Axel Falcon 35, Руководство по эксплуатации

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Using the RDS SECTION (FM version ONLY)
ENG
Page 82
23.3 TA REMOTE CONTROL TROUGH OPTO INTERFACE
The TA flag may be activated through a dedicated input on the OPTO INTERFACE port (the interface is
available as an option).
The OPTO-INPUT Port is a 9-pin female Interface (on DB-9 connector) which
provides 2 optoinsulated “trigger” inputs: one for SPLIT mode activation and one
for TA flag switching.
Once enabled, TA input activation will cause WARNING LED on Front Panel to light.
The following table displays internal connection of Digital Port.
PIN DESCRIPTION DIRECTION PIN DESCRIPTION DIRECTION
1
Cathode of photocoupler SPLIT input
IN 6 GND /
2
Anode of photocoupler SPLIT input
IN 7 GND /
3 + 5 V via 470 Ohm resistor OUT 8 GND /
4
Anode of photocoupler TA input
IN 9 GND /
5
Cathode of photocoupler TA input
IN
Pins 6, 7, 8, 9 are linked together and provide an insulated GND connection.
A current-l Vdc source is available on pin 3 (+ 5 V via 470 Ohm resistor).
The TA flag may ba activated either by a TTL command or a CLEAN CONTACT
EXAMPLE N° 1 – TA activation by TTL command
OPTO
INPUT
SPLIT
TA
R
+5V
1
5
6
9
1
6
5
9
470 OHM
GND
EXTERNAL
TTL COMMAND
(connector internal view)
external TTL signal must be applied through a 470 Ohm carbon resistor to the TA
photodiode (pins 1 and 2). Max current allowed: 10 mA. Nominal: 5 mA