Getting Started > Laboratory Interfaces > Molecular Devices Digidata 1440A
Molecular Devices Corporation (www.moleculardevices.com)
The Digidata 1440A interface consists of self-contained, mains-powered digitiser unit with BNC I/O sockets attached to the host computer via a USB 2.0 port. The 1440A supports sampling rates up to 250 kHz (16 bit resolution) on up to 16 channels. It has a fixed input and output voltage range of 10V and supports 4 analog output channels and 8 digital output channels.
Software Installation
WinEDR uses Axon’s standard software library (AxDD1400.DLL) for the Digidata 1400 Series. Details for steps (1)-(5) can be found in Axon’s Digidata 1440A Manual.
1) Install the AxoScope (or PCLAMP ) software supplied with the Digidata 1440.
2) Reboot the computer.
3) Attach the Digidata 1440A to a USB port and turn it on.
4) Run WinEDR and select from the main menu
Setup > Laboratory Interface
to open the Laboratory Interface Setup dialog box
then select Molecular Devices (Digidata 1440) from the laboratory interface list.
Signal input / output connections
Signal input and output connections are made via the BNC sockets on the front of the Digidata 1440A digitiser unit.
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Digidata 1440A |
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Analog Input |
I/O Panel |
Notes |
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Ch. 0 |
Analog Input 0 |
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Ch. 1 |
Analog Input 1 |
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Ch. 2 |
Analog Input 2 |
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Ch. 3 |
Analog Input 3 |
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Ch. 4 |
Analog Input 4 |
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Ch. 5 |
Analog Input 5 |
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Ch. 6 |
Analog Input 6 |
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Ch. 7 |
Analog Input 7 |
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Analog Output |
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Ch. 0 |
Analog Out 0 |
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Ch. 1 |
Analog Out 1 |
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Ch. 2 |
Analog Out 2 |
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Ch. 3 |
Analog Out 3 |
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Trigger Inputs |
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Ext. Sweep Trigger |
Start |
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Ext. Stimulus Trigger |
Start |
See Note 1 |
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Digital Output |
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Ch. 0 |
Digital Output 0 |
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Ch. 1 |
Digital Output 1 |
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Ch. 2 |
Digital Output 2 |
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Ch. 3 |
Digital Output 3 |
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Ch. 4 |
Digital Output 4 |
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Ch. 5 |
Digital Output 5 |
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Ch. 6 |
Digital Output 6 |
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Ch. 7 |
Digital Output 7 |
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Note 1. An active-high TTL pulse on this input triggers the start of a stimulus program which has been set up with the External Stimulus Trigger = Y option.