Excitation voltage

It's not very much at all. I see the term "5 uV/V/mmHg" mentioned several times. This is out of a M1006B PRESS module book. Apparently, older transducers (no longer used) used a 40 uV/V/mmHg standard. But the bottom line is it doesn't say directly what it is. It may be the 5 uV signal only.

Thanks Ray! I know the 5 uV/V/mmHg sensitivity is valid since all these IBP are according to the ANSI/AAMI B22 standard. However, the IBP port has four wires, Two that drives the transducer (excitation), and two that are the returned pressure from the transducer. The sensitivity tells how much you get returned, but what I look for is the exciation in the Philips IBP connection. Any ideas on that?

Thanks Ray! I know the 5 uV/V/mmHg sensitivity is valid since all these IBP are according to the ANSI/AAMI B22 standard. However, the IBP port has four wires, Two that drives the transducer (excitation), and two that are the returned pressure from the transducer. The sensitivity tells how much you get returned, but what I look for is the exciation in the Philips IBP connection. Any ideas on that?

No, not without opening up a module and reading off the ribbom cable of the connector. I have wondered what the voltage is but I never found out. I do have some of the older Abbott / ICU Medical cables, that take a RJ45 connector.. now I just need a passthru with access to each wire.. hmmm...

Hi Mats,

seems like I ran into the same problem you had. Were you able to find out what the excitation voltage is?

Thanks,

RJ_SA

Hi RJ_SA,

I measured the exitation from a Phillips Intellivue MP30 and it was 5.0V.

I am just curious: What are you trying to resolve?

Thanks

Mats

Hi Mats,

I am trying to connect a device that has to look like a wheatstone bridge. Since every monitor company has their own standard and excitation parameters, it makes things more complicated. Would you make the assumption that Philips used same excitation voltage across thier product lines or have you come across any differences?

Thanks,

RJ_SA

I've seen 3 types of patient transducer connections that make cables that terminate in the Philips PRESS connector. Two were Abbott, now ICU Medical, and the other is Edwards. But I'm fairly certain that the bridge technology is identical, with the only differences being the transducer connections.