Humminbird VHF255S-DSC, Руководство пользователя

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7 MAINTENANCE
Your VHF Marine Radio *** is a marine radio of water proof who can meet the
requirement of JIS level 7, gives you a good reliability when using in marine
circumstance.
The equipment is designed to be maintenance free. To keep your radio in good
working condition:
Never unscrew the equipment, either the base station or handset, For in
such case, the water proof performance will be greatly damaged.
If the radio becomes dirty and dusty, wipe it clean with a moisture cloth, but
pay attention to never using such solvents as benzene or alcohol, for they
may damage the radio surfaces.
Once your equipment does not work properly, never allow an unqualified
person to tamper with internal adjustments. Please contact the local dealer
for help.
TROUBLE SHOOTING
Item Symptom Cause/Remedy
1 Unit can not be powered
on. Check the connection to the base
station.
Check the volume control.
2 No sound comes from
the speaker Set [VOL] to a suitable level.
Set squelch to the threshold point.
3 Transmitting is
impossible, or high
power can not be
selected.
Check to see if the PTT switch is
defective.
Check to see if the microphone or MIC
jack is defective.
Some channels are for low power or
receive only, change to another channel.
Push H/L to select high power.
4 Low receiver sensitivity. Check to see if the antenna being bad
connected.
Check the connection between coaxial
cable and base station.
8 SPECIFICATION
TX Frequency…………………………...……… 156.050 ~ 157.425 MHz
RX Frequency 156.025 ~163.275 MHz
Channels........................………………………….. 55 USA Channels
55 INT Channels
10 Memory Channels
Modulation type.........................………………………..……………... FM
Antenna impedance...........................………………………...... 50 Ohm
Microphone...............................……………………...... condenser type
Power supply....................................………………………….. 13.8V DC
Sensitivity at 12dB Sinad.......................................……………..... 0.5
µµµµ
V
Adjacent Channel Rejection................................……………........ 70dB
Audio output power.............................……………........... 2W @ 8 Ohm
Audio Distortion ...............................……………………….............. 10%
RF Output Power....................…………………... High: 25W/Low: 1W
Harmonic Emissions................……………... High: 80dB/Low: 60dB
Dimensions (HWT)..........................................……..... 71×161×147mm
Weight …………………...................................…………………... 1290g