5.4.7. CN4 Input key (C/PTT/XFER/Test key) connection
Connect the input key to the switches from the CN4 connector as shown below. Each contact carries a current
of 0.5 mA.
VS-900DI
CN4
GND
Test
0.5 mA
GND
Xfer
0.5 mA
GND
PTT
0.5 mA
GND
C
0.5 mA
14
5.4.6. CN5 in-use indication output connection
• Connect the in-use indication output to the LED from the CN5 connector as shown below.
• A current capacity of 24 V DC/100 mA is required per output.
• To use an LED, connect a current limiting resistor in series with it as the resistor is not build in the card.
• Determine the appropriate resistor value depending on the amount of current (I) necessary for indication
elements (LED, etc.) to be used.
VS-900DI
CN5
GND
OP.
LED
Current
(I)
24 V DC
Current limiting
resistor
Содержание VS-900DI
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