Agilent Technologies 35670A Manuale utente

Agilent 35670A Quick Start Guide

Agilent Part Number 35670-90056

Printed in U.S.A.

Print Date: October 2000

8600 Soper Hill Road Everett, Washington 98205-1209 U.S.A.

The Agilent 35670A at a Glance (Front Panel)

Agilent 35670A Front Panel

1-Use the softkeys to select items from the current

menu. A softkey’s function is indicated by a video

label on the analyzer’s screen. Throughout this

book, softkeys are printed like this:

[FFT ANALYSIS].

Hardkeys are front-panel buttons whose functions

are always the same. They have a label printed

directly on the key itself. Throughout this book,

hardkeys are printed like this: [Inst Mode].

2-The analyzer’s screen is divided into the menu

area and the display area. The menu area displays

video labels for the softkeys. The data area

displays measurement data and information about

the parameter settings.

3-The [Rtn]key returns the menu to the previous

level.

4-The POWER switch turns on the analyzer.

5-Use the SYSTEM keys to control various

system-level functions. These functions include

saving files, plotting measurement data, and

accessing online help.

6-Use the disk drive to save your work on 3.5

inch flexible disks.

7-The knob moves the markers and the cursor. It

also steps through numeric values and scrolls

through online help.

8-Use the DISPLAY keys to control what

appears on the analyzer’s traces. They only affect

how data is displayed; DISPLAY keys do not

change measurement parameters. You can press

keys in the DISPLAY menus without losing

measurement parameters.

9-Use the MARKER keys to select a variety of

marker features.

10-Use the MEASUREMENT keys to control the

analyzer’s source and inputs. They also control

measurement parameters. You must make a new

measurement if you change a

MEASUREMENT parameter.

11-Use the numeric-entry keys to enter a numeric

value.

12-The microphone power connector provides

power (8 Vdc) for the Microphone Adapter Kit

(Option UK4).

13-The connector area of the front panel has two

different configurations. The standard analyzer

has a source output connector and two input

connectors. The 4-channel analyzer (Option AY6)

has four input connectors.

Range indicators are located next to each input

connector. The upper LED is the over-range

indicator (the signal level exceeds the current

range setting). The lower LED is the half range

indicator (the signal level exceeds half the current

range setting).

14-A source on/off indicator is located at the left

edge of the connector area.

The standard Agilent 35670A (2-channel) has a

source connector on the front panel.

The Agilent 35670A at a Glance (Rear Panel)

Agilent 35670A Rear Panel

1-The GPIB connector links the Agilent 35670A

to other GPIB devices. GPIB parameters are set in

the [Local/GPIB] and [Plot/Print] menus.

2-The SERIAL PORT and the PARALLEL

PORT link the analyzer to plotters and printers.

These parameters are set in the [Plot/Print] menu.

3-The SOURCE connector outputs the analyzer’s

source signal. An LED on the front panel

indicates if the source is on or off. The source

parameters are set in the [Source] menu.

The standard Agilent 35670A (2-channel) also has

a source connector on the front panel.

4-The EXT TRIG connector links the analyzer to

an external trigger signal. The external trigger

parameters are set in the [Trigger] menu.

5-The TACH connector links the analyzer to a

tachometer. The tachometer parameters are set in

the [Input] menu.

6-The KEYBOARD connector attaches an

optional keyboard to the analyzer.

7-The DC POWER connector accepts DC power

levels from 12 - 28 Vdc (nominal).

8-The AC POWER connector accept a wide range

of ac voltage levels.

9-The POWER SELECT switch determines

whether the analyzer is powered via the AC

POWER connector or the DC POWER connector.

10-The EXT MONITOR port links the analyzer

to multi-sync monitors.

Saftey Summary

The following general safety precautions must be observed during all phases of

operation of this instrument. Failure to comply with these precautions or with

specific warnings elsewhere in this manual violates safety standards of design,

manufacture, and intended use of the instrument. Agilent Technologies, Inc.

assumes no liability for the customer’s failure to comply with these requirements.

GENERAL

This product is a Safety Class instrument (provided with a protective earth

terminal). The protective features of this product may be impaired if it is used in

a manner not specified in the operation instructions.

All Light Emitting Diodes (LEDs) used in this product are Class LEDs as per

IEC 60825- .

ENVIRONMENTAL CONDITIONS

This instrument is intended for indoor use in an installation category II,

pollution degree 2 environment. It is designed to operate at a maximum relative

humidity of 95% and at altitudes of up to 2000 meters. Refer to the

specifications tables for the ac mains voltage requirements and ambient

operating temperature range.

BEFORE APPLYING POWER

Verify that the product is set to match the available line voltage, the correct fuse

is installed, and all safety precautions are taken. Note the instrument’s external

markings described under Safety Symbols.

GROUND THE INSTRUMENT

To minimize shock hazard, the instrument chassis and cover must be connected

to an electrical protective earth ground. The instrument must be connected to

the ac power mains through a grounded power cable, with the ground wire

firmly connected to an electrical ground (safety ground) at the power outlet.

Any interruption of the protective (grounding) conductor or disconnection of

the protective earth terminal will cause a potential shock hazard that could

result in personal injury.

FUSES

Only fuses with the required rated current, voltage, and specified type (normal

blow, time delay, etc.) should be used. Do not use repaired fuses or

short-circuited fuse holders. To do so could cause a shock or fire hazard.

DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE

Do not operate the instrument in the presence of flammable gases or fumes.

DO NOT REMOVE THE INSTRUMENT COVER

Operating personnel must not remove instrument covers. Component

replacement and internal adjustments must be made only by qualified service

personnel.

Instruments that appear damaged or defective should be made inoperative and

secured against unintended operation until they can be repaired by qualified

service personnel.

WARNING The WARNING sign denotes h z rd. It c lls ttention to procedure,

pr ctice, or the like, which, if not correctly performed or dhered to,

could result in person l injury. Do not proceed beyond WARNING

sign until the indic ted conditions re fully understood nd met.

Caution The CAUTION sign denotes a hazard. It calls attention to an operating

procedure, or the like, which, if not correctly performed or adhered to, could

result in damage to or destruction of part or all of the product. Do not proceed

beyond a CAUTION sign until the indicated conditions are fully understood and

met.

S fety Symbols

Warning, risk of electric shock

Caution, refer to accompanying documents

Alternating current

Both direct and alternating current

Earth (ground) terminal

Protective earth (ground) terminal

Frame or chassis terminal

Terminal is at earth potential

Standby (supply) Units with this symbol are not completely disconnected from ac mains when

this switch is off

Table of Contents

The Basics 1

To turn on the analyzer —AC power 2

To turn on the analyzer —DC Power 3

Todisplayhelpforakey 4

To preset the analyzer 5

To activate the input channels 6

To activate the input channels—Option AY6 7

To select an instrument mode 8

To type a text string 9

To change a numeric parameter 10

To move the main marker 11

To measure a value relative to a reference 12

Setting Up 13

To set the analyzer’s GPIB address 14

To set the analyzer’sclock 15

To select the default disk 16

Working with the Display 17

To select the active trace 18

To display traces 19

To select measurement data 20

To scale measurement data 22

To display the measurement state 23

To change parameters using the measurement state 24

To display a waterfall 25

Making Measurements 27

To measure a spectrum 28

To measure frequency response —FFT 30

To measure frequency response —Swept Sine (Option 1D2) 32

To calibrate a microphone —Octave Analysis (Option 1D1) 34

To measure sound pressure level —Octave Analysis

(Option 1D1) 36

To measure harmonic distortion 38

To characterize a tach pulse 40

To specify tachometer holdoff time 42

To measure an order spectrum 44

Saving and Plotting Data 47

To format a flexible disk 48

Tosaveatracetoafile 49

To recall a trace from a file 50

Tosaveatracetoadataregister 51

To setup your plotter —GPIB 52

To setup your plotter —Serial 53

To plot screen contents 54

Automating Measurements 55

To select the active Instrument BASIC program 56

To record a measurement sequence 57

To execute a recorded measurement sequence 58

To customize your analyzer 59

To save an Instrument BASIC program to disk 60

Index

Guide to 35670A Documentation

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