19
Before powering fully the apparatus, check that the output connections of the coaxial cable to the antenna
system are working.
In order to this it is possible to check the indication of the reflected power at low power levels. Only if
the SWR indication on the display is 0, the output power can be slowly increased. At maximum output
power, some watt might be shown as reflected power
2.3 TELEMEASURING SOCKET CONNECTIONS
DB9 Socket
PIN N°
SIGNAL TYPE
IN / OUT
FUNCTION
1
Ground
-
-
2
Analog
Output
FWD Power
0 to 5V
3
Digital
Input
Floating: ON - GND: OFF
Valid only in remote (Pin 6= GND
)
4
Digital
Output
0: Alarm - 1: No alarm
TTL Level
5
-
-
Not used
6
Digital
Input
Floating: Local
GND: Remote
(Pin 3 Command accepted)
7
Analog
Output
REF Power
0 to 5V
8
Analog
Output
Temperature
0 to 5V
9
-
-
Not used
2.4 RS232 / RS485 SOCKET CONNECTIONS
The DB9 connector can be used in two modes (RS232 or RS485) depending on the position of the Dip-
Switch.
PIN N°
1
2
3
4
5
6
7
8
9
RS232
-
RX
TX
+5V
GND
+5V
-
-
-
RS485
-
RX-
RX+
+5V
GND
+5V
TX-
TX+
-
SW1
1
2
3
4
5
6
7
8
RS232
Open
Open
Open
Open
Closed
Closed
Closed
-
RS485
Closed
Closed
Closed
Closed
Open
Open
Open
-
Содержание AUTV/250LD
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