Tone Test - Furuno FS-1575 Service Manual

5.6 TONE TEST

Select [MENU] -> 1.TEST -> 3.TONE TEST to open the Sub-menu "TONE TEST."
"TONE TEST" is more convenient than "TX POWER (xxx)" of the Service menu for
ensuring the setting of the TX output power and frequency of SSB mode.
Procedure)
1. On the "RT SETUP" window, make setting of SSB frequency and output power
level to "HIGH," "MID," or "LOW."
2. Select [MENU] -> 1.TEST -> 3.TONE TEST to open the Sub-menu "TONE
TEST."
Note)
Unless "MODE" is set to "SSB," the Sub-menu "TONE TEST" does not
open.
3. Open the Sub-menu "TONE TEST," and then select on "TX TONE."
To make measurement of TX output power and frequency at a time, select on
"1500Hz."
4. Press the PTT on the handset. Transmission will be initiated. Then, ensure the
setting of the TX output power and frequency. The frequency deviation is within
±10 Hz.
SSB output frequency = Set TX frequency + 1500 Hz (one-tone)
5. Press the PTT on the handset. Transmission will be initiated. Then, ensure the
setting of transmission frequency. The frequency deviation is within ±10 Hz.
Reference)
When selecting [MENU] -> 7.AUDIO -> 2.OFF HOOK SP -> "SP ON," 1785 Hz
space tone signal will be outputted from the speaker. This allows for ensuring the
setting of tone frequency.
CONFIDENTIAL (internal use only)
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It is strictly prohibited to reproduce the document in whole or in part without prior written permission of FURUNO.
1-Tone: 1500Hz
2-Tone: 1100/1700Hz, 700/1700Hz
Note) TX output power by
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5.6 TONE TEST
2-Tone signal comes to
approx. half that of 1-tone
signal.