Dual/Quad-Channel Digitizers have 800 kSa/s sample rate.

Press Release Summary:

Models VT1563A and VT1564A consist of C-size, single-slot, register-based VXI modules that enable users to characterize electronic and mechanical transient waveforms. Each channel has analog electronics, including 800 kSa/s 14-bit A/D converters and independent channel isolation. Model VT1563A channels have switchable 25 kHz input filters, while VT1564A channels have 4 selectable input filters. Both offer time or event triggering with selectable reading counts.

Original Press Release:

VT 1563A,VT 1564A 800kSa/a,2-and 4-Channel Digitizers

800 kSa/s sample rate with 14-bit resolution

Input ranges up to 256V, channel isolation 256V

Common mode rejection 113 dB

Time or event triggering with selectable reading counts

Switchable 25 kHz input filter/channel (VT1563A)

Four selectable input filters/channel-1.5kHz, 6kHz, 25kHz, 100kHz (VT1564A)


The VXI Technology VT1563A and VT1564A digitizers are C-size, 1-slot, register-based VXI modules. They are ideal for measurements in electronic production test and electromechanical design characterization, particularly in environments with high levels of electrical noise. Engineers and technicians in manufacturing test, product development, and engineering research test groups can fully characterize electronic and mechanical transient waveforms with these highly accurate digitizers.

Each channel of the digitizers has its own analog electronics, including 800kSa/s 14-bit A/D converters, and independent channel isolation. The VT1563A channels have switchable 25kHz input filters, and the VT1564A channels have four (4) selectable input filters.

The digitizers are configured for PC SIMM memory, scaleable from 4Mbytes to 64Mbytes. The large memory can easily capture transients and act as a FIFO to allow continuous digitizing while unloading data with block mode transfers.

Time Base and Triggering

All channels sample simultaneously with a single internal or external time base. Triggering can be set up for either time or event modes with programmable pre- and post-trigger reading counts


The VT1563A and VT1564A both have a simple programming model which inclides a data FIFO or flat file memory model for the A/D converter, 16-bit integer data corrected for offset and gain errors, and a current value table to retrieve the current sample of data.


The VT1564A provides a calibration source with flash ROM for holding calibration constants.

Refer to the VXI Technology Website for instrument driver availability and downloading instructions, as well as for recent product updates, if applicable.

Product Specifications

Number of channels:

2 (VT1563A)

4 (VT1564A)

Bandwidth: 1 MHz

Resolution: 14 bits (including sign)

Sample rates: 1 Sa/s to 800 kSa/s

Built-in DSP: No

Alias protection: Oversample

Basic accuracy: 0.1%

Time Base resolution: 0.1 µs

Low-frequency CMRR: 113 dB

Variable bandwidth:

VT1563A: 25 kHz switchable filter

VT1564A: 4 selectable filters, 2-pole linear phase

2 dB Input range headroom: n/a

Trigger: Time & Event

Pre-arm capture: Yes

Memory: 4 Mbyte to 64 Mbyte PC SIMM

Dual-ported memory: Yes

Dual-rate sampling: No

Segmented memory: No

VT1564A selectable input filters (per channel): 1.5 kHz, 6 kHz, 25 kHz, 100 kHz

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