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Radiometrix Ltd
TDL2 Data Sheet
page 5
Figure 5: TDL2 transmitting and receiving
The oscilloscope screen capture shows a single ASCII character being transmitted by TDL2. A BiM2-
433-160 transceiver is used to capture the transmitted data
The character appears on the serial data output (RXD) pin of the other TDL2 after about 11.3ms. Busy
(STATUS) pin is momentarily set high to indicate the presence of a valid data in the receive buffer of
the TDL2.
It can be clearly seen that unlike raw radio modules, TDL2 does not output any noise when there is not
any transmission. Data fed into the TXD input of a TDL2 appears at the RXD output of another TDL2
within radio range in the original form it was fed.
Figure 6: Bi-phase encoded TDL2 data packet (expanded view)
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