FTS LT1-CELL-VZ, Руководство оператора

Страница: 58 / 66

700- LT1-Man Rev 8 09 Feb 2021 Page 52/60
DATA and TRANSMISSION
Data Rates Satcom (Iridium): 340 B (Max Mobile Originated Message Size
270 B (Max Mobile Terminated Message Size)
Transmit Frequency
Ranges Satcom (Iridium): 1616 to 1626.5 MHz
Bluetooth: 2360 to 2500 MHz
RF Bandwidths Satcom (Iridium): 31.5 kHz
Bluetooth: 1 MHz
RF Transmit Power
(conducted) Satcom (Iridium): +32 dBm max.
Bluetooth LE: +4 dBm max.
Antenna Satcom (Iridium): RHCP, 50 ohms, 3 dBi max ( SMA -connector)
GPS: RHCP, 3.3V/50 mA active ( SMA -connector)
Bluetooth LE: Internal
Real Time Clock Synchronized to GPS
Clock accuracy: ±1 second
C.4
4 AND 8 PIN CONNECTOR MAXIMUM RATINGS
4-pin
connector
pin #
Name Pin Function Maximum rating
1 CG Chassis Ground –
2 G Power Ground –
3 HT High Current Power In 20 VDC max., -20 VDC min.
4 PW Battery Power In LT1-CELL/LT1-IRID: 20 VDC max., -20 VDC min
LT1-GOES: 16 VDC max., -20 VDC min.
8-pin
connector
pin #
Name Pin Function Maximum rating
1 B RS-485 Comms B 12 VDC max., -7 VDC min.
2 A RS-485 Comms A 12 VDC max., -7 VDC min.
3 G Signal Ground –
4 SD SDI-12 Data 6 VDC max., -3.5 VDC min.
5 SP SDI-12 Power Out LT1-CELL/LT1-IRID: 20 VDC max., 0 VDC min
LT1-GOES: 16 VDC max., 0 VDC min.
6 GD Power Ground –
7 RN Discrete Counter In 12 VDC max., -0.5 VDC min.
8 P RS-485 Sensor Power
Out LT1-CELL/LT1-IRID: 20 VDC max., -20 VDC min.
LT1-GOES: 16 VDC max., -20 VDC min.