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Connect the wire antenna supplied with the test box to RF OUT and use this setup:
If the signal is not strong enough to enable the test, you may connect the RF Amplifier (optional
accessory) as shown below.
1) In the Send mode, select frequency and press OK.
2a) Select Carr if you wish to send the un-modulated carrier. Press EXIT to stop transmission.
2b) Select Msg to send a pair of test messages – a navigational warning and a SAR message.
3) Use ↑ or ↓ to set the number of times you wish to transmit the test messages.
4) Use ↑ or ↓ to set the transmitter site letter in your NAVTEX message.
5) Press OK to send. The display will count down for every pair of test messages being sent.
6) Check that the NAVTEX receiver receives/prints the following messages:
NAVTEX MESSAGE
0123456789ABCDEFGHIJKLMNOPQRSTU
NAVTEX TEST SEQ BY FUTRONIC
GMDSS TEST BOX
NAVTEX MESSAGE
0123456789ABCDEFGHIJKLMNOPQRSTU
NAVTEX TEST SEQ BY FUTRONIC
GMDSS TEST BOX
SECOND TIME
FIRST MESSAGE ID 01
*) Transmitter site letter (X) may vary. Depends on your own setting.
The messages are identified by X = Transmitter site, Z = "No messages on hand" (for test
purposes), D = SAR message, 00-99 = Message No.
Please note that the NAVTEX receiver may have been set to neglect routine messages with a
transmitter ID letter and message number already received within a certain period of time. If so,
a test signal from the test box may also be neglected. In order to solve this problem, the test
box automatically adds 09 to every routine message number being sent.
Changing the Transmitter ID letter in the test message may also solve the problem.
SAR messages are always received, even if they are transmitted repeatedly.
XZ01 *
XD00 *
NAVTEX RECEIVER
ANT.
NAVTEX RECEIVER
ANT.
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