PC-414

®®

DATEL, Inc., Mansfield, MA 02048 (USA)

• Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 • Email: sales@datel.com • Internet: www.datel.com

The FIFO data output may also be routed under host software

control to an on-board parallel data port instead of being sent to

the computer bus. This parallel burst channel data may be read

by an external processor at very high speeds and avoids

possible speed restrictions of the computer bus. The outport

uses a very simple ready/acknowledge transfer handshake which

See model PC-414COM using a DSP COMM port interface.

The analog section of the PC-414 is optimized for high signal

quality and very low dynamic noise. The PC-414 is ideal as

an FFT “front-end” or DSP quantizer for array processors.

The A/D conversion timing section is designed for accurate multi-

scan data acquisition. Software programmable timers control the

interval between each conversion and each multichannel scan.

A programmable sample counter allows sample blocks of

specified length independent of FIFO length. The timer/counter

section uses a precision on-board crystal clock. Timeout and

sample count activities may be monitored using I/O status

registers and/or programmable interrupts. The interrupt method

may be fully synchronized with software programmable DMA

transfers directly to host computer memory.

S/H - A/D triggering can originate from several sources under

software control. The internal timebase is the normal trigger

source although single conversions or scans may be directly

commanded by host I/O register writes. An external trigger

clock may also be used to precisely synchronize sampling with

external events. This external trigger may start a single

multichannel scan or “N” multiple scans separated by

programmable delays.

Analog sampling can also be level-triggered using an on-board

analog comparator and an external level input. The reference

trigger level to the comparator is derived from an on-board 12-

bit D/A converter. If preferred, the D/A converter may also be

used as a general purpose analog output channel.

The PC-414B, D, F, G, H, K, M, N, and P versions contain five

SMA coaxial signal connectors. Four connectors are for the

sampled analog channels. The fifth connector is used for

external timebase clock input, external analog trigger signal,

or for the analog output. The PC-414E, J, and L versions

contain 25-pin “D” connectors (DB-25S). The burst channel

parallel port uses an internal dual row header.

The computer interface conforms to the PC-AT bus structure.

All data transfers (control, status, and A/D data) use 16-bit

transfers. Interrupt level selection is done via software.

Interrupt servicing is generated for a variety of reasons such

as A/D data read, DMA terminal count, sample count

reached, FIFO half-full, or FIFO full.

A/D output data coding is right-justified two’s complement with

sign extension, if desired, straight binary coding can also be

selected making it directly compatible with high level computer

languages such as “C”, Visual C++, Borland C Builder, Visual

Basic, and others.

Software

The PC-414 can be controlled via optional DOS or Windows

NT or 95/98 Control panels, third party software such as

LabVIEW, or user written code in languages such as Visual

C++, Borland C Builder, Visual Basic, etc.

PC-414SET

An MS-DOS based menu driven acquisition

program. Includes setup and configuration

functions, data acquisition via interrupt and DMA,

D/A and counter timer control. Software also

includes A/D and D/A calibration procedures.

• Automatically configures to the display

adapter, CPU, and mouse

• Sets the I/O base address

• Initializes the interrupt and DMA systems

and D/A output

• Allocates base or extended memory

• Performs self-test and A/D-D/A calibration

• Configures A/D sample rate, frame rate,

and sample counter

• Selects trigger mode and DMA or I/O block

transfer

• Selects disk file output format to integer

binary, float binary, or ASCII float

• Saves data to base memory, extended

memory, or disk

• Full source code in “C” and assembly is

available

• MS-DOS or WINDOWS version (visual

“C” interface)

PC-414SRC

Source code for PC-414SET, written in C.

PC-414WIN

A Windows 95/98 or NT GUI control panel

PC-414NT

incorporates all the functions of the PC-414.

Functions include configuration and setup,

analog input to file or disk, analog output, analog

and digital triggering, digital I/O, and calibration.

PC-414WINS

Source code for PC-414WIN written in

Borland C Builder.

PC-414LV

Bridge driver software to LabVIEW 4.0 and 3.1.

PC-414LVS

Source code for PC-414LV allows users to

reduce high level VI’s to lower level VI’s.

Figure 2. PC-414SET Software Operation

Analog

Inputs

PC-414SET

• Window-driven user interface

• Configure hardware

• Start acquisition

• Send data over parallel port

• Store data to memory and /or

disk file

• View data

• Access digital I/O port

• A/D and D/A calibration

• Update D/A

PC-414

Remote receiver

e.g. DSP board,

memory board, etc.

Host

Memory

User written

program

D/A

Converter

Graphics

Display

Disk

Display

Parallel

Port

Start &

Exit Mode

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