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Connecting the Remote Outputs
Setting the Remote Output Polarities from the Xcalibur Data System
Thermo Scientific
The Accela PDA Detector has two remote outputs: READY and EVENT (see
page
14). The outputs are open collectors and are each capable of sinking < 30 mA at
30 V dc, suitable for connecting to TTL and other families of ICs. In addition, there is a 5 V
output that supplies +5 V dc at 150 mA maximum that you can use for testing digital input
signals. When connecting to TTL inputs, a pull-up resistor (typically 10 kΩ) is required
across the +5 V output and the open collector input connection if one is not built into the
external device.
The polarity settings (active high or active low) of these outputs must match those of the
inputs of connecting equipment.
To set the polarity of the remote outputs
1. Install the Xcalibur data system if you have not already done so.
2. Add the Accela PDA Detector to the configuration for your instrument. See
"Configuration."
3. Start the Xcalibur data system.
4. In the Xcalibur Roadmap view, click the Instrument Setup icon.
The Instrument Setup window appears.
5. In the view bar, click the Accela PDA button.
The Instrument Setup view for the Accela PDA Detector appears.
6. On the menu bar, choose Accela PDA > Direct Control.
The Accela PDA Direct Control dialog box appears.
Note The Accela Autosampler requires low active remote inputs.
7. Click the Configuration tab.
The Configuration page appears (see
Figure
17).
Accela PDA Detector Hardware Manual
2
Installation
Connecting the Remote Outputs
Figure 10
on
Chapter 3,
21
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