User's Manual

SD250NTG–USERGUIDE
April4,
2011

MidlandRadioCorporation

10
Status indicators
The LED indicates the current status. The details are shown below:
NO DESCRIPTION LED COLOR STATUS REMARK
1 POWER RED
Power On
2 HSD_TX RED Host Serial Data Transmission
3 HSD_RX GREEN Host Serial Data Reception
4 TX_EN RED RF transmitter Enable
5 RX_EN GREEN RF receiver Enable
6 TDF ORANGE Valid Message Transmission
7 RDF YELLOW Valid Message Reception
8 PLL_LOCK GREEN PLL frequency synthesizer Lock