Re: USB interface cable suitable for Suunto Vyper

This is besides the point really, since the data rate is set as the
speed of the channel opened by the Dive Manager software. Furthermore,
an essential feature of the product that it *must* emulate a serial
port (I'll let you figure out why!).

Since you are interested, the UART bridge on this device can work up to
921600baud, not 115200baud. Are you familiar with the dive computer
interface? It would indeed be more trivial if the dive computer had
lines for TX/RX and Gnd, which as you propose would allow direct
connection to the device UART. Unfortunately this is not the case.

Adam Helberg wrote:
> "Reuben" <orders@xxxxxxxxxxxxxx> wrote in message
> news:1124059322.829305.89670@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> >I am not exactly sure what you are asking here - the cable connects to
> > the PC USB port and it transfers data over the USB bus. You cannot put
> > serial speed comms over USB. USB and RS232 protocols are very
> > different. This is why you need a bridge which converts the RS232 type
> > protocol into a USB protocol.
> >
> > Adam Helberg wrote:
> >> "Reuben" <orders@xxxxxxxxxxxxxx> wrote in message
> >> news:1124038214.059228.276150@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> >> > No adam it is not. Perhaps you are looking at one of our other products
> >> > (a usb to uart converter, the hr-usbuart). Try:
> >> >
> >> > http://www.customidea.com/hr-usbdive1.php
> >> >
> >> > Reuben
> >>
> >> Does it transmit data at serial port speed or USB speed?
> >>
> >> Adam
>
> The old serial port can transfer data up to 115 Kbits/second, while USB2 can transfer
> up to 480 Mbits/second. There are converter cables such
> http://www.wcscnet.com/catalog/usb_to_serial_port_converter_1854881.htm
>
> that will plug into the USB port and emulate a serial port, but you're still limited
> to roughly serial port speeds.
>
> So if your cable is a true USB connector, and not a converter cable, it should
> transfer at USB rates. That's why I asked the question. I suspect your cable is a USB
> to serial converter like the one I listed above, with the Suunto connector plug at
> the end, and the software is still seeing a serial port?
>
> Adam

.

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