Why don’t you just use a media converter.
Convert from USB to fiber. I think the max length is then something like 2Km. then convert back
Simon
_____
From: Achim.Vantheemsche@economie.fgov.be [mailto:Achim.Vantheemsche@economie.fgov.be]
Sent: 04 August 2008 08:07
To: VRF
Subject: Re: RE: [vrf] USB and VEE and max distances
Hello,
Last week we have set up such a connection.
It consists of an Agilent E5813A Networked 5-port USB Hub, an USB extender of 2m, and then an Agilent 5805A 4 port USB-RS232 serial converter.
(Windows XP, IOexpert 15, HPVEE 8.5).
It works fine.
Greetings,
Achim Van Theemsche.
fukui.yutaka@jp.fujitsu.com
04/08/2008 06:49
Please respond to
fukui.yutaka@jp.fujitsu.com
To
VRF <vrf@agilent.com>
cc
Subject
Re: RE: [vrf] USB and VEE and max distances
Hi,
If I remember correctly, combination of Agilent's E5813A
Networked 5-port USB Hub and FTDI's US232B USB-Serial converter
worked well.
Regards,
FUKUI Yutaka
----- Original Message -----
>From: "Shawn Fessenden" <shawn@vrfarchive.com>
>To: VRF <vrf@agilent.com>
>Subject: RE: [vrf] USB and VEE and max distances
>Date: Sun, 3 Aug 2008 22:35:59 -0500
>
>
>> However I can't recall what the
>> specifications insist upon.
>
>I think I remember reading 2 meters? I suppose you could just have a USB hub
>every two meters. Might be pretty ugly though
>
>> Also there are scads of network capable hubs out there
>
>Maybe an Ethernet Virtual Comm port might be a better idea.
>http://www.comtrol.com/products/deviceservers
>
>I see they don't make VSComm any more, but once upon a time we used several
>VSComm servers to connect 96 34970's to VEE. The software was a bit klunky
>at the time, but I'm sure it's improved in the last 10 years. Basically you
>tell the driver the IP address of the device, how many comm ports to
>manufacture, where they should start and presto - suddenly there are a
>number of comm ports available to VEE.
>-SHAWN-
>
>
>
>
>---
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>
== ? =====================================================================
FUJITSU ???(?)????[?9-432] ?????????
?????????)??·?????????? ? ?? ? (FUKUI Yutaka)
INTERNET E-Mail: fukui.yutaka@jp.fujitsu.com
TEL: 044-754-2238(ext:711-5-3153) FAX: 044-754-2434(ext:711-5-3178)
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Convert from USB to fiber. I think the max length is then something like 2Km. then convert back
Simon
_____
From: Achim.Vantheemsche@economie.fgov.be [mailto:Achim.Vantheemsche@economie.fgov.be]
Sent: 04 August 2008 08:07
To: VRF
Subject: Re: RE: [vrf] USB and VEE and max distances
Hello,
Last week we have set up such a connection.
It consists of an Agilent E5813A Networked 5-port USB Hub, an USB extender of 2m, and then an Agilent 5805A 4 port USB-RS232 serial converter.
(Windows XP, IOexpert 15, HPVEE 8.5).
It works fine.
Greetings,
Achim Van Theemsche.
fukui.yutaka@jp.fujitsu.com
04/08/2008 06:49
Please respond to
fukui.yutaka@jp.fujitsu.com
To
VRF <vrf@agilent.com>
cc
Subject
Re: RE: [vrf] USB and VEE and max distances
Hi,
If I remember correctly, combination of Agilent's E5813A
Networked 5-port USB Hub and FTDI's US232B USB-Serial converter
worked well.
Regards,
FUKUI Yutaka
----- Original Message -----
>From: "Shawn Fessenden" <shawn@vrfarchive.com>
>To: VRF <vrf@agilent.com>
>Subject: RE: [vrf] USB and VEE and max distances
>Date: Sun, 3 Aug 2008 22:35:59 -0500
>
>
>> However I can't recall what the
>> specifications insist upon.
>
>I think I remember reading 2 meters? I suppose you could just have a USB hub
>every two meters. Might be pretty ugly though
>
>> Also there are scads of network capable hubs out there
>
>Maybe an Ethernet Virtual Comm port might be a better idea.
>http://www.comtrol.com/products/deviceservers
>
>I see they don't make VSComm any more, but once upon a time we used several
>VSComm servers to connect 96 34970's to VEE. The software was a bit klunky
>at the time, but I'm sure it's improved in the last 10 years. Basically you
>tell the driver the IP address of the device, how many comm ports to
>manufacture, where they should start and presto - suddenly there are a
>number of comm ports available to VEE.
>-SHAWN-
>
>
>
>
>---
>You are currently subscribed to vrf as: fukui.yutaka@jp.fujitsu.com
>To subscribe please send an email to: "vrf-request@lists.it.agilent.com" with
the word subscribe in the message body.
>To unsubscribe send a blank email to "leave-vrf@it.lists.it.agilent.com".
>To send messages to this mailing list, email "vrf@agilent.com".
>If you need help with the mailing list send a message to
>"owner-vrf@it.lists.it.agilent.com".
>Search the "unofficial vrf archive" at "http://www.vrfarchive.com/vrf_archive
".
>Search the Agilent vrf archive at "http://vee.engineering.agilent.com".
>
== ? =====================================================================
FUJITSU ???(?)????[?9-432] ?????????
?????????)??·?????????? ? ?? ? (FUKUI Yutaka)
INTERNET E-Mail: fukui.yutaka@jp.fujitsu.com
TEL: 044-754-2238(ext:711-5-3153) FAX: 044-754-2434(ext:711-5-3178)
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I am currently configuring a system to make use of a USB to serial conversion device to effectively add a third com port to it. The system is located at one physical location of the lab and the work area for the hardware being tested is parked at the other end.
Problem: The physical distance between everything may be more then what USB can effectively use. However I can't recall what the specifications insist upon.
Also there are scads of network capable hubs out there, two come to mind, one from Belkin, and one from Keyspan, they also make USB to serial adapters as well. Can the drivers which are supplied by the IO Libraries use these devices to talk to such an adapter plugged into such a hub?
Incidentally this USB to serial device isn't made by them, it's one of the FTDI parts, a FT232R device, itself mounted on a break out board made by Sparkfun, ( http://www.sparkfun.com ) Ironically the host computer is running Windows XP, and has SP3 applied, and the thing chose COM3 as it's port. The first machine to use this thing also has
SP3 installed, and at the time of the first tests, it too used COM3.
-----
Gregg C Levine gregg.drwho8@gmail.com
"This signature was once found posting rude messages in English in the Moscow subway."
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