14 Inputs / Outputs
14.3.Alarm outputs
Contacts and outputs are available on the rear side connector (A1 / A2), B and C.
The A1/A2 contact is a 
dry contact 
without any potential (24 V /100 mA). The B and C outputs are TTL 5 V outputs.
When the appliance is voltage free, the A1/A2 contact is open and the B and C outputs have a 5 k impedance.
13.1.2.Use
Indication of internal events to the outside and the recorder (triggers on the analogical or logical channels, status of the printing block )
See chapter 
Use 
, paragraph 
Setup 
key.
14.4.Power supply output
There is a +12 V power supply output limited to 0.1 A on the pin #23 of the connector.
The grounding of this power supply is the mechanical grounding.
So, you can use this output to provide power to a sensor or an electronic circuit in order to manage logical inputs.
The 12V supply may disappear in case of overload (> 0.1 A).
You should then turn off the appliance for a few minutes before turning it on again.
14.5.Keyboard input
Typical keyboard socket (mini DIN)
1 | Data | +5V signal |
2 | NC |
|
3 | Ground | 0V |
4 | Power | +5V DC |
5 | Clock | +5V signal |
6 | NC |
|
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