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Acromag acquisition boards have "mailbox" memories

Posted: 10 Sep 2002 ?? ?Print Version ?Bookmark and Share

Keywords:acromag? apc330? acpc330? pci input board? compactpci input board?

The APC330 PCI and AcPC330 CompactPCI analog input boards from Acromag Inc. employ 16-bit ADCs that are able to scan channels in just 85s to achieve throughput rate of 125kHz.

Both boards feature 16 differential or 32 single-ended input channels that accept 110V or 0V to 10Vdc in several user-selectable ranges. Each channel has its own memory "mailbox" with one or two storage buffer registers, which allows the CPU to read the latest data in the storage buffer registers without interrupting the ADC.

Programmable scan control with four modes allows users to scan all channels or define a subset for more frequent sampling. A burst mode scans selected channels at the maximum conversion rate, while uniform mode performs conversions at user-defined intervals. Both modes can scan continuously, or execute a single cycle upon receiving a trigger.

An interval timer is user-programmable, while external trigger inputs and outputs are supported. Post-conversion interrupts can also be configured to simplify data acquisition and provide greater control.

The CompactPCI version of this board offers a more rugged Eurocard format in a 6U size for use in a card cage enclosure for easy board insertion and removal.

The PCI version is well suited to desktop computers in laboratories, industrial computers common in manufacturing plants, or embedded systems in machinery or other devices.

The APC330 and AcPC330 dissipates a maximum of 275mA and are rated for operation over 00C to 700C or -400C to 850C.

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