Confirmation Of Weather Alert Tone - Standard Horizon Quest GX1255S Service Manual

Alignment

Confirmation of Weather Alert Tone

In the weather channel mode, when transceiver receives
the specific emergency tone (1050 Hz), weather alert tone
will be output (Weather Alert Operation). The Weather
Alert mode will be active when a NOAA weather chan-
nel is in memory and radio is in memory scan or P-scan
mode.
— Confirmation —
r Connect the standard signal generator (SSG) to the
antenna jack.
r Squelch position set to tight.
r Press the [ SCAN ] key and start to Memory Scan mode.
r Set the SSG to 163.275 MHz (WX10) and output level
of the SSG to 20 dBµV, ±3.0 kHz deviation with 1050
Hz tone modulation.
r Set the output of the SSG to ON.
r Confirm that the channel of transceiver stops at WX10
and the transceiver outputs the weather alert tone (1050
Hz).
Confirmation of receiver NMEA data
Input NMEA format data output from GPS receiver to
NMEA terminal A of transceiver and display it to the LCD
of the transceiver.
NMEA format data output from GPS receiver is applied
to NMEA terminal of transceiver's option connector and
LCD of transceiver will show data.
— Confirmation —
r Setup the test equipment as shown below.
Blue
ACC Cable
GX1255S
Green
ACC Cable
r Press and hold the [ H/L ] key, confirm that the posi-
tion data is displayed on the LCD of transceiver.
12
NMEA Input (+)
GPS
Receiver
NMEA (GND)
Confirmation of DSC Operation
— Confirmation —
r Prepare the confirmation transceiver (GX1260S).
r Input below data to the confirmation transceiver in
advance.
- Input "TEST" to NAME of INDIVIDUAL DI-
RECTORY
- Input "123456789" to MMSI of INDIVIDUAL
DIRECTORY
- Input "123456780" to local MMSI
- Channel 13 in U.S.A. mode
r Setup the test transceiver as follows:
- Channel 21 in U.S.A.
r In 3 seconds, send the INDIVIDUAL CALL from the
conformation transceiver.
r Confirm that the test transceiver receives the INDI-
VIDUAL CALL from the conformation transceiver
and outputs the beep.
Press the [ CALL/SET ] key of the test transceiver and
turn off the beep.
Simultaneously, confirm that "123456780" of confor-
mation transceiver's MMSI is displayed in the LCD
of the test transceiver.
r Confirm that the conformation transceiver receives the
response from the test transceiver and outputs beep.
Press the [ CALL/SET ] key of the conformation trans-
ceiver and turn off the beep.
Simultaneously, confirm that "TEST" of test
transceiver's MMSI is displayed in the LCD of the
conformation transceiver.