Input signals – Northern Airborne Technology STX100 User Manual
Page 13
SM67 Rev. 4.10
STX100-000 Globalstar
™
Satphone Transceiver Manual
Input Signals
+28 Vdc Power
Main input power
On/Off Control
On - 15 mA maximum
Off - open circuit
Chassis Ground
Airframe connection
RF RX
50
Ω - receive RF
TX Data
Data Port serial data - Transmit Data
DTR
Data Port serial data - Data Terminal Ready
RFR
Data Port serial data - Ready For Receiving
DM TX Data
DM Port serial data - Transmit Data
DM RTS
DM Port serial data - Request To Send
Output Signals
Power Ground
Main input power ground
RF TX
50
Ω - transmit RF, 2 W maximum
RLSD
Data Port serial data - Received Line Signal Detect
RX Data
Data Port serial data - Receive Data
CTS
Data Port serial data - Clear To Send
RI
Data Port serial data - Ring Indicator
DM RX Data
DM Port serial data - Receive Data
DM CTS
DM Port serial data - Clear To Send
Bi-directional Signals
Tip POTS
Ring POTS
Shield POTS
Serial Ground
Data Port serial data – Signal Ground
DM Serial Ground DM Port serial data – Signal Ground
Sep 7, 2005
Page 1-3
ENG-FORM: 800-0107.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.