Technical Manual

11-75-0000 SYNTHESIZED PAGING TRANSMITTER TECHNICAL MANUAL Issue 0600
Sea Air and Land Communications Ltd Page 12
10 SPECIFICATIONS
Power Supply
+11.5 V to 15.2 V nom 13.8 V
RF Frequency
450-470 MHz
Channel Spacing
12.5 KHz or 25 KHz
Output Power
4 Watts +/- 1 dB 50
Ω
(25 Watts optional)
Power Consumption
Standby : 45 mA Low power standby - 15 mA
Transmit: 1.0A approx
Modulation
Carrier FSK with NRZ data
Deviation
+/-4.5kHz or +/-2.25kHz
Baud rate
512, 1200 Baud
Message format
POCSAG
Spurious Outputs
-30dBm or less
Serial input/output
RS-232 (DCE), 1200-9600 baud no parity,
8 data bits, 1 stop bit
Serial paging
command protocols
SALCOM proprietary, PET (PG1)
GPS (NMEA $GPGGA)
Discrete inputs
Pulled up to +12v (47K), ground to activate
Discrete outputs
+12v on P5 pin 1 (200mA max).
+12v switched P5 pin 9 (200mA max)
PTT & Data on P7 pins 5 and 9
(20mA sink with 47K pull-up to 5 V)
Case Dimensions
140 x 105 x 32mm
Type Approvals
New Zealand - Australia AS4295
Transmit duty cycle
Up to 100%