Problems using FW-7344 with Fire Wire Video Cameras

Is it a bad idea to use the FW-7344 with other devices on the same fire wire bus?
We are trying to use an FW-7344 with a fire wire video camera but we tend to get packet errors that force a reset of the controller. We suspect that the problem is related with the camera and controller being on the same fire wire bus.
We instantly see problems when we connect two FW7344s and one video camera on the same fire wire card.

The NIMax program reads Packet Error. I can't recall the first error that our program reads, but I think it typically says something about not being able to communicate return values from the controller to the host computer.
This makes me think that the NI driver on the host does not retry after failing to get return data from the controller. This assumption may be valid with the PCI version, but probably is not with the FireWire version.
It only takes one camera for this problem to happen, but the problem is intermittent.

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Message was edited by: Mezcla

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I tried to use your code, but I couldn´t make it work (I don´t know Jython). I think the problem could be with the use of quotes
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File "<string>", line 5, in ?
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Problem using CORBA clients with RMI/EJB servers..!!!???

Hi,
I have a question on using EJB / or RMI servers with CORBA clients using
RMI-IIOP transport, which in theory should work, but in practice has few
glitches.
Basically, I have implemented a very simple server, StockTreader, which
looks up for a symbol and returns a 'Stock' object. In the first example, I
simplified the 'Stock' object to be a mere java.lang.String, so that lookup
would simply return the 'synbol'.
Then I have implemented the above, as an RMI-IIOP server (case 1) and a
CORBA server (case 2) with respective clients, and the pair of
client-servers work fine as long as they are CORBA-to-CORBA and RMI-to-RMI.
But the problem arises when I tried using the RMI server (via IIOP) with the
CORBA client, when the client tries to narrow the object ref obtained from
the naming service into the CORBA idl defined type (StockTrader) it ends up
with a class cast exception.
This is what I did to achieve the above results:
[1] Define an RMI interface StockTrader.java (extending java.rmi.Remote)
with the method,
public String lookup( String symbol) throws RMIException;
[2] Implement the StorckTrader interface (on a PortableRemoteObject derived
class, to make it IIOP compliant), and then the server to register the stock
trader with COS Naming service as follows:
String homeName =....
StockTraderImpl trader =new StockTraderImpl();
System.out.println("binding obj <" homeName ">...");
java.util.Hashtable ht =new java.util.Hashtable();
ht.put("java.naming.factory.initial", args[2]);
ht.put("java.naming.provider.url", args[3]);
Context ctx =new InitialContext(ht);
ctx.rebind(homeName, trader);
[3] Generate the RMI-IIOP skeletons for the Implementation class,
rmic -iiop stock.StockTraderImpl
[4] generate the IDL for the RMI interface,
rmic -idl stock.StockTraderImpl
[5] Generate IDL stubs for the CORBA client,
idlj -v -fclient -emitAll StockTraderImpl.idl
[6] Write the client to use the IDL-defined stock trader,
String serverName =args[0];
String symList =args[1];
StockClient client =new StockClient();
System.out.println("init orb...");
ORB orb =ORB.init(args, null);
System.out.println("resolve init name service...");
org.omg.CORBA.Object objRef
=orb.resolve_initial_references("NameService");
NamingContext naming =NamingContextHelper.narrow(objRef);
... define a naming component etc...
org.omg.CORBA.Object obj =naming.resolve(...);
System.out.println("narrow objRef: " obj.getClass() ": " +obj);
StockTrader trader =StockTraderHelper.narrow(obj);
[7] Compile all the classes using Java 1.2.2
[8] start tnameserv (naming service), then the server to register the RMI
server obj
[9] Run the CORBA client, passing it the COSNaming service ref name (with
which the server obj is registered)
The CORBA client successfully finds the server obj ref in the naming
service, the operation StockTraderHelper.narrow() fails in the segment
below, with a class cast exception:
org.omg.CORBA.Object obj =naming.resolve(...);
StockTrader trader =StockTraderHelper.narrow(obj);
The <obj> returned by naming service turns out to be of the type;
class com.sun.rmi.iiop.CDRInputStream$1
This is of the same type when stock trader object is registered in a CORBA
server (as opposed to an RMI server), but works correctly with no casting
excpetions..
Any ideas / hints very welcome.
thanks in advance,
-hari

On the contrary... all that is being said is that we needed to provide clearer examples/documentation in the 5.1.0 release. There will be no difference between the product as found in the service pack and the product found in the 5.1.1. That is, the only substantive will be that 5.1.1 will also
include the examples.
"<=one way=>" wrote:
With reference to your and other messages, it appears that one should not
expect that WLS RMI-IIOP will work in a complex real-life system, at least
not now. In other words, support for real-life CORBA clients is not an
option in the current release of WLS.
TIA
"Eduardo Ceballos" <[email protected]> wrote in message
news:[email protected]...
We currently publish an IDL example, even though the IDL programmingmodel in Java is completely non-functional, in anticipation of the support
needs for uses who need to use IDL to talk to the Weblogic server,
generically. This example illustrates the simplest connectivity; it does not
address how
to integrate CORBA and EJB, a broad topic, fraught with peril, imo. I'llnote in passing that, to my knowledge, none of the other vendors attempt
this topic either, a point which is telling if all the less happy to hear.
For the record then, what is missing from our distribution wrt RMI-IIOPare a RMI-IIOP example, an EJB-IIOP example, an EJB-C++. In this you are
correct; better examples are forth coming.
Still, I would not call our RMI-IIOP implementation fragile. I would saythat customers have an understandably hard time accepting that the IDL
programming model is busted; busted in the sense that there are no C++
libraries to support the EJB model, and busted in the sense that there is
simply no
support in Java for an IDL interface to an EJB. Weblogic has nothing to doit being busted, although we are trying to help our customers deal with it
in productive ways.
For the moment, what there is is a RMI (over IIOP) programming model, aninherently Java to Java programming model, and true to that, we accept and
dispatch IIOP request into RMI server objects. The way I look at it is this:
it's just a protocol, like HTTP, or JRMP; it's not IDL and it has
practically nothing to do with CORBA.
ST wrote:
Eduardo,
Can you give us more details about the comment below:
I fear that as soon as the call to narrow succeeds, the remainingapplication will fail to work correctly because it is too difficult ot
use an idl client in java to work.It seems to me that Weblogic's RMI-IIOP is a very fragile
implementation. We
don't need a "HelloWorld" example, we need a concrete serious example(fully
tested and seriously documented) that works so that we can get a betteridea
on how to integrate CORBA and EJB.
Thanks,
Said
"Eduardo Ceballos" <[email protected]> wrote in message
news:[email protected]...
Please post request to the news group...
As I said, you must separate the idl related classes (class files and
java
files) from the rmi classes... in the rmic step, you must set a newtarget
(as you did), emit the java files into that directory (it's not clearyou
did this), then remove all the rmi class files from the class path... ifyou
need to compile more classes at that point, copy the java files to theidl
directly is you must, but you can not share the types in any way.
I fear that as soon as the call to narrow succeeds, the remainingapplication will fail to work correctly because it is too difficult otuse
an idl client in java to work.
Harindra Rajapakshe wrote:
Hi Eduardo,
Thanks for the help. That is the way I compiled my CORBA client, by
separating the IDL-generated stubs from the RMI ones, but still I
get a
CORBA.BAD_PARAM upon narrowing the client proxy to the interfacetype.
Here's what I did;
+ Define the RMI interfaces, in this case a StockTrader interface.
+ Implement RMI interface by extendingjavax.rmi.PortableRemoteObject
making
it IIOP compliant
+ Implemnnt an RMI server, and compile using JDK1.2.2
+ use the RMI implementation to generate CORBA idl, using RMI-IIOPplugin
utility rmic;
rmic -idl -noValueMethods -always -d idl stock.StockTraderImpl
+ generate Java mappings to the IDL generated above, using RMI-IIOPplugin
util,
idlj -v -fclient -emitAll -tf src stocks\StockTrader.idl
This creates source for the package stock and also
org.omg.CORBA.*
package, presumably IIOP type marshalling
+ compile all classes generated above using JDK1.2.2
+ Implement client (CORBA) using the classes generated above, NOTthe
RMI
proxies.
+ start RMI server, with stockTrader server obj
+ start tnameserv
+ start CORBA client
Then the client errors when trying to narrow the obj ref from the
naming
service, into the CORBA IDL defined interface using,
org.omg.CORBA.Object obj =naming.resolve(nn);
StockTrader trader =StockTraderHelper.narrow(obj); // THIS
ERRORS..!!!
throwing a CORBA.BAD_PARAM exception.
any ideas..?
Thanks in advance,
-hari
----- Original Message -----
From: Eduardo Ceballos <[email protected]>
Newsgroups: weblogic.developer.interest.rmi-iiop
To: Hari Rajapakshe <[email protected]>
Sent: Wednesday, July 26, 2000 4:38 AM
Subject: Re: problem using CORBA clients with RMI/EJBservers..!!!???
Please see the post on june 26, re Errors compiling... somewherein
there,
I suspect, you are referring to the rmi class file when you are
obliged
to
completely segregate these from the idl class files.
Hari Rajapakshe wrote:
Hi,
I have a question on using EJB / or RMI servers with CORBA
clients
using
RMI-IIOP transport, which in theory should work, but in practice
has
few
glitches.
Basically, I have implemented a very simple server,
StockTreader,
which
looks up for a symbol and returns a 'Stock' object. In the firstexample, I
simplified the 'Stock' object to be a mere java.lang.String, so
that
lookup
would simply return the 'synbol'.
Then I have implemented the above, as an RMI-IIOP server (case
1)
and a
CORBA server (case 2) with respective clients, and the pair of
client-servers work fine as long as they are CORBA-to-CORBA andRMI-to-RMI.
But the problem arises when I tried using the RMI server (via
IIOP)
with
the
CORBA client, when the client tries to narrow the object ref
obtained
from
the naming service into the CORBA idl defined type (StockTrader)
it
ends
up
with a class cast exception.
This is what I did to achieve the above results:
[1] Define an RMI interface StockTrader.java (extending
java.rmi.Remote)
with the method,
public String lookup( String symbol) throws RMIException;
[2] Implement the StorckTrader interface (on a
PortableRemoteObject
derived
class, to make it IIOP compliant), and then the server to
register
the
stock
trader with COS Naming service as follows:
String homeName =....
StockTraderImpl trader =new StockTraderImpl();
System.out.println("binding obj <" homeName ">...");
java.util.Hashtable ht =new java.util.Hashtable();
ht.put("java.naming.factory.initial", args[2]);
ht.put("java.naming.provider.url", args[3]);
Context ctx =new InitialContext(ht);
ctx.rebind(homeName, trader);
[3] Generate the RMI-IIOP skeletons for the Implementation
class,
rmic -iiop stock.StockTraderImpl
[4] generate the IDL for the RMI interface,
rmic -idl stock.StockTraderImpl
[5] Generate IDL stubs for the CORBA client,
idlj -v -fclient -emitAll StockTraderImpl.idl
[6] Write the client to use the IDL-defined stock trader,
String serverName =args[0];
String symList =args[1];
StockClient client =new StockClient();
System.out.println("init orb...");
ORB orb =ORB.init(args, null);
System.out.println("resolve init name service...");
org.omg.CORBA.Object objRef
=orb.resolve_initial_references("NameService");
NamingContext naming=NamingContextHelper.narrow(objRef);
... define a naming component etc...
org.omg.CORBA.Object obj =naming.resolve(...);
System.out.println("narrow objRef: " obj.getClass() ":"
+obj);
StockTrader trader =StockTraderHelper.narrow(obj);
[7] Compile all the classes using Java 1.2.2
[8] start tnameserv (naming service), then the server to
register
the
RMI
server obj
[9] Run the CORBA client, passing it the COSNaming service ref
name
(with
which the server obj is registered)
The CORBA client successfully finds the server obj ref in the
naming
service, the operation StockTraderHelper.narrow() fails in thesegment
below, with a class cast exception:
org.omg.CORBA.Object obj =naming.resolve(...);
StockTrader trader =StockTraderHelper.narrow(obj);
The <obj> returned by naming service turns out to be of the
type;
class com.sun.rmi.iiop.CDRInputStream$1
This is of the same type when stock trader object is registeredin a
CORBA
server (as opposed to an RMI server), but works correctly with
no
casting
excpetions..
Any ideas / hints very welcome.
thanks in advance,
-hari

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Also, while my projector does have a zoom function, it will not magnify the small iPad mirror image correctly (if I were to leave the Apple TV and projector on a 16:9 setting). It cuts off the top and sides. But even if it didn't crop the image, it's a digital zoom, so that option still won't fix the fact that I'm not getting a full 800x600 image on the projector. The same problem would apply if I were to move the projector farther away from the screen (so that the widescreen image takes up the full height of the projector screen, while spilling off the sides). I'll still have a lower resolution image, which isn't ideal since I'm often showing text on the screen through Keynote. Also, widescreen videos wouldn't fit on the screen, and I can't move the projector easily because it's fixed to the ceiling.
Sorry for the long explanation. Any ideas? I'd really appreciate some insight.

We have the same problem, and not only with ipads. Macbook Air is doing something similar. it can only use airplay with 1080 and 720 resolution, so the image is squeezed on a 4:3 projector. We use AppleTV 3 and Mountain Lion OS. We use ATVPRO from Kanex.
Apple must get its act together and fix this, they promise gold and green forests, but nothing works.
DO SOMETHING!

X220i Express card with Fire Wire 400 adaptor

I'd like to know if there is a suitable Expresscard for the x220i that has a Fire Wire port. I already bought one but it didn't slot in properly although it does fit an older IBM laptop that I have. I need to download stuff from a video camera and don't want to buy the wrong thing again. Any suggestions would be appreciated.
Solved!
Go to Solution.

Hello,
My understanding is that the X220i (like my X220) has an ExpressCard/54 slot, that is, an ExpressCard slot which is 54mm wide. Any 54mm or 34mm wide ExpressCard should fit in there, but older 16-bit PCMCIA or 32-bit CardBus cards will not, as they have different connectors.
OWC, Rain Computers, SIIG, Sonnet, StarTech and SYBA all make FireWire ExpressCard adapters which should work fine with your X220i.
Regards,
Aryeh Goretsky
I am a volunteer and neither a Lenovo nor a Microsoft employee. • Dexter is a good dog • Dexter je dobrý pes
S230u (3347-4HU) • X220 (4286-CTO) • W510 (4318-CTO) • W530 (2441-4R3) • X100e (3508-CTO) • X120e (0596-CTO) • T61p (6459-CTO) • T43p (2678-H7U) • T42 (2378-R4U) • T23 (2648-LU7)
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Problem using dual monitors with Radeon 9000 Pro and 2 x Samsung SM223BW

Hello all
I really need an expert opinion here:
I am using quite a lot my MDD 1.25Ghz that is still equipped with the OEM ATI 9000 Pro Mac Edition with 64MBs of Video RAM and as most if not all Mac-specific cards it has an ADC and a DVI port. I recently purchased a couple of Samsung monitors; the afore mention in the subject SM223BW. The monitors have two inputs, both DVI and D-SUB (Analog VGA or otherwise plain old RGB).
I have purchased a Formac ADC to DVI converter and connected this output to the DVI input of the first monitor. It works like a charm and the picture quality it is quite good (not as with an Apple Display but I couldn't afford them at this stage). For the second monitor I used a DVI to VGA cable (going from the DVI output of the card to the VGA In of the monitor).
Now here is the problem: The monitor that is connected ADC to DVI has all the available 16:10 ratio option that are suitable for this monitor. The DVI to VGA one gives me only a 1680x1050 and all the rest are 4x3 resolutions.
Would anyone know why this happens? Could it be a monitor issue? Could it be that perhaps TFT monitors offer different resolutions according to the input used. Or could it be the graphics card? Or even perhaps the cable?
Under OS X, same settings and same computer I am given more resolution options. Would that mean that it might be as well my beloved OS 9 in combination with the card?
Or am I stressing this too far?
Please any ideas are more than welcome
PS: I have a dual 2.0Ghz G5 connected to the rest of the DVI and VGA inputs to be able to run both without having to repatch. Otherwise a DVI to DVI connection would have made more sense and solved the problem

Hey Simon
I bought these monitors for their dual input functionality. The reason that I have the G4 connected to VGA is because I have another G5 connected the other way around in order to be able to use both computers, at any given time, with two screens.
Perhaps to make clear the connections I've done (if of course anyone is interested :)) ...
The G4 connects via ADC to DVI to the DVI input of Monitor No.1
The G5 connects via VGA to VGA to Monitor No.1
The G4 connects via DVI to VGA to Monitor No.2
The G5 connects via DVI to DVI to Monitor No.2
Another question would be why simply one mac isn't connected solely via DVI and the other one via VGA? The reason is that the VGA input looks awful on these screens for whatever reason. The image is seriously not sharp, the fonts looks horrendous and even with a lot of tweaking from the monitor settings, still I'd say the image is minging. If anyone knows why a VGA input can look that bad and still a monitor being in the market please let me know. It could be that this monitor is aimed to PC users and with the accompanying PC-only drivers all such are non-existent...Anyway I decided to go with the half DVI-half VGA solution to get the best out of the situation.
But on the question asked, I decided to use a 2 DVI input Avocent KVM that I've got with interesting results. I am pretty sure it is boring to read but if anyone has spare time here it goes:
The G4 connects via ADC to DVI to Monitor 1.
Monitor 2 DVI output connects to DVI KVM Input
The G4 connects via DVI to DVI to KVM Output 1
The G5 connects via DVI to DVI to KVM Output 2
The G5 still connects via VGA to VGA to Monitor 2
In this manner I am guaranteed to utilize the DVI inputs for both monitors, at least on my G4 and the G5 be forced to utilize one VGA. The plus side of the situation is that I can use both systems with the flick of a button without having to get up to change the Source on the monitors plus of course one keyboard and a mouse. Now here is the interesting bit:
Under OS 9, with the resolution 1280x800 on Monitor No.1 (the one connected via ADC to DVI) flips to - I think - 1680x1050 - it could be higher than that - with a thick black frame around the Desktop occupying a good chunk of the screen and the actual OS 9 looking minuscule at the center of it.
Monitor No.2 (the DVI to DVI connected one) looks just fine.
Now on top of that, when the G5 is switched on but the KVM is outputting the G4 desktop on Monitor No.2, whenever the mouse cursor slides on this monitor, it goes black! Just simply black and when I move the mouse cursor back on Monitor No.1 goes Desktop again.
Under OS X, none of the afore mentioned problems exist. Everything runs fine and I am give more 16:10 resolutions as well.
Confused? I am

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