OPERATOR'S MANUAL
SSB RADIOTELEPHONE
FS-1570
FS-2570
MODEL
FS-5070
www.furuno.com
9-52 Ashihara-cho,
*
00016050113
**00016050113
*
*
00016050113
**00016050113
*
Nishinomiya, 662-8580, JAPAN
Telephone : +81-(0)798-65-2111
Fax : +81-(0)798-65-4200
The paper used in this manual
is elemental chlorine free.
・FURUNO Authorized Distributor/Dealer
All rights reserved.
Pub. No. OME-56560-D3
(REFU ) FS-5070/1570/2570
Printed in Japan
A : NOV 2006
D3 : OCT . 06, 2011
* 0 0 0 1 6 0 5 0 1 1 3 *
.
IMPORTANT NOTICE
General
• The operator of this equipment must read and follow the descriptions in this manual.
Wrong operation or maintenance can cancel the warranty or cause injury.
• Do not copy any part of this manual without written permission from FURUNO.
• If this manual is lost or worn, contact your dealer about replacement.
• The contents of this manual and equipment specifications can change without notice.
• The example screens (or illustrations) shown in this manual can be different from the
screens you see on your display. The screens you see depend on your system
configuration and equipment settings.
• Save this manual for future reference.
• Any modification of the equipment (including software) by persons not authorized by
FURUNO will cancel the warranty.
• All brand and product names are trademarks, registered trademarks or service marks of
their respective holders.
How to discard this product
Discard this product according to local regulations for the disposal of industrial waste. For
disposal in the USA, see the homepage of the Electronics Industries Alliance
(http://www.eiae.org/) for the correct method of disposal.
How to discard a used battery
Some FURUNO products have a battery(ies). To see if your product has a battery, see the
chapter on Maintenance. Follow the instructions below if a battery is used. Tape the + and terminals of battery before disposal to prevent fire, heat generation caused by short circuit.
In the European Union
The crossed-out trash can symbol indicates that all types of
batteries must not be discarded in standard trash, or at a trash site.
Take the used batteries to a battery collection site according to your
national legislation and the Batteries Directive 2006/66/EU.
In the USA
The Mobius loop symbol (three chasing arrows) indicates that Ni-Cd
and lead-acid rechargeable batteries must be recycled. Take the used
batteries to a battery collection site according to local laws.
Cd
In the other countries
There are no international standards for the battery recycle symbol. The number of symbols
can increase when the other countries make their own recycling symbols in the future.
Ni-Cd Pb
i
SAFETY INSTRUCTIONS
The user and installer must read the appropriate safety instructions before attempting to install
or operate the equipment.
Indicates a hazardous situation which, if not avoided, will result in
DANGER
WARNING
CAUTION
death or serious injury.
Indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury.
Warning, Caution
DANGER
Never touch the SSB antenna, antenna
coupler or lead-in insulator when the
SSB radiotelephone is transmitting.
High voltage which will cause death or
serious injury is present at the locations
shown in the illustration below when the
SSB radiotelephone is transmitting.
Antenna
Antenna Wire
(High Voltage)
Antenna
Coupler
Indoor
WARNING
Do not open the equipment.
Only qualified personnel should work
inside the equipment.
Immediately turn off the power at the
switchboard if water leaks into the
equipment or something is dropped
into the equipment.
Continued use of the equipment can cause
fire or electrical shock. Contact a FURUNO
agent for service.
Do not disassemble or modify the
equipment.
Fire, electrical shock or serious injury can
result.
Wire
Lead-in
Insulator
(High
Voltage)
Prohibitive Action
Immediately turn off the power at the
switchboard if the equipment is emitting
smoke or fire.
Continued use of the equipment can cause
fire or electrical shock. Contact a FURUNO
agent for service.
Do not operate the equipment with
wet hands.
Electrical shock can result.
Turn off the power immediately
if you feel the equipment is behaving
abnormally.
Turn off the power at the switchboard if
the equipment becomes abnormally warm
or is emitting odd noises. Contact a
FURUNO dealer or agent for advice.
Make sure no rain or water splash leaks
into the equipment.
Fire or electrical shock can result if water
leaks in the equipment.
Use the proper fuse.
Use of the wrong fuse can cause fire
or electrical shock.
Mandatory Action
WARNING
Do not place liquid-filled containers on
the top of the equipment.
Fire or electrical shock can result if a liquid
spills into the equipment.
ii
WARNING
CAUTION
Do not operate the [DISTRESS] button
except in case of a life-endangering
situation on your vessel.
If the distress alert is accidentally
transmitted, contact the nearest coast
station and inform them of the accidental
transmission, providing the following data:
Operating the [DISTRESS] button
transmits the distress alert. Accidental
transmission may prevent search and
rescue operations for actual emergency.
If the distress alert is accidentally
a) Ship's name
b) Ship's call sign and DSC number
c) Position at time of transmission
d) Time of transmission
transmitted, contact the nearest station
to cancel the alert.
Do not apply strong pressure to the
LCD, which is made of glass.
Injury can result if the LCD breaks.
WARNING LABEL(S)
Do not remove any safety label.
If a label is missing or damaged, contact a FURUNO agent or dealer about replacement.
DANGER
Hazardous voltage.
,
Can shock
burn
or cause death.
Do not touch antenna
,
wire
insulator and
terminal.
Name: Danger Label
,
Type:
05-062-0213-0
Code No.:
100-199-230
WARNING
To avoid electrical shock, do not
remove cover. No user-serviceable
parts inside.
ANTENNA
COUPLER
Name: Warning Label (1)
Type: 86-003-1011
Code No.: 100-236-231
TRANSCEIVER
UNIT
iii
DISTRESS ALERT MESSAGE PROCEDURE
Below is the procedure for transmitting a distress alert via radiotelephone. Transmit the
distress alert when a life-endangering situation occurs on your vessel.
1. Open the DISTRESS button cover and press the DISTRESS button more than four
seconds to show the following display, then release the DISTRESS button.
Distress button
pressed!
NATURE: UNDESIGNATED
POS:
12°34.0000 N
123
°
TELEPHONE
DSC FREQ : 2187.5kHz
45.0000E AT 12:34
KEEP PRESSED FOR 2S
2. After the distress message has been transmitted, the follo wing displays appear in order.
2182.0 kHz
Wait for distress
acknowledgement.
NATURE: UNDESIGNATED
POS:
12 34.5678N
123 45.6789E AT 12:34
TELEPHONE
DSC FREQ :
TIME TO GO: 2M10S
2. 4. 6. 8. 12. 16. M
RESENDING
When distress message is
acknowledged by coast
station (usually within
1 min to 2 min 45 seconds)
Distress acknowledge
message received.
CANCEL: STOP ALARM
NATURE: UNDESIGNATED
POS:
12 34.5678N DIST: 0nm
123 45.6789E AT 12:34
TELEPHONE
2182.0 kHz
3. The audio alarm sounds; press the CANCEL key to silenc e the alarm.
4. Communicate with the coast station via radi otelephone as below.
Say MAYDAY three times.
Say “This is …” name of your vessel and your message sign three times.
Give nature of distress and assistance needed.
Give description of your vessel (type, number of persons onboard, etc.) and any other
information which may aid in rescue.
Note: If the distress message is not acknowledged by coast stat ion, it will be transmitted
again after 3 min 30 seconds to 4 min 30 seconds.
For IC-302 (option) operatio n
1. Open the DISTRESS button cover and press the DISTRESS button more than four
seconds.
2. After the distress message has been transmitted, t he length of the beep changes from
short to long.
3. Release the DISTRESS button.
4. Do step 4 shown in the Distress Alert Message Procedure above with the
radiotelephone.
iv
CANCELING DISTRESS ALERT
You can cancel t he distress call while
it is being sent or while waiting for its acknowledgement as follows.
1. Press the CANCEL key.
When the following message appears, do the following.
Distress Proc. is
Paused.
NATURE: UNDESIGNATED
POS:
12 34.5678N
RESUME RESEND CANCEL
123 45.6789E
DSC FREQ :
TIME TO GO : 0S
2. Rotate the ENTER knob to choose CANCEL at the screen, and then push the ENTER
2187.5 kHz
knob.
Warning:
Distress Cancel Step
NATURE: UNDESIGNATED
POS:
12 34.5678N
YES NO
123 45.6789E
DSC FREQ :
TIME TO GO : 0S
2187.5 kHz
3. Rotate the ENTER knob to choose YES, and then push the ENTER knob to show the
following screen.
Distress Cancellation Proc.
Select frequency
and push ENTER.
NATURE: UNDESIGNATED
POS:
12 34.5678N
Cancel: Back to pause menu.
123 45.6789E
2M-2187.5 kHz 8M-8414.5kHz
4M-4207.5kHz 12M-12577.0kHz
6M-6312.0kHz 16M-16804.5kHz
The cancellation message is transmitted over the same frequency used to transmit the
distress call.
Now Transmitting Distress
Cancellation Message
NATURE: UNDESIGNATED
POS:
12 34.5678N
123 45.6789E
2M-2187.5 kHz 8M-8414.5kHz
4M-4207.5kHz 12M-12577.0kHz
6M-6312.0kHz 16M-16804.5kHz
v
CANCELLING DISTRESS ALERT
4. Communicate, via radiotelephone, with the coast station.
Send cancel msg. by voice
on 2182.0 kHz.
NATURE: UNDESIGNATED
POS:
12 34.5678N
Push any key: Go next step.
123 45.6789E
*2M-2187.5 kHz 8M-8414.5kHz
4M-4207.5kHz 12M-12577.0kHz
6M-6312.0kHz 16M-16804.5kHz
Asterisk marks the frequency over which
the cancellation call was transmitted..
5. Press any key.
If you used other frequencies to send the distress call, cancel dist ress call on those
frequencies by repeating steps 3 to 5.
When all cancellation is completed, the RT display appears.
vi
TABLE OF CONTENTS
FOREWORD......................................................................................................xii
SYSTEM CONFIGURATIONS ........................................................................... xiv
1. OPERATIONAL OVERVIEW.........................................................................1-1
1.1 Controls.....................................................................................................................1-1
1.2 Tu rn i ng the Power On/Off..........................................................................................1-2
1.3 Radiotelephone (RT) Screen .....................................................................................1-2
1.4 DSC Standby Screen.................................................................................................1-3
1.5 Control Unit Dimmer, Contrast...................................................................................1-4
1.6 Loudspeaker..............................................................................................................1-4
1.7 Setting Scan Frequencies..........................................................................................1-4
1.8 Setting for Auto Acknow ledgemen t ............................................................................1-5
1.9 System Characteristics..............................................................................................1-5
1.9.1 Equipment priority...........................................................................................1-5
1.9.2 Controls become inoperati ve...........................................................................1-5
1.9.3 Controls become operative..............................................................................1-5
1.9.4 Automatic setting of working frequency...........................................................1-6
1.10 Intercom ....................................................................................................................1-6
2. SSB RADIOTELEPHONE.............................................................................2-1
2.1 Choosing Class of Emission......................................................................................2-1
2.2 Choosing Channel, Frequency ..................................................................................2-2
2.3 Transmitting...............................................................................................................2-3
2.3.1 Transmitting procedure....................................................................................2-3
2.3.2 Reducing transmitter power.............................................................................2-4
2.3.3 Condition of the transmitting unit.....................................................................2-4
2.4 Receiving...................................................................................................................2-5
2.4.1 RF gain (sensitivity) adjustment.......................................................................2-5
2.4.2 S-meter...........................................................................................................2-5
2.4.3 Receiving AM broadcasting stations................................................................2-6
2.4.4 Squelch function..............................................................................................2-6
2.4.5 Noise blanker.................................................................................................. 2-6
2.5 When Au tomatic Tu ning Fails ....................................................................................2-7
2.6 User Channels...........................................................................................................2-8
3. DSC OVERVIEW...........................................................................................3-1
3.1 What is DSC?............................................................................................................3-1
3.2 DSC Message ...........................................................................................................3-1
3.3 Audio A larms.............................................................................................................3-3
3.4 Interpreting Call Displays...........................................................................................3-4
3.4.1 Receive calls...................................................................................................3-4
vii
TABLE OF CO NTENTS
3.4.2 Send calls....................................................................................................... 3-5
4. DISTRESS OPERATIONS ............................................................................4-1
4.1 Sending Distress Alert............................................................................................... 4-1
4.1.1 Sending distress alert by DISTRESS button, nature of distress not specified . 4- 2
4.1.2 Sending distress alert by DISTRESS button, nature of distress specified ....... 4-4
4.2 Receiving a Distress Alert.......................................................................................... 4-7
4.2.1 Distress alert received on MF band................................................................. 4-7
4.2.2 Distress alert received on HF band................................................................4-10
4.3 Sending Distress Relay on Behalf of a Ship in Distress............................................4-14
4.3.1 Sending distress relay to coast station ...........................................................4-14
4.3.2 Sending distress relay to area ships ..............................................................4-18
4.4 Receiving Distress Relay from Coast Station............................................................4-21
4.5 Cancelling Distress Call ...........................................................................................4-21
5. RoutINE MESSAGE CALLING, RECEIVING ...............................................5-1
5.1 Individual Call............................................................................................................ 5-1
5.1.1 Sending an individual call................................................................................ 5-1
5.1.2 Receiving an individual call............................................................................. 5-7
5.2 Group Call................................................................................................................5-12
5.2.1 Sending a group call......................................................................................5-12
5.2.2 Receiving a group call....................................................................................5-14
5.3 Geographical Area Call ............................................................................................5-15
5.3.1 Sending a geographical area call...................................................................5-16
5.3.2 Receiving a geographical area call................................................................5-17
5.4 Neutral Craft Call......................................................................................................5-19
5.4.1 Sending a neutral cra ft call.............................................................................5-19
5.4.2 Receiving a neutral craf t ca ll..........................................................................5-20
5.5 Medica l Transport Call..............................................................................................5-21
5.5.1 Sending a medical transport call....................................................................5-21
5.5.2 Receiving a medical transport call..................................................................5-23
5.6 Receiving a Polling Request.....................................................................................5-24
5.6.1 Automatic reply..............................................................................................5-24
5.6.3 Manual reply..................................................................................................5-25
5.7 Position Call.............................................................................................................5-26
5.7.1 Requesting other ship’s position ....................................................................5-26
5.7.2 Position call: other ship requests your position...............................................5-28
5.8 PSTN Call................................................................................................................5-30
5.8.1 Sending a PSTN call, receiving acknowledge back (ACK BQ).......................5-30
5.8.2 Receiving a PSTN call, sending acknowledge back (ACK BQ)......................5-33
5.8.3 PSTN call disconnection, r eceiving charge information
(ship disconnects line)....................................................................................5-35
5.8.4 PSTN call disconnection, r eceiving charge information
(coast station disconnects line) ......................................................................5-36
5.9 Log File....................................................................................................................5-36
5.9.1 Opening a log file...........................................................................................5-36
5.9.2 Deleting log files............................................................................................5-37
viii
TABLE OF CONTENTS
6. MENU OPERATION ......................................................................................6-1
6.1 Adjusting Handset Volume.........................................................................................6-1
6.2 Noise Blanker............................................................................................................6-2
6.3 Squelch Frequency....................................................................................................6-2
6.4 User Channels...........................................................................................................6-2
6.4.1 Registering user channels...............................................................................6-2
6.4.2 Deleting user channels....................................................................................6-4
6.5 Prepari ng T X Message..............................................................................................6-4
6.5.1 Preparing individual calls.................................................................................6-4
6.5.2 Prepari ng group calls......................................................................................6-7
6.5.3 Preparing PSTN calls......................................................................................6-9
6.5.4 Prepari ng test call..........................................................................................6-10
6.5.5 Sending prepared messages......................................................................... 6-11
6.5.6 Deleting send message................................................................................. 6-11
6.5.7 Printing List of Send Message Files ..............................................................6-12
6.6 Manual Entry of Position and Time..........................................................................6-12
6.7 Date and Time Setting.............................................................................................6-14
6.8 Memory Clear..........................................................................................................6-14
6.9 Setting A larms.........................................................................................................6-16
6.10 Sound Setting..........................................................................................................6-17
6.11 Setting the AUTO ACK Details.................................................................................6-18
6.12 Printing Messages................................................................................................... 6-19
6.13 Setting Scan Frequencies........................................................................................6-20
6.14 Key Assignmen t.......................................................................................................6-22
6.15 Special Messages....................................................................................................6-22
6.16 FAX Enable/Disable.................................................................................................6-23
6.17 Speaker Setting in Off Hook.....................................................................................6-23
6.18 Operation T ime r Off.................................................................................................6-23
7. NBDP SYSTEM OVERVIEW.........................................................................7-1
7.1 Turning on the NBDP System....................................................................................7-1
7.2 Description of Equipment...........................................................................................7-2
7.2.1 Terminal unit....................................................................................................7-2
7.2.2 Keyboard.........................................................................................................7-3
7.3 Function Keys, Menu Operation.................................................................................7-4
7.3.1 Menu conventions...........................................................................................7-4
7.3.2 Menu overview................................................................................................7-5
7.3.3 Function key description..................................................................................7-6
8. NBDP PREPARATIONS................................................................................8-1
8.1 Registering Answerbac k Code & ID Codes................................................................8-1
8.1.1 Registering answerback code .........................................................................8-1
8.1.2 Registering ID codes.......................................................................................8-2
8.2 Station List.................................................................................................................8-3
8.2.1 Registering stations.........................................................................................8-3
8.2.2 Editing/Deleting stations..................................................................................8-4
8.3 Timer Programming...................................................................................................8-5
8.3.1 Registering timer programs.............................................................................8-5
ix
TABLE OF CO NTENTS
8.3.2 Editing/Deleting timer programs...................................................................... 8-6
8.4 User Channels.......................................................................................................... 8-6
8.4.1 Registering user channels............................................................................... 8-6
8.4.2 Editing/Deleting user channels........................................................................ 8-7
8.5 Scan Channel Groups............................................................................................... 8-7
8.5.1 Registering scan channel groups.................................................................... 8-7
8.5.2 Editing/Deleting scan channel groups............................................................. 8-8
9. NBDP FILE OPERATIONS ...........................................................................9-1
9.1 Opening and Closing Files ........................................................................................ 9-1
9.2 Creating Files............................................................................................................ 9-1
9.3 Saving a File............................................................................................................. 9-2
9.3.1 Formatting floppy disks................................................................................... 9-2
9.3.2 Saving a file.................................................................................................... 9-3
9.4 Editing Files............................................................................................................... 9-3
9.4.1 Cutting and pasting text.................................................................................. 9-3
9.4.2 Copying and pasting tex t................................................................................. 9-4
9.4.3 Select all ......................................................................................................... 9-5
9.4.4 Searching text................................................................................................. 9-5
9.4.5 Replacing text................................................................................................. 9-6
9.4.6 Goto line......................................................................................................... 9-6
9.4.7 Goto top, Goto bottom .................................................................................... 9-6
9.5 Opening Files............................................................................................................ 9-7
9.5.1 Opening a file.................................................................................................. 9-7
9.5.2 Switching between files................................................................................... 9-7
9.6 Renaming Files......................................................................................................... 9-7
9.7 Saving a File Under a New Name ............................................................................. 9-8
9.8 Deleting Files............................................................................................................ 9-8
9.9 Real Time Printin g..................................................................................................... 9-8
9.10 Printing Files ............................................................................................................. 9-8
10. NBDP TRANSMITTING, RECEIVING..................................................10-1
10.1 Manual Calling .........................................................................................................10-1
10.2 ARQ Mode Operation...............................................................................................10-3
10.3 FEC Mode Operation ...............................................................................................10-5
10.4 Choosing Receive Mode ..........................................................................................10-5
10.5 Communication Example..........................................................................................10-6
10.6 Timer Operation.......................................................................................................10-8
10.6.1 Enabling timer operation................................................................................10-8
10.6.2 S topping timer operation................................................................................10-9
10.7 Scanning..................................................................................................................10-9
10.8 Communication Buffer............................................................................................ 10-10
10.9 Preparing Macrofiles for Automatic Telex................................................................10-10
10.9.1 Automatic telex overview.............................................................................10-10
10.9.2 Preparations................................................................................................10-11
10.9.3 Commands..................................................................................................10-12
10.9.4 Store-and-forward method...........................................................................10-13
10.10 Automatic Telex using Macrofile ........................................................................10-17
x
TABLE OF CONTENTS
11. MAINTENANCE & TROUBLESHOOTING..........................................11-1
11.1 Radiotelephone Test................................................................................................ 11-1
11.2 Maintenance............................................................................................................ 11-2
11.3 Simple Troubleshooting........................................................................................... 11-3
11.4 Error Messages....................................................................................................... 11-4
11.5 Re p lacement of Fuses............................................................................................. 1 1 -5
11.6 Test Call...................................................................................................................11-6
11.7 NBD P Terminal Unit Maintenance............................................................................ 11-8
11.7.1 Cleaning the equipment ................................................................................ 11-8
11.7.2 Connectors and earth connection.................................................................. 11-8
11.7.3 Floppy disk drive........................................................................................... 11-8
11.7.4 Diagnostics ................................................................................................... 11-8
APPENDIX ......................................................................................................AP-1
Menu Tree ...................................................................................................................... AP-1
NBDP terminal unit (telex) ...................................................................................... AP-2
Frequency Tables............................................................................................................ AP-3
Digital Interface (IEC 61162-1)...................................................................................... AP-17
Parts List....................................................................................................................... AP-22
Parts Location............................................................................................................... AP-26
INDEX............................................................................................................... IN-1
DECLARATION OF CONFORMITY
xi
FOREWORD
Thank you for purchasing the FS-1570/2570/5070 SSB Radiotelephone. We are confident
you will discover why FURUNO has become synonymous with quality and reliability.
Dedicated in the design and manuf act ure of marine electronics equipment for 60 years,
FURUNO Electric Company has gained an unrivaled reputation as a world leader in the
industry. This is the result of our technical excellence as well as our worldwide dist ribution
and service network.
Please carefully read and follow the saf et y information and operating and maintenance
instructions set forth in this manual bef ore attempting to operate the equipment and conduct
any maintenance. Your unit will perform to the utmost of its ability only if it is operated and
maintained in accordance with the correct procedures.
Features
The FS-1570/2570/5070 is an MF/HF SSB Radiotelephone with a built-in DSC/Watch
Receiver, all contained in a surprisingly compact cabinet. An NBDP (Narrow Band Direct
Printing) Terminal Unit is optionally available.
Data is displayed on a large, easy-to-read backlit LCD. Operation is simplified by the use of
few keys and easy-to-follow menus.
The built-in DSC/watch receiver produces and r eceives digital selective calls for quick and
efficient establishment of distress, urgency, safety and routine communications with other
ships and coast stations that install any MF/HF DSC facilities.
The main features are
General
Fully meets the following regulations: IMO A.806(19), IMO A.694(17), IMO A. 813(19), MSC
68(68) Annex 3, IEC 61097-3 Annex A, IEC 61162-1 (200 0), IEC 60945 (2002),
EN 300 373-1 (2002), ETS 300 067A1(1998), EN 300 338(2004), EN 301 033 (2005),
ITU-R M.493-11, M.541-9, M.476-5, M.491-1, M.492-6, M.625-3, M.1173-3.
Automatic entry of position with manual override
Optional printer can automatically print out DSC and NBDP received messages and test
results.
SSB
• Receiving voice communication, telex and AM.
• Facsimile sig nal receiving
• Simplified setting of channel and frequency.
xii
FOREWORD
DSC/watch receiver
• Dist r ess, urgency, safety and routine calling
• Scanning of DSC frequencies for distress and general calls on MF/HF
• File edit ing capability for readiness in case of emergency
• PST N (Public Switched Telephone Network) c apab ility standard
• Log st ores 50 each of latest ordinary, distress and transmitted messages, in separate
memory blocks.
NBDP (with optional NBDP Terminal Unit IB-583)
• Aut om atic error-free telex communications and distress message in compliance with
GMDSS requirements
• LCD monitor and keyboard comply with ITU regulations
• Pop-up menus for user-friendly operation
• Memory for 256 operator-customized channels
• Real t im e message printing with Printer PP-510
Program Number
FS-1570/2570/5070
PC board Program No. Ver. No. Remarks
MAIN 0550225 01 Main program
PANEL 0550222 01 Program for the control display
DSP (DSC) 0550207 01 MODEM Program for DSC
NBDP 0550208 01 MODEM Program for NBDP
Terminal Unit IB-581 (opt ional unit, for FS-1570/2570 only)
PC Board Program No. Ver. No Remarks
TERMINAL 0550210 1.22
Terminal Unit IB-583 (optional unit)
Program Program No. Ver. No Remarks
TERMINAL 0550209 1.22
About the TFT LCD: The TFT LCD is constructed using the latest LCD techniques, and
displays99.99% of its pixels. The remaining 0.01%of the pixels may drop out or blink,
however this is not an indication of m alf unction.
xiii
SYSTEM CONFIGURATIONS
FS-1570
Standard configuration is shown with solid line.
DSC DISTRESS
SAFETY FREQUENCY
#
# = 2.6 m
whip
antenna
PREAMP UNIT
FAX-5
ANTENNA COUPLER
AT-1560-15
EPFS (GNSS)
INCOMING
INDICATOR
IC-303-DSC
MIF EQUIPMENT
DISTRESS ALERT UNIT
IC-302-DSC
BK INTERFACE
BK-300
CONTROLLER 1
TRANSCEIVER UNIT
FS-1570T
CONTROLLER 2
AC/DC POWER
SUPPLY UNIT
PR-300
LOUDSPEAKER
SEM-21Q
CONTROL
UNIT
FS-2571C
NBDP
TERMINAL UNIT
IB-583/IB-581
24VDC
CONTROL UNIT
FS-2571C
HANDSET
HS-2003
PRINTER
PP-510
INTERFACE
IF-8500*
* = Required for NBDP Terminal
and DSC to share printer.
HANDSET
HS-2003
POWER STATUS
MONITOR
PSM-01
24VDC
Preamp Unit
Antenna Coupler
Other Units
xiv
24VDC
Exposed to weather
Exposed to weather
Protected from weather
100-115/200-230VAC
φ
, 50/60Hz
1
FS-2570
Standard configuration is shown with solid line.
SYSTEM CONFIG U RATIONS
DSC DISTRESS
SAFETY FREQUENCY
#
# = 2.6 m
whip
antenna
DISTRESS ALERT UNIT
PREAMP UNIT
FAX-5
EPFS (GNSS)
INCOMING
INDICATOR
IC-303-DSC
MIF EQUIPMENT
IC-302-DSC
DSC ROUTINE
FREQUENCY
#
PREAMP UNIT
FAX-5
W/R BOARD
CONTROLLER 1
TRANSCEIVER UNIT
FS-2570T
ANTENNA COUPLER
AT-1560-25
TERMINAL UNIT
IB-583/IB-581
LOUDSPEAKER
SEM-21Q
CONTROL
UNIT
FS-2571C
NBDP
DC24V
HANDSET
HS-2003
PRINTER
PP-510
INTERFACE
IF-8500*
* = Required for NBDP Terminal
and DSC to share printer.
24VDC
BK INTERFACE
Unit
Preamp Unit
Antenna Coupler
Other Units
BK-300
Category
Exposed to weather
Exposed to weather
Protected from weather
CONTROLLER 2
AC/DC POWER
SUPPLY UNIT
PR-850A
24VDC
CONTROL UNIT
FS-2571C
100-115/200-230VAC
1
φ
, 50/60Hz
HANDSET
HS-2003
POWER STATUS
MONITOR
PSM-01
xv
SYSTEM CONFIG U RATIONS
FS-5070
Standard configuration is shown with solid line.
DSC DISTRESS
SAFETY FREQUENCY
DSC ROUTINE
FREQUENCY
# = 2.6 m
whip
antenna
PREAMP UNIT
EPFS (GNSS)
INCOMING
INDICATOR
IC-303-DSC
MIF EQUIPMENT
DISTRESS ALERT UNIT
IC-302-DSC
BK INTERFACE
BK-300
FAX-5
#
#
PREAMP UNIT
FAX-5
W/R BOARD
CONTROLLER 1
TRANSCEIVER UNIT
FS-5070T
CONTROLLER 2
ANTENNA COUPLER
AT-5000
CONTROL
FS-2571C
NBDP
TERMINAL UNIT
IB-583
24VDC
CONTROL UNIT
LOUDSPEAKER
SEM-21Q
UNIT
FS-2571C
HANDSET
HS-2003
PRINTER
PP-510
INTERFACE
IF-8500*
* = Required for NBDP Terminal
and DSC to share printer.
HANDSET
HS-2003
24VDC
Unit
Preamp Unit
Antenna Coupler
Other Units
Category
Exposed to weather
Exposed to weather
Protected from weather
24VDC
AC/DC POWER
SUPPLY UNIT
PR-850A
100-115/200-230VAC
1φ, 50/60Hz
POWER STATUS
MONITOR
PSM-01
xvi
1. OPERATIONAL OVERVIEW
1.1 Controls
Description of controls
Control Function
PWR/VOL knob
DISTRESS
button
CALL key Transmits DSC messages.
ENTER knob
CANCEL key
1/ RT/CH key
2/DSC key Composes DSC TX message.
3/TEST key Executes daily test and TX self-check.
4/IntCom key Turns on/off the intercom with other Control Unit FS-2571C.
5/ ACK/SQ key
6/SCAN key
• Turns the power on/off.
• Adjusts volume.
Press and hold down the button more than four (4) seconds to transmit
the distress alert.
Rotate to choose menu items; push to register selection.
• Cancels wrong data.
• Restores previous menu.
• Silences audio alarm.
• Cancels transmission, printing.
• Erases error message.
Switches to the radiotelephone (RT) screen. Press and hold down more
than five (5) seconds to set SSB: 2182.0 kHz/J3E.
DSC: Switches automatic and manual acknowledge alternately.
Radiotelephone: Turns squelch on and off.
• Displays DSC screen.
• Starts/stops scanning of DSC routine frequencies, on the DSC standby
screen.
1-1
1. OPERATIONAL OVERVIEW
7/ key
8/PRINT key Prints communications log files, current screen (except DSC standby
9/ key
*/FILE/CURSOR
key
0/LOG/TUNE key
#/SETUP key Opens the main menu.
ALARM lamp
OVEN lamp Lights (in green) when mains switchboard is on.
Turns loudspeaker on/off.
(Note that this key does not silence the distress or urgency alarm.)
screen and radiotelephone screen) and test results.
Adjusts panel dimmer and LCD contrast.
• Opens the send message file list from the DSC standby screen, to send
stored message.
• Shifts cursor.
• Long press: Tunes antenna in radiotelephone operation.
• Momentary press: Displays message logs.
• Flashes in red for distress and urgency messages.
• Flashes in green for safety and routine messages.
1.2 Turning the Power On/Off
Turn the PWR/VOL knob clockwise at the right-hand side of the control unit to power the
system. The RT screen appears.
Rotate the PWR/VOL knob counterclockwise to turn the system off.
In the dual control unit system, the control unit connected to the CONTROLLER 1 port on
the transceiver unit has priority and it controls the power for both the No.1 and No. 2 control
units. The power switch of the No. 2 control unit powers on/off the No. 2 cont rol unit only.
Note: Turn on power at switchboard more than five minutes before turning on this
equipment.
1.3 Radiotelephone (RT) Screen
Turn the power on, or press the 1/ RT/CH key to show the radiotelepho ne screen. This is
where you set up the transceiver unit, and communicate by voice or telex.
DR
UTC 00:00
EPFS 23:59
1-2
CH: 200
Tx: 2182.0 kHz
Rx: 2182.00 kHz
SSB SIMP HIGH FAST NB SQ
SEN
IA
MMSI xxxxxxxxx
POS 35 00.0000N
135 00.0000E
Radiotelephone (RT) screen
S
10.0A
1. OPERATIONAL OVERVIEW
Indication Meaning
CH Channel
Tx
TX frequency ( Tx: while transm itting)
Rx RX frequency
Blinks when there are messages not read yet.
DR/DS DR: Distress received, DS: Distress sent
Speaker on/off
SSB/TLX/AM Class of Emission
SIMP/SDUP/DUP Communication mode (SIMP: simplex, SDUP: semi-duplex,
DUP: full-duplex
HIGH/MID/LOW1/LOW2 Output power (LOW2: FS-5070 only, minimum output power)
FAST/SLOW/OFF
(AGC)
Auto gain control (FAST: high-speed, SLOW: low-speed, OFF: no
adjustment)
NB Noise blanker
SQ Squelch
SEN Receiving sensitivity
S S-meter, displays the strength of received signal.
IA/IC/VC/RF Transceiver unit status (IA: antenna current, IC: collector current, VC:
collector voltage, RF: PA output)
MMSI Own ship’s ID (nine digits)
POS Own ship’s position
EPFS/MAN Own ship’s position data source
EPFS: GPS navigator
MAN: manual (See section 6.6.)
1.4 DSC Standby Screen
The DSC standby screen may be displayed by pressing the 6/SCAN key. This screen scans
and receives the distress and routine frequencies, and sends the acknowledgement for the
received message automatically.
Acknowledge status
(AUTO ACK or MANUAL ACK)
Shown with nine digits.
WATCH KEEPING
DISTRESS WR1
2187.5
16804.5 12577.0
ROUTINE TRX
2177.0
16903.0 12657.0
35°00.0000N UTC 00:00
135°00.0000E MAN 23:59
Position and time. "EPFS" shown
when these are input automatically.
TRX: transceiver unit
WR2: The optional antenna for the routine frequency
4207.5
4219.5
AUTO ACK
MMSI xxxxxxxxx
6312.0
8414.5
6331.0
8436.5
DSC standby screen
Maximum six distress and routine
frequencies scanned in clockwise
direction, and frequency currently
being scanned is highlighted.
One cycle is completed in less than
two seconds.
1-3
1. OPERATIONAL OVERVIEW
1.5 Control Unit Dimmer, Contrast
You can adjust the dimmer and contrast of the control unit.
1. Press the 9/
key to show the dimmer/contrast adjustment window.
DIMMER (1~8)
CONTRAST (40~63)
EXIT:[CANCEL]
6
45
2. Rotate the ENTER knob to choose DIMMER or CONTRAST, whichever you want to
adjust, and then push the ENTER knob.
DIMMER (1-8)
Dimmer adjustment window Contrast adjustment window
6
CONTRAST (40-63)
55
3. Rotate the ENTER knob to adjust and then push the ENTER knob.
4. To quit, push t he CANCEL key.
1.6 Loudspeaker
The alarm beeps (other than distress communication) can be turned on or off.
1. Press the 7/
generated for routine messages. SPEAKER ON or SPEAKER OFF appears with each
press.
2. Rotate the PWR/VOL knob to adjust volume of loudspeaker (cw: volume up, ccw:
volume down).
key to alte rnately disable or enable the loudspeaker and the alarm
1.7 Setting Scan Frequencies
The DSC screen scans multiple routine frequencie s according to operator-set interval. For
how to set frequency to scan, see section 6.13.
Note that voice and telex communication are not available when scanning. (However, they
are available when the system is equipped with the optional watch receiver.)
1. Press the 6/SCAN key to show the DSC screen. Scanning starts.
2. Press the 6/SCAN key again when the desired frequency is chosen to stop the cursor.
You can scan only the frequency chosen by cursor.
3. Rotate the ENTER knob to move the cursor.
4. Press the 6/SCAN key to restart the scanning.
1-4
1. OPERATIONAL OVERVIEW
1.8 Setting for Auto A cknowledgement
Individual, position, polli ng and test calls can be acknowledged automatically or manually.
Press the 5/ACK/SQ key to switch the acknowledge mode between automatic and manual
alternately. The message AUTO ACK or MANUAL ACK appears on the DSC standby screen
with each press of the key.
Note: When own ship’s communication is high priority, set to MANUAL ACK.
The auto acknowledgement is not sent in the following cases:
• The category of a received message is DISTRESS, URGENCY or SAFETY.
• The communication mode is NBDP-FEC, NBDP-ARQ or DATA.
• Com Freq is NO INFO.
• ECC is NG (No Good).
• The handset is off hook.
1.9 System Characteristics
1.9.1 Equipment priority
Equipment priority order is as below.
1. Control unit sending distress alert
2. Control unit 1 – routine use
3. Control unit 2 – routine use
4. NBDP
1.9.2 Controls become inoperati ve
Controls become inoperative in the following conditions:
• When the other control unit goes OFF HOOK on RT mode in the two control units system.
• When the other control unit switches to the DSC mode in the two controls system.
• NBDP is scanning or communicating.
• Dist r ess alert or distress relay is transmitted.
• Call ot her than distress is transmitt ed (transmission time about 8 sec.) If it becomes
necessary to unlock the keyboard before the message is transmitted, press the CANCEL
key to cancel the call.
1.9.3 Controls become operative
Controls become operative in the following conditions:
• DISTRESS button is pressed.
• Cont r ol unit having higher pr iorit y is operated.
1-5
1. OPERATIONAL OVERVIEW
• T h e other control unit in two controls unit system goes ON HOOK.
• NBDP stops scanning or communicating.
1.9.4 Automatic setting of working frequency
The radiotelephone automatically sets working frequency in the following conditions:
• ABLE ACK is sent in response to individual call.
• Your ship receives ABLE ACK in response to own ship-initiated individual call.
• *Your ship receives ABLE ACK with COM. Frequency automatically changes in response to
own ship-initiated individual call.
• Your ship sends geographical area call.
• Your ship sends distress relay.
• Your ship sends distress alert.
• *Your ship receives group call.
• *Your ship receives geographic area call.
• *Your ship receives distress alert.
*: When receiving a call with different frequency from the setting, the following window
appears.
Change COM Frequency
Agree Disagree
Count down xx sec. Pause
After 10 seconds passed or when "Agree" is chosen,
the working frequency is changed with the message
shown below.
Accept New
Working Freq
CANCEL: CLOSE WINDOW
Choose "Pause".
Change COM Frequency
Agree Disagree
Count down has been paused.
Choose "Agree".
1.10 Intercom
The built-in intercom permits voice communications between two control units.
1. Off hook the handset at the radiotelephone scre en.
2. Press the IntCom key to show INTERCOM on the display. The called party’s control unit
rings.
3. When the called party picks up their handset, start communications.
4. Hang up the handset to turn the intercom off. The indication INTERCOM disappears
from the screen.
1-6
2. SSB RADIOTELEPHONE
You can use t he SSB communication in the RT (radiotelephone) mode. Press the RT/CH
key to show the RT screen.
2.1 Choosing Class of Emission
There are three emission modes, SSB, TLX and AM.
•SSB: Single Sideband
•TLX: Telex (see chapter 7 to 10.)
•AM: AM (You cannot transmit in the AM mode.)
At the radiotelephone screen, choose class of emission as follows:
1. Rotate the ENTER knob to highlight the emission mode (default: SSB) and then push the
ENTER knob. When rotating the ENTER knob clockwise, the cursor moves from “CH” to
downward.
CH: 200
Tx: 2182.0 kHz
Rx: 2182.00 kHz
Emission mode
2. Rotate the ENTER knob to choose mode desired and then push the ENTER knob.
AGC is automatically selected according to emission mode.
• SSB : AGC FAST
•TLX: AGC OFF
•AM: AGC SLOW
3.
However, you may change it as below.
4. Rotate the ENTER knob to choose AGC mode and then push the ENTER knob.
CH: 200
SSB SIMP HIGH FAST NB SQ
SSB
N
SE
N
SE
TLX
LA
LA
AM
MMSI xxxxxxxxx
POS
35 00.0000N
135 00.0000E
10.0A
S
UTC 00:00
EPFS 23:59
AGC mode
Tx: 2182.0 kHz
Rx: 2182.00 kHz
SSB SIMP HIGH FAST NB SQ
N
SE
IA
MMSI xxxxxxxxx
POS
35 00.0000N
135 00.0000E
10.0A
OFF
FAST
FAST
S
FAST
SLOW
FAST
UTC 00:00
EPFS 23:59
5. Rotate the ENTER knob to choose OFF, SLOW or FAST as appropriate and then push the
ENTER knob.
2-1
2. SSB RADIOTE LEPHONE
2.2 Choosing Channel, Frequency
Choose the channel or transmitting frequency to use for the SSB. This setting can be done
both when the handset is on and off hook.
Note: To set the SSB radiotelephone t o 2182 kHz/J3E, press the RT/CH key more than five
seconds.
Choosing channel
1. Rotate the ENTER knob to choose CH and then push the ENTER knob.
You can show the channel window by pushing also 1/CH key.
CH: 200
Tx: 2182.0 kHz
Rx: 2182.00 kHz
SSB SIMP HIGH FAST NB SQ
N
SE
IA
MMSI xxxxxxxxx
POS
35 00.0000N
135 00.0000E
200
10.0A
S
UTC 00:00
EPFS 23:59
2. Channel can be entered directly with the numeric keys, or by using the ENTER knob.
See below for details.
Entering band and band channel with the numeric keys: Use the numeric keys to
enter band and band channel and then push th e ENTER knob.
Choosing band and band channel with the ENTER knob:
After showing the window, use the FILE/CURSOR key to place the cursor in the band or
band channel position, whichever you want to change.
200
Cursor position for Cursor position for
selection of band channel
200
selection of band
3. Rotate the ENTER knob to set band (or channel) desired.
2 4 6 8 12 16 18 22 25 01 02----- 029
ITU band User band
Setting Range
ITU Band: 2/4/6/8/12/16/18/22/25
User Band: 001-029 (First zero is necessary)
ITU Channel: XX01 - XX236 (rendering on band or mode)
User Channel: XXX01 - XXX99
4. Push the ENTER knob. The Tx and Rx frequencies of the channel entered appear.
2-2
2. SSB RADIOTE LEPHONE
Choosing frequency
1. Rotate the ENTER knob to choose Tx or Rx as appropriate and then push the ENTER
knob.
CH: 200
Tx: 2182.0 kHz
2182.00
Rx: 2182.00 kHz
SSB SIMP HIGH FAST NB SQ
N
SE
IA
MMSI xxxxxxxxx
35 00.0000N
135 00.0000E
2. Enter frequency by one of the methods below.
Entering frequency with the numeric keys:
Use the numeric keys to enter frequency and t hen push the ENTER knob. For example,
to enter 2161 kHz, key in 2, 1, 6, 1, 0. (Keying in 2-1-6-1 will set 216.1 kHz.) Be sure to
include zero for 100 Hz place.
10.0A
S
UTC 00:00
EPFS 23:59
Choosing frequency with the ENTER knob (for RX only):
3. Use the FILE/CURSOR key to choose digit to change.
4. Rotate the ENTER knob to set digit.
5. Push the ENTER knob.
Note: When Tx and Rx frequencies are different, enter Tx and Rx in that order:
Tx: Tx/Rx frequencies
Rx: Rx frequency only
2.3 Transmitting
After selecting class of emission and frequency, you can transmit by pressing the PTT
switch. Tx is shown on the display.
2.3.1 Transmitting procedure
Maximum transmission power is achieved only when t he antenna impedance and
transmitter impedance match each other. Because the antenna im pedance changes with
frequency, antenna impedance matching with the transmitter impedance is done with the
antenna coupler. The antenna coupler automatically tunes the transmitter to a wide range of
different antenna lengths, from 7 to 18 (FS-1570/2570) or 10 to 18 (FS-5070) meters.
To initiate t he automatic tuning, do the following:
1. Press the PTT switch on the handset or the LOG/TUNE key more than one second on
the control unit. Tuning is automatically adjusted at first transmission after frequency is
changed. “TUNING” appears when the LOG/TUNE key is pressed more than one
second; “Tx” pops out when the PTT switch is pressed.
Tuning will be completed within 2 to 5 seconds for a newly selected frequenc y, or less
than 0.5 seconds for a once-tuned frequency. When the tuning process is successfully
2-3
2. SSB RADIOTE LEPHONE
completed, TUNE: OK appears. If tuning fails, TUNE: NG appears.
2. Hold the handset close to your mouth, press the PTT switch and speak clearly.
Note: W hen tuning is init iated in the two control units system, the display of the idle control
unit shows “OCCUPIED(ANOTHER CONTROLLER).” In this case, only the
DISTRESS button is operative on the idle control unit. Further, if a control unit is in
use when the other control is tuned, the di splay of the activated control unit shows
“OCCUPIED” plus the reason why cannot use: ANOTHER CONTROLLER or NBDP
to inform you that tuning is not operat ed.
2.3.2 Reducing transmitter power
To minimize possible interference to other stations, reduce the transmission po wer. This
should be done when using the transcei ver in a harbor, near the shore or close to
communication partner (other ship).
1. Rotate the ENTER knob to choose HIGH, MID, LOW (1) or LOW2 (shown on FS-5070)
in the equipment states area and then push the ENTER knob.
CH: 200
Tx: 2182.0 kHz
Rx: 2182.00 kHz
SSB SIMP HIGH FAST NB SQ
N
SE
IA
MMSI xxxxxxxxx
POS
35 00.0000N
135 00.0000E
(The above figure shows FS-5070.)
HIGH
MID
10.0A
LOW1
LOW2
S
UTC 00:00
EPFS 23:59
HIGH
MID
LOW1*
LOW2
FS-1570 FS-2570 FS-5070
150Wpep 250Wpep 500Wpep
100Wpep 125Wpep 350Wpep
68Wpep 90Wpep 200Wpep
110Wpep
*: For FS-1570/2570, "LOW"
(Power: ITU401CH)
2. Rotate the ENTER knob to choose a power as appropriate and then push the ENTER
knob.
Note: Power amplifier temperature is monitored, and when its temperature rises above a
certain temperature output power is autom at ically reduced. F or FS-5070, when the
over current is detected, output power is automaticall y reduced.
2.3.3 Conditi on of the transmi t ting unit
While transmitting, you may display RF (PA output), IA (antenna current), IC (collector
current) or VC (collector voltage), at the lower left-hand side of the radiotelephone screen.
1. Rotate the ENTER knob to choose RF, IA, IC or VC (whichever is displayed) in t he
equipment states area, and push the ENTER knob.
CH: 200
Tx: 2182.0 kHz
IA
Rx: 2182.00 kHz
IC
SSB SIMP HIGH FAST NB SQ
VC
N
SE
S
IA
RF
IA
MMSI xxxxxxxxx
POS
35 00.0000N
135 00.0000E
10.0A
S
UTC 00:00
EPFS 23:59
Equipment states area
2. Rotate the ENTER knob to choose option desired and then push t he ENTER knob.
2-4
2. SSB RADIOTE LEPHONE
Checking the transmitting power
During transmission, the IA bar deflects according to the current being fed to the antenna
feeder from the antenna coupler. The unit of readout is amperes. The antenna current
varies with the effective antenna impedance. The reading differs by the frequency and
antenna length. The output power is proportional to the square of an antenna current.
CH: 200
Tx: 2182.0 kHz
Rx: 2182.00 kHz
SSB SIMP HIGH FAST NB SQ
N
SE
IA
MMSI xxxxxxxxx
POS
35 00.0000N
135 00.0000E
2.1A
S
UTC 00:00
EPFS 23:59
Antenna Current
2.4 Receiving
Check if the emission mode and receiving frequency are set properly. If necessary, set them
again referring to section 2.1 and 2.2.
2.4.1 RF gain (sensitivity) adjustment
In normal use the sensitivity should be set for maximum. If the audio on the received
channel is unclear or interfered with other signals, adjust (usually reduce) sensitivity to
improve clarity.
1. Rotate the ENTER knob to choose SEN in the equipment states area and then push the
ENTER knob.
SEN
2. Rotate the ENTER to adjust and then push the ENTER knob.
2.4.2 S-meter
The S-meter shows relative signal strength coming into the receiver front end. Note that the
S-meter does not function when the AGC is turned off.
CH: 200
Tx: 2182.0 kHz
Rx: 2182.00 kHz
Equipment states area
2-5
SSB SIMP HIGH FAST NB SQ
N
SE
IA
MMSI xxxxxxxxx
POS
35 00.0000N
135 00.0000E
10.0A
S
UTC 00:00
EPFS 23:59
S-meter
2. SSB RADIOTE LEPHONE
2.4.3 Receiving AM broadcasting stations
1. Press the RT key to show the radiotelephone screen.
2. Rotate the ENTER knob to choose emission mode and then push the ENTER knob.
CH: 200
Tx: 2182.0 kHz
Rx: 2182.00 kHz
Emission mode
3. Rotate the ENTER knob to choose AM and then push the ENTER knob.
4. Rotate the ENTER knob to choose Rx and then push the ENTER knob.
CH: 200
SSB SIMP HIGH FAST NB SQ
SSB
N
SE
N
SE
TLX
LA
LA
AM
MMSI xxxxxxxxx
35 00.0000N
135 00.0000E
10.0A
S
UTC 00:00
EPFS 23:59
AGC mode
Tx: 2182.0 kHz
2182.00
Rx: 2182.00 kHz
SSB SIMP HIGH FAST NB SQ
N
SE
IA
MMSI xxxxxxxxx
POS
35 00.0000N
135 00.0000E
10.0A
S
UTC 00:00
EPFS 23:59
5. Key in RX frequency with the numeric keys and then push t he ENTER knob.
2.4.4 Squelch function
Squelch on/off
The squelch mutes the audio output in the absence of an incoming signal. Press the
ACK/SQ key to turn on and off the squelch alternately. When radio noise is too j arring
during stand-by condition, it may be mut ed by activating the squelch. “SQ” in the equipment
states area is hatched when the squelch function is active.
Squelch frequency
To adjust t he squelch frequency, see section 6.3.
2.4.5 Noise blanker
The noise blanker functions to remove pulse noise. To turn it on or off, see section 6.2.
2-6
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