Device
and operation
CPC307
C P C 3 0 7 U s e r M a n u a l
54
© 2 0 2 2 F a s t w e l v . 0 0 6
resistor (Rcm+) is installed to set the initial high level on the TX+ line. A 2.2 kOhm (Rcm-)
protective bias resistor is installed on the TX- line to set the initial low level (Figure 4.23 a) (for
module versions older than 4.x)).
Figure 4.23. a) Transmitter with protective bias elements and terminating resistors (for module versions older
than 4.x)