JRC jue-87 - Chapter 5: Specifications; JUE-87 System Specifications; EME and IME Unit Specifications

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CHAPTER 5. Specification
5.1 JUE-87
5.1.1 EME (NAF-253GM) and IME (NTF-318)
Table 5.1.1 Principal Specification of JUE-87
Item Specification
Class of Inmarsat-C MES Class 2
Frequency Range
Transmission: 1626.5 to 1646.5MHz
Reception :1537.0 to 1544.2MHz
Channel Spacing: 5KHz
G/T
-23.0 dB/K minimum
EIRP
Within 14 ±2 dBW (at 5 degrees elevation angle)
Modulation
TX: 1200 symbols/sec.
RX: 1200 symbols/sec. BPSK
(BPSK: Binary Phase Shift Keying)
Antenna
Type: Helical antenna
Pattern: Hemisphere (non directional)
Polarization: Right hand circular
Voltage
DC +24V (+19.2 V to +31.2 V)
(When standard PSU, NBD-904 is used)
Power Supply
Power Consumption
Transmission：100 W
Standby time：15W (EME and IME)
160 W Max. (EME, IME, DTE and Printer)
Operative Temperature
-35°C to +55°C (EME operational) -15°C to +55°C (IME)
Storage Temperature
-40°C to +70°C
Relative Humidity
95% (+40°C)
Ice 25 mm (EME)
Precipitation 100 mm/hour (EME)
Wind 100 knots
Environmental
Condition
Vibration Compatibility with IEC 60945
Coding Interleaved, convolution code (R = 1/2, K = 7)
Transmission 600 bps
Data Rate
Reception 600 bps
Max Transmission Message 8K bytes
Reception Message Storage 80K bytes (Inmarsat-C: 40K bytes, EGC: 40K bytes)
Internal GPS JRC original
External GPS
Input sentence: GGA, RMC, GLL, GNS, ZDA, DTM
Baud rate: 4800 bps
LAN RJ-45 : 10 Base-T
DTE ITU-T V24/28, 9600 bps, D-sub 9PIN connector
Interface
Printer
Centronics compatible parallel interface,
Connector：D-sub
25PIN connector
International Protection EME: IP 56-compliant
IME: IP22-compliant (except for while connecting a USB
device to USB drive)
Dimensions
EME: 170 mm (φ) × 379 mm (H)
IME: 336 mm (W) × 86 mm (D) × 244 mm (H)
Mass
EME: 2.4 kg IME: 3.4 kg