ASM-232-M ( RS-232 DCE Null Modem & Link Tester )

Features & Specification 

• No Power required   
• Standard RS-232 DCE to DTE Null Modem &　Link Tester
• With  DB-9 / M  &  DB-9 / M Connectors 
• Easy to install , Plug & Play
• Stander  RS-232 Port 
• Fully compliant with RS-232 Spec.
• With double colors LED appeared 
• Easy cheek data transfer & receiver
• Compact size 
• Fit display of RS-232 working
• To RS-232 DCE connecter : DB9 - F 
• Out RS-232 DTE connecter : DB9 - M 
• Data rate : Up to 1000 K bps   
• With GND & Shell Test's LED
• Single / TTL out 1 - LED appear Green (V-)
• Single / TTL out 0 - LED appear Red (V+)
• Housing : Plastic, 
• Weight : 55g
• Dimensions (L*W*H) : 45 * 35 * 21 ( mm )    body

• DB - 9 /   DB - 9    Pin assignment

• Pin1    /   Pin1    :   DCD  <== IN

• Pin2    /   Pin3    :   TXD   <== IN

• Pin3    /   Pin2    :   RXD    ==>  OUT

• Pin4    /   Pin6   :   DSR    ==>  OUT

• Pin5    /   Pin5    :   GND

• Pin6    /   Pin4    :   DTR    <== IN

• Pin7    /   Pin8    :   CTS     ==>  OUT

• Pin8    /   Pin7    :   RTS     <== IN

• Pin9    /   Pin9   :    RI        <== IN