MARITEC - AUTOMATIC IDENTIFICATION SYSTEM (AIS)
PMG1 - Programmable Modulation Generator
The Programmable Modulation Waveform Generator Model PMG1 creates all the required modulation waveforms as set out in IEC61993-2 (AIS Class A) and IEC 62287 (AIS Class B). It can perform the encoder requirement as set out in IEC61993-2 10.6. The PMG1 is a conveniently sized add on for any good quality signal generator with FM modulation allowing baseband input.
Features:
| Designation | Base-band packet generation for Class A, Class B and derivative equipment of the Universal Automatic Identification system (AIS). Designed according to ITU.R M.1371-1, IEC61993-2, and IEC 62287-1. | |
| Services | Base-band message in accordance with ITU.R M.1371-1 DSC in accordance with ITU-R M.825-3 Bit patterns in accordance with IEC 61993-2 PRS Bit patterns in accordance with IEC 62287 Class B Encoding of the following test signals: |
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| Channel A Test Signal Number 1 A DSC call with an individual station address and with command sets 103 (report your position) and 111 (report ship name) unless otherwise stated (refer to, IEC 61993-2, ITU-R M.825). |
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| Channel A Test Signal Number 2 A slotted binary MSG 8 packet with a payload of 010101 prior to NRZI encoding. |
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| Channel A Test Signal Number 3 A slotted binary MS 8 packet with a payload consisting of 00110011 prior to NRZI encoding. |
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| Channel A Test Signal Number 4 A slotted MSG 8 packet with a payload consisting of an infinite series of Pseudo Random Sequence (PRS) as specified in ITU/T 0.153. This sequence is then NRZI encoded. |
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| Channel A Test Signal Number 5 Standard alternating binary Msg 8 packets with payload of 01010101 and 00110011 respectively encoded every 5th slot |
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| Channel A Manual Test Signals Single RATDMA VDL message using profile data The following message types are supported: Msgs 1,2,3,4,5,9,11,18,19,21,DSC with VDO String Generation |
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| Channel A On Line Binary Signals Generation of Binary RATDMA VDL message using ABM and BBM interface strings. |
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| Channel B. Interferer Infinite stream of 01010101 bits with no NRZI encoding |
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| Channel B. Interferer Infinite stream of 00110011 bits with no NRZI encoding |
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| Extended Services | AIS Developer Studio (ADS) Interface | |
| RS232 system interface | Duplex port (VDO) + (remote control) + programming port | |
| RS232 GPS interface | Multiple Input 1 - Simplex 4800-baud +-5V -> +-12V 2 - 1PPS Buffered input 5V HCMOS 3 - Buffered AUX input 5V HCMOS - NOT USED |
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| Power Supply | Battery Eliminator 12 - 16Vdc Max (13.8vdc nominal) | |
| Power consumption | 1000mA max | |
| Temperature range | +15 to +35 deg C. | |
| EMC | As per TCF | |
| ITEM 1 | SETTING | SET GMSK BT 0.5 SET GMSK BT 0.4 SET GMSK BT 0.3 SET DSC PRE-EMPHASIS SET DSC NO PRE-EMPHASIS |
| ITEM 2 | Multiple DSC | Test Signal Number 1 |
| ITEM 3 | Multiple Msg 8 TDMA | Test Signal Number 2 |
| ITEM 4 | Multiple Msg 8 TDMA | Test Signal Number 3 |
| ITEM 5 | Multiple Msg 8 TDMA | Test Signal Number 4 |
| ITEM 6 | Multiple Msg 8 TDMA | Test Signal Number 5 |
| ITEM 7 | Manual Single Entry | MANUAL VDL MSG TYPE 1 +VDO MANUAL VDL MSG TYPE 2 +VDO MANUAL VDL MSG TYPE 3 +VDO MANUAL VDL MSG TYPE 4 +VDO MANUAL VDL MSG TYPE 5 +VDO MANUAL VDL MSG TYPE 9 +VDO MANUAL VDL MSG TYPE 11 +VDO MANUAL VDL MSG TYPE 18 A +VDO MANUAL VDL MSG TYPE 18 B +VDO MANUAL VDL MSG TYPE 19 +VDO MANUAL VDL MSG TYPE 21 +VDO MANUAL VDL MSG TYPE 24A +VDO MANUAL VDL MSG TYPE 24B +VDO MANUAL DSC Position & Name |
| ITEM 8 | System | DISPLAY GPS GPGGA STRING |
| ITEM 9 | System | SERIAL NUMBER 010101-xxxx SW Version |
AIS Developer Studio Services: VDL messages in accordance with DSC in accordance with ITU-R M.825-3 Bit patterns in accordance with IEC 61993-2 PRS Bit patterns in accordance with
Base-band packet creation |
Single Transmission Message Number 1 Single Transmission Message Number 2 Single Transmission Message Number 3 Single Transmission Message Number 4 Single Transmission Message Number 5 Single Transmission Message Number 6 Single Transmission Message Number 7 Single Transmission Message Number 8 Single Transmission Message Number 9 Single Transmission Message Number 10 Single Transmission Message Number 11 Single Transmission Message Number 12 Single Transmission Message Number 13 Single Transmission Message Number 14 Single Transmission Message Number 15 Single Transmission Message Number 16 Single Transmission Message Number 18(A) Single Transmission Message Number 18(B) Single Transmission Message Number 19 Single Transmission Message Number 20 Single Transmission Message Number 21 Single Transmission Message Number 22 Single Transmission Message Number 23 Single Transmission Message Number 24(A) Single Transmission Message Number 24(B) Single Transmission DSC Std Test Signal 1 |
| Mobility Generator | Multiple Way Point Generator |
| Load Generator | Multiple Virtual Target Generator |
| IEC Test Signals | Test Signal Number 2 A DSC call with an individual station address and with command sets 103 (report your position) and 111 (report ship name) unless otherwise stated (refer to, IEC 61993-2, ITU-R M.825) |
| Test Signal Number 2 - Multiple transmission of 1000 packets A slotted binary MSG 8 packet with a payload of 010101 prior to NRZI encoding and generated every 5th slot |
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| Test Signal Number 3 -Multiple transmission of 1000 packets A slotted binary MS 8 packet with a payload consisting of 00110011 prior to NRZI encoding and generated every 5th slot |
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| Test Signal Number 4 - Multiple transmission of 1000 packets A slotted MSG 8 packet with a payload consisting of an infinite series of Pseudo Random Sequence (PRS) as specified in ITU/T 0.153 This sequence is then NRZI encoded and generated every 5th slot |
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| Test Signal Number 5 - Multiple transmission of 1000 packets Standard alternating binary Msg 8 packets with payload of 01010101 and 00110011, generated every 5th slot |
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| Presentation Port | Generation of VDM and VDO and proprietary strings |
| Max Number Of Sequential VDL Packets | 2 |
| VDL Mode of operation | RATDMA |
| ITEM 1 | Stream | Infinite stream 10101010 |
| ITEM 2 | Stream | Infinite stream 00110011 |
| BT of 0.5,0.4,0.3 selectable for each menu item – NO NRZI encoding is performed on this stream | ||
| Internal Slot Map synchronized with | External GPS GGA | External GPS 1PPS |
| INTERNAL SLOT MAP FRAME - SYNCRONIZED TO EXTERNAL GPS 1PPS | ||
| Internal Slot Map synchronized with | Profile GPS | External EUT 1PPS |
| IF EXTRNEL EUT SUPPORTS 1PPS AND $GGA INTERNAL SLOT MAP FRAME - SYNCRONIZED TO EXTERNAL GPS 1PPS |
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| Internal Slot Map synchronized with | Profile GPS | Internal slot map |
| INTERNAL SLOT MAP – FREE RUNNING FRAME | ||
| GMSK DSC |
BASEBAND WAVEFORM BT selectable 0.5,0.4,0.3 V23 - 1300Hz / 2100Hz FSK |
Front Panel 50 Ohm BNC Socket @ BT 0.5 - 1VPP into 50E NOMINAL @ BT 0.5 – 2VPP into 1K NOMINAL |
| CLOCK | PULSE FOR THE DURATION OF THE GMSK BASEBAND WAVEFORM CAN BE USED AS A KEYING (PTT) FUNCTION FOR EXTERNAL GENERATORS OR RF DIODE SWITCHES Internal PTT O/P |
Rear Panel 50 Ohm BNC Socket 5V HCMOS |
| GMSK | BT selectable 0.5, 0.4, 0.3 | Front Panel 50 Ohm BNC Socket |
| @ BT 0.5 - 1VPP into 50E NOMINAL @ BT 0.5 - 2VPP into 1K NOMINAL MANUAL/REMOTE LEVEL SET |
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| DC power source | Nominal 13.8VDC @ 500mA - Max 16V |
| Fuse Socket | 1 Amp Continental |
| Signal Generator A | BNC Socket Output @ BT 0.5 - 1VPP into 50E NOMINAL @ BT 0.5 - 2VPP into 1K NOMINAL MANUAL/REMOTE LEVEL SET |
| Signal Generator B | BNC Socket Output @ BT 0.5 - 1VPP into 50E NOMINAL @ BT 0.5 - 2VPP into 1K NOMINAL MANUAL/REMOTE LEVEL SET |
| Internal Start of Packet / PTT Indication | BNC Socket Output |
| Female RS232 socket DB9 FEMALE | External GPS/ 1PPS/AUX |
| Female RS232 socket DB9 FEMALE | Presentation Port and Proprietary |
| Unit | 283 mm (Wide) | 135 mm (Deep) | 60 mm (High) | 1.0 kg |
| Shipping | 32 cm (Wide) | 25 cm (Deep) | 8 cm (High) | 1.3 kg |
