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K-LD2 Datasheet(PDF) 13 Page - RFbeam Microwave GmbH

Part No. K-LD2
Description  radar transceiver
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Maker  RFBEAM [RFbeam Microwave GmbH]
Homepage  https://www.rfbeam.ch/
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 13 page
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©
RFbeam Microwave GmbH | Schuppisstrasse 7 | CH-9016 St. Gallen | www.rfbeam.ch | K-LD2 | data sheet
09/2018 - Revision B | Page 13/20
Adjust hold time and sensitivity
The K-LD2 uses arrays with a width of 10 elements
to set the range of hold time and sensitivity (see pa-
rameters A00…A09 for hold time and parameters
A10…A19 for sensitivity). The used index of the arrays
is defined using the parameters D00 and D01 or  by
the analogue inputs, if these are enabled with the pa-
rameters S0B and S0C.
Serial Interface
The K-LD2 features a serial interface with a command
set to configure the sensor and read-out measured
data. The interface is an ASCII based 3.3V asynchro-
nous UART with the following settings:
– Baud rate 38400 bps
– 8 data bits
– 1 stop bit
– no parity, no handshake
This interface and the complete command set is sup-
ported by the K-LD2 Control Panel, which is included
in the K-LD2-EVAL evaluation kit.
analogue hold time input
hold time setting (D00)
analogue sensitivity input
sensitivity setting (D01)
S0C
hold time array
(A00…A09)
Detection
Algorithm
sensitivity array
(A10…A19)
S0B
0…9
hold time
sensitivity
0…9
array
value
index
index
array
value
Figure 13: Hold time and sensitivity block diagram
It is possible to connect the K-LD2 directly
with an USB to UART cable with +3.3V TTL
level signals. For example the TTL-232R-
3V3 from FTDI can directly be connected to
the pins 1 to 6 of the K-LD2 to power it and
get access to the serial interface over a stan-
dard terminal program.
In the factory settings these arrays are filled with de-
fault values that will work for the most applications.
(See Table Hold time array default values and Table
Sensitivity array default values) It is possible to overwri-
te these arrays to generate your own sensitivity or hold
time curves.




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