Elettronika AUTV/250LD, User Manual

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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 -