Channel Master CM-5020 Spécifications Page 26
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20
Detail
4.7.3 Verification of a DSC call before transmission
The final step in each DSC call sequence is the verification window, in which it is possible to
verify the call that is about to be transmitted. By default only information that may be
influenced in the call setup will be displayed. Example:
Transmit Station Call
MMSI: 001234567
OK/send
<Menu/back
What is not indicated to the user is the fact that calls are
formed
according to the specifications ITU R.493-11.
For example in a call (an individual station call request)
the following information is not shown to the user:
•1
st
tele-command: F3E/G3E Simplex TP
• EOS: Acknowledgement request (RQ = 117)
For all radiotelephony calls transmitted to all ships or to a group of ships:
• EOS: End Of Call (127)
Transmitted acknowledgement calls are not shown in any verification window before
transmission. The acknowledgement of any received individual call request will be according
to ITU R.493-11. The manipulation of the received call will be:
• Self-ID in the received call is used as address in the transmitted call
• Address in the received call is used as self-ID in the transmitted call
• EOS: Acknowledgement (BQ = 122)
•1
st
tele-command might be changed to “Unable to Comply” (104) on operator’s
request, stating the selected reason.
For all received or transmitted calls the full information can be retrieved from the DSC log.
4.7.4 Receiving DSC calls with errors
Distress calls are regarded of such importance that even if they are received with errors they
will, as far as possible, be received and displayed on the screen. If a call is received with
errors this will be indicated with a “receive error” (REC ERR) marking next to the heading of
the call. In this case the full integrity of the data is not to be trusted, and the handling
possibilities (e.g. relaying the call with direct use of the received data) are limited by the
equipment.
4.7.5 Priority of DSC versus VHF
If a situation occurs where there is a conflict between the VHF and the DSC functionality (for
instance voice transmission on a working channel – using PTT, simultaneously with trans-
mission of a DSC call), the DSC transmission will be prioritized. As a consequence the
following VHF functions may need to be re-initiated if the DSC activity has occurred while
these were active:
• Replay
• Scanning
• Dual watch
• PTT
A normal received DSC call request will appear on the screen as soon it is recognized on
channel 70. This will not affect VHF radiotelephony before OK is pressed, unless automatic
channel shift has been configured (See chapter: Automatic channel shift:)
0605
- SAILOR RT5022 VHF DSC 1
- SAILOR RT5020 VHF DSC Duplex 1
- Introduction 3
- Training Information 4
- Quick DSC distress call 5
- (only for emergency use) 5
- Mayday procedure 5
- Your VHF at a glance 6
- (RT5020/RT5022) 6
- Contents 7
- 1.1 Powering VHF 9
- 1.5 Speaker volume 10
- 1.6 Earpiece volume 10
- 1.7 Squelch 10
- Activating replay 11
- 1.11 Dimming 12
- 1.12 Contrast 12
- 2 Basic DSC operations 13
- 2.3 Transmitting DSC Calls 14
- 2.4 Call a ship station 14
- 2.5 Call a shore station 14
- 2.7 Call a group of ships 14
- 2.8 Create emergency calls 15
- 2.9 DSC call log 15
- 3 Your VHF in detail 16
- 3.4 Setting channel mode 17
- 3.5 Private channels 17
- 3.6 Duplex channels 17
- 3.8 Transmitter power 18
- 3.9 Channel scanning 19
- 3.10 Creating scan tables 19
- 4 DSC operations in detail 20
- 4.2 Group MMSI number 21
- 4.4 Working channel 22
- 4.5 Contact list 22
- 4.5.2 Show contact 23
- 4.5.3 Adding a new contact 23
- 4.6.1 Special calls 24
- 4.6.3 Automatic channel shift 25
- 4.7.1 DSC transmission 25
- Transmit Station Call 26
- MMSI: 001234567 26
- <Menu/back 26
- 4.8.1 Idle display 27
- 4.8.3 Language 27
- 4.8.4 Privacy talk mode 28
- 4.10 Automatic conditions 29
- 4.11.1 Radio software release 30
- 5 Errors and warnings 31
- Fuse 15A ATO 32
- 5.2.2 Self-test 32
- 5.2.3 GPS 33
- 5.2.4 Accessory connection 33
- 5.2.5 DSC routine testing 33
- 5.2.6 Missing MMSI 34
- 5.2.7 Radio time 34
- 5.2.8 Channel not free 34
- 5.2.9 Device failure 34
- 6 Menu tree 35
- 7 Optional functional devices 37
- 7.1.2 Operation 38
- 7.1.3 ON/OFF 38
- 7.1.4 Channel selection 38
- 7.1.5 Volume 38
- 7.1.6 Squelch 39
- 7.1.7 Dimming 39
- 7.1.8 Receiving a DSC call 39
- 7.1.9 Muting alarms 40
- 7.1.10 Transmitter power 40
- 7.1.11 Replay 40
- 7.2.1 Distress initiation 41
- 7.3 Printer 42
- 8.1 International channels 43
- 8.2 US channels 44
- 8.3 BI channels 45
- 8.4 CA channels 46
- VHF with mounting bracket 47
- Mounting option Drilling plan 48
- Drilling plan 48
- Handset for transceiver 49
- Installation 50
- 9.2 Compass safe distance 53
- Connection box board 639121 55
- Extension board 639123 55
- Cable connection diagram 57
- Interfaces 58
- Sparc II Connections 58
- 9.5.1 Antennas 61
- 9.5.2 RX/TX antenna 61
- 9.5.3 DSC antenna 62
- 10 Technical specifications 63
- Thrane & Thrane A/S 68
- [email protected] 68
- www.thrane.com 68
- B5022GB0 Issue: L /09 02 68
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