overload occurs. A pair of test terminals, test+/test- can be used to determine supply
current by connecting them to an external voltmeter.
TYPICAL INSTALLATION: The XP15 accepts one NMEA talker input, such as a GPS.
The input signal is split into 5 outputs, four RS-422 and one RS-232. Multiple listeners
can be connected to each output as long as the yellow LED does not appear. When
connecting NMEA listeners to the XP15 outputs, observe the following:
Only connect the RS-422 outputs to RS-422 or opto-isolated listeners. If any output
(OUT-) is connected to a single-ended (grounded)
listener, the red LED will turn on indicating an output overload. In such cases, listeners
with their (-) input grounded such as PC’s, should connect the RS-232 output (TXD) to
the listener’s “Data In” or leave the
OUT–
disconnected from those listeners. (See
figure next page.)
An LED is included on the XP15 to aid in installation and troubleshooting. Whenever
input data is detected, the LED will momentarily flash green. A yellow LED usually
occurs when too many outputs are connected. The LED will turn red whenever the DC
current draw exceeds 80 milliamps. This can occur if any
OUT–
terminal is grounded.
Listeners should be connected to the
