What hardware interface to use

Hi ppl,
I am new to labview and need some info on hardware interface.
The objective is to attenuate a signal. We need 8 inputs and 8 output ports.
All we have to do is take in the signal from a input cable, attenuate and send the output to the o/p cable.
I was thinking GPIB board. How do you connect the cables to the GPIB board?
Do I need any extra hardware?
Any other cheaper option would be great.
Thank you guy!

Hi,
A GPIB board is a control interface, sort of like the serial port, for communicating with instruments, printers,plotters that have GPIB interfaces as well. It really isn't designed to be used as an direct I/O, but rather a specialized communications port. I was going to say it is like the parallel port, which technically it is, but I had just answered a question on interfacing inputs to the parallel port in another thread. I'm guessing that you have the GPIB board, if not, if you are looking at what interface card to buy there are a lot of possibilities, mostly dependent on your technical requirements and funds available. As I mentioned, it is possible to use the parallel port, and what you are describing might be better served by an external, "controlled" attenuator. It sounds like you want to pass a group of signals through some type of controlled attenuation. I'm not sure, without spending a little more time thinking about it, of anything readily available on the NI site. It also is dependent on the signal levels, frequency, expected attenuation, etc.
Give us a little more info on what you are trying to do,
Putnam Monroe
Certified LabVIEW Developer
Senior Engineer
North Shore Technology, Inc. a National Instruments Alliance member
Putnam
Certified LabVIEW Developer
Senior Test Engineer
Currently using LV 6.1-LabVIEW 2012, RT8.5
LabVIEW Champion

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On this page you found the supported NI hardware and here is the information the 6008 can be
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