Hi,
I am developing a Real Time Flight Simulator System (RTFSS). This system is being realised using a PXI based controller, A/D card, D/A card, DIO card, RS422 card etc. The DIO and RS422 cards are having built-in opt-isolation. For Analog I/O section a separate signal conditioning cards needs to be fabricated. I was just going through your data sheet and I found ISO12x series suites my application. I need the following clarifications from you
The cables running from the RTFSS signal conditioning system will be of 10 meters length. For your information, I have an existing RTFSS system (VXI based system) which is employing a AD215BY IC from analog devices. Using this IC I am able to achieve around 20 mv end-to-end tolerance (from A/D or D/A card with cable looms of 2 meters length connected to Analog I/O signal conditioning and from Analog I/O signal conditioning cards to cable loom of 10 meters length) for full range of +/-10 V. The analog section of signal conditioning uses a load sense feedback circuitry. The cable running from signal conditioning to external system interface (10 meters) is a coaxial cable with an RC termination for all analog output channels.
Your data sheet mentions that the sense pin can be employed to reduce the IR loss in the cable. So kindly suggest me a typical circuit to achieve the end-to-end tolerance using the sense of ISO12x IC. Also, kindly suggest method to reduce other possible sources of noises.
Waiting for your reply.
Do mail to me for any additional info required from my side.
Thanks
with regards
Laxmikanth Bhat J