RS485 to RS232 adpater RS485-1
 		 
 
Parameter Description Min. Max. Unit
Supply voltage Derived from computer serial port 7 15 V
Supply current Derived from computer serial port 2 5 mA
NMEA in/out        
Input voltage tolerance Continuous operation -15 +15 V
  Short term operation (< 1 sec) -35 +35 V
Differential input voltage Required level for data to be detected 1.8 - V
Output voltage threshold Logical LOW 0 0.5 V
  Logical HIGH 4.8 5.2 V
Output current Dependent on computer serial port - 10 mA
RS232 in/out        
Input voltage tolerance   -15 +15 V
Input voltage threshold Logical LOW 0.8 1.2 V
  Logical HIGH 1.7 2.8 V
Output voltage range 3k ohm load, 'V' = RS232 port voltage -V +V V
Output resistance Output voltage swing +/- 2V 200 - ohms
General        
Baud rate   2400 115200 bps
Ambient temperature   -20 +70 °C