PXI topics

Frequency modulation in FPGA

Ashu.iitj — Tue, 21 May 2013 05:02:17 GMT

I wanted to generate a trigonometric signal with frequency as function of time in the code that will run on LabView FPGA PXIe 5641R. Can someone help me in this regard?

pxi 1031 error when using PXI 4132

edakoto — Tue, 21 May 2013 02:52:25 GMT

Hello,

I'm trying to use my old PXI-1031 as chassis for my PXI- 4132 SMU but i have problem on +12v supply from chassis.

Is PXI-4132 compatible with PXI- 1031? Additional to that I'm using PXI- 8196 controller and PXI- 7811R I/O.

I have attached the error message for reference.

Thanks!

eddy

RTSI signals in back plan

Vkumar — Wed, 15 May 2013 13:08:07 GMT

Hi all

I want to know about the hardware details of RTSI singals in PXI backplane.

Basically PXI specs specifies PXI Trigger lines. I am little bit confused between PXI trigger lines and RTSI lines. Are these two lines are different or same?

Thanks

"Waiting for real-time target (RT PXI target) to respond" error when the program waits interrupts

JPolo — Wed, 15 May 2013 12:51:57 GMT

Hi there,

I have developed an application to detect interrupts generated by a electronic card and act in consequence. The program has been developed in labview but it calls a dll; that was created with labwindows. The dll is programmed to open the visa communication, enable events and install the interrupt handler and when an interrupt is detected, it reads the value of the different registers of the card and returns it to labview to visualize them.

The problem is that when the program waits for an interrupt, a prompt appears with the message "Waiting for real-time target (RT PXI target) to respond" and the only option I have is to click on the button to disconnect from the pxi or just wait. If I wait and I generate an interrupt, the prompt disappears and the application visualize the data like it was expected.

To wait for the interrupt the following code has been programmed in the function:

while (flag == 0)

{

Sleep (1000);

}

When an interrupt occurs, the value of flag changes to 1 and the function continue without any problem. I am not really sure, but probably here is the problem and probably this is not the best way to wait for an interrupt because the sleep function suspends the thread for the configured time, but at least the computing load in the PXI is between 0% and 1%. I was wondering if somebody knows how to wait for an interrupt without "lost" the communication with the PXI and if there is a better way to do it.

Any answer will be welcome and thanks for them,

Jaime

Bad level on NI RFSA front panel with 5663

Choubahulk — Tue, 14 May 2013 12:04:48 GMT

Hello,

We own a PXIe-1075 chassis equiped like this :

Slot 1: PXIe-8108 “embedded controller”

Slot 2: empty

Slot 3: empty

Slot 4: empty

Slot 5: PXI-5650 RF Generator

Slot 6: PXIe-5601 RF Down converter

Slot 7: PXIe-5622 16bits digitizer

Slot 8: PXIe-5622 16bits digitizer

Slot 9: PXIe-5622 16bits digitizer

Slot 10: empty

Slot 11: PXIe-5622 16bits digitizer

Slot 12: PXIe-5622 16bits digitizer

Slot 13 to 18: empty

Slot 5 – Slot 6 – Slot 7 are coupled to form a Vector Signal Analyzer NI-PXIe-5663

If I want to use rapidly the NI-PXIe-5663, I open NI RFSA front panel, I use an external RF generator that give me CW waveform (500MHz for example) at 0dBm.

So I get this CW waveform on NI RFSA at 500MHz front panel but the level is -40dBm. So I don’t understand why?

So before this, I have test each board separately except the Down converter .I mean PXI-5650 RF Generator and PXIe-5622 16bits digitizer.

Spectral analyze of PXI-5650 RF Generator (tested with NI RFSG front panel) give me the right frequency and the right level, PXIe-5622 16bits digitizer (tested with NI SCOPE front panel displays the right frequency and the right level of an external RG generator.

But I don’t known how to test PXIe-5601 RF Down converter only.

On MAX each board test is right.

Depending on our applications we coupled or uncoupled boards of 5663.

We use LABVIEW 2011 with all update done

Would someone help me to understand this difference of level on NI RFSA front panel?

Best Regard

Choubahulk

Flashed PXIe-8105 with wrong BIOS?

janaf — Mon, 13 May 2013 20:04:13 GMT

I suspect I have flashed the wrong BIOS to a PXIe-8105, using a PXI-8105 1.4 BIOS (did not note the difference...) and now the PXIe-8105 does not boot. :smileymad: Autch. Are they compatible or is it a NoNo? Anything I can do to save the situation?

Driver problems with PXIe 8105

janaf — Mon, 13 May 2013 16:03:15 GMT

Hi,

I have problems with three unidentified devices on a PXIe 8105 in a PXIe 1062Q

- Fresh install of Win7 Pro -32 on freshly formatted disk. Patched.

- No Nidaq / MAX installed

Three device errors are displayed in the controll panel / devices:

1)" PCI Simple Communications Controller" PCI bus 23, device 6, function 0

"The drivers for this device are not installed" and I fail to find / install any

2) "Unknown device" on Intel(R) 82801GHM (ICH7-M/U DH) LPC Interface Controller - 27BD

"The drivers for this device are not installed" and I fail to find / install any driver

Hardware ID: ACPI\NIC7019

3) "Unknown device" on Intel(R) 82801GHM (ICH7-M/U DH) LPC Interface Controller - 27BD (same as previous...)

"The drivers for this device are not installed" and I fail to find / install any driver

Hardware ID: ACPI\NIC7019

Is there a driver package for W7 for the PXIe-8105 I should install?

Any clues?

PXI: Host and Target Application very basic example doesn't work

JuanCarlosCambera — Mon, 13 May 2013 10:07:08 GMT

Hello Everyone,

I wanted to create a very basic Host And Target Application in LV2010 but i couldn't make it work. I created my application following an example from: https://decibel.ni.com/content/docs/DOC-14699. I

It seems like this example was created for a Compact RIO, but it shouldn't be difficult to adapt it for a PXI. Here are the steps i followed to do this task:

1.- I added a new device (a PXI) in the project by clicking on the Project Tree, New>Target And Devices> Specify a Target and Device by IP Address

2.- I right-clicked on the new device and pressed Connect, and that worked fine.

3.- I copied the 'Target Vi.vi' file on the RT PXI Target tree

4.- I created a Source Distribution Buid Specification and added the 'Target VI.vi' to "the always included category". After that i pressed Build.

5.- 2.- I right-clicked on the PXI device and pressed Deploy all.

6.- I opened the 'Host.VI- Control Target VI', changed the IP address, and run the file.

When i pressed Start Remote VI, the program stops and one error is shown :

Error 63 occurred at Open Application Reference in Host VI - Control Target VI.vi

Possible reason(s):

LabVIEW: Serial port receive buffer overflow.
=========================
LabVIEW: The network connection was refused by the server.

I would greatly appreciate any help you might be able to give me. Attached please find the project files i tried.

Sincerely,

Juan Carlos Cambera

How to connect my laptop to PXIe-8100?

DPT — Thu, 09 May 2013 19:31:20 GMT

I have a PXIe-8100 controller that is in a PXIe-1071 chassis. I would like to use my laptop to control it instead of another set of monitor/keyboard/mouse. My computer runs Windows 7 Home Premium.

What are the cables I need and how do I connect the two so that my laptop will recognize the controller?

Thanks.

PXI 6682 characterization

dkennedy2010 — Thu, 09 May 2013 18:45:36 GMT

I am trying to characterize the time delay of the GPS signal on a PXI 6682. I have been able to do this with a calibrated source, and my two GPS devices (I get about 100ns delay), and I need to do this for the PXI 6682. I need to get the PXI 6682 to output a PPS signal that is synced to the GPS. Currently I have is set to 1588, but I don't think that is right.

I set up in MAX pfI2 to output a PPS signal, but what clock is it using to generate this? I want it to use a GPS signal to accurately see the synce. Thanks for the help, and I hope it wasn't too confusing.

Donald

Assembly part number for individual PXI chassis slot blockers?

Darrow — Thu, 09 May 2013 15:23:17 GMT

I need the individual assembly part numbers (not the catalog or packeaged kit number) for the standard 3U PXI chassis slot blockers. The ones we have accumulated are stamped with the part numbers below but I need to know if this is the part number for the "assembly" with fasteners, or just aluminum plate.

1 slot 185365C-01

2 slot 185365C-02

4 slot 185365C-04

also is there a there 3 slot available (perhaps a -03)?

Thanks,

Darrow

fpga

Aalhad1 — Thu, 09 May 2013 06:00:11 GMT

Hello,

I am using PXIe 7966R with 5761 adapter module. The range of frequency for the sample clock in 5761 is specified as 175MHz-250MHz.

I want the sampling rate to be 1MHz. How to do this?

Also in FPGA derived clock option, the lowest frequency which we can generate is 2.5 MHz. I want 1 MHz clock for my operations.

How to generate clock for the frequencies lower than 2.5 MHz?

Waiting for the reply.

Regards,

Aalhad

1_WIRE_LO_REF in NI PXI-2503

Mihye — Wed, 08 May 2013 22:16:27 GMT

Hello,

I've used NI PXI-2503 (serial ports) to read current output signals from a circuit, and 1_WIRE_LO_REF has been used for reference (voltage input to the circuit?). To switch over to parallel communication, I will use SCB-68. In this box, I have no idea which port is equivalent to 1_WIRE_LO_REF. Which port should I use in SCB-68?

Thanks,

Mihye

Problem reading PXI-2503 channels above 23 in 1-Wire 48x1 Mux mode in Linux

kenstern — Wed, 08 May 2013 19:07:13 GMT

I'm having trouble getting relay positions above 23 in the 1-wire 48x1 mode

% nilsdev | grep 2503
NI PXI-2503: "Dev1"

The topology is set to "2503/1-Wire 48x1 Mux" via the following API, using device "Dev1"

DAQmxSwitchSetTopologyAndReset(device,topology)

In theory that means there are 48 inidividual relays than can be read, however, the following fails:

switchname = "/Dev1/ch47"

DAQmxSwitchGetSingleRelayPos(switchName, &pos)

The error returned is:

DAQmx Error: Relay name is invalid.
Relay Name: ch47

Status Code: -200202

which is

#define DAQmxErrorInvalidRelayName (-200202)

I am unable to get the relay position for anything above relay 23 ( /Dev1/ch23 )

Is that the expected behaviour, or is there a driver or hardware issue ?

PXIe-8133 serial port driver

Gary1wang — Wed, 08 May 2013 16:03:42 GMT

Hi Guys

I am trying to use PXIe 8133 embedded Controller and the serial port appears as Unknow Device. The hardware ID is

ACPI\NIC7019. Can Someone suggest where i can download the driver for the serial port.

The Windows 7 32 bit is installed in tne embedded controller.
The Ni PXie-8133 Peripheral Driver 1.0, already download and installed

Thanks

Gary

RealTime target software for PXIe-8135RT

kostyuk.a — Tue, 07 May 2013 20:41:28 GMT

Hi, all

I'm new with NI equipment

I have PXI system with PXIe-8135 RT and LabVIEW 2012 with Real Time 2012 Module. So, I know i have to install some target software for 8135RT from my host computer. This looks like I need. But this target software is compatible only with LabVIEW Real-Time Module 2011. When i tried to install it, i got error message/ How can i solve this problem?

Downgrade just Realtime Module to 2011? Or downgrade every labview installations i've made? Maybe, is there another target software for 8135RT?

Thanks

to high measurement time for NI PXI 4132

edakoto — Tue, 07 May 2013 07:11:54 GMT

Hi,

I'm using 4132 to measure very small current of photo transistor device. with 25v source to the DUT it takes me more than 100ms to get an stable current reading.

How will i reduce measurement time?

tnx!

Data width in HSDIO

lahsiv — Sat, 04 May 2013 11:24:02 GMT

Hi All,

I am a new user of PXI . I have a doubt regarding data width in HSDIO ?

What exactly is the data width ?

Thanks,

Vishal

overstressing 2569 relay switches

FaizNaq — Thu, 02 May 2013 16:01:05 GMT

Can someone please tell me if passing 1A current through the PXI 2569 relay switches overstress these switches? Spec say that 1A is the maximum carry current, but does it mean that this value of the current cause any overstress? Also, if we have these switches in a circuit that is powered by a power supply, supplying 84V and 1A. In this scenario, will the switches be overstressed? I will really apperciate the help!

FPGA card 7811R/7813R with optical link 8375

sfla — Thu, 25 Apr 2013 11:31:55 GMT

Hello, I have a PXI package with FPGA card 7811R/7813R. This PXI package is connected to a pc via the optical link 8375.

I would like to know if it is possible to drive some FPGA output with the PC. The other output are driven by the software build with FPGA module LabVIEW.

Thanks