Sea Air and Land Communications 1178 사용자 설명서
11-78-0000 SYNTHESIZED NRZ DATA TRANSMITTER PRODUCT INFO
Issue 11787TA
11-78-0000 SYNTHESIZED NRZ DATA TRANSMITTER PRODUCT INFO
Issue 11787TA
Sea Air and Land Communications Ltd
Page 6
Sea Air and Land Communications Ltd
Page 7
!
Adjust CV2 and CV3 for maximum output power.
Power should
be >4watts.
!
Send “7" or “8" to adjust power to 4 watts or required output.
!
Send command “E” and make sure transmitter turns off.
10
PROGRAMMING
10.1
Connecting the Programming adapter:
To change the configuration options, the unit must be connected via a
SALCOM 1146 adapter to the serial port of a IBM PC compatible
computer running the appropriate Product Support Disk (PSD)
containing the software (S1172WE1.EXE) to program the 11-78. This
software can be obtained from our WEB site, shown below.
To change the configuration options, the unit must be connected via a
SALCOM 1146 adapter to the serial port of a IBM PC compatible
computer running the appropriate Product Support Disk (PSD)
containing the software (S1172WE1.EXE) to program the 11-78. This
software can be obtained from our WEB site, shown below.
Connect the SALCOM 1146 adapter to the 15way D type socket S2. To
Spurious Outputs
-36dBm or less
run the PSD, place the disk into floppy drive A. At a DOS prompt, type
A: <enter> S1172WE1 <enter>.
A: <enter> S1172WE1 <enter>.
Correct communication between the 1178 and the PC comm port is
indicated by the ID and product number appearing in the bottom right
hand corner of the screen. If these fail to appear, check the baud rate
setting in File/Preferences.
indicated by the ID and product number appearing in the bottom right
hand corner of the screen. If these fail to appear, check the baud rate
setting in File/Preferences.
10.2
USING THE PROGRAMMING SOFTWARE:
Once the program is running, the opening screen appears. Use the
arrow keys or mouse to select various application layers and the
configuration fields for each feature. At any time context sensitive help
is available by pressing F1.
Once the program is running, the opening screen appears. Use the
arrow keys or mouse to select various application layers and the
configuration fields for each feature. At any time context sensitive help
is available by pressing F1.
The PSD software allows the user to configure the following
characteristics:
characteristics:
C RF carrier frequency
C RF carrier power
C Maximum ON AIR time.
C Low power operation in standby
C Simulcast delay.
The RF Carrier frequency can be selected within a F±3MHz band
without adjustment of the VCO where F is frequency where the VCO
loop voltage has been adjusted to 2.5 Volts. Outside that band some
adjustment may be needed. Adjust L2 for 2.5V Loop Voltage.
without adjustment of the VCO where F is frequency where the VCO
loop voltage has been adjusted to 2.5 Volts. Outside that band some
adjustment may be needed. Adjust L2 for 2.5V Loop Voltage.
11
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 ±1dB 50 O
Power Consumption
Standby : 45 mA Low power standby - 15 mA
Transmit: 1A approx
Transmit: 1A approx
Modulation
Carrier FSK with NRZ data
Deviation
±2.25kHz or ±4.5kHz
Baud rate
512 or 1200 Baud
Modulation
NRZ FFSK
Serial input/output
RS-232 (DCE), 9600 baud no parity,
8 data bits, 1 stop bit
8 data bits, 1 stop bit
Discrete inputs
Pulled up to +12v (47K), ground to activate.
Threshold approx 3v
Threshold approx 3v
Discrete outputs
+12v on P5 pin 8&15 (200mA max).
PTT on S2 pins 7. (20mA sink with diode to 12 V)
PTT on S2 pins 7. (20mA sink with diode to 12 V)
Case Dimensions
160 x 110 x 30mm
Type Approvals
New Zealand - Australia AS4295
Transmit duty cycle
Up to 50%
Connections for S2
Pin No
Function
Pin No
Function
1
Ground
9
Not used
2
Not used
10
Not used
3
Data Inp. 2 / Chan busy
11
Not used
4
Not used
12
Not used
5
PTT input
13
Data Input 1
6
Serial TD
14
Serial RD
7
PTT output
15
+13.5V output
8
+13.5V output
SEA AIR & LAND COMMUNICATIONS LTD
PO Box 22-621, 120 St.Asaph Street, Christchurch, New Zealand
Phone: (03) 379-2298 Fax: (03) 365-1580 Email: info@salcom.co.nz
Visit us at www.salcom.co.nz