Frequency Devices 9002 Manuale utente

25 Locust St, Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX: 978/521-1839

e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com

Model 9002

September 1999



Dual-Channel Programmable Filter Instrument

OPERATOR MANUAL -Certified

25 Locust St, Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX: 978/521-1839

e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com

Model 9002

25 Locust St, Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX: 978/521-1839

e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com

Section . . . . . . . . . . . . . . . . . . . . . . . . . . .Page

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Warranty & Repair . . . . . . . . . . . . . . . . . . . . . .2

Section 1 - Introduction

1.1 Device Description . . . . . . . . . . . . . . . . . . . . .3

1.2 Applications . . . . . . . . . . . . . . . . . . . . . . . . . .3

1.3 System Interconnection . . . . . . . . . . . . . . . . . .3

Section 2 - Instrument Description

2.1 Front and Rear Panel Controls . . . . . . . . . . . .5

2.2 Input/Output Characteristics . . . . . . . . . . . . . .5

2.3 Filter Properties . . . . . . . . . . . . . . . . . . . . . . . .6

2.4 Specifications . . . . . . . . . . . . . . . . . . . . . . . . .7

2.4.1 Electrical . . . . . . . . . . . . . . . . . . . . . . .7

2.4.2 Physical . . . . . . . . . . . . . . . . . . . . . . . .8

2.4.3 Environmental . . . . . . . . . . . . . . . . . . .8

Section 3 - Installation and Setup

3.1 Unpacking and Inspection . . . . . . . . . . . . . . . .9

3.2 Packaging for Shipment . . . . . . . . . . . . . . . . .9

3.3 Environmental Requirements . . . . . . . . . . . . .10

3.4 Line Voltage . . . . . . . . . . . . . . . . . . . . . . . . .10

3.4.1 System Grounds . . . . . . . . . . . . . . . .12

3.5 Basic Setup . . . . . . . . . . . . . . . . . . . . . . . . . .12

Section 4 - Operation from the Front Panel

4.1 Front Panel Description . . . . . . . . . . . . . . . . .13

4.2 Indicator LED’s . . . . . . . . . . . . . . . . . . . . . . .13

4.3 Function Keys . . . . . . . . . . . . . . . . . . . . . . . .13

4.3.1 Details of the Function Keys . . . . . . . .14

Model 9002

Table of Contents

Section . . . . . . . . . . . . . . . . . . . . . . . . . . .Page

Section 5 - Remote Control Operation

5.1 The Control Method . . . . . . . . . . . . . . . . . . . .19

5.2 Programming Rules . . . . . . . . . . . . . . . . . . . .19

5.2.1 Listen/Talk Structure . . . . . . . . . . . . . .20

5.3 Key-Push Commands . . . . . . . . . . . . . . . . . .20

5.4 Special Command Codes . . . . . . . . . . . . . . .21

5.4.1 Use of Special Code $05,

Abort to Local . . . . . . . . . . . . . . . . . .21

5.4.2 Use of Special Code $06, Set Filter . .22

5.4.2.1 The Code $06 Command Setup . . . . .22

5.4.2.2 Calculating Program Parameters . . . .23

5.4.2.3 Example of a Code $06

Command Setup . . . . . . . . . . . . . . . .26

5.4.3 Code $0B - Go to Channel N,

Filter M . . . . . . . . . . . . . . . . . . . . . . .29

5.4.4 Code $0C - Send Back Channel

Status . . . . . . . . . . . . . . . . . . . . . . . .30

5.4.5 Code $0D - Send Back Channel

Definition . . . . . . . . . . . . . . . . . . . . . .31

5.4.6 Code $0E - Send Back Clip Status . . .32

5.4.7 Code $0F - Go to Remote Control . . .33

5.5 Example of a Remote Control Program . . . . .33

Appendix A - Product Data a Sheet

Appendix B - Binary/Decimal/Hex Review

B-1 Decimal to Binary . . . . . . . . . . . . . . . . . . . . .35

B-2 Binary to Hex . . . . . . . . . . . . . . . . . . . . . . . .36

B-3 Decimal to Hex . . . . . . . . . . . . . . . . . . . . . . .37

Appendix C - Remote Control Programs

C-1 Program 1 . . . . . . . . . . . . . . . . . . . . . . . . . . .38

C-2 Program 2 . . . . . . . . . . . . . . . . . . . . . . . . . . .39

Table of Contents

25 Locust St, Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX: 978/521-1839

e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com

Model 9002

Figures and Table

List of Figures

Figure . . . . . . . . . . . . . . . . . . . . . . . . . . .Page

1.1 Model 9002 in a Typical Setup . . . . . . . . . . . . .4

2.1a Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . .5

2.1b Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . .5

2.2 IEEE Connector Identification . . . . . . . . . . . . .6

3.1 Changing the Line Voltage . . . . . . . . . . . . . . .10

4.1 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . .14

List of Tables

Table . . . . . . . . . . . . . . . . . . . . . . . . . . .Page

2.1 Electrical Characteristics of Filters . . . . . . . . . .7

4.1 Explanation of LED indicators . . . . . . . . . . . .13

4.2 Explanation of Function Keys . . . . . . . . . . . .13

4.3 Filter Type and Characteristics . . . . . . . . . . .15

4.4 Frequency Ranges and Increments . . . . . . . .17

5.1 Codes for Function Keys . . . . . . . . . . . . . . . .20

5.2 Codes for Numeric Keypad . . . . . . . . . . . . . .21

5.3 Special Codes . . . . . . . . . . . . . . . . . . . . . . . .21

5.4 Parameters Programmed with Codes $06 . . .22

5.5 Filter Configuration Codes . . . . . . . . . . . . . . .22

5.6 The $06 Command Setup List . . . . . . . . . . . .23

5.7 Calculation of R . . . . . . . . . . . . . . . . . . . . . . .23

5.8 Range Selection Table . . . . . . . . . . . . . . . . . .24

5.9 Gain in Various Numerical Bases . . . . . . . . . .26

5.10 Development of Codes for the Sample

Configuration . . . . . . . . . . . . . . . . . . . . . . . . .28

5.11 Hex Codes of Filters . . . . . . . . . . . . . . . . . . .31

5.12 Channel Definition Data Sent Back . . . . . . . .32

5.13 Clip Status Definition Data Sent Back . . . . . .32

B.1 Binary to Hex Conversion . . . . . . . . . . . . . . .36

B.2 Conversion of 8-bit . . . . . . . . . . . . . . . . . . . .36

B.3 Decimal to Hex . . . . . . . . . . . . . . . . . . . . . . .37

Figures and Tables

25 Locust St, Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX: 978/521-1839

e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com

Model 9002

Preface

The Frequency Devices, Inc. Model 9002 is a Dual Channel, Programmable Lowpass or Highpass active, electronic

filter. It represents state-of-the art filter modeling, utility, flexibility and ease of programming, either from the front

panel or by a remote controller. Users can select from a total of four lowpass and two highpass filter models.

The system can be internally programmed for eight different filters in each channel. The unit operates over a wide

range of frequencies and provides the finest resolution for a given input frequency. Filter types for each channel are

specified at time of purchase. Remote operation of the Model 9002 is accomplished through a controller equipped

with an IEEE-488 interface.

This manual contains installation, operation, programming and troubleshooting information about the Model 9002.

Although operation of the Model 9002 is quite straightforward, you must read and understand the information in this

manual before applying power or connecting any components or external devices.

Warranty information is given on the following page, Improper use of the instrument may void the warranty, so

please use this manual as an instruction guide at all times.

We at Frequency Devices, Inc. are pleased that you have selected our product for your research and development

applications. Should you have any questions or problems, do not hesitate to contact your local Frequency Devices,

Inc. representative for prompt assistance.

Each section of this manual begins with a table of contents and a brief discussion. This will help you access the

information you need as quickly as possible. The instruction and associated information for the Model 9002 are

presented as follows:

Section 1 - Introduction

Contains general descriptive information about the Models 9002, including applications information.

Section 2 - Description

Provides physical and technical specifications and control details.

Section 3 - Installation

Provides step-by-step instructions for unpacking, installation and setup.

Section 4 - Front Panel Operations

Item-by-item presentation of local operation from the front panel.

Section 5 - Remote Control Operations

System programming and operating via a remote controller.

Appendices

The Appendices provide you with additional technical and reference information for advanced operations, as well as

examples of remote operation programs.

25 Locust St, Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX: 978/521-1839

e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com

Model 9002

Warranty & Repair

Warranty

The Model 9002 Instrument is warranted against defects in material and workmanship for a period of one (1) year

from the date of shipment. During the warranty period, Frequency Devices Inc. will, at its option, repair or replace

products that prove to be defective.

For warranty service or repair, all products must be returned to Frequency Devices Inc. after obtaining a return

authorization (RA) number from the factory. Frequency Devices Inc. will pay the shipping charges from and to the

Buyer, except for products returned to FDI from another country. In this case the Buyer shall be responsible for all

shipping charges, duties, and taxes.

Limited Warranty

This warranty shall not apply to defects that are the results of improper use, unauthorized modification or repair, or

improper installation or maintenance.

No other warranty is expressed or implied. Frequency Devices, Inc. specifically disclaims the implied warranties of

merchantability and fitness for a particular purpose.

The remedies provided herein are the Buyer’s sole and exclusive remedies. Frequency Devices Inc. shall not be

liable for any direct, indirect, special, incidental, or consequential damages, whether based on contract, tort, or any

other legal theory.

Certification

Frequency Devices Inc. certifies that this product met its published specification at the time of shipment from the

factory. Frequency Devices, Inc. further certifies that its calibration measurements are traceable to the United States

national Bureau of Standards, to the extent allowed by the bureau’s calibration facility, and to the calibration facilities

of other International Standards Organization member.

Repair

Frequency Devices, Inc. maintains a repair facility at its factory in Haverhill, Massachusetts which is available for

both in-warranty and non-warranty repair. We suggest that you contact your local FDI representative before taking

steps to return equipment for repair.

Return Authorization

All products being returned to Frequency Devices, Inc. must have a Return Authorization (RA) number. This number

may be obtained by calling Frequency Devices, Inc. before returning the product.

The RA number should be clearly displayed on the outside of the package being returned and should be placed on

all correspondence concerning the instrument.

Frequency Devices, Inc. may refuse to accept shipment and will not be responsible for shipping charges of product

returned without an RA number.

25 Locust St, Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX: 978/521-1839

e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com

Section 1

Model 9002

Introduction

Section 1

Introduction

1.1 - Device Description

This system is intended for use as an electronic filter for applications in the Hertz to hundred of kiloHertz range. It can

exhibit either highpass or lowpass characteristics and simulates any two of six possible mathematical configurations:

The filter type in each channel is selected at time of purchase and is installed at the factory. If changing of the filter

type is desired, contact your local FDI representative.

The two channels in the unit are entirely independent. They can by externally interconnected to create a bandpass

filter with adjustable upper and lower cutoff points. The unit is voltage protected at the input up to 100 V and current

limited at the output to 100 mA.

Each channel can be programmed to eight separate configurations, becoming eight distinct filters. The programming

can be done at the front panel or via an IEEE-488 interface to a remote controller. The configurations are stored in

nonvolatile memory for recall or change at any time.

1.2 - Applications

The Model 9002 filter can be used in any application where frequency filtration is required. A wide range of frequen-

cies, input voltage ranges, and pre- and post-amplification stages enables these filters to interconnect with most

laboratory equipment as well as standard audio and radio frequency test equipment. Since the filter characteristics

can be precisely defined, the Model 9002 is an excellent development instrument for perfecting filter spectra in

analytic, electronic, biomedical, and physics applications.

1.3 - System Interconnection

The Model 9002 may be considered to be two, independent electronic frequency filters with either highpass or

lowpass properties. The channels may be cascaded to produce a bandpass filter. Use of the filter is the same as

any R-L-C filter network, with the following exceptions:

1. Your signal source is not loaded by the filter.

2. The output has a fixed, 50 ohm resistive impedance.

3. Signal levels can be controlled at the input and output by means of built-in

variable gain operational amplifiers.

Lowpass: Butterworth, Elliptic, Bessel, Constant Delay

Highpass: Butterworth, Elliptic

25 Locust St, Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX: 978/521-1839

e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com

Section 1

Connection of the filter with your system is straightforward; a typical setup is shown in Figure 1.1, below.

Figure 1.1 Model 9002 in a Typical Setup

When operating the filter with a remote controller, care must be taken to follow the programming rules presented in

Section 5 of this manual. In the remote mode, the unit looks at the IEEE-488 bus for its operating commands.

Control of the filters is switched to and from the front panel by depressing a single function key on the panel or by

the appropriate controller commands.

Model 9002

Introduction

Remote Controller

PC< >488

Rear Panel

FDI

Model 9002

Front Panel

Input Output

Signal

Conditioner

Signal

Conditioner

Digitizer

Sensor 1

Sensor 2 Data Out 2

Data Out 1

IEEE-488

25 Locust St, Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX: 978/521-1839

e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com

Section 2

Model 9002

Instrument Description

Section 2

Instrument Description

2.1 - Front and Rear Panel Controls

Control and system I/O is accomplished on the front panel of the system. In the remote mode, control is transferred

to an interconnected controller. Figures 2.1a and 2.1b show the front and rear panels, respectively.

Upper Figure 2.1a Front Panel Lower Figure 2.1b Rear Panel

2.2 - Input/Output Characteristics

The Model 9002 is contained in a single electronic chassis and is designed to interface directly with a remote

controller fitted with an IEEE-488 interface card. Connection to the controller is via an IEEE connector on the rear

panel as shown in Figure 2.1b. A standard IEEE connector with appropriate callouts is shown in Figure 2.2.

25 Locust St, Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX: 978/521-1839

e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com

Section 2

Figure 2.2 IEEE Connector Identification

The signals to be filtered are introduced to the Model 9002 via front and rear panel coaxial BNC connectors as seen

in Figure 2.1a. Input impedance is one megohm resistive shunted by a fixed 47 picofarad capacitance. Signal inputs

can be up to 20 volts p-p without clipping.

The filtered outputs are also supplied a BNCs on the front and rear panels. The output amplifiers are protected by

current limiting resistors. Outputs take on the same AC or DC coupling as the inputs, though output signal levels can

be independently adjusted.

Inputs are operator programmable by either single-ended or differential input, and may be either AC or DC coupled.

The input is overload protected via diode clamping to the power supply.

Precise circuit configurations for both input and output are given in the Product Data Sheet (Appendix A).

2.3 - Filter Properties

The Model 9002 is configured with two standard filters that are specified at the time of ordering. These filters are

chosen from the six models available, ten lowpass and five highpass. Table 2.1 lists the filter models available:

Model 9002

Instrument Description

Pin Definition Pin Definition Pin Definition

1 D101 5 EOI 12 Shield-Chassis Ground

2 D102 17 REN 18 P/O Twisted Pair with Pin 6

3 D103 6 DAV 19 P/O Twisted Pair with Pin 7

4 D104 7 NRFD 20 P/O Twisted Pair with Pin 8

13 D105 8 NDAC 21 P/O Twisted Pair with Pin 9

14 D106 9 IFC 22 P/O Twisted Pair with Pin 10

15 D107 10 SRQ 23 P/O Twisted Pair with Pin 11

16 D108 11 ATN 24 Isolated Digital Ground

Indice

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