AeroComm Corporation AC4490 Benutzerhandbuch
S O F T W A R E I N T E R F A C E
2 0
RS-485 DE Control - When enabled in EEPROM, the transceiver will use the GO0 pin to control the DE pin on external
RS-485 circuitry. If enabled, when the transceiver has data to send to the host, it will assert GO0 High, send the data
to the Host and then take GO0 Low.
RS-485 circuitry. If enabled, when the transceiver has data to send to the host, it will assert GO0 High, send the data
to the Host and then take GO0 Low.
R S 4 8 5 M o d e m M o d e
This mode is only useful for customers that wish to use RS485 DE in conjunction with standard Modem Mode. When
enabled in EEPROM in conjunction with Modem Mode, allows modem control lines over the RF. This mode should
only be used when RS485 DE is also being used. For all other applications, standard Modem Mode is preferred.
enabled in EEPROM in conjunction with Modem Mode, allows modem control lines over the RF. This mode should
only be used when RS485 DE is also being used. For all other applications, standard Modem Mode is preferred.
Available Modem control lines when RS485 Modem Mode is enabled:
• Command/Data on Server controls Hop Frame on Client
• GI1 on Server controls GO1 on Client
• GI1 on Server controls GO1 on Client
M A X P O W E R
Max Power provides a means for controlling the RF output power of the AC4790. Output power and current
consumption can vary by as much as ±10% per transceiver for a particular Max Power setting. Contact AeroComm
for assistance in adjusting Max Power.
consumption can vary by as much as ±10% per transceiver for a particular Max Power setting. Contact AeroComm
for assistance in adjusting Max Power.
T a b l e 1 3 : T r a n s c e i v e r I n t e r f a c e t o D T E ( C l i e n t )
DTE Pin
Number
Number
DTE Pin Name
Direction with
respect to
transceiver
AC4490 Pin Name
AC4490 Pin
Number
1
DCD
Out
GO0
1
2
RXD
Out
TXD
2
3
TXD
In
RXD
3
4
DTR
In
GI0
4
5
GND
-
GND
5
6
DSR
Out
Hop Frame
6
7
RTS
In
RTS
7
8
CTS
Out
CTS
8
9
RI
Out
G01
9
E N G I N E E R ’ S T I P
The max power is set during Production and may vary slightly from one transceiver to another.
The max power can be set as low as desired but should not be set higher than the original
factory setting. A backup of the original power setting is stored in EEPROM address 0x8E.
The max power can be set as low as desired but should not be set higher than the original
factory setting. A backup of the original power setting is stored in EEPROM address 0x8E.