HP 4934A Manual de uso y cuidado

SERIAL

NUMBERS

This

manual

applies

directly

instruments

with

serial

numbers

prefixed

3648U.

For

additional

important

information

about

serial

numbers,

see

INSTRUMENTS

COVERED

MANUAL

Chapter

HEWLETT®

PACKARD

Part

No.

04934-90054

Printed

U.K.

November

1998

Hewlett-Packard

Ltd.

1998

4934A

Transmission

impairment

Measuring

Set

and

Accessories

Supplied

The

4934A

wideband

(20

110

kHz),

(20

200

kHz

option

021)

Transmission

Impairment

Measuring

Set

(TIMS).

The

transmission

impairment

measurements

which

can

made

are

listed

below.

Level

Frequency

Noise

with

Tone

Signal

Noise

Impulse

Noise

P/AR

(Peak

Average

Ratio)

Noise

Ground

*;j

The

4934A

can

make

measurements

directly

leased

lines

dial-up

lines.

has

loop

holding

capability,

monitor

speaker

and

butt-in

connection

(useful

for

talking

the

far

end

the

test

line).

There

are

four

permanently

stored

frequencies:

404

Hz,

1004

Hz,

2804

and

2713

Hz.

Any

other

four

frequencies

may

temporarily

assigned

stored

the

user.

The

4934A

can

test

circuits

using

single

frequency

(SF)

signaling

use

the

SKIP

feature,

SKIP

prevents

the

4934A

from

transmitting

signaling

frequencies

the

range

2600

Hz+150

Hz.

Contents

Getting

Started

Introduction

1-1

Switch-On

1-1

Front

Panel

Features

1-2

Demonstrating

the

4934A

-5

Demonstration

1-5

Demonstration

1-6

Error

Codes

1-7

Making

Measurements

Preliminary

Setup

2-1

Connecting

the

4934A

the

Test

Circuit

2-1

Dial

and

Hold

2-2

Dialing

using

the

4934A

and

Bott-in

2-3

Receiving

Incoming

Call

and

Holding

the

Line

2-4

Level

and

Frequency

2-5

Principles

2-5

Instrument

Operation

2-7

Message

Circuit

Noise

2-10

Principles

2-10

How

Measured

2-11

Instrument

Operation

2-12

Noise

with

Tone

(Notched

Noise)

2-13

Principles

2-13

How

Measured

2-13

Instrument

Operation

2-14

Signal

Noise

2-15

Principles

2-15

How

Measured

2-15

Contents

Instrument

Operation

2-16

Impulse

Noise

2-17

Principles

2-17

Instrument

Operation

2-18

P/AR

(Peak

Average

Ratio)

2-21

Principles

2-21

How

Measured

2-22

Instrument

Operation

2-22

Noise

Ground

2-23

Principles

2-23

How

Measured

2-23

Instrument

Operation

2-24

General

Information

Introduction

3-1

About

this

Version

3-1

Specification

3-2

Safety

Information

3-2

General

3-2

Safety

Symbols

3-3

Statement

Compliance

3-5

Electromagnetic

Compatibility

(EMC)

Information

3-5

Instruments

Covered

Manual

3-7

Options

Available

3-8

Accessories

Supplied

3-9

Accessories

Available

3-9

Specifications

3-10

Contents

Installation

Introduction

4-1

Initial

Inspection

4-1

Preparation

for

Use

4-2

Power

Requirements

4-2

Line

Fuse

4-2

Power

Cable

4-3

Battery

(Option

001

Retrofit)

4-3

Battery

4-3

Mating

Connectors

(Front

Panel)

4-4

Operating

Environment

4-4

Cleaning

4-4

Noise

Declaration

4-5

Storage

and

Shipment

4-5

Environment

4-5

Packaging

4-5

Performance

Tests

Introduction

5-1

Calibration

Cycle

5-1

Recommended

Test

Equipment

5-2

Operational

Verification

5-3

Receiver

Frequency

5-4

Receiver

Level

5-5

Weighting

Filters

5-6

Impulse

Noise

Count

5-9

Loss

Holding

Tone

5~10

Hold

Circuit

5-11

Dynamic

Hold

Circuit

5-13

Performance

Tests

5-18

Contents

Transmitter

Frequency

Accuracy

5-19

Transmitter

Level

Range

5-20

Transmitter

Level

Accuracy

-21

Transmitter

Flatness

+10

dBm

5-22

Transmitter

Flatness

-40

dBm

5-24

Receiver

Frequency

Range/Accuracy

5-30

Receiver

Level

Accuracy

5-32

Message

Circuit

Noise

Accuracy

5-34

Notch

Filter

Rejection

5-36

Signal

Noise

Ratio

Accuracy

5-37

Impulse

Noise

Threshold

Accuracy

5-39

Noise

Ground

Accuracy

5-41

Peak

Average

Ratio

(P/AR)

Accuracy

5-43

Software

Downloading

Introduction

6-1

Quick

Download

Procedure

6-2

About

the

DOWNLOAD

Program

6-3

Remote

Control

Introduction

7-1

The

Serial

Port

7~2

Serial

Port

Type

7-2

Baud

Rates

7-2

Cable

Pinout

7-3

Null

Modem

7-3

Setting

for

Remote

Control

7-4

Connecting

the

TIMS

Controller

7-4

Contents

Setting

the

Baud

Rate

7-4

Activating

Remote

Mode

7-4

Deactivating

Remote

Mode

7-4

Control

Commands

1-5

Query

Commands

7-8

Results

Display

(DISP?)

Format

7-8

Range

Error

Messages

7-9

Service

Accessory

(SAl)

Amplifier/4

kHz

Filter

Performance

Test

A-1

Service

Accessory

(SA2)

Power

Splitter/Adder

Performance

Test

B-1

Contents

Tabla de contenidos

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