Diamond-MM-32X-AT

This product is supported for DSCUD 8.0 and above.

Overview

DMM32X-AT is backwards compatible with DMM32X-AT. However the DMM32X-AT has many enhanced features that improve performance and make it more attractive for certain applications. Some of the features are a 1024 sample FIFO (2048 upon request), 250 KHz max sample rate, auto auto-calibration, D/A wave form generator, and programmable FPGA. DMM32X-AT also has the capability to receive commands via RS232.

Board Initialization

To use the DMM32X-AT board in an appllication using the UD, the dscInitBoard function should use the board macro DSC_DMM32X. This is shown in the example below.

dscInitBoard( DSC_DMM32X , &dsccb, &board );

Analog Input

Max Input Channels:	32 (single-ended), 24 (16/8 single-ended/differential), or 16 (differential)
A/D Resolution:	16 bits (1/65536 of full-scale)
Data range:	-32768 to +32767 for all voltage ranges
Input Ranges (Bipolar):	±10V, ±5V, ±2.5V, ±1.25V, or ±0.625V
Input Ranges (Unipolar):	0-10V, 0-5V, 0-2.5V, or 0-1.25V
Supported Conversion Triggers:	Software, Internal Clock, or External TTL Signal
Maximum Conversion Rate (Software Command):	system-dependent, up to 100,000 per second
Maximum Conversion Rate (Interrupt Routine w/FIFO):	250,000 samples per second
FIFO:	1024 samples (2048 upon request) with programmable threshold

This board supports the following programmable input ranges and resolutions:

A/D Ranges

Code	Range	ADBU	G1	G0	Input Range	Resolution (1 LSB)
0	0	0	0	0	±5V	153μV
1	0	0	0	1	±2.5V	76μV
2	0	0	1	0	±1.25V	38μV
3	0	0	1	1	±0.625V	19μV
4	0	1	0	0	Invalid Setting	-
5	0	1	0	1	Invalid Setting	-
6	0	1	1	0	Invalid Setting	-
7	0	1	1	1	Invalid Setting	-
8	1	0	0	0	±10V	305μV
9	1	0	0	1	±5V	153μV
10	1	0	1	0	±2.5V	76μV
11	1	0	1	1	±1.25V	38μV
12	1	1	0	0	0 - 10V	153μV
13	1	1	0	1	0 - 5V	76μV
14	1	1	1	0	0 - 2.5V	38μV
15	1	1	1	1	0 - 1.25V	19μV

NOTE: Ranges 9 through 11 are identical to ranges 0 through 2.

Analog Output

Max Output Channels:	4 D/A
Resolution:	12 bits (1/4096 of full-scale)
Data range:	0 to 4095 for all voltage ranges
Output Ranges (Bipolar):	±5V, ±10V, or programmable
Output Ranges (Unipolar):	0-5V, 0-10V, or programmable

Digital I/O

Max Ports:	3 (bi-directional, programmable in 8-bit groups, TTL-compatible) similar to 82C55 Digital I/O ports on Diamond-MM-32-AT require direction to be set with dscDIOSetConfig () before use. All DIO lines power-up in input mode and have readback capability. All DIO lines have 4.7K Ohm pull resistors that can be configured for all pull-up or all pull-down with a jumper.

Universal Driver API Notes

For these functions DMM32X-AT has the following restrictions

dscADSampleInt, dscADScanInt

1. FIFO threshold (dscaioint.fifo_depth) must be a multiple of the number of channels

2. Num_conversions (dscaioint.num_conversions) must be a multiple of fifo threshold

3. FIFO threshold (dscaioint.fifo_depth) must be an even number between 0 to 1022 (or 0 to 2046 for 2048 size FIFO)

Diamond-MM-32X-AT Universal Driver Functions

• dscAACCommand()

• dscAACGetStatus()

• dscADAutoCal()

• dscADCalVerify()

• dscADSample()

• dscADSampleInt()

• dscADScan()

• dscADScanInt()

• dscADSetChannel()

• dscADSetSettings()

• dscClearUserInterruptFunction()

• dscCounterDirectSet()

• dscCounterRead()

• dscCounterSetRate()

• dscCounterSetRateSingle()

• dscDAAutoCal()

• dscDACalVerify()

• dscDAConvert()

• dscDAConvertScan()

• dscDIOClearBit()

• dscDIOInputBit()

• dscDIOInputByte()

• dscDIOOutputBit()

• dscDIOOutputByte()

• dscDIOSetBit()

• dscDIOSetConfig()

• dscEnhancedFeaturesEnble()

• dscGetEEPROM()

• dscGetReferenceVoltages()

• dscGetStatus()

• dscSetEEPROM()

• dscSetReferenceVoltages()

• dscSetUserInterruptFunction()

• dscUserInt()

• dscWGBufferSet()

• dscWGCommand()

• dscWGConfigSet()

Limitation

Current UD driver doesn't Support 16- bit AD/DA read/write operations.