Question about Televison & Video

2 Answers

Problem connecting from usb to db9

Hi i just bought a usb to db9 cable . i need to reprogram an ecu i fitted to my car but my laptop doesnt have a serial port (only usb)and it is not connecting to the ecu . i use to do this with my friends laptop which had a serial port .What can i do? Thanks

Posted by on

  • nexia Jun 01, 2008

    no because the ecu only have a Db9 sochet and the laptop has only USB

×

2 Answers

Not all USB ports are the same on all computers. There is USB and then there is USB 2.0. Many computers/laptops have both. The difference is in the speeds supported and whether or not there is voltage on the pins. Some laptops do not have enough voltage to run the device that is plugged into the USB ports.

Try this: If there is more than one USB port then try another one. If this STILL does not work then get an adapter or multiport hub that has an external power supply with it. See D-Link's Hi-speed USB 2.0 4Port Hub.

Posted on Jun 01, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Guru:

    An expert who has written 7 tips or uploaded 3 video tips

  • Master
  • 859 Answers

Hello,

There are serial port to USB adapters, but can't you use a USB cable by itself? You can find the adapters at cyberguys.com or milestek.com

Regards,
Worldvet

Posted on Jun 01, 2008

  • Glenn Rogers
    Glenn Rogers Jun 01, 2008

    Okay, get yourself a DB9 to USB. Be ready to describe what type connector you have male or female and the USB will be Type B

    Regards and good hunting, you can search Froogle from Google.
    Worldvet


×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

How I can transfer my files from a Acterna 5100E OTDR to my laptop? It only has a standard internal flash drive and 9 pin output. I have the original software.


This devices interface is extremely old technology the 9 pin connector is most likely a rs232 serial interface . If your laptop has a 9 pin rs232 interface you may need a DTE to DCE adapter .
if you do not have this old rs232 port on your laptop I think this device a usb to null modem rs232 DB9 Serial DCS Adapter Cable with FTDI.
http://www.startech.com/au/Cards-Adapters/Serial-Cards-Adapters/USB-to-Null-Modem-RS232-DB9-Serial-Adapter-Cable-DCE-FTDI~ICUSB232FTN
https://en.wikipedia.org/wiki/Null_modem
from my reading of the manual a null modem may be needed

Nov 16, 2015 | Cell Phones

1 Answer

How do i upload test results from my lt8600t tester to my PC. I have USB ports in my PC no serial port. What do i need?


Ah, yes, I too used Waveteks back in the old days and I still have old PCs with serial cards in them which typically came with the PC. They were never really all that expensive to replace.
Anyway, newer PCs typically lack serial (DB9) ports/cards; and simply using a USB-to-DB9 adapter on a device designed to use a DB9 interface won't help the PC "find" the unit attached to it. Theres no easy "plug-and-play" there. The PC wants to have drivers for the unit installed manually, then with some luck something will show up in Device Manager. Conversely the old Wavetek wants to see X number of pins, etc. or it will assume somethings wrong.

There are a few "USB to RS-232 DB9 Serial Drivers" (e.g. "Prolific" brand) to be downloaded here and there, I can't tell how effective they are, depending on your PC hardware/software.

Feb 16, 2015 | Wavetek Acterna LT 8600T Network Testing...

1 Answer

Does an exact fit used ECU need to be reprogrammed on my 1998 s70 volvo


You can try a Hard Reboot, remove the battery cables from the battery, wait 20 minutes then make contact with the + an - cables together for at least 10 seconds. Normally you would want to run a diagnostic on the new computer if it cam out of another car just to erase the codes from the other car.

Sep 06, 2012 | 1998 Volvo S70

1 Answer

Hi, just bought the HP DESKJET 1050 J410 printer, scan and copy and the usb lead that is meant to connect to the laptop/computer doesnt fit the printer. The other end to the usb lead is a completly...


Hi ,
One side of the lead is designed to fit on the computer , the other one on your HP unit . If nothing fits on any side , you need to go back to your retailer where a correct cable will be given to you , in exchange for the previous one .
Best regards .

Feb 10, 2011 | HP PSC 1410v All-in-One Printer

1 Answer

I cannot install the mouse to my pc.


Its very easy , what type of mouse, and what interface does the mouse have, if its USB connect to a usb port on the system, if its the DB9 pin type connect it to the db9 port, and once connected the system will identify the hardware automatically, if it requires drivers, it will request for it and follow the instructions

Apr 24, 2010 | Gateway Computers & Internet

1 Answer

Mainboard does not recognize the PS/2 mouse


Sounds like the serial port died. I have seen that happen before. You could try a DB9 to PS/2 adapter or DB9 to USB. The DB9 to PS/2 is cheaper of the 2.

Hope this helps.

Mar 01, 2009 | Shuttle HOT-591P (MB591P) Motherboard

1 Answer

Rj45 male to db9 male cable for ups


If you have a BackUPS CS, you are probably either using it with the USB cable that is supplied or with the 940-0128A supplied by APC, which permits running the UPS in dumb mode. By building your own cable, you can now run the BackUPS CS models (and perhaps also the ES models) using smart signalling and have all the same information that is available as running it in USB mode.
The jack in the UPS may be easily use a 8 pin RJ45 connector. It is easy to construct the cable by cutting off one end of a standard RJ45-8 ethernet cable and wiring the other end (three wires) into a standard DB9F female serial port connector.
PC Signal PC pin UPS Pin UPS signal RxD 2 2 TxD TxD 3 8 RxD GND 5 7 Ground FG Shield 4 Frame Ground Though these UPSes are USB UPSes, APC supplies a serial cable (typically with a green DB9 F connector) that has 940-0128A stamped into one side of the plastic serial port connector.
Here is suggested scheme of original 940-0128A cable
APC Part# - 940-0128A computer --------- Inside the Connector--------- UPS DB9-F | | RJ45 pin - signal | | Pin - Color | | 4 DSR ->|---+ | | | diode resistor | 6 DTR ->|---+---->|----///---o kill power | 8 Orange | | 1 DCD <-|----+ | | | | 2 RxD <-|----+----------------+--o low battery| 3 Brown | | | 7 RTS ->|----------+--///--+ | | | | | +--///--+ | | | | 8 RI <-|----+----------------+--o on battery | 2 Black | | | 9 CTS <-|----+ | | signal | 5 GND --|-----------------------o ground | 7 Red | | 3 TxD | | | chassis | Chassis/GND |-----------------------o ground | 4 Black | | | Not connected | 1, 5, 6, 9, 10 --------------------------------------

Sep 30, 2008 | Digi (76000200)

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

353 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

71672 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

6694 Answers

yadayada
yadayada

Level 3 Expert

67912 Answers

Are you a Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...