Agilent Technologies 35670A Manuale utente
Agilent 35670A Quick Start Guide
Agilent Part Number 35670-90056
Printed in U.S.A.
Print Date: October 2000
© Agilent Technologies, Inc.,1992, 1995, 2000. All rights reserved.
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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