Omega WB-FLASH User guide

TABLE OF CONTENTS

In Chapter 1

Contents

Features at a Glance

Chapter 1 Introduction

General Information

Features and Configurations

WB-FLASH12 operator’s Manual

iv

1 – 1
1 – 4

FLPC E01/P01 06/95

i

WB-FLASH12 OPERATOR’S MANUAL

In Chapter 2

Table of Contents

ii

Contents

Chapter 2 Installing the WB-FLASH12

Overview

Verifying WB-FLASH12 Switch Settings

Illustration of the WB-FLASH12 Board

Illustration of the WB-FLASH12 Board with Daughterboard

Physical Board Installation

Setting the Board Number Switch

Setting the Base Address

Single-Ended vs. Differential Inputs

2 – 1

2 – 2

2 – 3
2 – 4
2 – 5

2 – 7

2 – 9

2 – 11

TABLE OF CONTENTS

In Chapter 3

Contents

Chapter 3 Technical Notes

Overview

Pin Assignments for WB-FLASH12

Block Diagram of WB-FLASH12

Block Diagram of WB-FLASH12 Daughterboard

Triggering

Using EDITCAL

Changing Hardware Interrupts

Troubleshooting: Installation

Troubleshooting: Operation

Specifications of the WB-FLASH12

WB-FLASH12 operator’s Manual

3 – 1

3 – 2

3 – 3
3 – 4
3 – 5
3 – 8
3 – 10
3 – 11
3 – 12
3 – 15

iii

WB-FLASH12 OPERATOR’S MANUAL

Features at a Glance

Highlights of the WB-FLASH12 Models

Maximum Speed

Model 1:

Model 2:

1MHz, Single Channel

1MHz, Multi-Channel

1MHz, Single Channel

400kHz, Multi-Channel

Maximum Resolution

Model 1:
Model 2:

14 Bits (.006%)
14 Bits (.006%)

Analog Input Gain Ranges

Model 1:

15 selectable Ranges

Model 2:

1 Fixed Range

All Models of the WB-FLASH12 Feature

16 Single-Ended or 8 Differential Analog Input

channels · 8 Digital I/O lines, user configurable · Input

protection to 30 Volts, operating · On-board pacer

clock · Wide acceptance of sensor devices · Pre- and

Post-Triggering · On-board counter/timer · Optional

daughterboard, featuring two analog outputs and additional

memory · Factory guaranteed accuracy for two years from

date of purchase

Front Matter

iv

INTRODUCTION

General Information

Chapter 1: Introduction to the
WB-FLASH12

Thank you for selecting the WB-FLASH12 for your project!
Our primary objective is to provide you with data acquisition systems that

are easy to install, operate, and maintain. W e also strive to furnish the perfor­mance you need at the lowest overall cost. The benefits for you are increased
productivity, data you can count on, and, of course, meeting your budget.

We manufacture the WB-FLASH12 as an enhancement board that readily
mounts in an ISA expansion slot in an IBM PC, or -compatible, computer.

This product’s high speed, extensive timing features, and its guaranteed long
term stability make it ideal for speed-critical applications in both the labora­tory and harsh industrial environments.

Using the WB-FLASH12 board together with our graphical interface applica­tion software (such as WorkBench PC™ for Windows or DOS, or Quick­Log™ PC), you can easily and very quickly implement a broad spectrum of
research and commercial tasks, in a wide variety of settings. You can, for ex­ample,

· Display and log data

· Measure temperature, pressure, flow

· Perform scale, offset, or complex calculations

· Monitor and control processes

· Set alarm limits

· Control devices at preset levels

· Control devices from digital input

· Gather data unattended

You can use the system interactively, operating controls or modifying your
setup while the system is running.

to disk for later analysis,

and most other analog inputs

from sensors and instruments,

on a measurement,

,

on any input,

(fans, pumps, heaters, etc.),

(e. g., from switches or TTL

signals), and

.

WB-FLASH12 Operator’s Manual

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WB-FLASH12 OPERATOR’S MANUAL

DEVELOPMENT

EXPANDABILITY

RANGES/

DATA

HALF-FLASH

General Information

People who decide, on the other hand, to write their own software

SYSTEM

(rather than using an off-the-shelf application) can employ the
Analog Connection Development System™ hardware driver to
address all features of the WB-FLASH12 board from within a pr o­gram they design and code for their specific purpose.

A WB-FLASH12 product has eight differential (or 16 single-end­ed) analog input channels; and you can add one board at a time to
your computer, for as many as 15 boar ds with a total of 120 analog
input channels (240 single-ended) and 120 digital input/output
lines!

(Note that the installation is limited to five boards when using our

DOS software.)

The 15 input ranges of the WB-FLASH12 Model 1 span from 50

UNITS OF MEASURE

milliV olts thr ough 10 V olts, capable of accepting data fr om almost
any sensor. Its high conversion rate also makes the WB-FLASH12
ideal for high speed measurement in the plant or laboratory.

The WB-FLASH12 together with our software – such as Work­Bench PC for Windows or DOS and QuickLog PC – make it easy
to specify engineering units (degrees, V olts, milliAmperes, etc.) for
measurements, as well as which ranges to use.

PRESENTATION

CONVERTER

Chapter 1 Introduction

1 – 2

(You can measure temperature, for example, by selecting from
among 11 different thermocouple types. With our application
software, the process simply consists of selecting the type of sens­ing device from a menu – the driver automatically handles cold
junction compensation and linearization.)

The combination of our hardware and application software
(WorkBench PC for Windows or DOS or QuickLog PC) enables
both the display of data on the screen, and the logging of data to
disk for later analysis.

The system is capable of showing data on the monitor in a variety
of formats, including graphical meters. Charts can indicate trends
for comparison of actual measurements on several channels, or for
setting data points or alarms.

Your WB-FLASH12 incorporates our unique “Half Flash” con­verter, greatly improving the board’s speed.

In analog to digital conversion, the highest speed designs use
what is called a “flash” converter. Flash converters are unique in
that they use comparators – one for each bit – to detect whether
an analog input signal is higher or lower than a particular refer­ence point. The output of all comparators is encoded by digital
logic to then yield the digital output. Because the conversion

INTRODUCTION

General Information

takes only as long as it takes for the comparators to detect the
input level, conversion rates of greater than 50 nanoseconds are
easily achieved.

Despite their speed, flash converters are rarely used in data acqui­sition products. Because there are as many comparators as there
are bits (an 8-bit converter has 28 = 256 comparators!), they are
quite expensive to produce.

For the WB-FLASH12 boards, we developed a unique “half flash”
converter which overcomes the expense and complexity of a full
flash converter. With the half flash converter, the A/D conversion
takes place in two steps: 1) a rough approximation of the digital
code is generated, and 2) the approximation is adjusted to the
correct value.

While this two step process is slower than the flash converter, it
will still yield conversion rates of up to 1µs, or 1MHz. Because of
this unique process, the WB-FLASH12 is one of the fastest data
acquisition boards in the industry!

WB-FLASH12 Operator’s Manual

1 – 3

WB-FLASH12 OPERATOR’S MANUAL

ANALOG

RESOLUTION

DATA ACQUISITION

RANGES

SENSORS

ACCURACY

INPUT

PROTECTION

ANALOG OUTPUT

DIGITAL I/O

COUNTER/TIMER

OPTIONAL

Features and Configurations

Features and Configurations

The WB-FLASH12 line consists of two models: the WB-FLASH12
Model 1 and the WB-FLASH12 Model 2. The boards possess these
features:

Both models of the WB-FLASH12 can be set for either eight differ -

INPUT CHANNELS

SELECTIONS

ential or 16 single-ended analog inputs.
The resolution of your WB-FLASH12 is selectable in software,

ranging from12 through 14 bits.
The maximum single-channel acquisition rate for both models of

the WB-FLASH12 is 1MHz. For the Model 1, the maximum mul-

SPEED

tichannel rate is 1MHz, while the Model 2 can sample multiple
channels at up to 400kHz.

The WB-FLASH12 Model 1 features 15 voltage ranges, from
±15mV up to ±10V, all selectable individually for each analog input
channel.

The WB-FLASH12 Model 2 has a fixed gain range of ±5V.

CHANNELS

DAUGHTERBOARD

Chapter 1 Introduction

1 – 4

Each WB-FLASH12 provides accurate cold junction compensa­tion and linearization for thermocouple devices when used with
appropriate terminal panels.

We guarantee the factory calibration of the WB-FLASH12s for a
period of two years from the date of purchase. (If it is ever neces­sary, the user can recalibrate the board with precision through the
use of software utilities we provide with every product.)

Built-in circuitry assures protection of analog input channels for
±30 Volts operating, or ±20 Volts non-operating.

The optional daughterboard for the WB-FLASH12 includes two
analog output channels, each with five software selectable gain
ranges.

All WB-FLASH12s feature 8 digital input/output channels that
the user can configure individually to be input or output.

Every WB-FLASH12 board includes a counter/timer for precise
timing (for counting pulses or other events) which you can use as
a pulse output.

An optional daughterboard (DB03-M) is available for the
WB-FLASH12 that will increase its memory from 64k samples to
1M samples; it also includes two analog outputs. In addition, the
DB03-M features an analog output buffer.

TERMINAL

PANELS

FOR MORE

WB-FLASH12 SYS

INFORMATION

TEM

REQUIREMENTS

INTRODUCTION

Features and Configurations

Other available accessories for the WB-FLASH12 include your
choice of screw fastener terminal panels for connecting sensors.
They include general purpose and thermocouple terminal panels,
most of which accept digital opto-isolators.

For more information about the capabilities of your
WB-FLASH12, please see “Product Specifications” in Chapter 3.

For instructions on controlling the board with our interface soft­ware (such as WorkBench PC for Windows or DOS or QuickLog
PC), refer to the appropriate software manual.

To learn more about data acquisition and process control in gen­eral, and how to use our products together to accomplish every­day tasks, consult our

Applications

manual.

And, last but not least, if you’re creating your own program to
address the WB-FLASH12 for a custom purpose, please see the

Analog Connection Development System Manual.

Before installing the WB-FLASH12, make sure the computer sys-

-

tem fulfills these minimum requirements:

Hardware –

· IBM PC XT, AT, (or higher), or -compatible

640k system RAM and full-size ISA slot,

· Floppy disk drive

Software Environment –

· DOS 3.0

(or higher, depending on the application software),

· Application software

and a hard drive.

(WorkBench PC for Windows or DOS,
QuickLog PC, the Analog Connection Development Sys­tem, or other compatible proprietary software; please see
your software manual for directions for using it with the
hardware).

, with at least

WB-FLASH12 Operator’s Manual

1 – 5

WB-FLASH12 OPERATOR’S MANUAL

Chapter 1 Introduction

1 – 6

INSTALLATION

Chapter 2: Installing the WB-FLASH12

Getting your WB-FLASH12 data acquisition and process control board up
and running is a straightforward process; you only need to

Overview

· Verify the board’s switch settings

system addressing of OMEGA products (see page 2 – 2),

· Physically insert the board

(page 2 – 5; and illustration on 2 – 3),

· Connect a terminal panel to the board

and for digital outputs from the WB-FLASH12; see page 2 – 5),
and

· Load and start up the software

As the scope of this manual focuses on the WB-FLASH12 board, this chap­ter discusses board’s switch settings, and the physical insertion of the board.

Please see your terminal panel manual for full instructions regarding its
attachment to the WB-FLASH12, as well as for how to connect sensors to
the panel.

Guidelines for loading the software, and for starting up, depend on the
application program you are going to use (such as our WorkBench PC for
Windows or DOS, or QuickLog PC, or a package by a third party developer
who has our authorization).

The program you are going to use with the WB-FLASH12 might even be
unique and proprietary, a product of your organization. (The Analog Con­nection Development System is a powerful set of utilities making it possible
for software engineers to design and develop their own programs to exploit
the WB-FLASH12’s many features.)

that control board identity and

into a slot of the personal computer

(to attach sensing devices

to be used for the project.

In any event, please refer to the software provider’s installation manual, or
user guide, for specific information on how to load and run the particular
program.

Troubleshooting –

to the “Troubleshooting” section in Chapter 3.

Strawberry Tree

If you have any difficulty getting your board to work, refer

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WB-FLASH12 OPERATOR’S MANUAL

SINGLE BOARD

MULTIPLE

PREVIOUSLY

Verifying Switch Settings

Verifying WB-FLASH12 Switch Settings

When you purchase a data acquisition board new from our com­pany, the product’s switch settings already are correct to operate a

single

board with our software (WorkBench PC for Windows or
DOS, QuickLog PC, the Analog Connection Development Sys­tem, and all others).

This means the factory switch settings are right for the purpose of
using only one board, and you can skip the task of confirming
them. You can go directly to the “Physical Board Installation” sec­tion on page 2 – 5 in this chapter, and begin to follow the steps
there.

If you are using more than one board at a time, set the individual

BOARDS

boards’ Board Number Switch first (refer to “Setting the Board
Number Switch” on page 2 – 9), then go on to perform the phys­ical installation.

Otherwise, there’s no reason to be concerned about the board’s
switch settings, except in the unlikely event you encounter a
problem in getting your product to operate. (If you experience a
problem, refer to “Troubleshooting” in Chapter 3).

Chapter 2 Installation

2 – 2

IN USE

If, on the other hand, your board has been in use previously in
another computer, or if your company uses its own proprietary
software, the present switch positions might differ from the fac­tory settings.

If your company uses such a program, making changes to factory
switch settings might be necessary to accommodate it. Please
consult the administrator of your internal system, or the provider
of third party software, to determine their recommendations for
any unusual switch setting.

To check and restore the factory values, please read “Board Num­ber Switch Settings” on 2 – 8 in this chapter.

D

E

F

0

1

2

3

4

5

Board Number

switch (detail:)

–

INSTALLATION

WB-FLASH12 Board

Attach

cable

connector

from

terminal

panel

here

Back

panel

mounting

bracket

C

B

A

9

8

7

6

SW1

Base Address

SW2

insert; seat firmly

switches (detail:)

Interrupt Jumpers

Strawberry Tree

PC ISA expansion slot

U5

U7

U6

Figure1. Illustration of FLASH-12 Data Acquisition Board, Showing Physical Installation

Daughterboard Connector

(50 pins)

DRAM chips

(U5, U6, U7)

WB-FLASH12 Operator’s Manual

2 – 3

WB-FLASH12 OPERATOR’S MANUAL

WB-FLASH12 with Daughterboard

D

C

E

B

F

A

0

9

1

8

2

7

3

6

4

5

Board Number

switch (detail:)

–

Attach

cable

connector

from

terminal

panel

here

Back

panel

mounting

bracket

SW1

Base Address

switches (detail:)

SW2

Interrupt Jumpers

insert; seat firmly

Figure 2. Illustration of FLASH-12 Data Acquisition Board, with Optional Daughterboard Installed

Chapter 2 Installation

2 – 4

PC ISA expansion slot

TERMINAL PANEL

PHYSICAL

CONNECTIONS

INSTALLATION

Physical Installation

Physical Board Installation

Installation very simply consists of inserting the board into an
open ISA AT (long) peripheral (expansion) slot inside your com­puter.

(There are, for example, five available slots in the IBM PC, and
eight in the IBM XT or AT. IBM and other companies sell expan­sion chassis that can accept even more analog cards. Our Win­dows software supports as many as 15 WB-FLASH12 boards at
one time; up to five can be installed for use with our DOS soft­ware.)

When using a terminal panel with the WB-FLASH12 (to connect
external devices: sensors and digital input/output) you are going
to be using a single ribbon cable from the terminal panel. This
cable plugs into a 50 pin connector at the back panel of the WB­FLASH12 and, at its far end, plugs into a 50 pin connector at the
terminal panel. Each 50 pin cable connector has a key on one
side that mates with a socket on the device; be sure to observe
polarity when attaching.

Strawberry Tree

INSTALLATION

(Refer to the illustration on page 2 – 3. Also see “Pinouts,” on
page 3 – 2 of this manual, for a description of the signals.)

To Install the WB-FLASH12 Board –

1.

TURN THE COMPUTER OFF!

puter without first turning its power switch to the “off” position.

2.

Open the Computer.

appropriate, refer to your computer’s owner’s manual for
more information about removing the cover and installing
enhancement boards.)

3.

Ground Yourself.

touch the metal chassis of the computer to discharge any
static electricity that might be on the surface of your body.

This is important, as static electricity can damage electronic

parts. (Likewise, if you ever remove the board from the com­puter, always store it in its protective shipping bag.)

4.

Remove

unscrew and remove the narrow dust cover plate that is
directly behind the expansion slot you want to use. (Keep this
screw handy.)

the Dust Cover.

While holding the board, before installing it,

Never remove the cover of the com-

Remove the cover of the computer. (If

At the back panel of the computer,

WB-FLASH12 Operator’s Manual

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WB-FLASH12 OPERATOR’S MANUAL

CAUTION

NEXT STEPS

Physical Installation

5.

Insert the Board.

having “gold fingers” down and into a twin connector expan­sion slot (socket) on the chassis so that the contacts align
with the socket, then plug it in by pushing the board straight
down.

6.

Fasten the Board to the Chassis.

from step 4. Place it in the original hole, through the WB­FLASH12 board’s bracket, so that it fastens the top of the
bracket to the computer’s back panel.

7.

Connect the Cable to Board and T erminal

the data acquisition board, and the connector on its far end
into the socket on the terminal panel (please refer to your ter­minal panel’s manual, if you are unsure about the correct
position).

Incorrect installation of these cables can damage the data

acquisition board or the terminal panel. (If you are uncertain
about proper placement, please see “Terminal Panel Connec­tions” at the beginning of this discussion, and inspect the dia­gram on page 2 – 3.)

Single Board Usage –

sition board in your system, you are now ready to install your ap­plication software and to connect sensors to your terminal panel.

Push the edge of the WB-FLASH12 board

Install the “left over” screw

Panel.

Plug the cable into

If you intend to run with a single data acqui-

Chapter 2 Installation

2 – 6

Multiple Board Usage –

If you are going to use more than one data
acquisition board, now it’s time to set each Board Number Switch
to an unique number. Follow the steps in the “Setting the Board
Number Switch” section in this chapter on page 2 – 9.

Installing the Software –

For information on loading and configur­ing our WorkBench PC for Windows or DOS or QuickLog PC
please refer to the user guide for that application package.

IMPORTANT! Setting the Analog Input Mode –

You must set the Ana­log Input mode in the software before using the WB-FLASH12.
See “Single-Ended vs. Differential Inputs” on page 2 – 13.

Installing the T erminal Panels –

T o learn how to connect experiments
to the terminal panel see your terminal panel owner’s manual, or
our Applications manual (which discusses data acquisition and
control in general and provides examples of uses for the pr oducts).

INSTALLATION

MULTIPLE BOARDS

SINGLE BOARD

DISABLING BOARDS

SETTING

Setting the Board Number Switch

Setting Board Number Switch

When you are using multiple boards in your installation, each
board needs to have an identity for the software to recognize it as
an “individual.”

The Board Number switch on a board accomplishes this, as it
enables you to set an identifying number for the board (see the
illustration on page 2 – 3).

This number determines, among other things, the sequence in
which the software reads multiple boards. OMEGA programs can
address as many as 15 boards total (but if you are working in
DOS, no more than 5 of these boards can be from the high speed
family, i.e. WB-FLASH12 or WB-WORKMATE boards).

When using more than one OMEGA product in your installation,
every board’s Board Number switch needs to have a different
number setting, and all switches are to be in number sequence
(1, 2, 3, for example, if you are using three boards).

THE SWITCH

(If you are working in DOS and there are also WB-AAI/F AI family
boards in your installation, then their Board Numbers need to be
at the low end of the number sequence.)

If your system includes just a single data acquisition board, then
you don’t need to have much concern about the Board Number
switch.

When your WB-FLASH12 leaves our manufacturing facility, we
set the Board Number switch to 1, and this is the setting we rec­ommend for most purposes when you are using only one board
in your installation.

If you want to disable the board, for any reason, set its Board
Number switch to 0. (This is handy if you want to use fewer
boards for a while: that way you don’t have to r emove them from
the computer.)

To Set the Board Number Switch –

1.

Locate

the Switch.

examine the illustration on page 2 – 3 in this chapter and find
the “Board Number Switch” on the WB-FLASH12.

On the printed circuit board, this is a rotary switch with the

label “SW1.”

With the cover of your computer removed,

Strawberry Tree

WB-FLASH12 Operator’s Manual

2 – 7

WB-FLASH12 OPERATOR’S MANUAL

Setting the Board Number Switch

2.

Make

the Setting.

numbers on the detents are 0 through 9 and A through F.
Determine which is to be the First Board. (This is easy, if it is

the sole board.) Then turn its dial to 1. Determine which is to
be the Second Board, then set its switch to 2. Continue this
process until all of the boards have been assignedand set to a
unique number.

Note that the switch has 16 possible positions:

If you are working in DOS –

to use system installation digital I/O channels 1-8 and analog

The software interprets First Board

input channels 1 through 8 (or channels 1 through 16 for
single-ended inputs). The program then recognizes the Sec­ond Board to use system installation digital I/O channels 9-16
and analog input channels 9 through 16 (for differential
inputs), or system installation analog input channels 17
through 32 (if the inputs are single-ended).

3.

Set

All Switches.

Continue to set the switches for all boards in
your installation to unique numerical values in an unbroken
sequence.

(As various models of our boards use different kinds of

switches, please see their operator’s manuals for an explana­tion of how to set switches.)

Chapter 2 Installation

2 – 8

INSTALLATION

SETTING WB

Setting the Base Address

Setting the Base Address

The Base Address determines the logical system address where
the personal computer expects to find all data acquisition boards.
Base Addresses must be the same

The factory setting for all of our data acquisition products is
300H (in hexadecimal format).

on all boards.

FLASH12

It is rarely necessary, but if you have difficulty getting the board to
work you can change these switches to values different from the
factory settings. (Another device in your PC, for example, might
be trying to use the same Base Address.)

Indications of this are: if the program reports it cannot find your
board, or if it reports fewer boards than you really have, or if
another board starts to work improperly after you install the WB­FLASH12.

These problems indicate interference with another board using
the same base address as the WB-FLASH12 product.

Remedy the problem by changing the switches of all WB­FLASH12 boards to an address that has no conflict. (If you have
boards other than WB-FLASH12s in your system, please refer to
their operator’s manuals for instructions.)

To Set the Base Address –

-

1.

Locate

the Address Switches.

puter over the data acquisition board, and find the location of
the Base Address switches. Refer to the board illustration on
page 2 – 3 in this chapter and find “Base Address Switches”
on the WB-FLASH12 diagram.

On the printed circuit board itself, this is a block of four DIP

switches labeled “SW2.”

Remove the cover of your com-

Strawberry Tree

(NOTE: Depending the space available in your installation, it

might be necessary to remove the board to reach the Base
Address Switches. If so, please follow the same precautions as
in “Physical Installation” on page 2 – 5 in this chapter.)

2.

Change

the Setting.

sists of all four DIP switches’ being in the “up” position (when
the board is sitting in the computer’s expansion slot).

The DIP switches have the labels “1” through “4.” Sliding a

switch to the “down” position adds a value to 300H:

300H is the normal base address. It con-

WB-FLASH12 Operator’s Manual

2 – 9

WB-FLASH12 OPERATOR’S MANUAL

CAUTION

Setting the Base Address

WB-FLASH12 Base Address Switch Additive* Values –

Switch Position To 300H Add

1 Down 10H
2 Down 20H
3 Down 40H
4 Down 80H

* As the switches are additive, your sliding

Switches 1 and 4 down, for example, is going to
add 10H and 80H to the 300H, equalling 390H.

If you are having a problem with Base Address, we recom-

mend first trying 340H as an alternative to the factory setting
of 300H.

Values to Avoid –

There are several Base Address values you
need to avoid, that we know can cause interference with
other devices in some PC installations:

WB-FLASH12 Base Addresses to Avoid –

Value

320H – U U D

370H – U D D
3C0H – D D U
3F0H – D D D

* U = Up D = Down – = any position

Switch Positions*

1 2 3 4

Can Interfere With

Hard disk drive
Parallel printer

Color Monitor

Floppy disk drive

Chapter 2 Installation

2 – 10

INSTALLATION

MULTIPLE BOARDS

S

Single-Ended vs. Differential Inputs

Single-Ended vs. Differential Inputs

In the Single-Ended mode, the WB-FLASH12 has 16 analog
input channels, each of which can measure a different voltage rel­ative to ground.There are eight analog input channels available in
Differential mode; each channel can measure the difference volt­age between the positive and negative inputs.

The WB-FLASH12 is shipped from the factory in Differential
Mode. Follow the instructions below if you wish to change this.

SETTING THE

ANALOG INPUT

MODE IN DOS

IN DO

To Set the Analog Input Mode (if you are using DOS) –

1. Install the Driver Software.

both driver and application software (QuickLog PC or Work­Bench PC for Windows or DOS). The driver software resides
on both the QuickLog and the WorkBench disk, and will be
automatically installed when you run either installation pro­gram. (Please consult the appropriate software manual for
further information on installation.)

2. Run the GFIND Program.

S.” This will tell the GFIND program to show you the current
configuration of all cards in your computer.

3. Type the Board Number.

FLASH12 in your installation must be set individually.

4. Select the Analog Input Mode.

for Differential mode. To write the changes to the boards’
EEPROMs, you must type “W” after making your selection.

5. Quit the Program.

“Q” at the prompt.

The new settings will be remembered by each board until it is
reprogrammed.

When you are using multiple boards in your installation, the soft­ware automatically numbers the analog and digital input and out­put channels in a sequential order, beginning with the channels
on Board Number 1.

You may now exit the program by typing

All WB-FLASH12 boards ship with

At the DOS prompt, type “GFIND –

The Analog Input Mode for each WB-

Type “S” for Single-Ended or “D”

Strawberry Tree

For example, if you have installed two WB-FLASH12 boards,
both set in Differential mode, the software will assign Board 1
analog input channels 1 through 8 and digital I/O channels 1
through 8. Board 2 will be assigned analog input channels 9 to 16
and digital input channels 9 to 16. Because both boards are set in
Differential mode, the channel assignment is fairly straight-

WB-FLASH12 Operator’s Manual

2 – 11

WB-FLASH12 OPERATOR’S MANUAL

Single-Ended vs. Differential Inputs

foward.
If your installation includes boards that are set in different modes,

however, the channel numbering can be a bit more complicated.
The following Channel Locator Chart defines possible analog
input channel assignments in multiple (up to 3) board setups:

Channel Locator Chart –

Total # Board 1 Board 2 Board 3
Boards Diff. Single Diff. Single Diff. Single

11 to 8–––––
1–1 to 16––––
2 1 to 8 – 9 to 16 – – –
2 1 to 8 – – 9 to 24 – –
2 – 1 to 16 17 to 24 – – –
2 – 1 to 16 – 17 to 32 – –
3 1 to 8 – 9 to 16 – 17 to 24 –
3 1 to 8 – – 9 to 24 25 to 32 –
3 1 to 8 – 9 to 16 – – 17 to 32
3 1 to 8 – – 9 to 24 – 25 to 40
3 – 1 to 16 17 to 24 – 25 to 32 –
3 – 1 to 16 – 17 to 32 33 to 40 –
3 – 1 to 16 17 to 24 – – 25 to 40
3 – 1 to 16 – 17 to 32 – 33 to 48

Analog Input Channel Assignments

Chapter 2 Installation

2 – 12

TECHNICAL NOTES

General Information

Chapter 3: Technical Notes

Although operations in this chapter are seldom necessary during everyday
data acquisition, you might want to refer to them at certain times during
operation of the WB-FLASH12. They are

· Pinouts (at the board’s connectors, in the event you want to connect ana­log or digital signals directly, without using a terminal
panel; please refer to page 3–2);

· Block diagram of the WB-FLASH12 and daughterboard showing on­board processing (please see page 3–3 and 3–4);

· Triggering the WB-FLASH12 to synchronize the data acquisition activity
to some external or internal (see page 3–5 to 3–7);

· Using EDITCAL to accommodate changes to your installation, (on pages
3–8 to 3–9);

· Changing har dwar e interrupts in or der to avoid conflicts with other

· Troubleshooting: some possible problems and solutions after install-

· Specifications: complete specifications of both WB-FLASH12 models

Strawberry Tree

hardware (please see page 3–10);

ing, and during operation of the WB-FLASH12
(beginning at page 3–11);

and the optional DB03-M daughterboard (beginning
at page 3–14).

WB-FLASH12 Operator’s Manual

3 – 1

WB-FLASH12 OPERATOR’S MANUAL

Pin Assignments

Figure 3. Pinouts of the WB-FLASH-12 at Back Panel Connector –

Single-Ended / Differential Differential / Single-Ended

channel 9 / channel 1 –

channel 10 / channel 2 –
channel 11 / channel 3 –

channel 12 / channel 4 –
channel 13 / channel 5 –

channel 14 / channel 6 –
channel 15 / channel 7 –

channel 16 / channel 8 –

Analog ground

Cold junction sensor (+)

Analog Ground

Connector

Analog Ground

key notch

N/C (do not connect)

Conversion gate

Analog Output 1

– 12 Volts

2

1

4

3

6

5

8

7

10

9

12

11

14

13

16

15

18

17

20

19

22

21

24

23

26

25
27

28

29

30

31

32

channel 1 + / channel 1
channel 2 + / channel 2

channel 3 + / channel 3
channel 4 + / channel 4
channel 5 + / channel 5
channel 6 + / channel 6

channel 7 + / channel 7

channel 8 + / channel 8
Analog ground

+6.666 Volt Ultra-Stable Reference
+ 5 Volts
Analog ground

+ 12 Volts

N/C (do not connect)
Analog trigger input

Analog Output 2

(CT Gate) digital I/O 8

(CT Trig) digital I/O 7

(CT In) digital I/O 6

(CT Out) digital I/O 5

Chapter 3 Technical Notes

3 – 2

digital I/O 4
digital I/O 3
digital I/O 2

digital I/O 1

+ 5 Volts

34

33

36

35

38

37

40

39

42

41

44

43

46

45

48

47

50

49

digital ground
digital ground
digital ground

digital ground
digital ground

digital ground
digital ground
digital ground
Digital trigger input

Figure 4. Block Diagram of WB-FLASH-12 (Both Models) –

+5V, ±12V

Analog or

Digital Trigger

Reference

Voltage

Pacer

Clock

16 se or 8 diff

Analog Inputs

Amplifier

TECHNICAL NOTES

Block Diagram of WB-FLASH12

Trigger &

Trigger Counters

Real World

8 Digital

I/O Lines

MUX

I/O

Latches

Counter/

Timer

Re-Circulating

Flash Converter

Gain & Channel

Control

To Daughterboard

Memory

Buffer

Computer Bus

Sequence

RAM

Computer Bus

Interface

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WB-FLASH12 Operator’s Manual

3 – 3

WB-FLASH12 OPERATOR’S MANUAL

Block Diagram of Daughterboard

Figure 5. Block Diagram of WB-FLASH-12 Daughterboard –

RAM Bank

1024kWords

2 Analog

Outputs

12-Bit D/A

Converter

Amplifier

Real World

1 converter, amplifier, latch, and buffer (opt.) per channel

RAM Buffering

& Logic

RAM Buffering

& Logic

256k Buffer

Latch

FLASH-12 Board

Chapter 3 Technical Notes

3 – 4

Z8536
Control

TRIGGER

SOURCE

ANALOG

DIGITAL

TRIGGER

TECHNICAL NOTES

Triggering

Triggering

Triggers provide a mechanism for you to synchronize the acquisi­tion of data to some external or internal event. For example, you
might want to start the data acquisition when a digital input goes
high, or after an analog input reaches a certain value. Your WB­FLASH12 card has extensive triggering capabilities which permit
you to use the board to do these things, similar to the capabilities
of a digital sampling oscilloscope.

You may use either the analog trigger input or the digital trigger
input to trigger your WB-FLASH12 card. For each of these
inputs, the trigger can be on the rising edge or falling edge. The
following trigger source options are available:

· Analog trigger with positive slope

· Analog trigger with negative slope

· Digital trigger with positive slope

· Digital trigger with negative slope

POLARITY

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TRIGGER

TRIGGER

The analog trigger input is located on pin 30 of the connector at
the rear of your FLASH-12 card (see diagrams on page 2 – 3 and
3 – 2). If you are using the T51 terminal panel, you will find the
analog trigger input at the connection marked “C/T 3 Trig.”

The analog trigger input is a high impedance input that can be
connected to any of type of analog input. It is, however, a single­ended input referred to ground. If you are using the Differential
analog input mode, you must trigger to one side or the other of
the channel which you have chosen.

The digital trigger input is located on pin 50 of the connector at
the rear of your FLASH-12 card (see diagrams on page 2 – 3 and
3 – 2). On the T51 terminal panel, you can find the digital trigger
input at the connection marked “C/T 3 In”; the connection is
labeled “Trig” on the T21 terminal panel.

The digital trigger input is a normal TTL input.
There are two polarities of trigger available on your FLASH-12

card: positive slope and negative slope.
A positive slope trigger synchronizes the data acquisition to the

first rising edge which crosses the trigger level. With a negative
slope trigger, acquisition is synchronized to the first falling edge

WB-FLASH12 Operator’s Manual

3 – 5

WB-FLASH12 OPERATOR’S MANUAL

TRIGGER MODE

PRE/POST

Triggering

which crosses the trigger level. Examples of positive slope and
negative slope triggers are shown below:

Figure 6. Examples of Positive and Negative Slope Triggers –

Positive Slope
Trigger

Triggers can be programmed in two basic modes: Normal or
Auto. In the Normal Mode, the measurement synchronization is
not completed until the hardware trigger occurs. If the trigger
never happens, then the data acquisition is never completed.

In the Auto Mode the data acquisition is automatically self-trig­gered if a hardware trigger is not received within a certain period
of time. This time period is called the “Trigger Timeout;” your
program may adjust this time at will.

There are three ways to use triggers in your data collection pro-

TRIGGER MODE

cess: Pre-Trigger, Post-Trigger, or Pre/Post-Trigger. These modes
can be set by programming Counter/timer 1 and 2 on your WB­FLASH12 board.

Post-Trigger Mode –

only after the trigger occurs, as shown in Figure 7. To set this
mode, you simply program Counter/timer 2 with the number of
samples (variable “N”) to be taken after the trigger occurs. The
counter/timer will wait for the trigger, and then data will be col­lected until “N” samples have occurred.

DIGITAL TRIGGERANALOG TRIGGER

Negative Slope
Trigger

Positive
Slope
Trigger

In the Post-Trigger mode, data is collected

Negative
Slope
Trigger

Chapter 3 Technical Notes

3 – 6

Pre-T rigger Mode –

If you set your board in Pre-Trigger mode, data
is collected only before the trigger occurs, as shown in Figure 8.
To set this mode, you must program Counter/timer 1 with the
number of samples (variable “M”) to be taken before the trigger
occurs. Because the exact moment of the trigger is unknown, the
counter/timer will collect “points” until the trigger occurs. Then
when the trigger is activated, the counter/timer will count back
the last “M” points and save them as samples. All other points are
then discarded.

Pre/Post-T rigger Mode –

Data is collected both before and after the
trigger in the Pre/Post-Trigger mode (see Figure 9). Both counter
timers 1 and 2 must be used to count the number of samples.

TECHNICAL NOTES

Triggering

Counter timer 1 is programmed with the number of samples
before the trigger (the variable “M”), while counter timer 2 is pro­grammed with the number of samples (variable “N”) after the
trigger.

Figure 7. Post-Trigger Mode

Trigger

Level

4

1 2 3 N

N Samples Total

Figure 8. Pre-Trigger Mode

Trigger

Level

Strawberry Tree

1 2 3 M

4

Discarded Samples

Figure 9. Pre/Post-Trigger Mode

Trigger

Level

1 2 3 M

4

M Samples Before

M Samples Total

1 2 3 N

4

N Samples After

WB-FLASH12 Operator’s Manual

3 – 7

WB-FLASH12 OPERATOR’S MANUAL

EDITING

THERMOCOUPLES

STARTING EDITCAL

Using EDITCAL

Using EDITCAL

Your WB-FLASH12 uses an exclusive calibration technology to
achieve great stability, requiring no adjustment for years. (As a
reflection of this, we guarantee the factory tolerances for two years
from the date of purchase.)

Instead of employing adjustment potentiometers to calibrate the
boards, our technicians test and calibrate each WB-FLASH12 after
assembly. That board’s unique calibration number values reside
on-board, in Electrically Erasable Programmable Read Only Mem­ory – EEPROM – chips.

Though recalibration is seldom necessary (and not recommended

CALIBRATION VALUES

unless you have the proper equipment), it may be necessary to
edit calibration numbers to accommodate other changes in your
data acquisition setup. For DOS users, EDITCAL.EXE (or EDIT­CAL for short) is the utility program that simplifies the modification
of these values. (EDITCAL can be found on the QuickLog PC disk.)

IN DOS

Thermocouple Terminal Panel Calibration –

for thermocouples have thermal isolation blocks and factory cali­bration for accurate measurements, as the CCAL number on the
label on the panel. CCAL is the value controlling the cold junc­tion compensation temperature.

If you change from one isothermal terminal panel to another , even
if they are the same model number , it might be necessary to enter
a new calibration number (CCAL). Check the calibration value on
the two panels’ labels. If they differ (which is likely), use EDIT­CAL to change the appropriate value to the new figure.

Similarly, if you are experiencing inaccurate measurements with a
thermocouple, you can use EDITCAL to adjust the CCAL up or
down until the temperature the board reports is correct. (Increas­ing the CCAL figure by 75 points increases the temperature read­ing by approximately 1° C.)

For more information, please refer to your terminal panel manual.

Make sure the EDITCAL.EXE program file is in the same sub­directory as the OMEGA Engineering, Inc. application programs.
Load the EDITCAL.EXE program from the keyboard:

Terminal panels suitable

Chapter 3 Technical Notes

3 – 8

TECHNICAL NOTES

EDITCAL

Using EDITCAL

SELECTIONS

To Start Up EDITCAL.EXE –

1.

At the DOS prompt, enter EDITCAL, then press the [ENTER]
key. (This invokes the utility.)

EDITCAL Main Menu –

EDITCAL

CALIBRATION UTILITIES

This program allows for the creation or modification of
calibration data files or hardware EEPROM data on analog
and digital boards. You may create and merge existing
CALIB.DAT or CALOUT.DAT files for multiple boards. You may
update an existing calibration file to add, delete or modify
data. Or you may view or modify EEPROM data or boards.

Do you want to work with calibration data files, view/edit
EEPROM on Analog Connection, highspeed or DATAshuttle boards?

→

use and keys to choose then press ENTER

DATA FILES AC EEPROM HS EEPROM DS EEPROM QUIT

Press the F1 Key at anytime for online help

To Select a Function –

1.

Use the arrow keys to navigate among these menu selections:

→

DATA FILES To merge calibration files supplied from the factory

into a single file for systems that have multiple boards,
or to update existing calibration files.

AC EEPROM To view or modify calibration data on Analog Connec-

tion boards that have non-volatile on-boar d EEPROMS.

HS EEPROMS To view or modify calibration data on high speed

boards EEPROM, such as WB-WORKMATE or WB­FLASH12.

DS EEPROMS To view or modify calibration data on DATAshut-

tles’ EEPROM.

QUIT Ends this EDITCAL session.

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2.

Move the arrow keys until the selection you want is flashing.

3.

Press [ENTER].

WB-FLASH12 Operator’s Manual

3 – 9

WB-FLASH12 OPERATOR’S MANUAL

Changing Hardware Interrupts

Changing Hardware Interrupts

For users of programs such as WorkBench PC for Windows that
employ hardware interrupts, the WB-FLASH12 board provides
for changing the interrupt number, if necessary.

OMEGA Engineering, Inc. customers using DOS have no require­ment for this feature, and do not have to change hardware inter­rupts.

The illustration of the WB-FLASH12 on page 2 – 3 in Chapter 2
identifies the jumper block. (It is labeled as “interrupt jumpers.”)

By repositioning the jumper, which is a plug, to another socket
on the block, you can select another of these interrupts: IRQ2,
IRQ4, IRQ5, IRQ6, or IRQ7.

(Remember that on AT computers the IRQ2 selection is actually
the IRQ9 line.)

Chapter 3 Technical Notes

3 – 10

TECHNICAL NOTES

Troubleshooting

Troubleshooting: Installation

If you experience difficulty in getting your data acquisition board
up and running, please check to see that the installation is
according to the descriptions in Chapter 2.

If the software reports a board failure, or that it cannot find a
board, then try these remedies:

1. Confirm that the board is seated properly

(reseat it, if necessary; see the illustration on page 2 – 3).

2. Verify the Board Number switch

2 – 9).

is not set to “0.” (Refer to page

in the PC expansion slot

3. Use a different Base Address.

your installation is trying to use the same Base Address
(please see the explanation on page 2 – 11).

It is possible that another device in

4. If there is more than one OMEGA data acquisition board in your instal­lation

, make sure they all have the same Base Address, but dif-

ferent Board Numbers.

5. Install the board in another open slot

tions on page 2 – 5).

6. Remove other devices

whether or not they are conflicting with your data acquisition
board.

from expansion slots in your PC to check

7. If possible, install the board in another computer

operation.

8. Verify that the software is up to date

the board you are using. Contact us, or your software pro­vider).

9. Remove other terminate and stay resident (TSR)

your system’s AUTOEXEC.BAT file, temporarily.

10. Replace the Z8536 chip

our Technical Services department for testing.

(Please call our Technical Support line before returning a board – we
hope to assist you with your problem via telephone.)

on the board, or return the product to

in the PC (follow the instruc-

to verify its correct

(a version compatible with

programs from

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WB-FLASH12 Operator’s Manual

3 – 11

WB-FLASH12 OPERATOR’S MANUAL

HINTS

OPERATING

Troubleshooting

Troubleshooting: Operation

During operation, it’s good practice to short all analog input
channels you’re not using; to do this, connect + to – to Com.

It’s essential to have exactly one ground reference per channel.
This single connection to ground makes sure you don’t exceed
the common mode range of input.

(More than one connection per channel can lead to ground loops,
causing errors or erratic readings. Connecting the – to the Com
terminal provides a single ground. Your sensor might also pro­vide another ground. If you’re not sure that your sensor is
grounded, try connecting the – to Com, and not, and see which
works best.)

Here are mini “case studies” of difficulties, along with some easy

Qs AND As

solutions:

Problem: I read a voltage with my multimeter at the analog input termi-

nals, with nothing connected.

Action:

None. Any voltage between – 12V and + 12V is possible,

when nothing is connected.

Problem: My board reads analog input wrong.

Try shorting + to – to Com: the board should return a

Action:

reading around 0V.

Chapter 3 Technical Notes

3 – 12

Problem: My board reads the thermocouple as a very negative tempera-

ture.

Verify the connections are secure. Opens read as negative

Action:

temperature.

Problem: My board reads thermocouple input wrong.

Using EDITCAL, confirm that the CCAL number matches

Action:

the number on the terminal panel’s calibration label (see
pages 3–8 through 3–9).

(If you need to use a general purpose terminal panel – one
that doesn’t have a factory CCAL number – with a ther­mocouple, you can achieve approximate results by enter­ing a CCAL of 2300. Then change the figure by about 75
points for each degree C. that you want to raise the tem­perature.)

IF YOU NEED

CUSTOMER SUPPORT

TECHNICAL NOTES

Troubleshooting

Problem: My board used to work, but now the software cannot find it, or

reports an error.

Action:

Check to make sure the Board Number switch is not set to

“0.”

What to do before calling technical support, to help us serve you better:

Have the part numbers of your boards and terminal panels

1.

ready.

2.

Have the type and version number of the software you’re

using.

3.

Have your computer’s type, model, and the version of the

operating system.

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WB-FLASH12 Operator’s Manual

3 – 13

WB-FLASH12 OPERATOR’S MANUAL

ANALOG INPUT

ACCURACY

Product Specifications

Specifications of the WB-FLASH12

The WB-FLASH12 has 16 available analog inputs when set to sin­gle-ended mode; eight analog inputs are available in differential
mode. (See page 2–13 for instructions on setting the Analog Input

Mode.)

Analog Input Memory –

board (DB03-M), the WB-FLASH12 features analog input memo­ry of up to one million samples.

WB-FLASH12* GENERAL CONDITIONS ACCURACY –

When installed with the optional daughter-

Unipolar Full

Scale Range

†

Bipolar Full

Scale Range

†

Resolution

Accuracy

(% of full scale)

N/A ± 10V 4.88mV ± 4mV (.02%)

0 to 10V ± 5V 2.44mV ±5mV(.05%)

0 to 5V ± 2.5V 1.22mV ± 2.5mV (.05%)

0 to 2 V ± 1V 488µV ± 1mV (.05%)

0 to 1V ± 500mV 244µV ± 0.75mV (.075%)

VOLTAGE

0 to 500mV ± 250mV 122µV ± 0.375mV (.075%)
0 to 200mV ± 100mV 48.8µV ± 0.2mV (.1%)
0 to 100mV ± 50mV 24.4µV ± 0.1mV (.1%)

*The WB-FLASH12 Model 2 only supports the Bipolar Range

±5V.

†

Due to automatic calibration, actual maximum and minimum

voltage can be 1.5% above or below the stated value.

General Conditions –

12-bit (0.024%) resolution, after automatic
self-calibration. From 15°C to 35°C at the interface board. Source
resistance less than 1k Ohms. Includes linearity, drift, offset, and
calibration errors.

WB-FLASH12 RTD ACCURACY –

W e do not r ecommend using the WB-FLASH12 for R TD or strain
gauge measurements. The reference voltage does not supply
enough current to accurately support these type of measure­ments.

Chapter 3 Technical Notes

3 – 14

TECHNICAL NOTES

Product Specifications

WB-FLASH12 THERMOCOUPLE ACCURACY –

Type Range (°C.)

-100 to 880 0.6 0.15 ± 3

J

12-Bit

Resolution (°C)

-210 to -100 1.0 0.25 ± 6

K

-75 to 1370 0.6 0.15 ± 3

-260 to -75 0.8 to 8 0.2 to 2 ± 4 to 35
0 to 1000 0.4 0.1 ± 2.5

E

-200 to 0 0.5 to 1 0.125 to 0.25 ± 5

-270 to -200 1 to 6 0.25 to 1.5 ± 5 to 30
0 to 400 0.6 0.15 ± 3

T

-200 to 0 0.6 to 1 0.15 to 0.25 ± 3 to 6

-270 to -200 1 to 6 0.25 to 1.5 ± 6 to 30

S

0 to 300 3 to 5 0.75 to 1.25 20

300 to 1770 2 to 3 0.5 to 0.75 12

R

0 to 200 3 to 5 0.75 to 1.25 20

200 to 1770 2 to 3 0.5 to 0.75 12

200 to 400 6 to 12 1.5 to 3.0 50

B

400 to 800 3 to 6 0.75 to 1.5 25

800 to 1820 2 to 3 0.5 to 0.75 13

G

25 to 200 3 to 12 0.75 to 3 50

200 to 2315 2 to 3 0.5 to 0.75 15

D

-20 to 2315 1.7 to 3 0.4 to 0.75 12

C

-20 to 2315 1.5 to 3 0.38 to 0.75 12

N

-100 to 200 0.8 to 1.3 0.2 to 0.3 ± 5
200 to 1300 0.8 0.2 ± 3

14-Bit

Resolution (•C)

Accuracy

(°C.)

Strawberry Tree

Thermocouple Conditions –

Same as General Conditions. Does not
include the accuracy of the thermocouple itself (cold junction
error must be added in; cold junction compensation with T21
terminal panel only; please see your terminal panel manual’s
specifications for cold junction compensation error). Accuracy is
approximate because resolution varies with temperature.

Thermocouples use the 50 mV range. For inputs below -5 mV
(below approximately -100 degrees C.) use the +/-25 mV range.
For the best resolution use the 50 mV range above -5 mV.

WB-FLASH12 Operator’s Manual

3 – 15

WB-FLASH12 OPERATOR’S MANUAL

INPUT IMPEDANCE

NOISE REJECTION

COMMON MODE RANGE

INPUT PROTECTION

RESOLUTION/

Product Specifications

All analog inputs have an impedance rating of >100gΩ.

CMRR –

Conditions for Common Mode Rejection Ratio (CMRR):
DC to 1k Hz, common mode input. This specification applies
even when one or more nonmeasured channels exceeds the oper­ating common mode range.

SCAN RATE

WB-FLASH12 NOISE REJECTION –

Unipolar

Range

Bipolar

Range

CMRR

Typical Internal Noise

(RMS)

N/A ± 10V > 86 dB 5 mV

0 to 10V ± 5V > 86 dB 2.5 mV

0 to 5V ± 2.5V > 86 dB 1.25 mV

0 to 2 V ± 1V > 86 dB 1.25 mV

0 to 1V ± 500mV > 92 dB 600 µV
0 to 500mV ± 250mV > 98 dB 300 µV
0 to 200mV ± 100mV > 98 dB 300 µV
0 to 100mV ± 50mV > 98 dB 300 µV

No input may exceed ± 10.5 Volts.

Operating –
Nonoperating –

± 30 Volts, maximum.

± 20 Volts, maximum.

Selectable in software:

WB-FLASH12 RESOLUTION AND SCAN RATE* –

Model 1 Scan Rate Model 2 Scan Rate

Resolution

Single

Channel

Multiple

Channels

†

Single

Channel

Multiple

Channels

†

Chapter 3 Technical Notes

3 – 16

14 bits: 0.006% 250 kHz 250 kHz 62.5 kHz 400 kHz
13 bits: 0.012% 500 kHz 500 kHz 250 kHz 100 kHz
12 bits: 0.024% 1 MHz 1 MHz 1 MHz 25 kHz

* Burst mode. Rate with continuous sampling will be lower.
† Divide this rate by the number of channels in use.
NOTE: For the Model 1 boards, multiple scan rate can differ

according to the range in use. See table on next page.

TECHNICAL NOTES

DIGITAL I/O

COUNTER/TIMER

TRIGGER INPUT

Product Specifications

CHANNELS

Scan Rate –

Scan rate is the rate in Hertz (or, samples per second)
to read data into memory, including the time it takes to switch
channels and ranges. To calculate the total scan time for all chan­nels, divide the rate by the number of channels.
(After placing a burst of data into memory, and depending on
your computer and software, the system requires additional pro­cessing time before the data are available to you, or before you
can collect more data.)

WB-FLASH12 MODEL 1 SCAN RATE* BY RANGE –

Unipolar

Range

Bipolar

Range

Multi-Channel

Scan Rate

N/A ±10V 1 MHz

0 to 10V ±5V 1 MHz

0 to 5V ±2.5V 750 kHz

0 to 2 V ±1V 600 kHz

0 to 1V ±500mV 750 kHz
0 to 500mV ±250mV 1 MHz
0 to 200mV ±100mV 1 MHz
0 to 100mV ±50mV 1 MHz

* Fixed range. When range is changed, rate can be as low as

400kHz on 1V/—500mV or smaller ranges. Divide the rate by 4
for 13-bit resolution, by 16 for 14-bit. Scan rate settle to .25%.

The WB-FLASH12 has 8 digital I/O lines, with each line individ­ually selectable as input or output. Inputs are 5 Volt TTL-compat­ible.

Strawberry Tree

Their outputs are also 5 Volt TTL-compatible, or high voltage
open collector on the terminal panel.

(Please see the specifications in your terminal panel owner’s manual.)

The WB-FLASH12 has one on-board 16-bit counter/timer with a
2 MHz internal clock. The counter timer is connected to Digital I/
O lines 5 through 8.

The WB-FLASH12 has one digital trigger input, positive or nega­tive slope, TTL-compatible.

The analog trigger input, positive or negative slope, features a
trigger range of -10 to 10V in 256 steps.

WB-FLASH12 Operator’s Manual

3 – 17

WB-FLASH12 OPERATOR’S MANUAL

ANALOG OUTPUT

PHYSICAL

PHYSICAL

GENERAL

Product Specifications

When installed with the optional daughterboard (DB03-M) the
WB-FLASH12 features two analog outputs. The daughterboard
comes equipped with a dual 256K analog output buffer.

DB03-M ANALOG OUTPUT RANGES/ACCURACY –

Full Scale

Range

Voltage

Resolution

Accuracy

(% of full scale)

0 to 10V 2.44mV ± 3mV(.03%)

± 10V 2.44mV ± 6mV (.03%)

0 to 5V 1.22mV ± 3.5mV (.07%)

± 5V 1.22mV ± 7mV (.07%)

VOLTAGE

± 2.5V 666µV ± 5mV (.10%)

General Conditions –

12-bit (0.024%) resolution. Includes linearity,

offset, and initial calibration.

Speed –

1 MHz analog output rate using output memory buffer

(not supported by all software); 10 to 90% Rise Time, 3µs.

Output Protection –

May be shorted to any voltage between -12V

and 12V.

Output Impedance –
Output Current –

<0.5Ω.

±5mA minimum.

Stability of the Analog Outputs–

· Response time to 0.1% accuracy:
<8µs, 10V step
<3µs, 1% of full scale step

· Temperature drift: <0.004% per degree Celsius, maximum.

DIMENSIONS

DIMENSIONS

CONDITIONS

Chapter 3 Technical Notes

3 – 18

The WB-FLASH12 is a full-size PC board measuring 13.0" by

4.2" (33.0cm by 10.7cm).
The optional daughterboard (DB03-M) measures 7.6" by 3.9"

(19.3cm by 9.9cm).

Auxiliary Power Output –

+5v, +12V, or -12V, direct from the com-

puter’s power supply, unfused. It is not to exceed 1A.

Reference Voltage Output –
Operating Temperature Ambient –

6.667V, ±1%; 1kΩ output impedance.
0 to 50 degrees Celsius.

TECHNICAL NOTES

Typical Current Consumption –

WB-FLASH12 Setup + 5V + 12V - 12V

No Daughterboard 1,200 mA 150 mA 150 mA

With DBO3-M* 1,400 mA 250 mA 175 mA

* No load on analog outputs.

Product Specifications

Strawberry Tree

WB-FLASH12 Operator’s Manual

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WB-FLASH12 OPERATOR’S MANUAL

Chapter 3 Technical Notes

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