ADLINK PCI-9846 - Manual (Page 11)

Introduction 1
1 Introduction
The ADLINK PCI/PXI-9816/26/46 are 10 MS/s, 20 MS/s, and 40
MS/s sampling 16-bit 4-CH digitizers designed for digitizing high
frequency and wide dynamic range signals with an input frequency
up to 20 MHz. The analog input range can be programmed via
software to ±1 V or ±0.2 V. With deep onboard acquisition memory
up to 512 MB, the PCI/PXI-9816/26/46 are not limited by the data
transfer rate of the PCI bus to enable the recording of waveforms
for extended periods of time.
The PCI/PXI-9816/26/46 are equipped with four high linearity 16-
bit A/D converters ideal for demanding applications with a high
dynamic range such as radar, ultrasound, and software-defined
radio.
Analog Input
The PCI/PXI-9816/26/46 each feature four analog input channels.
The bandwidth of each channel can be up to 5 MHz, 10 MHz, and
20 MHz for PCI/PXI-9816, PCI/PXI-9826, and PCI/PXI-9846,
respectively. The input ranges are software programmable as
either ±1 V or ±0.2 V. Software selectable 50 Ω input impedance
makes it easy to interface with high-speed, high-frequency sig-
nals.
Acquisition System and On-board Memory
The PCI/PXI-9816/26/46 include four 16-bit A/D converters to digi-
tize the input signals. These four channels sample signals simulta-
neously at a maximum sampling rate of 10 MS/s, 20 MS/s, and 40
MS/s, respectively. The PCI/PXI-9816/26/46 supports a total of
512 MB on-board memory. The digitized data is stored in the on-
board memory before being transferred to the host memory. The
data transfer is performed using scatter-gather DMA, which pro-
vides a high data throughput rate and uses system memory more
effectively.