AeroComm Corporation AC4490 Benutzerhandbuch
1 9
S O F T W A R E I N T E R F A C E
www.aerocomm.com
I N T E R F A C E O P T I O N S
M o d e m M o d e
Full modem handshaking is supported by the AC4490 when enabled in EEPROM. Modem mode is incompatible with
RS-485 DE. The line states are updated a maximum of once per 20 ms and only change when toggled by the
appropriate line on the remote radio. Because Command/Data performs an alternate function when modem mode is
enabled, on-the-fly CC Commands cannot be used and Configuration Mode is entered by forcing 9600 baud through
the 9600_Baud pin (pin 12). Therefore, modem mode is disabled when the radio is forced to 9600 baud. Both
modem interfaces are shown in the tables below.
RS-485 DE. The line states are updated a maximum of once per 20 ms and only change when toggled by the
appropriate line on the remote radio. Because Command/Data performs an alternate function when modem mode is
enabled, on-the-fly CC Commands cannot be used and Configuration Mode is entered by forcing 9600 baud through
the 9600_Baud pin (pin 12). Therefore, modem mode is disabled when the radio is forced to 9600 baud. Both
modem interfaces are shown in the tables below.
0x4E
0x09
0x09
0x09
0x53
0x80
0x80
0x80
0x54
0x07
0x07
0x07
RF Packet Size
0x5B
0x46
0x50
0x68
CTS On
0x5C
0xD2
0xDC
0xDC
CTS Off
0x5D
0xAC
0xB0
0xB0
0x5E
0x23
0x23
0x23
0x5F
0x08
0x08
0x08
T a b l e 1 2 : T r a n s c e i v e r I n t e r f a c e t o D C E ( S e r v e r )
DCE Pin
Number
DCE Pin Name
Direction with
respect to
transceiver
AC4490 Pin Name
AC4490 Pin
Number
1
DCD
In
GI1
14
2
RXD
In
RXD
3
3
TXD
Out
TXD
2
4
DTR
Out
GO0
1
5
GND
-
GND
5
6
DSR
In
Command/Data
17
7
RTS
Out
CTS
7
8
CTS
In
RTS
8
9
RI
In
GI0
4
T a b l e 1 1 : A u t o C o n f i g P a r a m e t e r s
Parameter
EEPROM
Address
Default
One Beacon
Mode Disabled
One Beacon
Mode Enabled