XYCOM Industrial Partner

Xycom XVME-566 Analog I/O, 100 KHz, 32/16-channel analog input module Simple Type: Analog I/O Module

The XVME-566 Fast Analog Input Module is a high-performance, VMEbusªcompatible, 6U (double-high) module capable of performing analog-to-digital conversions with 12-bit resolution and 12-bit accuracy. This module provides 32 single-ended (SE) or 16 differential input (DI) analog input channels. All analog input channels on the module can be configured for unipolar and bipolar voltage (0-10V, ±5V and ±10V). Each input channel is programmable to a specific gain within one of three jumper-selected gain ranges (1 to 10, 4 to 40, and 10 to 100). Gains within the ranges (1, 2, 5 and 10) are stored within a 32-byte Gain RAM. Collection of up to 32K 12-bit samples (32767) are possible via the dual-ported, 64Kbyte Data RAM. The module's dual sample-and-hold architecture assures 12-bit data conversion times of 10usec and a sample throughput rate of 100KHz (8-bit resolution conversion times of 7usec allows 144KHz throughput). The module can operate in one of two data acquisition modes, Sequential or Random. In the Sequential operating mode, data is sampled, converted and stored in the sequence specified in the Sequence RAM. In the Random operating mode, data acquisition is performed on one channel at a time with a throughput of 50 KHz. Either of two data storage modes (contiguous or image) can be used. The contiguous mode stores data from a specified start address, permitting different values to be accumulated for each input channel, therefore creating a history of the events on each channel. The image mode, in contrast, provides only the latest (or updated) value on a channel. The 256-byte Sequence RAM allows the user to specify the order in which data acquisition is performed on the input channels. Once initialization has occurred, the XVME-566 is capable of gathering data without operator intervention. The Am9513A System Timing Controller (STC) on the module can generate outputs that can cause interrupts to the VMEbus, allowing added flexibility during data acquisition. Those features of the STC utilized most often by the XVME-566 are the Sample Clock, Trigger Clock and Event Counter. Detailed information for the System Timing Controller is available with the AM9513 Handbook included with the module.

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