SHEN JIZHUO TECHNOLOGY CO. JZ881, User Manual, Page: 6 / 6

JZ873 Mini Power Wireless Module User ’ s Manual
Optional Antenna:
Trouble and solve ways:
NO. Trouble Trouble causes and solve ways
1
No shine of
Indicator light
a
、
Power Line badness touch .
b
、
Power is bad.
c
、
Power line meet in reverse, or diode of polarity protect is bad.
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.
Shenzhen Jizhuo technology CO.,LTD,China TEL：+86-755-83304518 http://www.jizhuo.com 5