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REAR PANEL

39

REAR PANEL CONNECTIONS

POWER CONNECTOR

:

Connect to a power supply that delivers 12 or 24 volts DC and is capable of 6 or
3 Amps respectively current.

RF CONNECTORS

:

Two UHF female connectors are used for interconnecting the necessary 50 ohm
coax cables to the antenna systems.  Coax type should be RG-58C/U, RG-213/U
or equivalent using a PL-259 UHF plug.  The connector labeled ANTENNA 50
OHMS is for normal radio operations and DSC transmissions.  The second
connector is for the dedicated channel 70 receiver.

PRINTER - P1

:

Interconnect for connecting an optional parallel printer is provided for printing
received messages and display screens.  Pressing the SQL key will send the
screen information to the printer.

NMEA 0183 - P2

:

The P2 connector allows NMEA 0183 navigational input from a GPS or Loran
receiver using pins 1 and 2.  The input NMEA 0183 signal is buffered and
output on pins 3 and 4 for driving additional equipment.

ACCESSORY - P3

:

Use for interconnecting additional equipment requiring accesses to the radio
transmit, receive and alarm circuitry.

GND

-

(Pins 1 and 8)  Provides access to the negative side (ground) of the

primary supply.

MIC

-

(Pin 2)  Auxiliary input for a dynamic microphone.

PTT

-

(Pin 3)  Applying a ground potential to this connection activates the

transmitter.

HS AUDIO

- (Pin 4)  Handset receiver audio.  600 ohms.

INT SPKR

- (Pin 5)  Internal speaker input.  A jumper to the AF OUT terminal

is required to operate the internal speaker.

AF OUT

-

(Pin 6)  AC coupled output of the audio power amplifier.  Speaker

impedance required is 3.2 ohms or greater.  Connect to INT SPKR for audio.

MUTE

- (Pin 7)  Supplying a ground to this pin will mute the receiver.  During

transmit, this connection will supply a ground for muting another receiver.

ALRM RQ IN

- (Pin 9)  Input signal for requesting a Distress signal from a

remote alarm station.  Grounding this line will initiate a Distress call.

ALRM ACK OUT

- (Pin 10)  This output terminal provides an Alarm

Acknowledgment signal when used with a remote alarm station.

Summary of Contents for 7157

Page 1: ...SEA 7157 OPERATOR S MANUAL 25W VHF DSC RADIOTELEPHONE Software Version Ver 1 10 11 Feb 1999 ...

Page 2: ......

Page 3: ...Backlighting 9 Receiver Sensitivity 9 Changing The Priority Channel 9 Assigning MEM Channels For Scanning 10 Dual Watch Scan 10 Search Scan 11 Memory Scan 11 Scan Options 12 Reviewing Memory Channels 12 Adjusting The Scan Hang Time 13 Clearing The Radio Memory 13 Changing The Beep 13 Naming A Channel 14 Checking The Software Version 14 DSC OPERATIONS 15 DSC Distress Calling 15 Selecting The DSC Me...

Page 4: ...g The Date Time 29 Programming The DSC ID MMSI 30 Programming The Navigation Interface 30 Programming Options 31 Using Test And Diagnostic Utilities 32 Programming The DSC Directory 32 Programming The Telephone Directory 33 Inputting Position Data 34 FREQUENCY LISTINGS 35 USA Channel List 35 Amended International List 36 International Channel List 37 Weather Channel List 38 REAR PANEL 39 Rear Pane...

Page 5: ......

Page 6: ...ssion 16K0G3E 13K5G2B Primary Voltage 12 or 24 VDC 30 10 Floating Chassis Current Drain 12 Volts Receive Standby 0 5 Amp Receive Full Audio 1 0 Amps Max TX 25W 4 5 Amps 1W 1 0 Amp 24 Volts Receive Standby 0 3 Amp Receive Full Audio 0 5 Amps Max TX 25W 2 35 Amps 1W 0 80 Amp Output Impedance 50 ohms Transmitter Output Power 25W 1W Frequency Deviation 5 KHz maximum peak Receiver Sensitivity 0 3 µV fo...

Page 7: ...A 10 ground stud is provided for connecting the radio chassis to the ship s earth connection with a copper strap The SEA 7157 is equipped with two UHF type RF connectors for the installation of two independent antennas One antenna allows constant monitoring of the DSC channel while the other antenna labeled ANTENNA 50 OHMS is used for normal radio operations The nominal impedance of each antenna i...

Page 8: ...between priority channel and CH 16 Allows entry of channel selection alphanumeric channel information and menu selections Initiates an Emergency DSC call Selects DSC operations Toggles between radio menu selections and normal operations Aborts DSC operations Allows quick access to squelch settings for normal operations Selects print feature in other modes Selects US INT or WX channel list Also ser...

Page 9: ...ve on the selected channel For instructions on using additional radio functions see the table of contents for the page number corresponding to the specific function Illustrations in this manual may differ from your own depending on enabled programming features selected channel list and differences in display fonts ENT SQL ENT 6 M N O 2 A B C C SEA Inc 1999 A UNIT OF DATAMARINE Ver 1 10 11 FEB 1999...

Page 10: ...el settings unique to the United States When selected the last used US channel will be recalled Pressing the key while in the US list will cycle the radio to the INT International channel list The last used INT channel will be recalled Pressing the key while in the INT list will cycle the radio to the last WX Weather channel used from the WX channel list Ten receive only weather channels are avail...

Page 11: ...the key followed by the key until noise is heard through the speaker Increase the number of squelch bars on the display by pressing the key until the noise stops This is the ideal setting for the squelch threshold Pressing either the or key will stop squelch adjustment In the event that noise occasionally opens the squelch increase the number of squelch bars on the display by one or two Adjusting ...

Page 12: ...aring on the display Speak in a normal voice with your lips about one eighth of an inch away from the microphone Do not shout Shouting reduces intelligibility If regulations prohibit 25 watts of power on a given channel the power level cannot be changed No power level selection is allowed on receive only channels e g WX channels US channels 13 67 and 77 can be operated at full power by pressing th...

Page 13: ...ls e g WX channels USA channels 13 67 and 77 may be operated at full power by pressing the key during transmission Releasing the key will return the radio to 1 watt operation When communicating short distances it is recommended that the 1 watt level be used to help prevent interference with other stations 1 SP RADIO RADIO RADIO 4 G H I 2 47 47 47N 122 19W 16 DX 25W US PRI 1 PREV 4 RVW 7 BEEP 2 SRM...

Page 14: ... will reduce the amount of interference caused from pagers and other communications systems To select the receiver sensitivity press CHANGING THE PRIORITY CHANNEL When it is necessary to Dual Scan Watch a given frequency and the priority channel it may be necessary to program the priority channel to something other than channel 16 To change the priority channel select the channel that will become ...

Page 15: ...selected and priority channel press Receiver monitors selected channel i e 13 and samples priority channel usually 16 The PRI annunciator will flash at the dual watch scan interval Priority channel traffic will override selected channel traffic If the press to talk button on the microphone is pushed scan is aborted and the radio transmits on the non priority channel Pressing any key will stop dual...

Page 16: ... resumes when the channel becomes inactive see SCMD in SCAN OPTIONS Press the key to momentarily skip an active channel and continue search Press the key to lockout an active channel during the scan session Exiting the SCAN mode cancels lockouts Entering a channel will exit SCAN If the microphone PTT is pressed the search function aborts and the radio transmits on the displayed channel When the pr...

Page 17: ... available depending on code version and regulations REVIEWING MEMORY CHANNELS Memory channels may be reviewed to see which channels have been assigned as MEM channels Press to enter the memory channel review mode Pressing the key will step to the next memory channel Pressing the key will exit the review mode Memory channels may not be available depending on code version and regulations 1 SP RADIO...

Page 18: ... press All settings assigned to the radio functions will be reset to the default factory settings CHANGING THE BEEP An audible tone will be heard whenever a key is pressed The key beep can be turned on or off by pressing the key followed by the key Press to toggle the beep control setting 1 SP 2 53 47 47N 122 19W 13 DX 1W US FEATURE NOT AVAILABLE ENT TO CONTINUE RADIO RADIO 5 J K L 7 P R S 2 53 47...

Page 19: ...played by pressing the key followed by and The version number release date serial number and checksum will be shown on the first screen This information can be helpful in determining what options are available in the radio If the key is pressed within 1 minute the second screen will show the DSC ID and Group DSC ID currently programmed Pressing the key or waiting 1 minute will return the radio to ...

Page 20: ...ncy on DSC channel 70 The radio will wait for an acknowledgment from the coast station and automatically resend the DSC emergency approximately every 4 minutes if a coast station does not respond You may press the key to resend the emergency again or press the key to exit the DSC emergency 2 55 47 47N 122 19W 1 NONE 3 FLOOD 5 GROUND 7 SINKING 1 US EXAMP A UP MORE 2 FIRE 4 COLLIDE 6 LISTING DISTRES...

Page 21: ... formats allow all call types to be generated including geographic area calls group calls nonvoice fax and data calls position requests and polls The key can be used to abort the DSC call at any point in the process and return to the main radio display 3 D E F DSC RADIO 2 56 47 47N 122 19W 1 REVIEW 3 DSC 5 RELAY 7 PHONE 1 US EXAMP A 8 CLASS A 2 PROGRAM 4 ALT CHAN 6 ALL SHIP Primary DSC menu select...

Page 22: ...SC call press When prompted to ENTER DSC CALLING CHANNEL select a channel using the and arrow keys and or the numeric keys The key may be used to choose from the US or INT channel list Select the station you wish to call from one of seven stored lists or enter the number directly when prompted If you are calling the same station shown on the screen simply press 0 Q Z 2 A B C 4 G H I 2 57 47 47N 12...

Page 23: ...ce communications to relay the distress ALL SHIPS DSC CALLS To call all ships within radio range use an all ships call Most frequently this is used by coast stations to initiate navigational warnings weather reports and similar matters of interest to all mariners To transmit an all ships DSC call press Select a priority category at the prompt Routine indicates normal priority Safety indicates impo...

Page 24: ... key stops the alarm The information displayed will depend on the nature of the received call If the MMSI number is not recognized from the list of programmed DSC ID s the MMSI number will be displayed rather than the name The radio will automatically change to the requested channel for further communications ENT 3 00 47 47N 122 19W 1 REVIEW 3 DSC 5 RELAY 7 PHONE 1 US EXAMP A 8 CLASS A 2 PROGRAM 4...

Page 25: ...ne 5 ERRORS Status ACK NOACK Line 6 TC1 telecommand 1 Line 7 TC2 telecommand 2 Each line of a DISTRESS CALL RELAY or ACK has Line 1 Message number and Distress Call ACK Relay Line 2 MMSI number of ship in distress Line 3 UTC Time of position fix Date when received Line 4 Position Line 5 Nature of Distress Line 6 ACK BY PHONE CHAN 16 Format By MMSI ID Line 7 Errors Com chan 16 Pressing the key will...

Page 26: ...imple version message format GEOAREA and GROUP do not have predefined message formats Depending on which DSC format was selected the operator may be prompted for additional information before the priority category prompt appears The format type of Distress not a priority category of distress has a specific structure and will prompt for the nature of the distress rather than a priority category The...

Page 27: ...format types to retrieve a stations position END CALL Phone Call formats only Telecommand 2 TC2 gives details to clarify the TC1 selection The available TC2 options when the selected TC1 option started with F or NO INFO are NEUTRAL A non warring vessel or neutral party MEDICAL A medical transport vessel NO INFO No additional information needed for response The CANT DO TC1 selection has 10 TC2 opti...

Page 28: ...o other information If an individual address has been specified the operator must indicate if an ACK is required from the receiving station If Distress Acknowledgment or Distress Relay has been selected you will be prompted to enter the DSC ID of the ship in distress as well as the position and nature of the distress 3 01 47 47N 122 19W 1 FAX DAT 3 V 22 5 V 23 7 V 26TER 1 US EXAMP A UP MORE 2 V 21...

Page 29: ...default DSC channel and transmit the call 3 02 47 47N 122 19W 1 DSTRESS 3 GEOAREA 5 GROUP 1 US EXAMP A 2 ALLSHIPS 4 INDIVIDL 6 PHONE 8 Class A call screen 3 02 47 47N 122 19W 1 REVIEW 3 DSC 5 RELAY 7 PHONE 1 US EXAMP A 8 CLASS A 2 PROGRAM 4 ALT CHAN 6 ALL SHIP Primary DSC menu selections 3 02 47 47N 122 19W 1 NONE 3 FLOOD 5 GROUND 7 SINKING 1 US EXAMP A UP MORE 2 FIRE 4 COLLIDE 6 LISTING Nature of...

Page 30: ...elections will prompt for the DSC ID of the ship in distress as well as position and nature of distress Transmit the call by pressing the key DSC 2 A B C 8 T U V DSC 3 03 47 47N 122 19W 1 ROUTINE 3 SAFETY 5 DISTRESS 1 US EXAMP A 2 SHIP BUS 4 URGENCY All ships priority category 3 03 47 47N 122 19W 1 NEUTRAL 3 NO INFO 1 US EXAMP A 2 MEDICAL Details for communications response TC2 3 03 47 47N 122 19W...

Page 31: ...on is selected the operator is prompted to include the position with the call switch to another working channel after the call is transmitted or no other information Top left reference corner for Geoarea call 3 03 47 47N 122 19W Select QUADRANT OF AREA S NW CORNER 0 NE 2 SE 1 US EXAMP A 1 NW 3 SW Lower right corner for Geoarea call 3 03 47 47N 122 19W NW CORNER 47 N 122 W 48 LAT BY DELTA LNG 0 99 ...

Page 32: ...s selected the operator is prompted to include the position with the call switch to another working channel after the call is transmitted or no other information The operator must indicate if an ACK is required from the receiving station 0 Q Z ENT Individual or group MMSI number to call 3 05 47 47N 122 19W LAST STATION CALLED CALL SAME STATION 1 YES 2 NO 1 1 US EXAMP A 123456789 3 05 47 47N 122 19...

Page 33: ...econdary telecommand prompt TC2 gives details to clarify the TC1 selection After the TC2 option is selected the operator is prompted to request an acknowledgment from or send an acknowledgment to the receiving station Pressing the key will transmit the message to the coast station 0 Q Z ENT 2 A B C 3 06 47 47N 122 19W PRESS DSC TO XMT 1 US EXAMP A Transmitting the DSC call 3 06 47 47N 122 19W 1 RE...

Page 34: ...needed press Prompts will appear for the year month day hours and minutes Use the number keys or the and keys to change the default value Press the key to accept the displayed value After the correct date and time has been entered the operator is prompted to press the key to start the clock with the new settings or to abort and use the previous values 0 Q Z ENT 3 06 47 47N 122 19W 1 REVIEW 3 DSC 5...

Page 35: ...er and confirm the new number is correct PROGRAMMING THE NAVIGATION INTERFACE To program the navigation interface press Answer if external NMEA 0183 is present If no external data is available press or to use the current setting The sentence formats recognized by the radio for navigational input are NMEA 0183 Version 2 00 RMC minimum GPS TRANSIT specific data GGA GPS fix GLL position independent o...

Page 36: ...nnel that will be used when transmitting routine DSC calls To program the default DSC channel press Enter the new default channel by using the numeric keys or the and keys then The key may be used to change the channel list LIST BKSP ENT 1 Unit Setup menu 3 03 47 47N 122 19W 1 TIME 3 NAVIGATION 4 OPTIONS 5 UTILITIES 1 US EXAMP A 2 DSC ID 2 A B C 1 SP DSC 4 G H I 1 SP 3 04 47 47N 122 19W 1 SET ALAR...

Page 37: ...ters while the alphanumeric characters are selected by using the and keys to cycle through each character on the key If the key is not the first key pressed when an existing name is displayed the entire name will be erased Press the key to complete the name entry Enter the 9 digit MMSI ID number associated with the descriptive boat name just entered and press 3 05 47 47N 122 19W 1 REVIEW 3 DSC 5 R...

Page 38: ...haracters are selected by using the and keys to cycle through each character on the key If the key is not the first key pressed when an existing name is displayed the entire name will be erased Press the key to complete the name entry Enter the 14 digit telephone number associated with the descriptive name just entered and press 3 05 47 47N 122 19W 1 REVIEW 3 DSC 5 RELAY 7 PHONE 1 US EXAMP A 8 CLA...

Page 39: ...operator is prompted for the global quadrant for the following Latitude and Longitude position Select the quadrant When prompted for the degrees and minutes of the latitude and longitude use the numeric or and keys to change the value After the correct value is displayed press The key may be used to backspace over the digit just entered for corrections LIST BKSP 2 Program 3 05 47 47N 122 19W 1 UNI...

Page 40: ...6 700 VTS Port Ops 15 S 156 750 RX only Coast to Ship Environmental 16 S 156 800 DISTRESS AND CALLING 17 S 156 850 Maritime Control 18A S 156 900 Commercial 19A S 156 950 Commercial 20 D 157 000 Port Ops 20A S 157 000 Port Ops Intership 21A S 157 050 U S Govt ONLY USCG 22A S 157 100 U S Coast Guard 23 D 157 150 Public Correspondence 23A S 157 150 U S Govt ONLY 24 D 157 200 Public Correspondence 25...

Page 41: ...6 975 Commercial 80A S 157 025 Commercial 81A S 157 075 U S Govt ONLY 82A S 157 125 U S Govt ONLY 83A S 157 175 U S Govt ONLY 84 D 157 225 Public Correspondence 85 D 157 275 Public Correspondence 86 D 157 325 Public Correspondence 87 D 157 375 Public Correspondence 88 D 157 425 Public Correspondence 88A S 157 425 Commercial Intership Transmissions subject to FCC rules Duplex receive frequency ship...

Page 42: ...0 14 S 156 700 15 S 156 750 16 S 156 800 Distress and Calling 17 S 156 850 18 D 156 900 19 D 156 950 20 D 157 000 21 D 157 050 22 D 157 100 23 D 157 150 Public Correspondence 24 D 157 200 Public Correspondence 25 D 157 250 Public Correspondence 26 D 157 300 Public Correspondence 27 D 157 350 Public Correspondence 28 D 157 400 Public Correspondence 60 D 156 025 Canada Public Correspondence 61 D 156...

Page 43: ...pondence 85 D 157 275 Public Correspondence 86 D 157 325 Public Correspondence 87 D 157 375 Public Correspondence 88 D 157 425 Public Correspondence Duplex receive frequency ship transmit frequency 4 6 MHz WEATHER CHANNEL LIST CHANNEL NUMBER FREQUENCY CHANNEL DESIGNATION 01 162 550 US Primary 1 02 162 400 US Primary 2 03 162 475 US Primary 3 04 163 275 05 161 650 Canada Channel 21B 06 161 775 Cana...

Page 44: ... and 4 for driving additional equipment ACCESSORY P3 Use for interconnecting additional equipment requiring accesses to the radio transmit receive and alarm circuitry GND Pins 1 and 8 Provides access to the negative side ground of the primary supply MIC Pin 2 Auxiliary input for a dynamic microphone PTT Pin 3 Applying a ground potential to this connection activates the transmitter HS AUDIO Pin 4 H...

Page 45: ... Serial data TRANSMITTER pin for RS232 port Pin 4 No Connection Pin 5 RS232 port ground pin Pin 6 DSR Data Set Ready Pin 7 RTS Request To Send Pin 8 CTS Clear To Send Pin 9 No Connection GROUND LUG Chassis ground earth connection The chassis should be connected to the ship s earth connection for safety purposes This connection will also help reduce RF interference problems both from the SEA 7157 a...

Page 46: ...TeleType F3E Emission designation for Frequency modulation using a single channel of analog information to modulate the carrier 3 with telephony type information E This may be followed with SPX for simplex channel or DPX for duplex FAX FAcsimile Xmission FCC Federal Communications Commission FM Frequency Modulation of the carrier signal FSK Frequency Shift Keying is a method of modulating the carr...

Page 47: ...en no signal is present TTY TeleTYpewriter TX Shorthand for Transmit UHF Ultra High Frequency USCG United States Coast Guard UTC Universal Coordinated Time is located at the prime meridian µV micro µ Volt is 1 millionth of 1 volt V xx ITU standards defining how signals are generated and protocols used VHF Very High Frequency VSWR Voltage Standing Wave Ratio is a measurement figure that helps deter...

Page 48: ......

Page 49: ...7030 220 th St S W Mountlake Terrace Washington 98043 USA 425 771 2182 FAX 425 771 2650 http www sea dmi com OPR 7157 2 99 Rev 1 10 ...

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