Metrix MTX I 050-PC Manual de usuario

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CHAUVIN-ARNOUX Test and Measurement Division

Parc des Glaisins

6, avenue du Pré de Challes

F - 74940 ANNECY-LE-VIEUX

Tel. +33 (0)4.50.64.22.22 - Fax +33 (0)4.50.64.22.00

X02827C00 - Ed. 1 - 04/16

Contents

2 1 GHz Spectrum Analyzer

Contents

Contents.....................................................................................................................2

General Instructions..................................................................................................3

Description of the Instrument...................................................................................5

Control and display unit..........................................................................................................7

Functional Description..............................................................................................8

Detailed description of the fields...........................................................................................8

Menus.......................................................................................................................11

File...........................................................................................................................................11

Setup .......................................................................................................................................12

Options..................................................................................................................................144

? menu ..................................................................................................................................155

Technical Specifications.......................................................................................166

Frequency.............................................................................................................................166

Filters.....................................................................................................................................166

Amplitude..............................................................................................................................166

Input.......................................................................................................................................177

Cursors .................................................................................................................................177

Functions..............................................................................................................................177

PC communication ..............................................................................................................177

General Specifications..........................................................................................188

General..................................................................................................................................188

Accessories..........................................................................................................................188

General instructions

1 GHz Spectrum Analyzer 3

General Instructions

Introduction

Thank you for purchasing this METRIX spectrum analyzer.

This device complies with safety standard EN 61010-1: 2001

applicable to electronic measuring instruments.

For optimum service, read this manual carefully and comply with the

operating precautions.

Symbols used on the

instrument

Precautions and

safety measures

This spectrum analyzer meets safety standard EN 61010-1.

It is designed for use:

- indoors,

- in an environment with level-2 pollution,

- at an altitude of less than 2000m.

The operating temperature is between 0°C and 40°C, with a relative

humidity of less than 80%.

Its measurement input must not receive signals greater than

+ 25dBm and 30VDC.

Read carefully all notes preceded by the symbol opposite.

If you use this instrument in a manner that is not specified, the

protection it provides may be compromised, putting you in danger.

The safety of any system incorporating this instrument lies within the

responsibility of the system's assembler.

Prior to use

Do not place heavy objects on the instrument.

Avoid knocks and rough handling that could damage the analyzer.

For safety purposes, use only the appropriate power cord supplied

with the instrument.

Power supply

The power supply must be in the 230V range ± 10 %.

Ground

To avoid electric shock, the power cord must be connected to the

ground. Make sure that it is in good condition.

Fuse

The instrument is fitted with a fuse: 230V; 0.125A, slow-blow.

Replace it only with a fuse of the same type.

Warning: Risk of danger.

Refer to the operating manual to find out the

nature of the potential hazards and the action

necessary to avoid such hazards.

In accordance

with the WEEE

2002/96/EC

directive

General instructions

4 1 GHz Spectrum Analyzer

General Instructions (contd.)

Warranty

This equipment is warranted to be free of defects in materials or

workmanship, in accordance with the general terms and conditions of

sale.

During the warranty period, repairs to the instrument may be carried

out by the manufacturer only, who, at its sole discretion, may either

repair the instrument or replace all or part of it. In the event that the

equipment is returned to the manufacturer, initial transport costs shall

be borne by the customer.

The warranty does not apply following:

1. improper use of the equipment or use in connection

with an incompatible device

2. modification of the equipment without explicit authorization from

the manufacturer’s technical services

3. repair carried out by a person not certified by the manufacturer

4. adaptation to a specific application not provided for in the

definition of the equipment or in the operating instructions

5. an impact, a fall or a flooding.

Metrological

verification

Like all measuring or testing devices, regular instrument verification is

necessary.

Information and address details available on request:

Tel. 02.31.64.51.55 - Fax 02.31.64.51.09

Instrument

disassembly

Adjustments, maintenance or repair work on the instrument must only

be carried out by qualified personnel.

A "qualified person" is a person who is familiar with the installation,

its construction, its use and the hazards that exist.

They are authorized to activate and deactivate the installation and

equipment, in compliance with the safety instructions.

Cleaning

Unplug the instrument then clean it with a cloth moistened with soapy

water. Leave to dry before use.

Never use abrasive products or solvents.

Storage

After a period of storage in extreme environmental conditions, to

ensure that the instrument is operating with its rated specifications,

wait for the instrument to return to normal measuring conditions.

In particular, a violent change in ambient temperature (from cold to

hot) can cause condensation inside the device and provoke short

circuits.

Unpacking and

repacking

Perform a quick check for any damage that may have been caused

during transport.

In you need to return equipment, use the original packaging and

enclose written advice of the reasons for the return.

Description of the instrument

1 GHz Spectrum Analyzer 5

Description of the instrument

Front panel

Illustration

Markings

Rear panel

Illustration

HP (demod) USB (for PC) Mains connector

Markings

Input 50

400kHz - 1GHz

+ 25dBm max.

30V DC max.

On/Off

LED

Description of the instrument

6 1 GHz Spectrum Analyzer

Description of the instrument (contd.)

Presentation

This spectrum analyzer is a bench-top device used in conjunction with a

PC connected by a USB cable.

The user interface is not displayed directly on the instrument, but as part of

the operating software.

This device measures the amplitude of HF signals up to 1GHz.

Capture occurs in the spectrum analyzer unit; the data is processed and

displayed by software on the PC.

Signals are input through a 50BNC connector on the front panel.

Software

The MTX 1050 software must be installed in order to:

control the spectrum analyzer

supply the USB driver to the PC on the first connection

This software provides the graphic representation and the communication

interface. It runs under Windows 98, Millennium, 2000 and XP.

Displayed data can be backed up, recorded and/or printed out.

First USB connection

to the PC

Once the MTX 1050 software has been installed, connect the analyzer to

the PC's USB port:

Step

Action

The PC has detected the USB connection and will add a new

device.

Select: "Do not connect to "Windows Update" to search for

updates".

Choose: "Install from a specified location".

Select:

"Find the best driver in these locations".

"Include this location in the search".

Specify: "C:\MTX1050\Driver".

There may be a message to the effect that the driver is not

Microsoft®-certified (WHQL); proceed with the installation

nevertheless. The driver is stable and provides communication

between the PC and the analyzer

Graphic

representation

The y-axis shows the dBm or dBµV levels.

The x-axis shows the frequencies in MHz.

Power supply

A removable power cord connects the instrument to the electricity mains

(230V, 50Hz) through the mains connector situated on the front panel.

A red LED on the front panel indicates that the device is on.

HF connection

The analyzer's HF port is used to connect it to a circuit for testing or an

antenna.

The frequency and level of the signals received are detected, then

represented on the PC's screen, using the software.

Description of the instrument

1 GHz Spectrum Analyzer 7

Description of the instrument (contd.)

Control and

display unit

Key

Item

Explanation

Menus

Span frequencies

Span type and speed

Filters

Reference level

Delta cursor data

Peak cursor

Free cursor

RUN / STOP button

UNCAL message

Graph

Spectrum

Memory spectrum

Averaging coefficient

Visual indicators of the selected spectrum

Visual indicator of the REMOTE mode

Memory spectrum offset

Functional Description

8 1 GHz Spectrum Analyzer

Functional Description

Detailed description

of the fields

Start Center Stop

frequencies

These 3 values characterize the frequency sweep for the span

selected:

Start indicates the span's start frequency

Center indicates the span's center frequency

Stop indicates the span's stop frequency

When one of the 3 frequencies is changed, the other 2 are

automatically recalculated on the basis of the span.

Increment:

Start, Center and Stop can be adjusted by increments of ± 0.1 MHz

Dynamic:

Start from 0 to (1000 - span) MHz

Center from (span/2) to 1000 - (span/2) MHz

Stop from span to 1000 MHz

Example

The span is 100 MHz with:

Start at 200 MHz

Center at 250 MHz

Stop at 300 MHz

If …

Then …

Center is set to 500MHz,

Start changes to 450 MHz (500 - 100/2).

Stop changes to 550 MHz (500 + 100/2).

SPAN frequency

range

The SPAN represents the frequency band covered by the analyzer as it

sweeps its reception signal.

There is a pre-defined list of spans: Full span 1000 MHz

500 MHz

200 MHz

100 MHz

50 MHz

20MHz

10 MHz

5 MHz

2 MHz

1 MHz

Zero span (fixed frequency)

At each change of span, the

Start

Center

Stop

frequencies are automatically updated, taking the last frequency

modified as a reference point.

Functional Description

1 GHz Spectrum Analyzer 9

Functional Description (contd.)

Example

The span is 100MHz with:

Start at 200 MHz

Center at 250 MHz

Stop at 300 MHz

If the span changes to 50 MHz, there are 3 possibilities, depending on

the last frequency modified:

If the last frequency

modified is…

Then …

the Start frequency,

Start remains at 200 MHz.

Center changes to 225 MHz.

Stop changes to 250 MHz.

the Center frequency,

Start changes to 225 MHz.

Center remains at 250 MHz.

Stop changes to 275 MHz.

the Stop frequency,

Start changes to 250 MHz.

Center changes to 275 MHz.

Stop remains at 300 MHz.

SWEEP rate

The SWEEP rate represents the speed at which the frequency band

(span) is swept.

The slower the sweep, the more accurate the representation of the

spectrum in terms of level and frequency.

There is a pre-defined list of sweep rates: 30 ms

50 ms

100 ms

200 ms

500 ms

1 s

Filter

Res. BW

Video BW

Two filters can be configured:

the RBW resolution filter selects the resolution bandwidth in

which the spectrum analysis is to be performed.

There are 3 RBW filters: 1 MHz (default value)

120 kHz

12 kHz

The latter 2 filters are used only with the appropriate spans and

sweeps.

If the span is too great or the sweep too fast, the resolution filter

returns to its default value (1 MHz).

the Video BW video filter selects the filter at the end of the

analysis in order to eliminate noise for the spectrum

representation.

There are 3 video filters: 300 kHz (default value)

10 kHz

1 kHz

If the last filter (1 kHz) is activated with a sweep that is too fast,

it may distort the level representation. If so, an "UNCAL"

message appears to notify the user (see following page).

Functional Description

10 1 GHz Spectrum Analyzer

Functional Description (contd.)

Reference level

REF LVL

This field indicates the maximum level that can be analyzed and

represented on the graph.

The default reference level is 0dBm.

Users should choose:

a REF. LEVEL of +20dBm to analyze strong signals

a REF. LEVEL of -20dBm to analyze weak signals

DELTA Cursors

The Delta Cursors field displays the data for the 2 cursors on the

graph.

These cursors are tied to the plot. Their coordinates are precise

spectrum measurement points.

The following data are displayed:

the frequency values of the 2 cursors,

the level values of the 2 cursors,

the difference (DELTA) in frequency and level between the 2

cursors level.

PEAK cursor

The Peak cursor indicates the peak value measured on each new

spectrum.

It gives the frequency and the level.

Free cursor

The free cursor is tied to the plot; the user positions it at will on the

entire spectrum.

It returns the frequency and the level.

RUN / STOP button

The Run / Stop button is used to either freeze or reinitialize the

spectrums.

If the analyzer is in "single" mode, pressing the Run / Stop button

reinitializes a spectrum measurement.

The [ESC] button on the PC is a keyboard shortcut that serves the

same purpose.

UNCAL message

The UNCAL message appears if the Span, Sweep, RBW and VBW

settings are incompatible with each other.

It notifies the user that the spectrum representation may be inaccurate

with regard to level.

AVG message

The AVG-'n' message appears when the "Averaging" function is

activated.

'n' takes the following values: 2, 4, 8, 16, 32 or 64.

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