Advantech ARMA-K100-CRM Installation And Operating Manual page 21

Notes:
1. All outputs are open-collector NPN transistors that either are turned on (active closed) or are
turned-off (active open). These NPN transistors have the following characteristics:
2. All inputs are one terminal of a voltage comparator with internal protection resistor and
diodes. These inputs are pulled up to the internal +12V DC and have these characteristics:
The input is active in close state when it is connected to circuit common J3-15 through a
conducted transistor or contact closure of a relay.
For momentarily-closed input, the input pulse width must be more than 10 ms minimum.
The longer pulse width will allow the attenuation to change by more than 0.1 dB.
3. Remote operation: Once the remote control mode is selected from the front panel of a rack-
mount amplifier, two remote control interfaces are available for operation: discrete interface
J3 and serial interface J2. At anytime during the operation only one remote control interface
is active (i.e. ready to accept input command) and the control of redundant switch is ignored
if the optional redundant switch software is not installed.
The selection of remote control interface is via the discrete input J3-9. The active-open input
at J3-9 will enable the commands from the serial interface to be acknowledged and carried
out and the active-closed input (i.e. grounding) will enable the discrete remote. The
monitoring outputs are always active (valid) at either remote interface.
4. * = Pins 12, 13, 16, 17, 18 and 19 are active for Redundant option only.
V max. = 24 VDC
ce
V , sat = 0.8 VDC @ I
ce
= 100 µA @ V
I
ceo ce
Maximum sinking current = 50 mA
Maximum input voltage < 24 VDC
Open state, input resistance > 50 kΩ
Close state, input source impedance < 1kΩ
Close state, required sink current < 1 mA
= 50 mA
c
= 12 VDC
ARMA-K100-CRM
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