RF63 datasheet(30/91 Pages) ETC2

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ADVANCED COMMUNICATIONS & SENSING

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RF63

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Set RF63 in OOK Rx mode Adjust Bit

Rate, Channel filter BW Default

RXParam_OOK_thresh setting No

input signal

Continuous Mode

Monitor DATA pin (pin 20)

Increment

MCParam_OOK_floor_thres

Glitch activity

on DATA ?

Optimization complete

Figure 23: Floor Threshold Optimization

The new floor threshold value found during this test should be the value used for OOK reception with those receiver

settings.

Note that if the output signal on DATA is logic

“1”, the value of MCParam_OOK_floor_thres is below the noise floor

of the receiver chain. Conversely, if the output signal on DATA is logic

“1”, the value of MAParam_floor_thres is

several dB above the noise floor.

3.4.10.2. Optimizing OOK Demodulator Response for Fast Fading Signals

A sudden drop in signal strength can cause the bit error rate to increase. For applications where the expected

signal drop can be estimated the following OOK demodulator parameters RXParam_OOK_thresh_step and

RXParam_OOK_thresh_dec_period can be optimized as described below for a given number of threshold

decrements per bit RXParam_OOK_thresh_dec_period:

•

000 - once in each chip period (d)

•

001 - once in 2 chip periods

•

010 - once in 4 chip periods

•

011 - once in 8 chip periods

•

100 - twice in each chip period

•

101 - 4 times in each chip period

•

110 - 8 times in each chip period

•

111 - 16 times in each chip period

For each decrement of RXParam_OOK_thresh_step:

•

000 - 0.5 dB (d)

•

001 - 1.0 dB

•

010 - 1.5 dB

•

011 - 2.0 dB

•

100 - 3.0 dB

•

101 - 4.0 dB

•

110 - 5.0 dB

•

111 - 6.0 dB

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