VMIVME-4116 卡件 GE电气 _ 山西润盛进出口有限公司

• 8 channels

• 16-bit DACs

• Fast settling: 10 μs maximum to ±0.003 percent of FSR

• Buffered voltage output (±10 V at 5 mA)

• Multiplexed programmable outputs on P2 connector for testing analog

outputs

• Double-buffered data latches

• Jumper-selectable synchronized update control

• Selectable external update control input or software-controlled strobe

provides single update strobe for all DAC outputs

• Front panel fail LED

• High reliability DIN-type output connector

• Outputs set to 0.0 V on power up

— Outputs are automatically disconnected from the field at power up

• Double Eurocard form factor

• Supports VMIC’s analog expansion and Built-in-Test bus (AMXbus™) that

interconnects the P2 connectors of various VMIC ADC and DAC boards and

expansion multiplexer boards

• Multiplexed programmable outputs for testing analog input multiplexer

boards

— Requires VMIC ADC board and AMXbus for Built-In-Test

INTRODUCTION — The VMIVME-4116

Digital-to-Analog Converter (DAC) Board performs

digital-to-analog conversion on 16-bit positive true offset

binary or two’s complement coded words, with an analog

output range of -10 to +10 V. This provides for a resolution

of 305 μV for each digital input of 1 LSB change. The

buffered output voltage settles to within 1/2 LSB in 10 μs.

The DAC offers a Digital-to-Analog Integrated Circuit

(IC) per channel. A Control and Status Register (CSR) is

loaded by the processor and this register controls the

functioning of the board. The CSR can be read by the

processor at any time. The VMIVME-4116 board

functional block diagram is shown in Figure 1. Each of the

eight DACs is preceded by double-buffered data latches.

The data latches allow versatility in the way the DAC analog

output may be updated.

There are three methods by which new data can be

converted by a DAC. Each method is enabled/disabled by

on-board jumpers and is further controlled by a CSR that

must be loaded by the user.

FUNCTIONAL CHARACTERISTICS

Compatibility: The VMIVME-4116 Analog Output

Board is a standard, double height, printed circuit board

which is compatible with the VMEbus specification.

Board Address: The physical address for the board

is selected by 12 DIP switches. VMEbus address lines

A05 through A15 are decoded for board selection.

VMEbus Access: Address modifier bits are

jumper-selectable to support nonprivileged short I/O or

supervisory short I/O access. The board is factory

configured for supervisory short I/O access.

Data Transfer: Data can be written to one of the eight

Digital-to-Analog Converters (DACs) in bytes or words

(via data bits D00 through D15). Bipolar operation

(-10 to +10 V output) uses offset binary coding or two’s

complement binary coding.

Ordering Options

August 13, 1996 800-004116-000 E

VMIVME-4116

Description

Model Number

0 to ±10 V Outputs