4865
LAN GPIB INTERFACE
GPIB-to-LAN
Instrument Interface
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DESCRIPTION
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ICS's 4865 is a GPIB-to-LAN Instrument
Interface that enables a VXI-11.3 compatible
LAN instrument to be controlled from a GPIB
Bus. Using the 4865, GPIB applications running on a computer can transparently interface
to a LAN-based instrument just as if it were
a GPIB Instrument. The 4865 converts 488.1
GPIB commands into the equivalent VXI11 RPC and sends them to the instrument.
Device messages are transparently sent to
the instrument and instrument replies are
returned to the GPIB Controller, just like a
GPIB instrument.
The 4865 solves the problem of how to
interface an instrument with an Ethernet
interface to the GPIB bus. The 4865 adds a
GPIB interface to VXI-11.3 compatible LAN
or LXI instruments that do not have a GPIB
interface. Applications include replacing
obsolete or failed GPIB instruments with a
newer instrument that may not have a GPIB
interface or just adding a new LAN instrument to a GPIB bus system.
Linking to the Instrument
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4865 GPIB-to-LAN Interface
sequence. The instrument and the 4865's
IP address must be in the same IP address
B range for Auto Find to work. When the
4865 finds a VXI-11.3 instrument, it opens
a core channel to the instrument.
If the 4865 has been given a specific
instrument's IP address, the 4865 only looks
for an instrument at that address. Static
address are recommended when the 4865
is connected to the company network or
when multiple instruments may respond to
the 4865.
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Minimal Programming Changes
In most cases, existing programs that
controlled the instrument in a LAN environment or ran the older version of the
instrument through its GPIB interface can
be used with the 4865 and the LAN instrument. The only requirement is that the new
instrument must understand your existing
commands. The 4865 works with any IEEE488.2 compatible GPIB controller and can
be used with LabVIEW, VEE, Visual Basic
and C language programs. The 4865 and
VXI-11.3 instruments support most 488.1
The 4865 operates with any VXI-11.3 compatible instrument which includes most LAN
and some LXI instruments (The LXI Specification only requires a minimum VXI-11
compatibility, so check VXI-11 compatibility
with your LXI instrument manufacturer.)
The 4865 can be set to operate with an
instrument at a specific IP address or to
automatically find the instrument. Either
method can be used in a
direct 4865-instrument
Ethernet
Crossover
connection.
Cable
GPIB
If AutoFind is selected, the 4865 starts
an instrument discovLAN Instrument
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ery process as soon as
4865 LAN <=>GPIB Interface
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it completes its power
turn-on and self-test
8065
Ethern
et to
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Controls a LAN instrument
from the GPIB bus.
Adapts LAN instruments for
GPIB Test Systems.
Runs from any GPIB system.
Transparently passes all commands to the companion LAN
instrument.
AutoFind feature simplifies
instrument linkage.
Eliminates changing IP addresses.
Internal VXI-11 client talks to
any VXI-11.3 instrument.
Works with most LAN instruments.
Aids in replacing failed GPIB
instruments.
Saves instrument replacement
costs and helps reuse existing
test software.
Add newer LAN instruments
to GPIB systems.
Extends the number of instruments that will work in a
GPIB test system.
Internal HTML server handles
4865 configuration.
Easy configuration from any
computer or web browser.
Approved
RoHS Construction
GPIB
Connects a LAN Instrument to the GPIB Bus
7034 Commerce Circle
Pleasanton, CA 94588
Phone: 925.416.1000
Fax:
925.416.0105
Web: www.icselect.com
4865 APPLICATIONS
GPIB commands except for Remote with Lockout and
Local with Lockout. The user will have to be sure that
the instrument supports the device commands used
in the existing program and that the device messages
sent to the 4865 are terminated with the 488.2 New
Line terminator.
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Line to Company Network
GPIB
Connections
While the 4865 is normally used in a back-to-back
connection with its companion instrument as shown
in Figure 1, it can be connected to the instrument in
other ways.
Figure 2 shows the 4865 connected to the instrument
through a hub. This is a typical lab bench connection.
It lets the user configure the 4865 through the hub
while developing the GPIB program.
Figure 3 shows the 4865 connected to the instrument over a company network. The 4865 gives you
standard GPIB control over a LAN instrument no
matter where it is located.
8065
Ethern
et to
LAN Instrument
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Figure 2
GPIB
4865 LAN <=>GPIB Interface
4865 Instrument Hub Connection
Company Network
4865's Operation
GPIB
The 4865 transparently passes all device commands
and IEEE-488.2 Common Commands onto the instrument and returns all instrument responses to the client
application. The 4865 also does such familiar GPIB
tasks as sending Selected Device Clears and Device
Triggers to the instrument, set Local or set Remote
modes and perform Serial Polls. Interface Clears
(IFCs) only affect the 4865's GPIB Interface and are
not passed on to the companion instrument.
The 4865 does a background poll of the LAN
instrument's Status Register and asserts the GPIB
bus SRQ line if a Service Request is detected. When
the 4865 is Serial Polled, the instrument is sent a device_readSTB rpc and the response is returned to the
GPIB Controller.
your environment. Set the remaining network parameters, save the
settings and the 4865 is ready to be connected to the instrument and
GPIB bus.
A rear panel LAN Reset button is provided to reset the 4865's
network settings to the factory default settings in case the 4865's
configuration needs to be reset.
Setup & Installation
Easy Firmware Updates
The 4865 is very easy to install. Plug the 4865 into
a network access point adjacent to your computer as
shown in Figure 2 or use an Ethernet crossover cable
to connect the 4865 directly to a PC's network port.
Launch a web browser and point it to the 4865's default
AutoIP address of 169.254.48.65. The 4865's Welcome
page provides all of the information about the 4865's
current settings. On the Configuration page, you can
set the 4865 to a static IP address or enable the 4865
to accept an DHCP address setting if the network has
a server that can assign network addresses. You can
also set the 4865's GPIB address and a fixed IP address
for the companion instrument if that works better in
The 4865 has a program download and store function which lets
the 4865 receive program changes through its Ethernet interface. If a
future firmware change is necessary, the new firmware and Upgrade
Utility program can be downloaded from ICS's website. The 4865
validates the new code before saving it in its Flash memory.
8065
Ethern
et to
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Figure 3
GPIB
LAN Instrument
4865 LAN <=>GPIB Interface
4865 Instrument Network Connection
Network Features
The 4865 uses the VXI-11 protocol or RPC over TCP/IP to communicate with the test program (client application). The TCP transportation layer and IP protocol guarantees error free communication
with the 4865 over the network or Internet as long as the connection
is maintained.
4865 SPECIFICATIONS
Physical
Supported Standards
Companion Instrument
IEEE 488.1 Capabilities:
The 488-USB meets IEEE-STD-488.1 with the
following capabilities:
AH1, SH1, T6, L4, SR1, RL2, PP0, DC1,
DT1, C0 and E2
E2 Drivers incorporate power up/down
protection.
The 4865 supports single instrument that is VXI11.3 and IEEE-488.2 compatible.
Size 7.45" L x 5.57" W x 1.52" H
(18.92 cm L x 14.15 cm W x 3.86 cm H)
System Requirements
Weight
1.6 lbs. (0.73 kg.)
plus power adapter
Construction
RoHS Compliant
Temperature
Operating
Storage
-10 °C to +65 °C
-40 °C to + 70 °C
Humidity
0-90% RH non-condensing
Shock/Vibration
Normal handling
4865 Address
0 to 30 [0]
488 Bus Performance
Long term GPIB transfer rates are limited by
the LAN data transfer rate, the Client-computer
performance, the GPIB controller and the LAN
instrument or device. Internal delays vary with
the amount of data transferred and 4865's activity
when the message was received.
Short term transfer rates:
GPIB to 4865 >20 kbyte/s
4865 to GPIB >18 kbytes/s
Internal delays:
*IDN? query
46 ms typical
*CLS command 18 ms typical
Computer with an IEEE-488.2 GPIB Controller.
Device messages must be terminated with the
IEEE-488.2 new line terminator (linefeed with
EOI asserted) or with just EOI asserted if the LAN
instrument does not require a terminator.
Computer with an IEEE 802.3 LAN interface and
a web browser for configuring the 4865.
Internal WebServer
The internal WebServer provides HTML web
pages for viewing and setting the 4865's network
settings.
Controls and Indicators
CONTROLS
Power
LAN Reset
Supported GPIB (IEEE-488.1) Commands
Converted to the equivalent VXI-11 rpc.
Device Clear
Device Trigger
Local
Remote
Serial Poll
VXI-11 Capabilities
Fully VXI-11.3 compliant
VXI-11.3
Client side
Channel types Data
Instrument links 64 max
Locking
By instrument link
RPC Protocol
Conforms to ONC RPC Version 2
LEDs
PWR
LAN
ACT
RDY
TALK
LSTN
SRQ
ERR
Front-panel switch
Rear-panel push-button
Power on
Unit connected to an active
network or network device.
Transferring messages to/
from the network.
Blinks when looking for an
instrument. Steady on when
linked to an instrument
4865 is addressed to talk
4865 is addressed to listen
4865 asserting SRQ on the
GPIB bus.
Unit has detected an error
Connectors
GPIB
GPIB 24 pin ribbon
with metric studs.
RJ-45
Ethernet
Power
9 to 32 Vdc @ 4 VA
RFI/EMI
CE Certified
EEC Standards
EN 61000-6-4:2001,
EN 61000-6-2:2001,
EN 55024:1998,
and EN 55022:1998.
Included Accessories
Instruction Manual
CD-ROM with support information.
LAN Crossover Cable.
UL/CSA/VDE approved AC power Adapters
provided for:
US - 115±10% Vac, 60 Hz (std.)
-U Universal - 115/230±10% Vac, 50/60 Hz
with UK, Europe, Australia (China) and
US plugs
Ethernet Interface
Type
IEEE 802.3 compliant
Speeds
10BaseT (10 Mb/s)
100BaseT (100 Mb/s)
IP Address
Static or DHCP (AutoIP)
Factory setting DHCP with default to
169.254.48.65 if no DHCP
server found.
Net Mask
255.255.0.0
Interface name inst0
The VXI-11 Specification is available from the VXI Consortium at http://www.vxibus.org/specs.html or from ICS's website
at http://www.icselect.com/vxi_spec.html
ORDERING INFORMATION
Ethernet - GPIB Controller with 115 VAC adapter, Manual and CD-ROM
Ethernet - GPIB Controller with 115/230 VAC adapter with universal plug set, Manual and CD-ROM
GPIB Accessary Cables
Rack Mounting Kits (holds one or two 4865s). See separate data sheet
11/12
Copyright 2012 ICS Electronics, Specifications subject to change without notice
Part Number
4865
4865-U
See separate data sheet
Single - 114210, Dual - 114211
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