Hexin Technology HXJZ-878 10km-20km Middle Power RS-232/RS-485/TTL to RF Wireless Module - Manual (Page 8)

HXJZ-878 RF Data Radio User’s Manual
2
No transmit or
No receive
a、Radio is badness touch with PC/terminal.
b、Radio with TTL/RS232/RS485 not match
terminal. c、RX frequency and TX frequency is not same.
3 Bit error rate High
a、antenna not match, or touch bad;
b、RF baud rate is not right. c、
Power supply ripple is too great.
4
Indicator light
twinkling
a、Electromagnetism disturb in circumstance.
b、Same frequency disturb in the circumstance.