converter is plugged into a given USB port, it uses the

COM port numbers assigned to that USB port. This permits a

converter to be replaced with a new unit, and, although the

new unit has a different serial number, it receives the same

COM port assignments as the old unit because they were both

plugged into the same USB port.

When using this mode, converters are not identified by their

serial number, but by a 2- 7 digit number that identifies the

USB port it is plugged into.

After changing this setting, you need to reboot before the

change takes effect.

14 E5805A USB/RS232 Interface

E5805A USB/RS232 Interface

Understanding the E5805A and USB Hubs

Hubs, critical components in the USB architecture, are wiring

concentrators that enable the attachment of multiple devices,

thus converting a single attachment point into multiple

attachment points. USB architecture allows a cascaded multiple

hub configuration with certain power limitations (explained

later in this section). See Figure 1.

Figure 1 Hub Architecture

Each hub has an upstream port, connecting to the host, and

multiple downstream ports, connecting to downstream devices,

possibly including other hubs. A hub can detect attachment and

detachment of downstream devices and enable and monitor the

distribution of the power to downstream devices via their

integral hardware and the operating system.

Each USB device reports its power requirements to the

operating system, which then enables and disables the device as

a function of its power requirements and the amount of

available power. High powered devices typically need to be

connected to a self- powered hub that obtains power from its

external power supply and provides up to 500 mA for each

downstream port. Only low powered devices, such as a mouse,

E5805A USB/RS232 Interface

E5805A USB/RS232 Interface 15

can be connected to a bus- powered hub, which obtains power

from its upstream host and provides up to 100 mA for each

downstream port.

Due to the limited available power for bus- powered hubs,

cascading two bus- powered hubs is an illegal topology, and

devices connected to the second hub will not function. USB

specifications limit the connection of a bus- powered hub to a

self- powered hub or host only.

According to the USB Specification, the maximum limit of hubs

cascaded in series cannot exceed five. In other words, you may

have a maximum of five hubs between any device and the host.

This does not mean that the maximum number of hubs in a

system is five. Indeed, up to seven hubs can be connected

parallel at any given level. You must tally both external and

embedded hubs when counting downstream hubs.

NOTE

The E5805A is a bus-powered device and, therefore, must not be

connected to a bus-powered hub.

16 E5805A USB/RS232 Interface

E5805A USB/RS232 Interface

Support

All support can be reached by contacting a call center. For your

nearest call center, go to http://www.agilent.com/find/assist

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