Measurement-computing Extender 488HS Rev.2.0 User Manual

the smart approach to instrumentation ™ IOtech, Inc. 25971

Section 2 Getting Started2.2(for the Extender488/HS Bus Extender connected to the Local bus) or RemoteExtender Mode (for the Extender488/HS Bus Extend

Section 2 Getting Started2.32.3 Front Panel IndicatorsSix LEDs on the front panel of the Extender488/HS display the status of the busextender. The f

Section 2 Getting Started2.4and change the setting of S3. The 1/2 Amp fuse (IOtech part number FU-1-.5) that is used for 115 Voltoperation must be re

Section 2 Getting Started2.53. Replace the 1/2 Amp fuse, FU-1-.5 (115 volt operation), with the 1/4 Amp fuse (230 voltoperation), part number FU-1-.25

Section 2 Getting Started2.62.5 Hardware InstallationIncluded with the Extender488/HS Bus Extender are accessories for rack or bench use. If rackmou

Section 2 Getting Started2.72.6 OperationAfter configuring the Extender488/HS IEEE 488 Bus Extenders and connecting theExtender488/HS cable, plug the

Section 2 Getting Started2.8SYMPTOM FAILURECONNECT LED off Extender488/HS cable defectiveor not properly installedNo LEDs on Power not connectedIf th

Section 2 Getting Started2.9Length (Meters)10 100 1000101001000Extender488/HS Data Rate vs Cable LengthSince the IEEE 488 handshake is maintained acro

Section 2 Getting Started2.108. Local extender receives parallel poll response on the link port and sends it to the localIEEE 488 bus.9. Controller re

Section 3 IEEE 488 Primer3.1IEEE 488 Primer3.1 HISTORYThe IEEE 488 bus is an instrumentation communication bus adopted by the Institute of Electrical

Warranty InformationYour IOtech warranty is as stated on the product warranty card. You may contact IOtech by phone,fax machine, or e-mail in regard

Section 3 IEEE 488 Primer3.2At a committee meeting, everyone present usually listens. This is not the casewith the GPIB. The Active Controller selects

Section 3 IEEE 488 Primer3.3

Section 3 IEEE 488 Primer3.43.3 SEND IT TO MY ADDRESSIn the previous discussion, the terms Addressed to Talk and Addressedto Listen were used. These

Section 3 IEEE 488 Primer3.53.4.3 Remote Enable (REN)When the System Controller sends the REN command, busdevices will respond to remote operation. Ge

Section 3 IEEE 488 Primer3.6waits until NRFD is unasserted (high) which indicates that all AddressedListeners are ready to accept the information. Whe

Section 3 IEEE 488 Primer3.73.6 DATA LINESThe GPIB provides eight data lines for a bit parallel/byte serial data transfer.These eight data lines use

Section 3 IEEE 488 Primer3.83.7.6 Local Lockout (LLO)Issuing the LLO command prevents manual control of the instrument'sfunctions. ($11)3.7.7 De

Section 3 IEEE 488 Primer3.93.7.13 Secondary Command Group (SCG)These are any one of the 32 possible commands (0 to 31) in this group.They must immed

Section 3 IEEE 488 Primer3.103.8.1 Serial PollSuppose the Controller receives a service request. For this example,let's assume there are several

Section 4 Service Information4.1Service Information4.1 Factory ServiceIOtech maintains a factory service center in Cleveland, Ohio. If problems aree

Table of ContentsSection 1 Introduction 1.11.1 Description 1.11.2 Available Accessories 1.21.3 Specifications 1.21.4 Abbreviations 1.4Section 2 Ge

Section 4 Service Information4.24.3.1 Extender488/HS Cable Wiring DiagramPair Shielded ShieldedMale Connector Male Connector1 1126 262 2227 273 3328

Section 4 Service Information4.3Extender488/HS Wiring Diagram - ContinuedPairShielded ShieldedMale Connector Male Connector16 16 1641 4117 17 1742 421

Appendix A Character Codes And IEEE Multiline MessagesA.1NULSOHSTXETXEOTENQACKBELBSHTLFVTFFCRSOSIDLEDC1DC2DC3DC4NAKSYNETBCANEMSUBESCFSGSRSUSSP!"#

Table of ContentsSection 4 Service Information ...

Section 1 Introduction1.1Introduction1.1 DescriptionThe Extender488/HS High Speed IEEE 488 Bus Extender enables IEEE488 devices to be controlled at a

Section 1 Introduction1.21.2 Available AccessoriesThe following accessories are available from IOtech for use with the Extender488/HSBus Extender:CA-

Section 1 Introduction1.3GeneralData Rates: Specifications apply to data transfers afteraddressing has been established.Cable Length m. (ft.)

Section 1 Introduction1.41.4 AbbreviationsThe following IEEE 488 abbreviations are used throughout this manual.addr nIEEE bus address "n"AT

Section 2 Getting Started2.1Getting Started2.1 InspectionYour Extender488/HS IEEE 488 Bus Extender was carefully inspected, bothmechanically and elec