Teledyne 2000A-EU User manual

i

Thermal Conductivity Analyzer

Teledyne Analytical Instruments

OPERATING INSTRUCTIONS FOR

Model 2000A-EU

Thermal Conductivity Analyzer

HIGHLY TOXIC AND OR FLAMMABLE LIQUIDS OR GASES MAY BE PRESENT IN THIS MONITORING

SYSTEM.

PERSONAL PROTECTIVE EQUIPMENT MAY BE REQUIRED WHEN SERVICING THIS SYSTEM.

HAZARDOUS VOLTAGES EXIST ON CERTAIN COMPONENTS INTERNALLY WHICH MAY PERSIST

FOR A TIME EVEN AFTER THE POWER IS TURNED OFF AND DISCONNECTED.

ONLY AUTHORIZED PERSONNEL SHOULD CONDUCT MAINTENANCE AND/OR SERVICING. BEFORE

CONDUCTING ANY MAINTENANCE OR SERVICING CONSULT WITH AUTHORIZED SUPERVISOR/

MANAGER.

DANGER

P/N M66182

07/22/05

ECO # 05-0131

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Model 2000A-EU

scribed, stored in a retrieval system, or translated into any other language or computer

language in whole or in part, in any form or by any means, whether it be electronic,

mechanical, magnetic, optical, manual, or otherwise, without the prior written consent of

Teledyne Analytical Instruments, 16830 Chestnut Street, City of Industry, CA 91749-1580.

Warranty

This equipment is sold subject to the mutual agreement that it is warranted by us free

from defects of material and of construction, and that our liability shall be limited to

replacing or repairing at our factory (without charge, except for transportation), or at

customer plant at our option, any material or construction in which defects become

apparent within one year from the date of shipment, except in cases where quotations or

acknowledgements provide for a shorter period. Components manufactured by others bear

the warranty of their manufacturer. This warranty does not cover defects caused by wear,

accident, misuse, neglect or repairs other than those performed by Teledyne or an autho-

rized service center. We assume no liability for direct or indirect damages of any kind and

the purchaser by the acceptance of the equipment will assume all liability for any damage

which may result from its use or misuse.

We reserve the right to employ any suitable material in the manufacture of our

apparatus, and to make any alterations in the dimensions, shape or weight of any parts, in

so far as such alterations do not adversely affect our warranty.

Important Notice

This instrument provides measurement readings to its user, and serves as a tool by

which valuable data can be gathered. The information provided by the instrument may

assist the user in eliminating potential hazards caused by his process; however, it is

essential that all personnel involved in the use of the instrument or its interface, with the

process being measured, be properly trained in the process itself, as well as all instrumenta-

tion related to it.

The safety of personnel is ultimately the responsibility of those who control process

conditions. While this instrument may be able to provide early warning of imminent danger,

it has no control over process conditions, and it can be misused. In particular, any alarm or

control systems installed must be tested and understood, both as to how they operate and

as to how they can be defeated. Any safeguards required such as locks, labels, or redun-

dancy, must be provided by the user or specifically requested of Teledyne at the time the

order is placed.

Therefore, the purchaser must be aware of the hazardous process conditions. The

purchaser is responsible for the training of personnel, for providing hazard warning

methods and instrumentation per the appropriate standards, and for ensuring that hazard

warning devices and instrumentation are maintained and operated properly.

Teledyne Analytical Instruments, the manufacturer of this instrument, cannot

accept responsibility for conditions beyond its knowledge and control. No statement

expressed or implied by this document or any information disseminated by the manufactur-

er or its agents, is to be construed as a warranty of adequate safety control under the

user’s process conditions.

iii

Thermal Conductivity Analyzer

Specific Model Information

The instrument for which this manual was supplied may incorporate one or more

options not supplied in the standard instrument. Commonly available options are listed

below, with check boxes. Any that are incorporated in the instrument for which this

manual is supplied are indicated by a check mark in the box.

Instrument Serial Number: _______________________

Options Available with Order:

❑❑

❑ 2000A-C: Auto Calibration valves (zero/span) built-in gas selector panel

and control valves are electronically controlled to provide

synchronization with the analyzer’s operations.

❑❑

❑ 2000A-G: Stainless steel cell block with nickel filaments and Stainless

Steel fittings and tubing.

❑❑

❑ 2000A-H: Stainless steel cell block with gold filaments for corrosive gas

streams and Stainless Steel fittings and tubing.

❑❑

❑ 2000A-K: 19" Rack Mount available with either one or two analyzers

Control Units installed and ready to mount in a standard rack

❑❑

❑ 2000A-L: Gas selector panel consisting of sample/ref flow meters and

control valves for metering input of sample/calibrations

support gases

❑❑

❑ 2000A-R: Sealed reference cell (application dependent, contact factory).

❑❑

❑ 2000A-N: 220 VAC operation.

iv

Model 2000A-EU

Model 2000A-EU complies with all of the requirements of the

Commonwealth of Europe (CE) for Radio Frequency Interference,

Electromagnetic Interference (RFI/EMI), and Low Voltage Directive

(LVD).

The following International Symbols are used throughout the In-

struction Manual for your visual and immediate warnings and when

you have to attend CAUTION while operating the instrument:

STAND-BY, Instrument is on Stand-by,

but circuit is active

GROUND

Protective Earth

CAUTION, The operator needs to refer to the manual

for further information. Failure to do so may

compromise the safe operation of the equipment.

CAUTION, Risk of Electric Shock

COMBUSTIBLE GAS USAGE WARNING

DANGER

This is a general purpose instrument designed for usage in a

nonhazardous area. It is the customer's responsibility to en-

sure safety especially when combustible gases are being ana-

lyzed since the potential of gas leaks always exist.

The customer should ensure that the principles of operating of

this equipment is well understood by the user. Misuse of this

product in any manner, tampering with its components, or

unauthorized substitution of any component may adversely

affect the safety of this instrument.

Since the use of this instrument is beyond the control of

Teledyne, no responsibility by Teledyne, its affiliates, and

agents for damage or injury from misuse or neglect of this

equipment is implied or assumed.

v

Thermal Conductivity Analyzer

Table of Contents

1 Introduction

1.1 Overview........................................................................ 1-1

1.2 Typical Applications....................................................... 1-2

1.3 Main Features of the Analyzer ....................................... 1-2

1.4 Model Designations....................................................... 1-3

1.5 Front Panel (Operator Interface) ..................................... 1-3

1.6 Recognizing Difference Between LCD & VFD............... 1-5

1.7 Rear Panel (Equipment Interface) .................................. 1-5

1.8 Gas Connections ........................................................... 1-7

2 Operational Theory

2.1 Introduction .................................................................... 2-1

2.2 Sensor Theory ............................................................... 2-1

2.2.1 Sensor Configuration............................................... 2-1

2.2.2 Calibration ............................................................... 2-2

2.2.3 Effects of Flowrate and Gas Density........................ 2-3

2.2.4 Measurement Results.............................................. 2-3

2.3 Electronics and Signal Processing ................................ 2-3

2.4 Temperature Control ...................................................... 2-5

3 Installation

3.1 Unpacking the Analyzer................................................. 3-1

3.2 Mounting the Analyzer ................................................... 3-1

3.3 Electrical Connections (Rear Panel).............................. 3-3

3.3.1 Primary Input Power............................................... 3-4

3.3.2 Primary Input Power............................................... 3-4

3.3.3 50-Pin Equipment Interface Connector .................. 3-4

3.3.3.1 Analog Outputs .............................................. 3-5

3.3.3.2 Alarm Relays ................................................. 3-6

3.3.3.3 Digital Remote Cal Inputs.............................. 3-7

3.3.3.4 Range ID Relays ........................................... 3-9

3.3.3.5 Network I/O .................................................... 3-9

3.3.3.6 Remote Valve Connector ............................... 3-9

3.3.4 RS-232 Port ........................................................... 3-10

3.4 Gas Connections ........................................................... 3-11

3.4.1 Sample System Design .........................................3-13

3.4.2 Pressure and Flow Rate Regulation......................3-13

3.4.3 VENT Exhaust .......................................................3-14

3.4.4 SAMPLE Gas.........................................................3-14

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Model 2000A-EU

3.4.5 REFERENCE Gas ................................................3-15

3.4.6 ZERO Gas .............................................................3-15

3.4.7 SPAN Gas..............................................................3-15

3.5 Testing the System.........................................................3-16

3.6 Warm Up at Power Up....................................................3-16

4 Operation

4.1 Introduction .................................................................... 4-1

4.2 Using the Data Entry and Function Buttons ................... 4-1

4.3 The

System

Function ..................................................... 4-4

4.3.1 Setting the Display................................................. 4-5

4.3.2 Setting up an Auto-Cal........................................... 4-5

4.3.3 Password Protection .............................................. 4-6

4.3.3.1 Entering the Password................................... 4-7

4.3.3.2 Installing or Changing the Password ............. 4-7

4.3.4 Logging Out ........................................................... 4-9

4.3.5 System Self-Diagnostic Test .................................. 4-9

4.3.6 The Model Screen ................................................. 4-10

4.3.7 Checking Linearity with ALGORITHM ................... 4-10

4.4 The

Zero

and

Span

Functions ....................................... 4-11

4.4.1 Zero Cal................................................................. 4-12

4.4.1.1 Auto Mode Zeroing ........................................ 4-12

4.4.1.2 Manual Mode Zeroing.................................... 4-13

4.4.1.3 Cell Failure .................................................... 4-14

4.4.2 Span Cal................................................................ 4-14

4.4.2.1 Auto Mode Spanning ..................................... 4-15

4.4.2.2 Manual Mode Spanning................................. 4-15

4.5 The

Alarms

Function...................................................... 4-16

4.6 The

Range

Function ...................................................... 4-18

4.6.1 Manual (Select/Define Range) Screen .................. 4-19

4.6.2 Auto (Single Application) Screen........................... 4-19

4.6.3 Precautions............................................................ 4-21

4.7 The

Analyze

Function.................................................... 4-22

4.8 Programming ................................................................. 4-22

4.8.1 The Set Range Screen .......................................... 4.23

4.8.2 The Curve Algorithm Screen ................................. 4-25

4.8.2.1 Checking the Linearization ............................ 4-25

4.8.2.2 Manual Mode Linearization ........................... 4-26

4.8.2.3 Auto Mode Linearization................................ 4-27

4.9 Special Function Setup.................................................. 4-28

4.9.1 Output Signal Reversal.......................................... 4.28

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Thermal Conductivity Analyzer

4.9.2 Special - Inverting Output ...................................... 4-29

4.9.3 Special - Polarity Coding ....................................... 4.29

4.9.4 Special - Nonlinear Application Gain Preset.......... 4-29

Maintenance

5.1 Routine Maintenance..................................................... 5-1

5.2 System Self Diagnostic Test........................................... 5-1

5.3 VFD Display .................................................................. 5-2

5.4 Fuse Replacement......................................................... 5-2

5.5 Major Internal Components............................................ 5-3

5.6 Cell, Heater, and/or Thermistor Replacement ................ 5-5

5.6.1 Removing the Cell Compartment........................... 5-5

5.6.2 Removing and Replacing the Cell Block ............... 5-6

5.6.3 Removing the Heater and/or Thermocouple .......... 5-7

5.7 Cleaning ........................................................................ 5-4

5.8 Phone Numbers............................................................. 5-5

Appendix

A-1 Specifications ................................................................ A-1

A-2 Recommended 2-Year Spare Parts List ......................... A-3

A-3 Drawing List................................................................... A-4

A-4 19-Inch Relay Rack Panel Mount................................... A-4

A-5 Calibration Procedure for TG Application........................... A-5

viii

Model 2000A-EU

1-1

Thermal Conductivity Analyzer Introduction 1

Teledyne Analytical Instruments

Introduction

1.1 Overview

The Analytical Instruments Model 2000 Thermal Conductivity Ana-

lyzer is a versatile microprocessor-based instrument for measuring a com-

ponent gas in a background gas, or in a specific mixture of background

gases. 2000A-EU Analyzer complies with all of the requirements of the

Comonwealth of Europe (CE) for Radio Frequency Interference and Elec-

tromagnetic Interfaces (RFI/EMI) protection. It compares the thermal

conductivity of a sample stream with that of a reference gas of known

composition. The 2000 can—

• measure the concentration of one gas in a mixture of two gases.

• measure the concentration of a gas in a specific mixture of

background gases.

• measure the purity of a sample stream containing a single

impurity or a mixture of impurities.

The standard 2000 is preprogrammed with automatic linearization

algorithms for a large number of gases and gas mixtures. The factory can

add to this data base for custom applications, or the sophisticated user can

add his own unique application.

This manual covers the Model 2000A-EU General Purpose flush-

panel and rack-mount units only. These units are for indoor use in a

nonhazardous environment.

Many of the Model 2000 features covered in this manual are optional,

selected according to the customers specific application. Therefore, the user

will find much here that does not apply to his instrument. This is unavoid-

able due to the number of possible combinations of features available. We

have endeavored to make the manual as usable and convenient as possible,

in light of this flexibility.

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1 Introduction Model 2000A-EU

Teledyne Analytical Instruments

1.2 Typical Applications

A few typical applications of the Model 2000 are:

• Power Generation

• Air liquefaction

• Chemical reaction monitoring

• Steel manufacturing and heat treating

• Petrochemical process control

• Quality assurance

• Refrigeration and storage

• Gas proportioning control.

1.3 Main Features of the Analyzer

The main features of the Model 2000 Thermal Conductivity Analyzer

include:

• Three independent, user definable, analysis ranges allow up to

three different gas applications with one concentration range

each, or up to three concentration ranges for a single gas appli-

cation, or any combination.

• Special recalibration range for multiple applications. Recalibrat-

ing one, recalibrates all.

• Automatic, independent linearization for each range.

• Auto Ranging allows analyzer to automatically select the proper

preset range for a given single application. Manual override

allows the user to lock onto a specific range of interest.

• RS-232 serial digital port for use with a computer or other

digital communications device.

• Two adjustable concentration alarms and a system failure alarm.

• Extensive self-diagnostic testing, at startup and on demand.

• A 2-line alphanumeric display screen, driven by microprocessor

electronics, that continuously prompts and informs the operator.

• High resolution, accurate indication of target or impurity gas

concentration from large, bright, meter readout. (0-9999 ppm

through 0-100 % depending on types of gas involved.)

• Standard, proven sensor cell design.

• Wide range of custom applications, ranges, and linearization.

1-3

Thermal Conductivity Analyzer Introduction 1

Teledyne Analytical Instruments

• Microprocessor based electronics: 8-bit CMOS microprocessor

with 32 kB RAM and 128 kB ROM.

• Auto and remote calibration capabilities.

• CE Mark Certified.

• Four analog outputs: two for measurement (0–1 V dc and

Isolated 4–20 mA dc) and two for range identification.

• Compact and versatile design: Small footprint, yet internal

components are accessible.

1.4 Model Designations

The Model 2000A-EU is ordinarily custom programmed at the factory

to fit the customer’s application. Many parameters, including the number of

channels, the gas application, the materials specification of the sampling

system, and others, are options. The most common options, are covered in

this manual. See the Specific Model Information checklist in the front pages

of this manual for those that apply to your Model 2000A analyzer. Some

standard models that are not covered in this manual are listed here.

Models 2000B: NEMA-4, bulkhead mounted enclosure for general

purpose, nonhazardous environments.

Models 2010: Split architecture models using a sealed explosion-proof

enclosure for the Analysis Unit and a general purpose

remote Control Unit for installation in a safe area.

Models 2020: Both the analysis section and control unit are in a single

explosion proof enclosure.

1.5 Front Panel (Operator Interface)

The 2000A is housed in a rugged metal case with all controls and

displays accessible from the front panel. See Figure 1-1. The front panel

has thirteen buttons for operating the analyzer, a digital meter, and an

alphanumeric display. They are described briefly here and in detail in the

Operations chapter of this manual.

Function Keys: Six touch-sensitive membrane switches are used to

change the specific function performed by the

analyzer:

• Analyze Perform analysis for target-gas content of a sample

gas.

1-4

1 Introduction Model 2000A-EU

Teledyne Analytical Instruments

• System Perform system-related tasks (described in detail in

chapter 4, Operation.).

• Span Span calibrate the analyzer.

• Zero Zero calibrate the analyzer.

• Alarms Set the alarm setpoints and attributes.

• Range Set up the user definable ranges for the instrument.

Data Entry Keys: Six touch-sensitive membrane switches are used to

input data to the instrument via the alphanumeric VFD display:

• Left & Right Arrows Select between functions currently

displayed on the VFD screen.

• Up & Down Arrows Increment or decrement values of

functions currently displayed.

• Enter Moves VFD on to the next screen in a series. If none

remains, returns to the

Analyze

screen.

Figure 1-1: Model 2000A Front Panel

1-5

Thermal Conductivity Analyzer Introduction 1

Teledyne Analytical Instruments

• Escape Moves VFD back to the previous screen in a series. If

none remains, returns to the

Analyze

screen.

Digital Meter Display: The meter display is a LED device that

produces large, bright, 7-segment numbers that are legible in any lighting.

It produces a continuous trace readout from 0-9999 ppm or a continuous

percent readout from 1-100 %. It is accurate across all analysis ranges.

Alphanumeric Interface Screen: The VFD screen is an easy-to-use

interface between operator and analyzer. It displays values, options, and

messages that give the operator immediate feedback.

Standby Button: The Standby turns off the display and outputs,

but circuitry is still operating.

CAUTION: The power cable must be unplugged to fully

disconnect power from the instrument. When

chassis is exposed or when access door is open

and power cable is connected, use extra care to

avoid contact with live electrical circuits.

Access Door: For access to the thermal conductivity sensor or the

front panel electronics, the front panel swings open when the latch in the

upper right corner of the panel is pressed all the way in with a narrow

gauge tool. Accessing the main electronics circuit board requires unfasten-

ing rear panel screws and sliding the electronics drawer out of the case.

(See chapter 5.)

CAUTION: The Access door must be closed and latched for

CE mark compliance to be in effect.

1.6 Recognizing Difference Between LCD & VFD

LCD has GREEN background with BLACK characters. VFD has

DARK background with GREEN characters. In the case of VFD - NO

CONTRAST ADJUSTMENT IS NEEDED.

1.7 Rear Panel (Equipment Interface)

All electrical inputs and outputs to the 2000A are made through rear-

panel connectors. The connectors are described briefly here and in detail in

chapter 3, Installation.

1-6

1 Introduction Model 2000A-EU

Teledyne Analytical Instruments

Figure 1-2: Model 2000A-EU Rear Panel

• Power Connection Universal AC power source.

• 9-Pin RS-232 Port Serial digital concentration signal output

and control input.

• 50-Pin Equipment Interface Port

• Analog Outputs 0-1 V dc concentration plus 0-1 V dc

range ID, and isolated 4-20 mA dc

plus 4-20 mA dc range ID.

• Alarm Connections 2 concentration alarms and 1 system

alarm.

• Remote Valve Used in the 2000 for controlling

external solenoid valves only.

• Remote Span/Zero Digital inputs allow external control

of analyzer calibration.

• Calibration Contact To notify external equipment that

instrument is being calibrated and

readings are not monitoring sample.

• Range ID Contacts Four separate, dedicated,

range-identification relay contacts

(00, 01, 02, 03).

1-7

Thermal Conductivity Analyzer Introduction 1

Teledyne Analytical Instruments

Note: If you require highly accurate Auto-Cal timing, use external

Auto-Cal control where possible. The internal clock in the

Model 2000 is accurate to 2-3 %. Accordingly, internally sched-

uled calibrations can vary 2-3 % per day.

1.8 Gas Connections

The gas connectors are on the bottom of the Model 2000A chassis

near the front panel. There are no gas control valves inside the main chas-

sis. Electronic input/output ports are provided on the rear panel for the

operation of solenoid valves under the complete control of the Model 2000

electronics. See section 3.3.

A sample system must be provided for introduction of zero and span

gas, as well as sample gas, into the sample path, and for controlling the

flowrates through the sample and reference paths of the analyzer. Appropri-

ate pressure reducing regulators must be installed at all gas supply sources.

Gas Connector-and-Control Panels for specific applications are avail-

able as extra cost additions. These panels are usually designed around a

standard manifold that attaches to the Model 2000 series analyzer below

the front panel.

For those customers wishing to incorporate their own sample controls,

the recommended system piping schematic is included among the drawings

at the rear of the manual.

1-8

1 Introduction Model 2000A-EU

Teledyne Analytical Instruments

2-1

Thermal Conductivity Analyzer Operational Theory 2

Teledyne Analytical Instruments

Operational Theory

2.1 Introduction

The analyzer is composed of two subsystems:

1. Thermal Conductivity Sensor

2. Electronic Signal Processing, Display and Control.

The sensor is a thermal conductivity comparator that continuously

compares the thermal conductivity of the sample gas with that of a refer-

ence gas having a known conductivity.

The electronic signal processing, display and control subsystem

simplifies operation of the analyzer and accurately processes the sampled

data. A microprocessor controls all signal processing, input/output, and

display functions for the analyzer.

2.2 Sensor Theory

For greater clarity, Figure 2-1 presents two different illustrations, (a)

and (b), of the operating principle of the thermal conductivity cell.

2.2.1 Sensor Configuration

The thermal conductivity sensor contains two chambers, one for the

reference gas of known conductivity and one for the sample gas. Each

chamber contains a pair of heated filaments. Depending on its thermal

conductivity, each of the gases conducts a quantity of heat away from the

filaments in its chamber. See Figure 2-1(a).

The resistance of the filaments depends on their temperature. These

filaments are parts of the two legs of a Wheatstone bridge circuit that

unbalances if the resistances of its two legs do not match. See Figure

2-1(b).

2-2

2 Operational Theory Model 2000A-EU

Teledyne Analytical Instruments

Figure 2-1: Thermal Conductivity Cell Operating Principle

If the thermal conductivities of the gases in the two chambers are

different, the Wheatstone bridge circuit unbalances, causing a current to

flow in its detector circuit. The amount of this current can be an indication

of the amount of impurity in the sample gas, or even an indication of the

type of gas, depending on the known properties of the reference and

sample gases.

The temperature of the measuring cell is regulated to within 0.1 °C by

a sophisticated control circuit. Temperature control is precise enough to

compensate for diurnal effects in the output over the operating ranges of

the analyzer. (See Specifications in the Appendix for details.)

2.2.2 Calibration

Because analysis by thermal conductivity is not an absolute measure-

ment, calibration gases of known composition are required to fix the

upper and lower parameters (“zero” and “span”) of the range, or ranges, of

analysis. These gases must be used periodically, to check the accuracy of

the analyzer.

During calibration, the bridge circuit is balanced, with zero gas

against the reference gas, at one end of the measurement range; and it is

sensitized with span gas against the reference gas at the other end of the

measurement range. The resulting electrical signals are processed by the

analyzer electronics to produce a standard 0-1V, or an isolated 4–20 mA

dc, output signal, as described in the next section.

2-3

Thermal Conductivity Analyzer Operational Theory 2

Teledyne Analytical Instruments

2.2.3 Effects of Flowrate and Gas Density

Because the flowrate of the gases in the chambers affects their cooling

of the heated filaments, the flowrate in the chambers must be kept as equal,

constant, and low as possible.

When setting the sample and reference flowrate, note that gases

lighter than air will have an actual flowrate higher than indicated on the

flowmeter, while gases heavier than air will have an actual flowrate lower

than indicated. Due to the wide range of gases that are measured with the

Thermal Conductivity Analyzer, the densities of the gases being handled

may vary considerably.

Then, there are limited applications where the reference gas is in a

sealed chamber and does not flow at all. These effects must be taken in

consideration by the user when setting up an analysis.

2.2.4 Measurement Results

Thermal conductivity measurements are nonspecific by nature. This

fact imposes certain limitations and requirements. If the user intends to

employ the analyzer to detect a specific component in a sample stream, the

sample must be composed of the component of interest and one other gas

(or specific, and constant, mixture of gases) in order for the measured

heat-transfer differences to be nonambiguous.

If, on the other hand, the user is primarily interested in the purity of a

process stream, and does not require specific identification of the impurity,

the analyzer can be used on more complex mixtures.

2.3 Electronics and Signal Processing

The Model 2000 Thermal Conductivity Analyzer uses an 8031 micro-

controller (Central Processing Unit—CPU) with 32 kB of RAM and 128

kB of ROM to control all signal processing, input/output, and display

functions for the analyzer. System power is supplied from a universal

power supply module designed to be compatible with any international

power source. (See Major Internal Components in chapter 5 Maintenance

for the location of the power supply and the main electronic PC boards.)

The Temperature Control board is mounted on the inner face of the

rear panel, under the power input receptacle. The signal processing elec-

tronics including the microprocessor, analog to digital, and digital to

analog converters are located on the Motherboard at the bottom of the case.

2-4

2 Operational Theory Model 2000A-EU

Teledyne Analytical Instruments

The Preamplifier board is mounted on top of the Motherboard as shown in

the figure (in chapter 5). These boards are accessible after removing the

back panel. Figure 2-2 is a block diagram of the Analyzer electronics.

Figure 2-2: Block Diagram of the Model 2000 Electronics

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Teledyne 2000A-EU User manual

Teledyne 2000A-EU User manual

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