Raytheon STD 21 GPS Operation Manual page 98

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3717/110--850.DOC020002
Plug A3
Jumper "X800"
Plug A2
Three LED's (LED group)
Plug "A1"
Satellite Compass
STD 21 GPS
Connection for a RS422 interface
Terminator for Interface RS422 at
plug A2.
Should be inserted in general.
Connection for a RS422 interface
Interface information for all four
RS422 interfaces:
Upper LED (green)
-- RX--data:
Is blinking with the rhythm of
received data.
Is dark if there is no data to
receive.
Intermediate LED(yellow) is:
-- Constant yellow if the program
has been started and the
interface driver is o.k.
-- Is dark if the interface is
disturbed.
Lower LED (red)
-- TX--data:
Is blinking with the rhythm of
transmitted data.
Is dark if there is no data to
transmit.
Connection of Antenna Unit
90
Edition: Feb. 05, 2007