GW Instek GSP-730 User Manual

Spectrum Analyzer

GSP-730

USER MANUAL

REVISION 1.0 MAY 2012

ISO-9001 CERTIFIED MANUFACTURER

This manual contains proprietary information, which is protected by copyright. All rights are reserved. No part of this manual may be photocopied, reproduced or translated to another language without prior written consent of Good Will company.

The information in this manual was correct at the time of printing. However, Good Will continues to improve products and reserves the rights to change specification, equipment, and maintenance procedures at any time without notice.

Good Will Instrument Co., Ltd. No. 7-1, Jhongsing Rd., Tucheng Dist., New Taipei City 236, Taiwan.

SAFETY INSTRUCTIONS

Table of Contents

SAFETY INSTRUCTIONS .................................................. 3

GETTING STARTED .......................................................... 7

GSP-730 Introduction ................................. 8

Appearance ............................................... 10

First Use Instructions ............................... 17

BASIC OPERATION ........................................................ 26

Frequency Settings .................................... 28

Span Settings ............................................ 31

Amplitude Settings ................................... 34

Autoset ..................................................... 36

Marker ...................................................... 38

Measurement ............................................ 50

Limit Line Testing ..................................... 57

Bandwidth................................................. 61

Trace ......................................................... 62

Display...................................................... 67

Save/Recall Files ....................................... 71

System Settings ........................................ 76

REMOTE CONTROL ....................................................... 78

Interface Configuration ............................. 79

Command Syntax ...................................... 81

Command List .......................................... 84

FAQ .............................................................................. 103

APPENDIX .................................................................... 105

GSP-730 Default Settings ........................ 105

GSP-730 Specifications ........................... 107

GSP-730 User Manual

GSP-730 Dimensions .............................. 109

Declaration of Conformity ....................... 110

INDEX .......................................................................... 111

SAFETY INSTRUCTIONS

WARNING

Warning: Identifies conditions or practices that could result in injury or loss of life.

CAUTION

Caution: Identifies conditions or practices that could result in damage to the instrument or to other properties.

DANGER High Voltage

Attention Refer to the Manual

Earth (ground) Terminal

Frame or Chassis Terminal

Do not dispose electronic equipment as unsorted municipal waste. Please use a separate collection facility or contact the supplier from which this instrument was purchased.

SAFETY INSTRUCTIONS

This chapter contains important safety instructions that you must follow during operation and storage. Read the following before any operation to insure your safety and to keep the instrument in the best possible condition.

Safety Symbols

These safety symbols may appear in this manual or on the instrument.

GSP-730 User Manual

General Guideline

CAUTION

 Do not place any heavy object on the

instrument.

 Avoid severe impact or rough handling that

leads to damaging the instrument.

 Do not discharge static electricity to the

instrument.

 Use only mating connectors, not bare wires, for

the terminals.

 Ensure signals to the RF input do not exceed

+30dBm/±25V DC.

 Do not block the cooling fan opening.  Do not disassemble the instrument unless you

are qualified.

(Measurement categories) EN 61010-1:2010 specifies the measurement categories and their requirements as follows. The instrument falls under category II.

 Measurement category IV is for measurement performed at the

source of low-voltage installation.

 Measurement category III is for measurement performed in the

building installation.

 Measurement category II is for measurement performed on the

circuits directly connected to the low voltage installation.

 Measurement category I is for measurements performed on

circuits not directly connected to Mains.

Power Supply

WARNING

 AC Input voltage range: 100V~240V  Frequency: 50/60Hz  To avoid electrical shock connect the protective

grounding conductor of the AC power cord to an earth ground.

Safety Guidelines

SAFETY INSTRUCTIONS

Cleaning

 Disconnect the power cord before cleaning.  Use a soft cloth dampened in a solution of mild

detergent and water. Do not spray any liquid.

 Do not use chemicals containing harsh material

such as benzene, toluene, xylene, and acetone.

Operation Environment

 Location: Indoor, no direct sunlight, dust free,

almost non-conductive pollution (Note below)

 Temperature: 5°C to 45°C  Humidity: 90% @ 45°C

(Pollution Degree) EN 61010-1:2010 specifies the pollution degrees and their requirements as follows. The instrument falls under degree 2.

Pollution refers to “addition of foreign matter, solid, liquid, or

gaseous (ionized gases), that may produce a reduction of dielectric strength or surface resistivity”.

 Pollution degree 1: No pollution or only dry, non-conductive

pollution occurs. The pollution has no influence.

 Pollution degree 2: Normally only non-conductive pollution

occurs. Occasionally, however, a temporary conductivity caused by condensation must be expected.

 Pollution degree 3: Conductive pollution occurs, or dry, non-

conductive pollution occurs which becomes conductive due to condensation which is expected. In such conditions, equipment is normally protected against exposure to direct sunlight, precipitation, and full wind pressure, but neither temperature nor humidity is controlled.

Storage environment

 Location: Indoor  Temperature: -20°C to 60°C; <60°C/70% RH

Disposal

Do not dispose this instrument as unsorted municipal waste. Please use a separate collection facility or contact the supplier from which this instrument was purchased. Please make sure discarded electrical waste is properly recycled to reduce environmental impact.

GSP-730 User Manual

Green/ Yellow:

Earth

Blue:

Neutral

Brown:

Live (Phase)

Power cord for the United Kingdom

When using the instrument in the United Kingdom, make sure the power cord meets the following safety instructions.

NOTE: This lead/appliance must only be wired by competent persons

WARNING: THIS APPLIANCE MUST BE EARTHED IMPORTANT: The wires in this lead are coloured in accordance with the following code:

As the colours of the wires in main leads may not correspond with the coloured marking identified in your plug/appliance, proceed as follows:

The wire which is coloured Green & Yellow must be connected to the Earth terminal marked with either the letter E, the earth symbol

or coloured Green/Green & Yellow.

The wire which is coloured Blue must be connected to the terminal which is marked with the letter N or coloured Blue or Black.

The wire which is coloured Brown must be connected to the terminal marked with the letter L or P or coloured Brown or Red.

If in doubt, consult the instructions provided with the equipment or contact the supplier.

This cable/appliance should be protected by a suitably rated and approved HBC mains fuse: refer to the rating information on the equipment and/or user instructions for details. As a guide, a cable of 0.75mm2 should be protected by a 3A or 5A fuse. Larger conductors would normally require 13A types, depending on the connection method used.

Any exposed wiring from a cable, plug or connection that is engaged in a live socket is extremely hazardous. If a cable or plug is deemed hazardous, turn off the mains power and remove the cable, any fuses and fuse assemblies. All hazardous wiring must be immediately destroyed and replaced in accordance to the above standard.

GETTING STARTED

GSP-730 Introduction ....................................................... 8

Main Features ............................................. 8

Package Contents........................................ 9

Appearance .................................................................... 10

GSP-730 Front Panel ................................. 10

Rear Panel ................................................ 14

Display...................................................... 15

First Use Instructions..................................................... 17

Tilting the Stand ....................................... 17

Power UP and Down ................................. 18

Software Update ....................................... 19

USB Driver Installation ............................. 20

Restoring Default Settings ........................ 21

Conventions .............................................. 22

GETTING STARTED

This chapter provides a brief overview of the GSP-730, the package contents, instructions for first time use and an introduction to the front panel, rear panel and GUI.

GSP-730 User Manual

Performance

 150kHz~3GHz bandwidth  100kHz resolution

Features

 Autoset with automatic floor level and span.  Marker table function  Limit line testing  Split window display  ACPR measurement  OCBW measurement  Automatic resolution bandwidth mode.

Interface

 480640 color LCD display  On-screen menu icons  VGA video output  RS-232C  USB 2.0 Host port for data storage  USB 2.0 Device port for the virtual com port

communication

GSP-730 Introduction

The GSP-730 is a low-cost, basic spectrum analyzer. The GSP-730 has all the basic features of our more advanced models, but in a smaller package, designed especially for education.

Main Features

GETTING STARTED

Opening the box

Contents (single unit)

 Main unit  Quick Start Guide  User Manual CD

 Power cord x1 (region

dependent)

 Calibration certificate

Package Contents

Check the contents before using the GSP-730.

GSP-730 User Manual

Enter

F 1

F 2

F 3

F 4

F 5

F 6

BK SP

kHz /

Sec

mSec

MHz /

GHz /

Sec

Frequency

Span

Amplitude

Autoset

Marker

Peak

Limit Line

Meas

Trace

Display

Memory

Preset

Hardcopy

System

Hardcopy

Setup

GSP-730

150 kHz 3 GHz

Spectrum Analyzer

RF INPUT 50

+30dBm MAX.

MAX.DC ±25V

Ω

LCD Display Function

Keys

Menu keys Hardcopy key

Arrow keys

RF Input terminal

Keypad and unit keys

USB A portPower

button

Scroll wheel

LCD display

640 X 480 color LCD display. The display shows the soft keys for the current function, frequency, amplitude and marker information.

Function keys

F 1

The F1 to F6 function keys directly correspond to the soft keys on the right-hand side of display.

Frequency

Sets the center frequency, start frequency, stop frequency and step frequency.

Span

Sets the span, with options for full span, zero span and last span.

Appearance

GSP-730 Front Panel

GETTING STARTED

Amplitude

Sets the amplitude reference level, scale and amplitude units.

Autoset

Automatically searches the peak signal with maximum amplitude and displays it with appropriate horizontal and vertical scales.

Marker

The Marker key is used to configure the markers, trace markers as well as other related functionality.

Peak Search

Peak

Finds each maximum and minimum peak. Used with the Marker functions.

Meas

Configures ACPR and OCBW measurements.

Limit Line

Sets and tests Pass/Fail limit lines.

Sets the resolution bandwidth.

Trace

Sets traces and trace related functions.

Display

The Display key configures the split-screen windowing mode and the basic display properties.

Memory

The memory key is used to save or recall setup, trace and limit line data.

GSP-730 User Manual

Preset

The Preset key will restore the spectrum analyzer to the factory settings.

Hardcopy

The hardcopy key is a quick save key that will save a screen-shot of the display.

Hardcopy setup

Hardcopy

Setup

Configures the hardcopy options.

System

The System key is used to configure the RS232 interface, language, update the firmware as well as other system options.

Power key

Turns the instrument on/off.

Scroll wheel

Edit values, select listed items.

Arrow keys

Increment/decrement values (in steps), select listed items.

GETTING STARTED

RF input terminal

RF INPUT 50

+30dBm MAX.

MAX.DC ±25V

Ω

RF input port. Accepts RF inputs.

 Maximum input: +30dBm

(+20dBm measurable)

 Input impedance: 50Ω  Maximum DC voltage: ±25V  N-type: female

Numeric keypad

MHz / mSec

Enter

GHz /

Sec

kHz / mSec

BK SP

The numeric keypad is used to enter vales and parameters. It is often used in conjunction with the arrow keys and scroll wheel.

USB A, Micro SD

USB A port for saving/recalling settings/files to external memory.

Rear Panel

Fan

RS232 port

VGA port

Power socket

USB B port

Security slot

RS232

RS232 9 pin DSUB port.

USB B

USB B Device port. USB 1.1/2.0

VGA

VGA video-out port. Supports SVGA (480X640)

Fan

Power Socket

Power Socket: 100~240V, 50/60Hz. 15W Max

Security Slot

Kensington-type security slot.

GSP-730 User Manual

Display

Reference level

Function menu

Marker information

Entry / Message area Trace icons

Traces and waveforms

Soft menu keys

Frequency/ Bandwidth settings

Reference level

Displays the reference level. For details, see page

34.

Marker information

Displays marker information. For details see page

38.

Function menu

Displays the current function menu.

Soft menu keys

The Soft menu keys are associated with the F1 to F6 function keys to the right of the display.

Trace Icons

Displays the color of each active trace and the trace mode of each active trace. See page 62 for more information about traces.

Entry/Message area

This area is used to show system messages, errors and input values/parameters.

GETTING STARTED

GSP-730 User Manual

Frequency/ Bandwidth settings

Displays the Start, Center and Stop frequencies, RBW, Span and Sweep settings.

Trace and waveforms

Main display showing the traces (page 62), limit lines (57) and marker positions (38).

GETTING STARTED

Description

The GSP-730 has two adjustable tabs at the front that can be used to position the instrument into two preset orientations.

Leaning Position

Set the tabs down to have the GSP-730 leaning backward.

Upright Position

Set the tabs flat to have the GSP-730 in an upright position.

First Time Use Instructions

Use the procedures below when first using the GSP-730 to tilt the stand, power up the instrument, update the firmware and restore the unit back to the default settings. Lastly, the Conventions sections will introduce you to the basic operating conventions used throughout the user manual.

Tilting the Stand

GSP-730 User Manual

Power Up

1. Insert the AC power cord

into the power socket.

2. Press the power button to

turn the GSP-730 on.

3. The GSP-730 will begin to boot up in under a

few seconds.

Note

If system fails to start, please see your local GW Instek distributor.

Power Down

1. Press the power button to

power down.

Power UP and Down

GETTING STARTED

Description

The GSP-730 allows the software to be updated by end-users. Before using the GSP-730, please check the GW Instek website or ask your local distributor for the latest software.

The update file, MAIN1.BIN, must be placed in the root directory of a USB flash drive.

System version

Before updating the software, please check the software version.

1. Press

System

>Information[F4].

2. The system version is displayed on the

SW Ver[F4] icon.

Software version

Update software

1. Place the update file, MAIN1.BIN, into the root

directory of a USB flash drive.

2. Insert the USB flash drive into the USB port on

the front panel.

3. Press

System

>Update From USB Flash[F5].

4. Press Update Now[F3] to execute the update

process.

 When the message “Programmed Successful” is

displayed, the software has successfully completed the update procedure.

Software Update

GSP-730 User Manual

5. Reboot the system when the update procedure

has finished by cycling the power button.

6. Check the software version again to confirm

the update procedure.

Note

The upgrade process may take a few minutes.

Description

If the type B USB port on the rear panel is to be used for remote control, then the USB driver must be installed. The USB driver is located in the CD that accompanied this manual.

Driver installation

1. Ensure the GSP-730 is turned on.

2. Connect the USB cable from the PC

to the rear panel USB B port.

3. Windows will automatically detect the GSP-730

as a new device.

4. Follow the instructions to locate the GSP-730

driver on the accompanying CD and install the driver.

5. To see if the driver has been successfully

installed, you can check to see if the GSP-730 is recognized by the Windows Device Manager when the GSP-730 in connected to the PC.

In Windows XP go to: Start>Control Panel>Device Manager.

USB Driver Installation

GETTING STARTED

The GSP-730 should be shown under the Ports (COM & LPT) node:

Note

If the USB driver installation fails, you can try to manually install the driver.

You can tell that the driver hasn’t been installed if

you see the AT91USBSerial icon in the ports node.

Right clicking this icon will allow you to manually install the GSP-730.ini driver.

Description

The factory default settings can be easily restored using the Preset key on the front panel. The default settings cannot be changed. See page 105 for a list of the factory default settings.

Steps

1. Press

Preset

 The spectrum analyzer will load the default factory

settings.

Restoring Default Settings

GSP-730 User Manual

Soft Menu keys

The F1 to F6 function keys on the right side of the display correspond directly to the softmenu keys on their left.

Soft-menu keys

F1 ~ F6 function keys

Enter

F 1

F 2

F 3

F 4

F 5

F 6

BK SP

kHz /

Sec

mSec

MHz /

GHz /

Sec

Frequency

Span

Amplitude

Autoset

Marker

Peak

Limit Line

Meas

Trace

Display

Memory

Preset

Hardcopy

System

Hardcopy

Setup

GSP-730

150 kHz 3 GHz

Spectrum Analyzer

RF INPUT 50

+20dBm MAX.

MAX.DC ±25V

Input Parameter Values

Selecting this type of menu key will allow you to enter a new value with the numeric keypad or increment/decrement the value using the scroll wheel or number pad. See the parameter input description below for more details.

Conventions

The following conventions are used throughout the user manual. Read the conventions below for a basic grasp of how to operate the GSP-730 menu system and front panel keys.

GETTING STARTED

Toggle State

Pressing this menu key will toggle the state. Notice that any soft-menu key that can be toggled will have the active parameter underlined.

Toggle State & Input Parameter

Pressing this menu key will allow you to toggle the state of the function between on and off. When in the on-state, the parameter value can be manually edited. Use the numeric keypad to enter the new value or use the scroll wheel to increment/decrement the current value. Again, the setting that is underlined is the active setting.

Sub Menu

Pressing the More menu key will enter a submenu.

Sub Menu to select parameter

Pressing this type of menu key will enter a submenu to select a parameter.

GSP-730 User Manual

Return to the Start of a Menu Tree.

When you have navigated down a menu tree and you wish to return to the start of the menu tree, simply press the same Menu again.

For example if you pressed:

Trace

> More[F6] > Min Hold[F2],

simply press

Trace

again to return to the start

of the Trace menu.

Active Function

Pressing this type of menu key will activate that function. The menu key will be highlighted to show it is the active function.

Parameter input

Numerical keypad

Scroll wheel

Directional arrow keys

Backspace, Enter keys and unit keys

MHz / mSec

Enter

GHz /

Sec

kHz / mSec

BK SP

Parameter values can be entered using the numeric keypad, the scroll wheel and the arrow keys.

GETTING STARTED

Using the numeric keypad

When prompted to enter a parameter, use the number keys (0~9), the decimal key (.) and the minus key (-) to enter a value. After a value has been entered, the unit keys can be used to select the units.

The value of the parameter is shown at the bottom of the screen as it is edited.

Edited parameter

Ref:-30dBm

Back Space

Use the backspace key to delete the last character or number entered.

Using the scroll wheel

Use the scroll wheel to alter the current value. Clockwise increases the value, anti-clockwise decreases the value. The scroll wheel is usually used for values that highly variable, such as the center frequency settings.

Directional arrows

Use the directional arrows to select discrete parameters or to alter values by a coarser resolution than the scroll wheel. Left/down decreases the value, right/up increases the value. The directional arrows are usually used for values that are of a discrete nature, such as selecting a memory location.

GSP-730 User Manual

Frequency Settings .......................................................... 28

Center Frequency ...................................... 28

Start and Stop Frequency .......................... 29

Center Frequency Step .............................. 30

Span Settings ................................................................. 31

Span ......................................................... 31

Full Span ................................................... 32

Zero Span ................................................. 32

Last Span .................................................. 33

Amplitude Settings ......................................................... 34

Reference Level ......................................... 34

Amplitude Units ........................................ 35

Scale/Div .................................................. 35

Autoset ........................................................................... 36

Using Autoset ........................................... 36

Limiting the Autoset Vertical Search Range37 Limiting the Autoset Horizontal Search

Range ........................................................ 37

Marker ............................................................................ 38

Activating a Marker ................................... 39

Move Marker to Trace ............................... 43

Show Markers in Table .............................. 44

Peak Search .............................................. 46

Peak Table ................................................. 48

BASIC OPERATION

Measurement ................................................................. 50

Channel Analysis Overview ....................... 50

Limit Line Testing .......................................................... 57

Activate a Limit Line ................................. 57

Creating a Limit (Point by Point)............... 58

Bandwidth ..................................................................... 61

Resolution Bandwidth Setting (RBW) ........ 61

Trace ............................................................................. 62

Selecting a Trace ....................................... 62

Trace Math ................................................ 64

Average Trace ............................................ 65

Display .......................................................................... 67

Adjusting the LCD Brightness ................... 67

Setting a Display Line (Reference Level

Line) ......................................................... 67

Using the Video Out Port .......................... 68

Split Spectrum View .................................. 68

Save/Recall Files ............................................................ 71

Save/Recall Setup ..................................... 71

Save/Recall Trace Data .............................. 72

Save/Recall Limit Lines ............................. 73

Saving an Image File (Hardcopy) .............. 73

Load Default Settings ............................... 75

System Settings ............................................................. 76

System Information .................................. 76

System Language ...................................... 76

GSP-730 User Manual

Description

The center frequency function sets the center frequency and centers the display to the center frequency.

Operation

1. Press

Frequency

>Center[F1] and enter the

frequency and unit.

Range: Default

0kHz~3GHz

1.5GHz

Display

Set center frequency

Frequency Settings

Center Frequency

+ 84 hidden pages