Tegam 2602A Guida alla risoluzione dei problemi

10 TEGAM WAY • GENEVA, OHIO 44041 440-466-6100 • FAX 440-466-6110 • www.tegam.com

Power Standard

Model 2602A

Instruction and Service Manual

PN# 2602A-900

Publication Date: January, 2018

REV. B

10 TEGAM WAY • GENEVA, OHIO 44041 440-466-6100 • FAX 440-466-6110 • www.tegam.com

TEGAM is a manufacturer of electronic test and measurement equipment for metrology, calibration, and

production test. We also provide repair, calibration, and other support services for a wide variety of test

and measurement equipment including RF power sensor calibration systems, RF attenuation measurement

systems, ratio transformers, arbitrary waveform generators, micro-ohmmeters, LCR meters, handheld

temperature calibrators, thermometers, humidity and temperature control devices, and more.

TEGAM also repairs and calibrates test and measurement equipment formerly manufactured by Electro-

Scientific Industries (ESI), Gertsch, Keithley Instruments, Lucas Weinschel, and Pragmatic Instruments. A

complete list can be viewed on our Product Service Directory at www.tegam.com

For more information about TEGAM and our products, please visit our website at www.tegam.com: or

contact one of our customer service representatives at sal[email protected] or 800-666-1010.

10 Tegam Way,

Geneva, Ohio 44041

Telephone: (440) 466-6100

Fax: (440) 466-6110

E-mail: sal[email protected]

10 TEGAM WAY • GENEVA, OHIO 44041 440-466-6100 • FAX 440-466-6110 • www.tegam.com

Table of Contents

Section Page

I. Introduction

Purpose and functions..........................................................................1-1

Capabilities.........................................................................................1-1

Performance characteristics ..................................................................1-2

Environmental information ...................................................................1-2

Preparation for calibration or repair and shipping ....................................1-3

Expedite Repair Form ..........................................................................1-4

Warranty information...........................................................................1-5

TEGAM contact information ..................................................................1-5

II. Preparation for Use and Installation

Unpacking & Inspection........................................................................2-1

Recommended Operating Environment ..................................................2-1

III. Principles of Operation

Power Measurements...........................................................................3-1

Principles of DC Substitution .................................................................3-1

Temperature Variable Resistance ..........................................................3-1

Power Splitters ...................................................................................3-1

Controlling Thermistor Temperature ......................................................3-2

IV. Operating Instructions

Front Panel Connectors ........................................................................4-1

Calculating Calibration Factors ..............................................................4-3

Relationship between k, gamma. And effective efficiency .........................4-7

V. Maintenance and Servicing

Maintenance .......................................................................................5-1

Care and Handling of Assemblies...........................................................5-1

Connector Torque................................................................................5-2

Connector Care and Cleaning................................................................5-3

VI. Preparation for Shipment

Returning power standard for service.....................................................7-1

Repacking for shipment .......................................................................7-1

VII. Storage

Temperature and other environmental limitations ...................................8-1

10 TEGAM WAY • GENEVA, OHIO 44041 440-466-6100 • FAX 440-466-6110 • www.tegam.com

Safety Information & Precautions:

The following safety information applies to both operation and service personnel. Safety precautions and

warnings may be found throughout this instruction manual and the equipment. These warnings may be in

the form of a symbol or a written statement. Below is a summary of these precautions.

Terms in This Manual:

CAUTION statements identify conditions or practices that could result in damage to the equipment or

other property.

WARNING statements identify conditions or practices that could result in personal injury or loss of life.

Terms as Marked on Equipment:

CAUTION indicates a personal injury hazard not immediately accessible as one reads the marking, or a

hazard to property including the equipment itself.

DANGER indicates a personal injury hazard immediately accessible as one reads the marking.

Symbols:

As Marked in This Manual:

This symbol denotes where precautionary information may be found.

As Marked on Equipment:

CAUTION –Risk of Danger

DANGER –Risk of Electric Shock

Earth Ground Terminal

Off

Frame or Chassis Terminal

Earth Ground Terminal

Alternating Current

10 TEGAM WAY • GENEVA, OHIO 44041 440-466-6100 • FAX 440-466-6110 • www.tegam.com

1-1

Section I –Introduction

Purpose and Function

This Coaxial RF Power Standard is designed for the precise measurement of microwave power up to 250 W

in the 1000 MHz to 3000 MHz frequency range. This standard is configured as a feedthrough standard. The

feedthrough standards is constructed of a directional coupler paired with a 1505A thermistor power

standard. The design has the coupler and 1505A mounted on an aluminum heat sink to reduce changes in

coupling factor attributable to heating. These standards are highly accurate and stable with time and

temperature. They are ideal for use as standards for the transfer of calibration factors to other high power

RF standards and power sensors.

Capabilities

This Coaxial RF Power Standard is designed for the calibration laboratory. These units are highly accurate,

stable with time and temperature, and are designed for use as a standard for the characterization of

calibration factors for other sensors.

Table 1.1 General Specifications

Frequency Range

700 MHz to 3500 MHz

Connector Type

Max Power

+54 dBm, 250 W

RF Impedance

50 Ohms nominal

Power Linearity

<0.25% from +44 to +54 dBm (25 to 250 W)

Typical Usable Range

+34 to +54 dBm (2.5 to 250 W)

(Depends on noise floor and resolution of DC instruments)

Calibration Factor Drift

<0.5% per year

Individual Calibration factors are

supplied standard at the following

frequencies. Inquire about

additional points.

700 to 3500 MHz in 100 MHz steps, 2450 MHz

2-Sigma Calibration Factor

Uncertainty

±1%

Cal Factor Temperature Coefficient

< 18 °C or > 24 °C, add 0.6% / °C

Thermistor DC Bias Power

Approximately 30 to 80 mW (nominal)

Thermistor Resistance at Bias

200 Ohms (set by balancer)

Max VSWR

1.2 : 1

Typical Insertion Loss

0.5 dB

Nominal Coupling Factor

43 dB

Temperature: Operating

Storage

+15° to +30° C (+59° to +86° F)

-55° to +75° C (-67° to +167° F)

Physical Dimensions: Height

Width

Depth

176 mm (6.93 in)

266 mm (10.47 in)

128 mm (5.04 in)

Weight

5 kg (11 lbs)

10 TEGAM WAY • GENEVA, OHIO 44041 440-466-6100 • FAX 440-466-6110 • www.tegam.com

1-2

Section I –Introduction

Preparation For Calibration Or Repair Service

Once you have verified that the cause for the Coaxial RF Power Standards malfunction cannot be solved in

the field and the need for repair and calibration service arises, contact TEGAM customer service to obtain

an RMA, (Returned Material Authorization), number. You can contact TEGAM customer service via the

TEGAM website, www.tegam.com or by calling 440.466.6100 (All Locations) OR 800.666.1010 (United

States Only).

The RMA number is unique to your instrument and will help us identify you instrument and to address the

particular service request by you which is assigned to that RMA number.

Of even importance, a detailed written description of the problem should be attached to the instrument.

Many times repair turnaround is unnecessarily delayed due to a lack of repair instructions or of a detailed

description of the problem.

This description should include information such as measurement range, and other instrument settings,

type of components being tested, are the symptoms intermittent, conditions that may cause the

symptoms, has anything changed since the last time the instrument was used, etc. Any detailed

information provided to our technicians will assist them in identifying and correcting the problem in the

quickest possible manner. Use a copy of the Repair and Calibration Service form provided on the next

page.

Once this information is prepared and sent with the instrument to our service department, we will do our

part in making sure that you receive the best possible customer service and turnaround time possible.

10 TEGAM WAY • GENEVA, OHIO 44041 440-466-6100 • FAX 440-466-6110 • www.tegam.com

1-3

Section I –Introduction

EXPEDITE REPAIR & CALIBRATION FORM

Use this form to provide additional repair information and service instructions. The Completion of this

form and including it with your instrument will expedite the processing and repair process.

RMA#:

Instrument Model #:

Serial

Number:

Company:

Technical Contact:

Phone Number:

Additional

Contact Info:

Repair Instructions:

Evaluation Calibration Only Repair Only Repair & Calibration Z540 (Extra Charge)

Detailed Symptoms:

Include information such as measurement range, instrument settings, type of components being

tested, is the problem intermittent? When is the problem most frequent?, Has anything changed with

the application since the last time the instrument was used?, etc.

10 TEGAM WAY • GENEVA, OHIO 44041 440-466-6100 • FAX 440-466-6110 • www.tegam.com

1-4

Section I –Introduction

Warranty

TEGAM, Inc. warrants this product to be free from defects in material and workmanship for a period of one

(1) year from the date of shipment. During this warranty period, if a product proves to be defective,

TEGAM Inc., at its option, will either repair the defective product without charge for parts and labor, or

exchange any product that proves to be defective.

TEGAM, Inc. warrants the calibration of this product for a period of one (1) year from date of shipment.

During this period, TEGAM, Inc. will recalibrate any product which does not conform to the published

accuracy specifications.

In order to exercise this warranty, TEGAM, Inc., must be notified of the defective product before the

expiration of the warranty period. The customer shall be responsible for packaging and shipping the

product to the designated TEGAM service center with shipping charges prepaid. TEGAM Inc. shall pay for

the return of the product to the customer if the shipment is to a location within the country in which the

TEGAM service center is located. The customer shall be responsible for paying all shipping, duties, taxes,

and additional costs if the product is transported to any other locations. Repaired products are warranted

for the remaining balance of the original warranty, or 90 days, whichever period is longer.

Warranty Limitations

The TEGAM, Inc. warranty does not apply to defects resulting from unauthorized modification or misuse of

the product or any part. This warranty does not extend to connector wear and tear, damage, or corrosion.

This warranty does not apply to fuses, batteries, or damage to the instrument caused by battery leakage.

Statement of Calibration

This instrument has been inspected and tested in accordance with specifications published by TEGAM Inc.

The calibration of this instrument is traceable to the International System of Units (SI) through the

National Institute of Standards and Technology (NIST) or other recognized National Metrology Institutes,

by comparison to equipment and standards maintained in the laboratories of TEGAM Inc.

Document publishing dates may lag product changes.

Visit www.tegam.com to download the latest version of this manual.

Contact Information:

TEGAM INC.

10 TEGAM WAY

GENEVA, OHIO 44041

PH: 440.466.6100

FX: 440.466.6110

EMAIL: [email protected]om

WEB: http://www.tegam.com

10 TEGAM WAY • GENEVA, OHIO 44041 440-466-6100 • FAX 440-466-6110 • www.tegam.com

2-1

Section II –Preparation for Use and Installation

Unpacking & Inspection

Each Coaxial RF Power Standards is put through a series of electrical and mechanical inspections before

shipment to the customer. Upon receipt of your instrument unpack all of the items from the shipping

carton and inspect for any damage that may have occurred during transit. Report any damaged items to

the shipping agent. Retain and use the original packing material for reshipment if necessary.

Upon Receipt, inspect the carton for the following items:

Table 2.1 Packing List

Item

Part Number

Model 2602A Coaxial RF Power Standard

2602A

Technical (Operation and Maintenance) Manual

2602A-900

Calibration Certificate with Data

N/A

Mounting

The Model 2602A is not designed to be rack mounted.

Only use with Proper Equipment:

The 2602A is designed to be used with the TEGAM Model 1830A with bias and heater cable CA-21-15 or

CA-21-48.

Use in Proper Environment

Normal calibration laboratory practice dictates that the environment should be closely controlled. This will

minimize errors introduced by temperature and humidity changes. A nominal temperature of +23°C

(+73.4°F) provides a good working condition. A tolerance of ±1°C gives an ideal temperature spread.

Controlled temperatures also stabilize the aging process of the standards.

CAUTION: The RF Power Standards have a specified operating temperature range of +15° to +30° C

(+59° to +86° F). Operating beyond these limits can damage internal circuitry. Operating the instrument

beyond the temperatures specified in Table 1.1 can affect the accuracy of the instrument. See Table 1.1,

Temperature Coefficient.

CAUTION: When an RF Power Standard is to be stored for extended periods, pack the instrument into a

container. Place container in a clean, dry, temperature-controlled location. If instrument is to be stored in

excess of 90 days, place desiccant with items before sealing container. The safe environmental limits for

storage are -55° to +75° C (-67° to +167° F) at less than 95% non-condensing relative humidity.

10 TEGAM WAY • GENEVA, OHIO 44041 440-466-6100 • FAX 440-466-6110 • www.tegam.com

2-2

Section II –Preparation for Use and Installation

Do Not Use in Explosive Environments

CAUTION: The 2602A is not designed for operation in explosive environments.

Do Not Operate Without Covers

WARNING: This device should be operated with all panels and covers in place. Operation with missing

panels or covers could result in personal injury.

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