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JRC JLR-21/JLR-31
The JLR-21/31 GPS compass continues the success of its predecessor, reaching a new level of performance and stability with many new features and enhancements. This system is also known as a 3D Dynamic Sensor, which besides giving heading information, is designed to provide highly accurate information of the ships movement in all axis.
The JLR-21/31 has heave functionality built-in as standard. In rough ocean conditions (with high waves), the GPS compass can correct up and down (attitude), movement. This is especially useful for fish finders and sonars on fishing vessels where high waves are compensated for with up to 20 cm accuracy, providing better potential for a profitable catch.
JLR-21/31 supports Speed Over Ground (SOG) and Course Over Ground (COG). The position, SOG and COG are updated every 200 milliseconds (which is 5 times faster than previous model JLR-20), delivering high accuracy.
The GPS compass has its origins as a direction sensing system, but the JLR-21/31 goes far beyond that. The JLR-21 provides heading accuracy of 0.5° and the JLR-31 has an impressive 0.25° heading accuracy. Heave accuracy is 20 cm or better and roll and pitch for both models is 0.5°. The tracking Rate of Turn (ROT) is 45° per second.
The JLR-21/31 incorporates many display modes readily available on a highly visible 5.7 inch LCD display. The display is fully dimmable and the keys are also backlit, making it easy to operate in low-light settings on the bridge.
The processor is built into the antenna. Eliminating alignment between antenna and processor found in separate systems, therefore contributing to an easy setup with less error and significantly reduced installation time. This concept also reduces the installation costs as only a single cable is used between antenna and display unit. The system has a short start-up time (less than 2 minutes). Maintenance is not required, making it less expensive to maintain than a standard gyro system.
The GPS compass allows calculation of distance and bearing between any two points, supporting Rhumb Lines (RL) for the short legs and Great Circle (GC) for long distance legs. Also, a trip log function comes standard for distance and heading.
The JLR-21/31 has CCRP function incorporated, allowing the transfer of CCRP sentences to other onboard equipment and anchor watch alerts the watch officer of possible anchor dragging situations.
The new trend graph display mode shows a history of roll, pitch and heave and SOG as an easy-to-read graphical view. Selections can be made to show maximum or average results.
The new GPS compass integrates 5 independent working NMEA output ports, which allows for connection to a wide range of onboard navigation equipment, such as radar, plotter, autopilot, sonar or other navigation devices.
Specification:
| Receiver type: | Multi channel all-in-view (12ch 1ch SBAS) | | Frequency: | 1575.42MHz ±1MHz (C/A code)
| Direction accuracy:
JLR-21
JLR-31 |
0.5° rms
0.25° rms
| | Display resolution: | 0.1°
| | Output resolution: | 0.1° or 0.01° (selectable)
| | Tracking rate of turn: | 45°/sec
| | Tracking acceleration: | 1G | | Settling time: | ≤2min (warm start fix)
| | DGPS input: | RTCM SC-104 ver2.0 type 1,2,9,16 | | SBAS receiver: | built in (WAAS, EGNOS, MSAS)
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| Roll/pitch output: |
-60° to 60° |
| Position accuracy: |
12m 2drms (C/A code, HDOP=<4, SA OFF)
6m 2drms when SBAS corrected
4m 2drms when DGPS corrected (when connected to beacon receiver) |
| Waterproof: | IEC60945 ed.4 (IPX6/USCG CFR-46)
| Ambient condition:
operating temperature
storage temperature |
-25°C +55°C
-25°C +70°C
| | Display unit: | 5.7” FSTN LCD 320×240 dot
| | Display modes: | Compass rose, bow heading, navigation, rate of turn (ROT), water/ground speed, trend graph, calculation, GPS status | | Output: | 5 independent working NMEA0183 ports (ver. 1.5, 2.1, 2.3)
AD10 output available: 2 of 5 ports
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| Transmission speed: |
4800, 9600, 19200, 38400, 57600 bps |
| Output interval: |
20ms, 25ms, 50ms, 100ms, 200ms, 500ms, 1s, 2s, 3s, 4s, 5s, 6s, 7s, 8s, 9s |
| IEC61162 output: | HDT, THS, ROT, ZDA, GGA, VTG, RMC, GBS, DTM, GSA, GSV, GNS, MSS, GST, GLL, ALR, ATT, HVE | | Current data input: | 1 port (CUR, VBW)
| | Alarm contact signal: | alarm output × 2 ports
alarm ACK input × 1 port | | LOG pulse: | 1 port (off, 200p/nm, 400p/nm) | | Waterproof: | IPX4 | Ambient condition:
operating temperature
storage temperature |
-15°C +55°C
-15°C +70°C
| | Power supply: | DC 12/24V +30% -10%
| | Power consumption: | 12W (sensor and display unit)
6 W (excluding sensor) | | Vibration/EMC: | IEC60945 ed.4
| Dimensions:
Display
NNN-20 sensor
NNN-30 sensor |
142 × 230 × 85 mm
561 × 621 × 285 mm
913 × 1027 × 286 mm | Weight:
Display
NNN-21 sensor
NNN-31 sensor |
2.3 kg
5.9 kg
10 kg | | Standard:
| Display | NWZ-4701 | | Sensor (built in processor unit) | NNN-21 (JLR-21) or NNN-31 (JLR-31) | | Power cable display | 2 m
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| Serial data cable |
CFQ-5374, 3 m |
| Display to antenna |
10 m |
| Options:
| | AC power rectifier | NBG-320
| | Dry contact signal cable | CFQ-5404 (3m)
| | Data extension cable | CFQ-7249 (20m)
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| Beacon extension cable |
CFQ-7250 (3 m data, 0,4 m pwr) |
| Flush mount kit |
MPBC43664 |
| Junction box | NQE-7720
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| DGPS receiver |
JLR-4341 |
| Anti-bird kit |
MPXP34012A |
| Y cable for sub display |
CFQ-7251 |
| Data cable |
CFQ-5469 (for JMA-5100/5200/5300) |
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