Tektronix products are covered by U.S. and foreign patents, issued and pendin g.
Information in this publication supersedes that in all previously published
material. Specifications and p
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
served. Licensed software products are
rice change privileges reserved.
Contacting Tektronix
Tektronix, Inc.
14200 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
For pro duct information, sales, service, and technical support:
In North Am erica, call 1-800-833-9200.
Worldwide, visit www.tektronix.com to find contacts in your area.
Tektronix warrants that this product will be free from de fects in
materials and workmanship for a period of one (1) year from the date
of shipm ent. If any such product proves defective during this warranty
period, Tektronix, at its option, either will repair the defective product
without charge for parts and labor, or will provide a replacement in
exchange for the defective product. Parts, modules and replacement
products used by Tektronix for warranty work may be new or
reconditioned to like new performance. All replaced parts, modules and
products become the property of Tektronix.
In order to obtain service under this warranty, Customer m ust notify
Tektronix of the defect before the expiration of the warranty period and
make suitable arrangements for the performance of service. Customer
shall be responsible for packaging and shipping the defective product
to the service center designated by Tektronix, with shipping charges
prepaid. Tektronix shall pay for the retu rn of the product to Customer if
the shipment is to a location within the country in which the Tektronix
service center is located. Customer shall be responsible for paying all
shipping charges, duties, taxes, and any other ch arges for products
returned to any other locations.
This w arranty shall not apply to any defect, failure or damage caused
by improper use or improper or inadequate maintenance and care.
Tektronix shall not be obligated to furnish service under this warranty
a) to repair damage resulting from attempts by personnel o ther than
Tektronix representatives to install, repair or service the product;
b) to repair damage resulting from improper use or connection to
incompatible equipment; c) to repair any damage or malfunction caused
by the use of non-Tektronix supplies; or d) to service a product that has
been modified or integrated with other products when the effect of such
modification or integration increases the time or difficulty of servicing
the product.
THIS WARRANTY IS GIVEN BY TEKTR ONI X WITH
RESPECT TO THE PRODUCT IN LIEU OF ANY OTHER
WARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND
ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE. TEKTRONIX’ RESPONSIBILITY TO REPAIR
TEK-USB-488 GPIB to USB Adapter User Manual1
Warranty
OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND
EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER
FOR BREACH OF THIS WARRANTY. TEKTRONIX AND ITS
VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT,
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR
HAS ADVAN CE NOTICE OF THE POSSIBILITY OF SUCH
DAMAGES.
[W2–15AUG04]
2TEK -USB-488 GPIB to USB Adapter User M anual
General Safety Summary
Review the follow ing safety precautions to avoid injury and prevent
damage to this product or any products connected to it.
To avoid potential hazards, use this product only as specified.
Only qualified personnel should perform service procedures.
To Avoid Fire or Personal Injury
Use Proper Power Cord. Use only the power cord specified for this
product and certified for the country of use.
Observe All Terminal Ratings. To a v oid fire or shock hazard, observe all
ratings and markings on the product. Consult the product manual for
further ratings information before making connections to the product.
Do Not Operate Without Covers. Do not operate this product with covers
or panels removed.
Do Not Operate With Suspected Failures. If you suspect that there is
damage to this product, have it inspected by qualified service personnel.
General Safety Summary
Avoid Exposed Circuitry. Do not touch exposed connections and
components when power is present.
Use Proper AC A dapter. Use only the AC adapter specified for this
product.
Wear Eye Protection. Wear eye prote
rays or laser radiation exists.
Do Not Operate in Wet/Damp Conditions.
Do Not Operate in an Explosive Atmosphere.
Keep Product Surfaces Clean and Dry.
Provide Proper Ventilation.
for details on installing t he product so it has proper ventilation.
TEK-USB-488 GPIB to USB Adapter User Manual3
Refer to the manual’s installation instructions
ction if exposure to high-intensity
General Safety Summary
Terms in this Manual
These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could
result in injury or loss of life.
CAUTION. Caution statemen ts identify conditions or practices that could
result in damage to this product or other property.
Symbols and Terms on the Product
These terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you
read the marking.
WARNING indicates an injury hazard not imm ediately accessible
as you read the marking.
CAUTION indicates a hazard to property including the product.
The follow ing symbol(s) may appear on the product:
4TEK -USB-488 GPIB to USB Adapter User M anual
Compliance Information
This section lists the EMC (electromagnetic compliance) and
environmental standards with which the instrument complies.
EMC Compliance
EC Declaration of Conformity – EMC
Meets intent of Directive 2004/108/EC for Electromagnetic
Compatibility. Compliance was demonstrated to the following
specifications as listed in the Official Journal of the European
Communities:
Compliance Information
EN 61326-1 2006. EMC requirements for electrical equipment for
measurement, control, and laboratory use.
123
CISPR 11:2003. Radiated an d cond ucted emission s, G roup 1,
IEC 61000-4-4:2 004 . Electrical fast transient / burst immunity
IEC 6 100 0-4-5 :20 01. Power line surge immunity
IEC 61000-4-6:2003. C o ndu cted RF immunity
IEC 61000-4-11:2004. Voltage dips and interruptions immunity
EN 61000-3-2:2006. AC power line harmonic emissions
EN 61000-3-3:1995. Voltage changes, fluctuations, and flicker
1
This product is intended for use in nonresidential areas only. Use in residential areas
may cause electromagnetic interference.
2
Emissions which exceed the levels required by this standard may occur when this
equipment is connected to a test object.
3
To ensure compliance with the EMC standards listed here, high quality shielded interface
cables should be used.
TEK-USB-488 GPIB to USB Adapter User Manual5
Compliance Information
European Contact.
Tektronix UK, Ltd.
Western Peninsula
West e r n Road
Bracknell, RG12 1RF
United Kingdom
Australia / New Zealand Declaration of Conformity – EMC
Complies with the EMC provision of the Radiocommunications Act per
the following standard, in accordance with ACMA:
CISPR 11:2003. Radiated and Conducted Emissions, Group 1,
Class A, in accordance with EN 61326-1:2006.
Safety Compliance
Equipment Type
Test and measuring equipment.
Pollution Degree Description
A measure of the contaminants that could occur in the environment
around and within a prod uct. Typically the internal environment inside
a product is considered to be the same as the external. Products should
be used only in the environment for which they are rated.
Pollution Degree 1. No pollution or only dry, nonconductive
pollution occurs. Products in this category are generally
encapsulated, hermetically sealed, or located in clean rooms.
Pollution Degree 2. Normally only dry, no nconductive pollution
occurs. Occasionally a temporary conductivity that is caused
by condensation must be expected. This location is a typical
office/home environment. Temporary condensation occurs only
when the p roduct is out of service.
6TEK -USB-488 GPIB to USB Adapter User M anual
Compliance Information
Pollution Degree 3. Co nductive pollution, or dry, nonco nductive
pollution that becomes conductive due to condensation . These
are sheltered locations w here neither temperature nor humidity
is controlled. The area is protected from direct sunshine, rain, or
direct wind.
Pollution Degree 4. Pollution that generates persistent con ductivity
through conductive dust, rain, or snow. Typical outdoor locations.
Pollution Degree
Pollution Degree 2 (as defined in IEC 61010-1). Note: Rated for indoor
use only.
TEK-USB-488 GPIB to USB Adapter User Manual7
Compliance Information
Environmental Considerations
This section provides information about the environmen tal impact of
the product.
Product End-of-Life Handling
Observe the following guidelines when recycling an instrument or
component:
Equipment Recycling. Production of this equipment required the
extraction and use of natural resources. The equipment may contain
substances that could b
if improperly handled at the product’s end of l ife. In order to avoid
release of such substances into the environment and to reduce the use
of natural resources
appropriate system that will ensure that most of the materials are reused
or recycled appropriately.
e harm ful to the environment or human health
, we encourage you to recycle this product in an
This symbol indica
applicable Europ
Directives 2002
electronic equi
about recyclin
the Tektronix
tes that this product complies with the
ean Union requirements according to
/96/EC and 2006/66/EC on waste electrical and
pment (WEEE) and batteries. For information
g options, check the Support/Service section of
Website(www.tektronix.com).
Restriction of Hazardous Substances
This product has been classified as Monitoring and Control equipment,
and is outside the scope of the 2002/9 5/EC RoHS Directive.
8TEK -USB-488 GPIB to USB Adapter User M anual
Preface
This manual describes the installation and operation of the
TEK-USB-488 GPIB to USB Adapter. The adapter allows you to
connect a USB device port on your USBTMC-USB488 compliant
instrument, such as a DPO4000 Series oscilloscope, to a GPIB
(IEEE488) controller.
ControllerGPIBAdapterUSBInstrument
Key Features
Key features include:
Preface
GPIB control of USBTMC-USB488 compliant Tektronix
instruments through the USB port. The USBTMC protocol enables
USB devices to communicate using IEEE488 style messages. This
lets you run your GPIB software applications on USB hardware.
Fast data transfer rates
Power from either the USB host or an optional external power
supply
TEK-USB-488 GPIB to USB Adapter User Manual9
Installation
Installation
Unpack the adapter and check tha
listed as standard accessories. Check the Tektronix Web site
(www.tektronix.com) for the most current information.
Standard Accessories
DescriptionPart number
User Manual071-1839-XX
USB cable (2 each, 1 meter)
Optional Accessories
DescriptionPart number
GPIB cable (1 meter)
GPIB cable (2 meter)
External power supply (order power
cord separately)
United States power cord
Universal European power cord161-0066-XX
United Kingdom power cord161-0066-XX
Australia power cord161-0066-XX
Switzerland power cord
Japan power cord161-0342-XX
China power cord
India/South Africa power co rd
t you received all the items
174-4401-XX
012-0991-XX
012-0991-XX
119-8724-XX
161-0066-XX
161-0154-XX
161-0304-XX
161-0400-XX
10TEK-USB-488 GPIB to USB Adapter User Manual
Controls and Connectors
1.GPIB Connector
2.Adapter Status indicator (See Table 1 on page 22.)
Installation
3.USB Status indicator (See Table 2 on page 22.)
4.USB Host port for connection to the USB Device port on the
You can connect power to the adapter in one of two ways:
From a USB host port
From the optional external power supply
Connecting USB Power
To apply power to your adapter from a USB host port, do the following
procedure:
1.Connect the device end of a USB cable to the USB Device port
on the rear panel of the adapter.
2.Connect the host end of the USB cable to a USB Host port on the
equipment that is to provide power (typically the instrument being
controlled or a PC).
3.Verify that the Power LED lights and that the USB and Adapter
Status LEDs turn on and then off. This indicates that the adapter
is initializing correctly.
12TEK-USB-488 GPIB to USB Adapter User Manual
Installation
Connecting the External Power Supply
To apply power to your adapter from the optional AC power unit, do
the following procedure:
1.Connect the output power cable from the power unit to the 5 VDC
connector on the rear panel of the adapter.
2.Connect one end of the optional pow er cord to the external power
supply.
3.Connect the oth er end of the power cord to the wall po wer outlet.
4.Verify that the Power LED lights and that the USB and Adapter
Status LEDs turn on and then off. This indicates that the adapter
is initializi
TEK-USB-488 GPIB to USB Adapter User Manual13
ng correctly.
Installation
Connecting Cables
NOTE. The following cables can be connected while the instruments are
powered on.
To connect the TEK-USB-488 GPIB to USB Adapter to USB and GPIB
cables, do the f ollowing procedure:
1.Connect a GPIB cable from the GPIB controller to the GPIB po rt
on the adapter.
2.Connect a USB cable from the Device port on the instrument to the
Host port on the adapter.
14TEK-USB-488 GPIB to USB Adapter User Manual
Setting the GPIB Address
The default GPIB address of the adapter is 1. You have to use the
default GPIB address for the adapter if you use it with instruments that
are not manufactured by Tektronix, or with older Tektronix instruments
that are not designed to support the USB protocol and USB extensions
required for setting the GPIB address of the adapter.
If you connect the Tek-USB-488 GPIB to USB Adapter to a Tektronix
USBTMC-USB488 compliant instrument desig ned to support the
adapter, such as a DPO4000 Series instrument, you can set the address
to a value from 1 through 30 using the menu system of the instrument.
To change the GPIB address from an instrument designed to support the
adapter, do the following procedure:
1.Locate the GPIB control menu on the instrument being attached.
2.Use the appropriate control to select the Talk/Listen address that
you wan t. T he instrument automatically disables and enables the
USB port so that the new address is recog nized .
3.Communicate with the instrument attached to the adapter using the
control program running on your GPIB con troller.
Installation
TEK-USB-488 GPIB to USB Adapter User Manual15
Installation
The f ollowing parameter assumptions are made:
GPIB secondary addressing is not supported.
The default GPIB primary address i s 1. The GPIB p rimary
address can only be changed from a connected Tektronix
USBTMC-USB488 compliant instrument designed to support the
TEK-USB-488 GPIB to USB Adap ter, such as a DPO4000 Series
oscilloscope.
The GPIB Program Message Terminator (PM T ) is the GPIB end of
input (EOI) line and is not configurable. Messages that assert EO I
concurrent with a new line (hexadecimal 0a) character as the last
data byte are supported. This means th at both EOI and EOI NL
program message terminations are supported and that the NL-only
termination is not supported.
USB hubs are not supported. You can connect only one
USBTMC-USB488 compliant instrument to the USB Host port of
the adapter at any t im e.
The GPIB on/off state is online when there is an active
USBTMC-USB488 connection. You cannot change the GPIB
on/off state after the conn ection is established.
16TEK-USB-488 GPIB to USB Adapter User Manual
Updating Firmware
To update the adapter firmware:
1.Power off the adapter.
2.Disconnect any USB or GPIB devices from the adapter.
3.Download the new firmware from www.tektronix.com to a USB
mass storage device.
Installation
4.Plug the USB mass storage device into the adapter.
5.Power on the adapter.
TEK-USB-488 GPIB to USB Adapter User Manual17
Installation
6.Note the color of the Adapter Status LED.
7.If the LED is blinking green, power off the adapter, and reconnect
8.Power on the adapter, and verify that the Adapter Status LED is
9.If the LED is blinking red, the firmware upgrade process failed.
Solid yellow indicates that the firmware upgrade is in progress.
Wait until the LED changes color.
Blinking green indicates that the firmware was successfully
updated. Go to step 7.
Blinking red indicat es that the firmware update failed. Go to
step 9.
the USB and GPIB cables. (See page 14, Connecting Cables.)
solid green. This c om pletes the firmware update procedure.
Contact Tektronix for service.
18TEK-USB-488 GPIB to USB Adapter User Manual
Mounting the Adapter
Although there is no rack mo unt kit available specifically for the adapter,
you can mount the adapter to a surface, such as an existing rackmount
tray or a b racket of your d esign, by doing the following procedure:
1.Remove the four adhesive-backed, plastic feet from the adapter.
2.Refer to t he dimensions shown in the illustration, and drill holes i n
the mounting surface for tw o screws.
3.Mount the ad apter using two 6-32 screws of appropriate length.
Installation
NOTE. If you are insta lling the RM4000 rackmount kit for a DPO4000
Series instrument, the kit has provisions for mounting accessories, such as
the adapter.
TEK-USB-488 GPIB to USB Adapter User Manual19
Troubleshooting
Troubleshooting
Before starting to troubleshoo
There are no user serviceable parts.
There is no performance verification procedure.
The adapter does not support a
If your adapter does not appear to work, do the following checks:
1.Check the cables.
The USB and GPIB cable co
When you push on them gently, they should feel fully seated.
2.Check the power.
t, note the following:
USB hub.
nnectors should be fully inserted.
If the adapter is receiving power, the power indicator will be lighted.
If it is not, try gently p ushi ng in the power cable on either the power
connector
20TEK-USB-488 GPIB to USB Adapter User Manual
or the USB Device port, whichever one you are using.
Troubleshooting
3.Check the GPIB settings.
If the adapter is receiving power, the power indicator will be lighted.
If it is not, try gently pushing in the power cable on either the power
connector or the USB Device port, whichever one you are using.
If the address setting is correct, disconnect the instrum ent from the
Host p ort on the adapter. Wait for one second , and then reconnect
the instrument to the Host port.
4.Check the firmware.
Use up-to-date firmware for your adapter. To do this, go to
www.tektronix.com on the Web. Load the firmwa re to the adapter
by way of the USB port. (See page 17, Upda ting Firmware.)
5.Check that your program does not lose data.
If you notice data being lost, you may have encountered the
Interrupted Query Error: Correct this situation by ensuring
that your program is written so that after the controller sends a
query to the oscilloscope, it reads all of the response data from the
oscilloscope befo re sending any other commands or queries to it.
For additional information, refer to the appropriate programmer
manual (for example, the DPO4000 Series Programmer Manual).
6.Check the indicator lights.
TEK-USB-488 GPIB to USB Adapter User Manual21
Troubleshooting
The Ad apter Status and U SB Status indicator ligh ts on the ad apter
should be in their normal settings. To check them, refer to the
following tables:
Table 1: Adapter Status LED
ColorIllumination Description
Green
Yellow
Red
None
SolidThe GPIB is online and operational. A USB connection is
established.
Blinking
SolidA firmware upgrade is in process.
Blinking
SolidThe adapter sensed an attempted connection of a USB
Blinking
OffIf in operational mode, the GPIB is off line.
If in normal operational mode, the GPIB cannot be placed
online because there is not an active USB connection or
the connected USBTMC-USB488 device is not a Tektronix
instrument.
If in the firmware upgrade mode, the firmware upgrade has
completed successfully.
Firmware upgrade mo de: A USB mass storage device is
detected, which contains the firmware upgrade file.
Non firmwar
online du
connection to a non USBTMC-USB488 device. The adapter
refused to make the connection.
If in operational mode , the power-up self test failed.
If in the firmware upgrade mode, the firmwa re upgrade
failed.
It may also mean that the adapter is not powered on.
e to an e rror detected by the GPIB driver.
e upgrade mode: The GPIB cannot be placed
Table 2: USB Status LED
IlluminationDescription
OffNo USB connection is present
SolidA USB connection is present, and there is no activity
Blinking
A USB connection is present, and data is being transferred
on any of the USB endpoints.
22TEK-USB-488 GPIB to USB Adapter User Manual
Specifications
USB, General
CharacteristicDescription
USB Host
Version
USB Driver
Class
USB Device Characteristics
Partially to fully compliant USB 2.0 full speed host interface.
Anticipated downstream power requirements are less than 10 mA
when connected to a Tektronix oscilloscope. Sole noncompliance
point is current available when running from USB device port.
Modified USB TMC standard.
Specifications
Characteristic
USB Device
Version
Description
None. Device interface provides powe r only. A ssumes 0.5 A
availability from host device. No negotiation is performed to
acquire access to that power.
GPIB Characteristics
CharacteristicDescription
GPIB Version
Bulk Data Rate
Supported GPIB
Features
IEEE-488.2
Bulk data rate is highly dependent upon the characteristics of the
GPIB controller and any other peripherals coresident on the GPIB.
No provision is made to support HS (4 MB/sec) GPIB
No provision is made for DMA from GPIB
AH1, SH1, SR1, PP1, T5, L3, RL1, DC1, DT1, C0
Miscellaneous Characteristics
CharacteristicDescription
Current
Consumption
Current consumption is less than 0.5 ADC from 5 V
TEK-USB-488 GPIB to USB Adapter User Manual23
Specifications
Atmospherics
CharacteristicDescription
Temperature:
Operating and
Nonoperating
Humidity:
Operating and
Nonoperating
Altitude:
Operating and
Nonoperating
Operating:
0°Cto+50°C(32°Fto+122°F)
Nonoperating:
–20 °C to +60 °C (–4 °F to +140 °F)
Operating:
High: 40 °C to 50 °C (104 °F to 122 °F), 10% to 60% relative
humidity
Low: 0 °C to 40 °C (32 °F to 104 °F), 10% to 90% relative humidity
Nonoperating:
High: 40 °C to 60 °C (104 °F to 140 °F), 5% to 60% relative
humidity
Low: 0 °C to 40 °C (32 °F to 104 °F), 5% to 90% relative humidity