Data Sheet

Communication Protocol

The last part of the data-path refers to ‘Communication protocol’ between TransducerM and PC (or any other device acquiring

data from the TransducerM).

Here, you’re able to set the following:

• ‘Power-on Silent Time’: This setting defines the time since power-on during which the TransducerM will not

spontaneously send out any data package. This setting is useful, for example, when TransducerM is permanently

connected to a PC via USB interface, where the TransducerM powers on together with the PC and where the PC is not

supposed to receive any data during its booting period. However, TransducerM still responses to requests during the

'Silent Time'. The minimum value of the Silent Time is zero, which is the default value.

• ‘Inhibit time’: the minimum time interval between two data packages. It is useful to avoid possible overwhelming of

the host device who is receiving TransducerM data. This setting only applies to data packages sent out spontaneously

from the TransducerM (i.e. do not apply to data packages responding to requests). A smaller inhibit time value (can be

as small as zero) results in higher output data package rate. On Windows PC and while using ImuAssistant to display

data, it is recommended to have an inhibit time larger than 8 ms so that the PC has enough time to respond to each

data package received.

• Port to be used (For TM100 and TM200 series, only UART is available) and their respective baud rate (data transfer

rate). For details regarding changing of UART baudrate, please refer to section ‘Change UART Baudrate’ on page 17.

Change UART Baudrate

For TM100 series, the data rate of UART1 is fixed to 115200 bps and cannot be changed.

For TM200 series, the data rate of UART1 can be changed by selecting the options as shown in Figure 28.

If you choose a data rate other than 115200 bps, since the ImuAssistant works with 115200 bps by default, you will experience

difficulties connecting to the module the next time. The solution is to simply execute the as described in 'Finding

Your Device' on page 6 within 6 seconds after powering on the TransducerM, under which circumstance the module will lock

its UART1 data rate to 115200 bps for the current session, and the communication between the module and ImuAssistant will

go normally.

Figure 27: Configuring Communication Protocol

Figure 28: Configuring UART 1 baudrate