Axon Digidata 1322A Betreibershandbuch PDF herunterladen (Seite 22)

16 • Interface Description

Analog Input

There are sixteen 16-bit analog input channels. The BNC shields for the Analog

Inputs are connected to the Analog ground. Each channel has a buffer amplifier to

drive the analog multiplexer such that cross-talk between the inputs will be

minimized.

These input channels are used to digitize signals for Clampex or AxoScope.

Analog Output

The front panel has two 16-bit analog output channels. The average output noise is

150 µV peak-to-peak in a 10 kHz bandwidth measured with a single pole filter

(with no voltage command applied). Each channel has an operational amplifier to

buffer the output signal of the D/A converter. The two analog output channels can

be used simultaneously for waveform generation in Clampex.

Digital Output

Digital Outputs 0-3 are found on the front panel of the Digidata 1322A. The 5 V

CMOS level can be used to trigger external devices and the control is provided in

Clampex.

Trigger In

TAG and START are digital inputs compatible with TTL-level signals. The TAG

input can be used to mark events (e.g., perfusion ON) in Clampex and AxoScope.

The START input can be used to begin data acquisition.

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Axon Digidata 1322A Betreibershandbuch Seite 22