Pin No
Function
Description
Signal Type
I/O
7
Link option
RSSI
RSSI Level
1.0 to 3.5 V
O/P
8
Program data IN /
Serial command
Used for serial command for radio
control or is used for inputting
programming data
TTL level
(RS232 converter in
programming cable)
I/P
9
Audio OUT
(Speaker)
Audio output from the audio ampli
fi
er.
Filtered by tone-
fi
lter and de-
emphasis circuit.
1KHz audio at 60%
peak dev.
Produces nominal
1Vrms @ 8
Ω
O/P
10
RS232 Data IN for
option module
Data input when the option module
board is installed.
RS232 level
I/P
11
default
RS232 Data Out for
option module
Recovered data output when the
option module is installed..
RS-232 level
O/P
12
default
Buffer status( busy)
for option module
(reserved)
Indicates buffer status to prevent data
loss according to buffer overrun
RS-232 level
O/P
12
Link option
TTL channel change
16 Channel change at TTL level.
0V activates 4 bit word (bit2)
TTL level
IP
12
Link option
Lock Detect signal
PLL lock detect signal
>3V out of lock
<0.5V in lock
O/P
13
GPS data input
Data input for initial setting of GPS
module. (NMEA 0183 format)
TTL level
I/P
13
Link option
TTL channel change
0V activates 4bit word(bit1)
IP
14
(default)
VCC in +12 Volts
nominal
Power supply input, operation outside
the stated range will be subject to
degraded performance
+12 Volts nominal
9v~18v extreme
I/P
14
Link option
DGPS data input
Data input for DGPS Correction of
GPS module. (NMEA 0183 format)
TTL level
I/P
15
GPS data output
Position data output from the GPS
module. (NMEA0183)
TTL level
O/P
15
Link option
TTL channel change
16 channel change at TTL level.
Ground to activate. LSB(bit0)
TTL level
I/P
*This input can be used as direct FM and can be used for FSK if the signal level is
within the limits.
Link options :
To be carried out with reference to the layout and must be carried without
any damage to the pcb. Any damage will invalidate the warranty.
Refer to Application Notes for details of link changes. Application Notes can be found on
the Mobile Expertise Global web site.
5
