Instek GSP-730 User Manual

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Spectrum Analyzer

GSP-730

USER MANUAL

GW Part No. 82SP-73000M01

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.

Table of Contents

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

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

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

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

First Time 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 ............................. 80

Configure Remote Interface ...................... 80

Command Syntax ...................................... 82

Command List .......................................... 85

FAQ .............................................................................. 104

APPENDIX .................................................................... 106

GSP-730 Default Settings ........................ 106

GSP-730 User Manual

GSP-730 Specifications ........................... 108

GSP-730 Dimensions .............................. 110

Declaration of Conformity ....................... 111

INDEX .......................................................................... 112

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 Time 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 /

µSec

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. Only supports FAT/FAT32 formatting.

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 106 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 /

µSec

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

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

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

BASIC OPERATION

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 ................................................................................. 77

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

BASIC OPERATION

Description

The start/stop frequency function will set the start and stop frequency of the span.

Operation

1. To set the start frequency, press

Frequency

Start[F2] and enter the frequency and unit.

2. To set the stop frequency, press

Frequency

Stop[F3] and enter the frequency and unit.

Range: Default Start frequency: Default Stop frequency:

0kHz~3GHz 0Hz 3GHz

Display

Start Frequency Stop Frequency

Note

The start and stop frequency can change when the span settings are used. The stop frequency must be set higher than the start frequency (for spans  0).

Start and Stop Frequency

GSP-730 User Manual

Description

The Step function sets the step size of the center frequency when using the arrow keys.

When the arrow keys are used to alter the center frequency, each press will move the center frequency by the step size specified by the Step function.

By default, the center frequency step size is equal to 10% of the span.

Operation

1. Press

Frequency

> Step[F4] and set the center

frequency step size.

Range:

1Hz~3GHz

Display

Step size

Center Frequency Step

BASIC OPERATION

Description

The Span function will set the frequency range of the sweep. The sweep will be centered around the center frequency.

Setting the span will alter the start and stop frequencies.

Operation

1. Press

Span

> Span[F1] and enter the span

frequency range and unit.

Range: Default Span:

0kHz~3GHz 3GHz

Display

Span

Set Span

Span Settings

Span

Full Span

Description

The Full Span function will set the span to the full frequency range.

This function will set the start and stop frequencies to 0Hz and 3GHz respectively.

Operation

1. Press

Span

> Full Span[F2].

Description

The Zero Span function will set the frequency range of the sweep to 0Hz and fixes the start and stop frequencies to the center frequency. The Zero Span function measures the time domain characteristics of the input signal at the center frequency. The horizontal axis is displayed in the time domain.

Operation

1. Press

Span

> Zero Span[F3].

The span changes accordingly.

Zero Span

GSP-730 User Manual

Display

Time domain

0Hz Span

Example: Amplitude modulation

Note

The measurement functions such as ACPR and OCBW are not available with the zero span setting:

Last Span

Description

The last span function returns the spectrum analyzer to the previous span settings.

Operation

1. Press

Span

> Last Span[F4].

BASIC OPERATION

GSP-730 User Manual

Description

The reference level defines the absolute level of the amplitude on the top graticule in voltage or power.

Operation

1. Press

Amplitude

> Ref. Level[F1] and enter the

reference level amplitude.

Range: Resolution:

-20dBm ~ 20dBm 10dBm

Display

Ref Level reading

Amplitude Settings

The vertical display scale is defined by the reference level amplitude, attenuation, scale and external gain/loss.

Reference Level

BASIC OPERATION

Description

The amplitude units can be set from dBm, dBmV or dBuV.

1. Press

Amplitude

> Units …[F3] to change the

amplitude units.

Units:

dBm, dBmV, dBuV

Description

Sets the logarithmic units for the vertical divisions.

Operation

1. Press

Amplitude

> Scale[F2] repeatedly to select the

vertical division units.

Scale Range:

10, 5, 2, 1

Display

Scale

Amplitude Units

Scale/Div

Operation

1. Press

Autoset

> Autoset[F1].

Autoset Range

Amplitude: Span:

Over the full amplitude range. Over the full span range.

Example:

Before Autoset, default state

After Autoset

GSP-730 User Manual

Autoset

The Autoset function searches the peak signals and picks the signal peak with the maximum amplitude, and then shows it in the display.

Using Autoset

BASIC OPERATION

Note

RBW setting is reset to Auto when the Autoset function is used.

Description

You can set the amplitude floor so that the signals lower than the setting will be ignored by the Autoset search.

Operation

1. Press

Autoset

> Amp.Floor[F2] and switch the

range from Auto to Man.

1. Enter the amplitude limit with the number pad

and Enter key.

Range:

−50 to +20dBm

Note

See page 35 for setting the amplitude units.

Description

You can change the frequency span limit in the display to get a better view of the Autoset result. By default, the frequency span after Autoset is set at 3MHz.

Operation

1. Press

Autoset

> Span[F3] and switch the range

from Auto to Man.

2. Enter the span frequency for the Autoset

search.

Manual Range:

full amplitude range.

Limiting the Autoset Vertical Search Range

Limiting the Autoset Horizontal Search Range

GSP-730 User Manual

Marker

A Marker shows the frequency and amplitude of a waveform point. The GSP-730 can activate up to 5 markers or marker pairs simultaneously.

The marker table and peak table functions help editing and viewing multiple markers in a single display.

The delta marker function allows you to see the frequency and amplitude differences between reference markers.

The GSP-730 can automatically move a marker to various locations including the peak signal, center frequency, and start/stop frequency. Other marker operations regarding signal peaks are available in the Peak Search function.

 Activating a Marker → from page 39  Activate a Delta Marker→ from page 40  Move Marker Manually→ from page 41  Move Marker to Preset Locations→ from page 42  Move Marker to Trace→ from page 43  Turn All Markers On or Off→ from page 44  Show Markers in Table→ from page 44  Peak Search→ from page 46  Move Marker to Peak→ from page 46  Move Marker and Peak to Center→ from page 46  Search for Peaks→ from page 47  Peak Table→ from page 48

BASIC OPERATION

Operation

1. Press

Marker

> Marker[F1] and select a marker

number.

Marker:

1~5

2. Press [F2] to turn the selected marker on.

3. Press Mode[F3] and set the marker mode to

Normal.

4. The display will show the marker on the trace

(centered by default) with the marker measurement at the top of the display.

Maker No., Frequency, Amplitude

Marker

Activating a Marker

There are two basic marker types, normal markers and delta markers. Normal markers are used to measure the frequency/time or amplitude of a point on the trace. Delta markers are used to measure the difference between a reference point and a selected point on the trace.

Activate a Normal Marker

GSP-730 User Manual

Description

Delta markers are marker pairs that measure the difference in frequency and amplitude between a reference marker and a delta marker.

When delta markers are activated, the reference and delta marker appear at the position of the selected marker, or in the center of the display if the selected marker has not yet be activated.

The marker measurement is located at the top

of the display, under the “normal marker”

measurement.

Delta Markers

Ref:

Reference marker, designated as 1.

Delta:

Delta marker, designated as 11.

Operation

1. Press

Marker

> Marker[F1] and select a marker

number.

2. Press [F2] to turn the selected marker on.

3. Press Mode[F3] to set the mode to Delta to

activate the delta marker.

Activate a Delta Marker

BASIC OPERATION

Delta maker No., Frequency, Amplitude

Delta

Marker

Operation

1. Press

Marker

> Marker[F1] and select a marker

number.

2. Use the left/right arrow keys to

move the marker one screen division at a time or the use the scroll wheel to move the marker in fine increments (one pixel at a time).

3. Alternatively, the numeric keypad

can be used to directly enter the frequency of the marker position.

7 8 9

654

1 2 3

Move Marker Manually

GSP-730 User Manual

Preset conditions

The currently selected marker (normal marker or delta marker) can be moved to a number of preset positions:

Center: Peak Start: Stop: Step: Ref. Level:

Move to center frequency. Move to the highest peak. Move to start frequency. Move to stop frequency. Move to step frequency. Move to reference level amplitude.

Note

When a marker is moved to a preset position the span and other settings may be automatically changed.

Move marker to peak:

Press

Marker

> To Peak[F4].

Move marker to center:

Press

Marker

> To Center[F5].

Move marker to other positions

Press

Marker

> More[F6]>Marker to ...[F4] and

select one of the preset positions:

Marker to Start[F2] Marker to Stop[F3] Marker to Step[F4] Marker to Ref. Level[F5]

Move Marker to Preset Locations

BASIC OPERATION

Description

The Marker Trace function moves the selected marker to the currently active trace.

Operation

1. Press

Marker

> Marker[F1] and select a marker

number.

2. Press More[F6]>Marker Trace and select a trace

to assign the selected marker to. If Auto is selected, the selected marker is automatically assigned a trace.

Marker Trace:

Auto, A, B, C

3. In the example below, marker 1 is set to trace

Marker 1, Trace B

Move Marker to Trace

GSP-730 User Manual

Description

All markers that have been activated, both normal and delta markers, can be turned off at the same time with the All Mrk Off function.

Operation

Press

Marker

> Marker[F1] >More[F6]>All Mrk

Off[F3] and turn all the markers off.

Description

The GSP-730 has a Marker Table function to show all the active markers and measurements at once.

Operation

1. Press

Marker

> Marker[F1] >More[F6]>Marker

Table[F2] and turn the marker table on.

2. The display will split into two screens. The

bottom half will show the Marker Table with the marker No. (normal, reference or delta), frequency and the amplitude of the marker.

Marker Table

Turn All Markers On or Off

Show Markers in Table

BASIC OPERATION

Description

While the Marker Table function is the active function, the position of each marker and delta marker can be edited within the marker table.

1. Use the arrow keys to move the cursor to the

frequency column of the desired marker.

Cursor

2. Enter the new position of the marker using the

keypad and units keys.

Edit Markers in Marker Table

GSP-730 User Manual

Description

Move the active marker to the highest peak. The highest peak can be either found once or continuously.

Operation

1. Press

Marker

> Marker[F1] and select a marker

number.

2. Press

Peak

>Peak Search[F1]. The marker will

move to the highest signal peak.

3. To continually search for the peak each sweep,

press,

Peak

>More[F6]>Peak Track[F1] and set

Peak Track to ON.

Description

The Peak to Center function moves the marker to the highest signal peak and moves the center frequency to that peak.

Operation

1. Press

Marker

> Select Marker[F1] and select a

marker number.

2. Press

Peak

>Peak to Center[F5].

Note

The span will not be changed.

Peak Search

The Peak Search key is used to find trace peaks. The currently active marker is used in conjunction with the peak functions to mark the peaks that are found. Peaks can be sorted by frequency or amplitude in the peak table.

Move Marker to Peak

Move Marker and Peak to Center

Search for Peaks

Description

The

Peak

key can be used to search for a

number of different peaks.

Peak Search

Next Peak:

Searches for next highest peak visible on the display.

Next Peak Right:

Searches for the next peak to the right of the marker.

Next Peak Left:

Searches for the next peak to the left of the marker.

Min Search:

Searches for the lowest peak.

Operation

1. Press

Marker

> Select Marker[F1] and select a

marker number.

2. Press

Peak

and select the type of peak you

wish to find.

Example: Next Peak

BASIC OPERATION

GSP-730 User Manual

Example: Next Peak Right

Example: Next Peak Left

Description

The Peak Table function will display up to 5 peaks. The amplitude and frequency for each peak is listed.

Operation

1. Press

Peak

>More [F6]>Peak Table[F1] and turn

the peak table on.

Peak Table

BASIC OPERATION

2. Press Peak Sort[F2] and set the sorting type:

Freq:

Amp:

Sort by frequency in ascending order. Sort by amplitude in ascending order.

Display

The bottom-half of the screen shows the peak table with the peak marker no., frequency and amplitude.

Peak Table

Peak markers

GSP-730 User Manual

Description

Channel analysis measurement includes ACPR (adjacent channel power) and OCBW (occupied bandwidth) measurements.

Parameters

Channel bandwidth

The frequency bandwidth the target channel occupies. Range: Between 0Hz~3GHz (0Hz excepted)

Channel Space

The frequency distance between each main channel. Range: Between 0Hz~3GHz

Adjacent channel bandwidth 1 & 2

The frequency bandwidth the adjacent channels occupy. Range: Between 0Hz~3GHz (0Hz excepted)

Measurement

This section describes how to use the automatic measurement modes. The GSP-730 includes the following measurements:

 ACPR → from page 51.  OCBW → from page 54.

Channel Analysis Overview

Adjacent channel offset 1 ~ 2

The frequency distance between the adjacent channels and main channel. Range: 1 Between 0Hz~3GHz (0Hz excepted)

OCBW%

The ratio of occupied bandwidth to the amount of power consumed. Range: 0% to 100%,

0.1% resolution.

ACPR

Description

Adjacent channel power refers to the amount of power leaked to the adjacent channel from the main channel. This measurement is a ratio of the main channel power to power in the adjacent channel.

Example

Main

CHBW

ADJ

CH1

ADJ

CH2

ADJ

CH1

ADJ

CH2

Offset 1 Offset 2

Channel spacing

To next main

channel

Operation: Setting up the main channel

1. Press

Meas

> ACPR[F2] and turn ACPR on.

 Any other measurement mode will automatically be

BASIC OPERATION

GSP-730 User Manual

disabled.

2. The display splits into two screens. The top

screen shows the sweep waveform. The bottom screen shows the ACPR settings and measurement results in real time.

 Turn ACPR off to return back to the normal mode.

Channel setup

Measurements

3. Press Channel Setup…[F1] and set the

following:

Main CH BW[F1]

Set the bandwidth of the main channel.

Main CH Space[F2]

Specify the channel spacing.

Note

The main channel bandwidth and space settings are shown in the setup area at the bottom of the screen, not on the soft-key icon.

Channel BW

Channel space

BASIC OPERATION

Operation: Setting up the adjacent channel(s)

1. Press ADJCH Setup…[F3] to setup the adjacent

channels:

Adj CH BW 1[F1]

Sets the bandwidth of the 1st adjacent channel.

Adj CH Offs 1[F2]

Sets the channel offset of the 1st adjacent channel.

Adj CH BW 2[F3]

Sets the bandwidth of the 2nd adjacent channel.

Adj CH Offs 2[F4]

Sets the channel offset of the 2nd adjacent channel.

Note

The adjacent channel bandwidth and space settings are shown in the setup area at the bottom of the screen, not on the soft-key icons.

Adj CH1 settings

Adj CH2 settings

Move Channels Up/Down

1. Press the

Meas

again or press Return[F6] repeatedly to return to the start of the Measure menu tree.

2. Press CH Up[F5] to go to the next main

channel.

3. Press CH Down[F6] to go to the previous main

channel.

Note

The channel space (Main CH Space) setting determines where the next main channel is located.

OCBW

Description

Occupied bandwidth measurements are used to measure the power of the occupied channel as a percentage to the power of the channel.

Example

CH BW

OCBW

Operation: Setting up the main channel

1. Press

Meas

> OCBW %[F3] and turn OCBW

on.

 Any other measurement mode will automatically be

disabled.

2. The display splits into two screens. The top

shows the channel bandwidth. The bottom screen shows the OCBW measurement results in real time.

 Turn OCBW off to return back to the normal mode.

GSP-730 User Manual

BASIC OPERATION

Channel power and OCBW

power results

CH BW

3. Press Channel Setup…[F1] and set the

following:

Main CH BW[F1]

Set the bandwidth of the main channel.

Main CH Space[F2]

Specify the channel spacing.

Note

The main channel bandwidth and space settings are shown in the setup area at the bottom of the screen, not on the soft-key icon.

Channel BW

Channel space

GSP-730 User Manual

Move Channels Up/Down

1. Press

Meas

again or press Return[F6] repeatedly to return to the start of the Measure menu tree.

2. Press CH Up[F5] to go to the next main

channel.

3. Press CH Down[F6] to go to the previous main

channel.

Note

The channel space (Main CH Space) setting determines where the next main channel is located.

BASIC OPERATION

Operation

1. Press

Limit Line

to enter the Limit Line menu.

2. Press H Limit[F1] or L Limit[F2] and turn the

high or low limit on or off.

H Limit/L Limit:

On, Off

 The H Limit is shown as a blue line.  The L Limit is shown as a pink line.

High limit line

Low Line

Limit Line Testing

The Limit Line function is used to set the upper or lower amplitude limits over the entire frequency range. The limit lines can be used to detect whether the input signal is above, below or within the limit lines.

The limit lines can be manually edited using 10 frequency points from the start to the stop frequencies.

To save and recall limit lines, please see page 73.

Activate a Limit Line

GSP-730 User Manual

Description

Create a limit manually, point by point. Ten manually selected frequency points can be used to create the upper or lower limit line.

Operation

1. Press

Limit Line

> Limit[F1] and select the limit line you wish to edit.

Limit:

High, Low

2. Press Edit Table[F2], and turn the edit table on.

The GSP-730 is split into two screens. The top screen shows the trace and the selected limit line (high or low) and the bottom screen shows the limit line table.

Spectrum display

Limit Line Table

All 10 points will be displayed in a limit line table at the bottom of the display. By default, each point is set to 0dBm.

3. Use the arrow keys to move the cursor to the

Creating a Limit (Point by Point)

BASIC OPERATION

frequency column of the desired point.

Cursor

4. Enter the new frequency and amplitude of the

point using the keypad and the unit keys.

5. Repeat steps 3-5 for the remaining points (A

maximum of ten points).

6. To delete the selected point, press Delete [F3].

7. To delete all the points, press Delete All… [F4].

 The points will revert to their default frequency and

amplitude values.

8. To delete a point from the editing table, press

Delete.

 The whole points, including the frequency value and

the amplitude are removed. This command reduces the number of points used in the limit line.

9. Press Undelete[F5] the restore the last point that

was deleted.

Description

The Pass/Fail testing uses the limit lines as boundaries. When the input signal escapes the boundary of the limit lines, then the test is judged as a FAIL, if the signal stays within the boundary, the test is judged as a PASS.

Pass/Fail Testing

GSP-730 User Manual

Pass:

Upper limit

Lower limit

Fail:

Upper limit

Lower limit

Note

Before pass/fail testing can begin, limit lines for the upper and/or lower limits must first be saved and activated. See the page 57.

Operation

1. Press

Limit Line

>Pass/Fail[F4] to turn the testing on or off.

2. The test result is updated in real-time at the

bottom of the display.

Pass:

Fail:

Note

At least one limit line (high or low) must be turned on to enable testing.

If only high limit line is on, each trace point has to be lower than the high limit line to get a PASS judgment, otherwise get the judgment will be FAIL.

Conversely, if only low limit line is on then each trace point has to be higher than the low limit line to get a PASS, otherwise get the test will be judged a FAIL.

BASIC OPERATION

Description

The RBW (Resolution Bandwidth) defines the width of the IF (intermediate frequency) filter that is used to separate signal peaks from one another. The narrower the RBW, the greater the capability to separate signals at close frequencies. But it also makes the sweep time longer under specific frequency spans (the display is updated less frequently).

Operation

1. Press

> RBW[F1] and set the RBW to

Auto or Man.

2. Set the resolution bandwidth and unit for Man

mode.

Mode: Frequency Range:

Auto, Man 1MHz, 300kHz, 100kHz

Note

The manual RBW is only available when the span≥10MHz. If the span is greater than 10MHz then the RBW is automatically set to Auto.

Bandwidth

BW key sets the resolution bandwidth (RBW). The resolution bandwidth and the sweep time are related. Please take into account how the sweep time is effected by the resolution bandwidth.

Resolution Bandwidth Setting (RBW)

GSP-730 User Manual

Description

Each trace (A, B, C) is represented by a different color. Trace A is green, trace B is orange and trace C is yellow. When activated, an icon for each trace color and function is shown at the bottom of the display. When a trace is selected, parameters can be set/edited from the Trace menu.

Display Icons

Trace A, B, C

Trace Type & Icon

The type of trace used determines how the trace data is stored or manipulated before being displayed. The analyzer updates each trace according to the type of trace used.

Clear &

Write

The GSP-730 continuously updates the display with each sweep. This is the default trace type.

Trace

The GSP-730 is able to set the parameters of up to 3 different traces on the display at once. Each trace is represented by a different color and is updated with each sweep.

To save or recall traces to/from memory, see page 71.

Selecting a Trace

BASIC OPERATION

Peak Hold

Min Hold

The maximum or minimum points are maintained for the selected trace. The trace points are updated each sweep if new maximum or minimum points are found.

View

View will hold the selected trace and stop updating the trace data for the selected trace. Pressing View[F4] will display the trace data that was cleared using the Blank[F5] key.

Blank

Clears the selected trace from the display and stores trace data. The trace data can be restored by pressing View[F4].

Operation

1. Press

Trace

> Trace[F1] and choose a trace.

Trace:

A, B, C

2. Select the trace type:

Clear & Write[F2] Peak Hold[F3] View[F4] Blank[F5] More[F6]>Min Hold[F1]

Note

Traces B and C are set to

Blank

by default.

Trace Math

Description

Performs trace math from two traces (A, B) and stores the results in trace A or swaps the data from trace A to trace B.

Math functions

A <--> B

Swaps the data from trace A to B and vice versa.

A + B -> A

Adds trace A and B and stores the result in trace A.

A – B -> A

Subtracts trace B from trace and stores the result in trace A.

A + const ->A

Adds an offset to trace A.

A – const ->A

Subtracts an offset from trace A.

Operation

1. Press

Trace

>Trace Math..[F3] and select a

trace math function.

A <--> B

[F1]

A + B -> A

[F2]

A – B -> A

[F3]

A + const ->A

[F4]

A – const ->A

[F5]

2. If A + const ->A or A + const ->A was selected,

set the constant (offset value).

Constant:

-40dBm ~ 40dBm

GSP-730 User Manual

Average Trace

Description

The Average function averages the currently selected trace for a user-defined number of times before it is displayed. This feature smoothes the noise level, but has the drawback of slowing down the display update rate.

Operation

1. Press

Trace

> More[F6] and toggle Avg on.

2. Set the number of averages.

Range: Default:

4 ~ 100 4

BASIC OPERATION

Example:

Average:Off

Average: On (8)

GSP-730 User Manual

BASIC OPERATION

Description

The LCD brightness levels can be adjusted to five pre-set levels.

Operation

1. Press

Display

> LCD Dimmer[F1] and use either

the number pad, the scroll wheel or arrow keys to set the brightness.

Description

The Display Line function is used to superimpose a reference level line over the traces.

Operation

1. Press

Display

> Display Line[F3] to turn the

display line on.

2. Set the display line level and press Enter.

Example:

Display line

Display line set at -50dBm

Display

The Display key configures the basic display settings as well as the split screen modes.

Adjusting the LCD Brightness

Setting a Display Line (Reference Level Line)

GSP-730 User Manual

Description

The GSP-730 has a dedicated VGA terminal to output the display to an external monitor. The video output is always on.

Output resolution

480 x 640 (fixed)

Operation

1. Connect an external monitor to

the rear panel VGA terminal.

Description

The split spectrum view is able to view two different sweep ranges on the display at the same time using a split screen view. The top and bottom view can have independent sweep ranges, amplitudes, spans and other settings. However only one split screen (top or bottom) can be swept each time.

Example

Lower

spectrum

Upper

spectrum

Using the Video Out Port

Split Spectrum View

BASIC OPERATION

Split spectrum functions

Half-Upper

Half-Upper will put the spectrum analyzer into split screen mode. It will make the top sweep the active sweep and pause the bottom sweep. When Half-Upper is on, only the upper sweep parameters can be edited.

Half-Lower

Half-Lower will put the spectrum analyzer into split screen mode. It will make the bottom sweep the active sweep and pause the top sweep. When Half-Lower is on, only the lower sweep settings can be edited.

Alternate Sweep

This setting will alternate the sweep between the bottom and top spectrums. If alternate sweep is turned on, only the upper sweep parameters can be edited.

GSP-730 User Manual

Operation

1. Press

Display

>Half-Upper[F4] or Half-Lower[F5]

or Alternate Sweep[F6] to enable the split spectrum view.

 Turning Half-Upper on will automatically turn

Half-Lower off.

 Turning Half –Lower on will automatically turn

Half-Upper off .

 If Alternate Sweep is turned on, each sweep will

alternate, but only the upper sweep parameters can be edited.

2. To return to a full-screen, single spectrum

display, press Full Display[F2].

Note

After exiting the split spectrum view, the analyzer will use the settings from the active window. The settings for the inactive screen will be retained for the next time that split spectrum view is used.

If the spectrum analyzer was in the Alternate mode, then the upper sweep settings will be returned.

BASIC OPERATION

Description

Setup data contains all the data necessary to recall the state of the GSP-730 to known state.

Setup data contains the following data:

Center frequency, Start frequency, Stop frequency, Step frequency, Ref. Level, Scale, Units, RBW

Save

1. To save the current settings, press

Memory

> Setup To[F1] and choose a memory location to save to with the arrow keys.

Setup To:

1~5

2. Press

Enter

kHz /

µSec

to execute the save.

Recall

1. To recall a setup, press

Memory

> Setup From[F2] and choose a memory location to recall from with the arrow keys.

Setup From:

1~5

2. Press

Enter

kHz /

µSec

to execute the recall.

Save/Recall Files

The GSP-730 can save and recall setup data, trace data and limit line data to and from internal memory. There are five memory locations for each save file type. These files cannot be saved to USB.

The Hardcopy key can be used to save image files to a USB flash drive.

Save/Recall Setup

GSP-730 User Manual

Description

The trace data can be saved/recalled for any of the A, B or C traces to/from one of 5 pre-set internal memory locations. The trace data cannot be recalled or saved to USB.

When saving or recalling trace data from a split spectrum, only the active spectrum is saved/recalled.

Save

1. To save the current trace data, press

Memory

Save Trace Data..[F3]

2. Press Source Trace[F1] and select the source:

Source:

A, B, C

3. Press Destination[F2] and select the memory

location to save to:

Destination:

1~5

4. Press Start[F5] to save the selected trace data.

Recall

5. To recall trace data, press

Memory

> Recall Trace

Data..[F3]

6. Press Source Trace[F1] and select the memory

location to recall from:

Source:

1~5

7. Press Destination[F2] and select the destination

trace

Destination:

A, B, C

Save/Recall Trace Data

BASIC OPERATION

8. Press Start[F5] to recall the selected trace data.

Description

Upper and lower limit lines can be saved to one of 5 pre-set internal memory locations. The limit line data cannot be saved to USB.

Save

1. To save the current upper and lower limit

lines, press

Memory

> Limitln to[F5] and choose a memory location to save to with the arrow keys.

Limit line:

1~5

2. Press

Enter

kHz /

µSec

to execute the save.

Recall

3. To recall pre-saved upper and lower limit

lines, press

Memory

> Limitln from[F6] and choose a memory location to recall from with the arrow keys.

Limit line:

1~5

4. Press

Enter

kHz /

µSec

to execute the recall.

Description

The Hardcopy key can be used to save a screenshot of the display to a USB flash drive. The screen shot is saved as a bitmap file.

Save/Recall Limit Lines

Saving an Image File (Hardcopy)

Operation

1. Insert a USB flash drive into the USB port.

2. Press

Hardcopy

and the image file will begin

saving.

 Wait a few moments for the file to save. When the

file has finished saving, “Screen Saved OK” will appear at the bottom of the display.

Note

The file name will be automatically created in the following format:

File name: SCRXX.bmp

Where XX is a number that is incremented each time the file is saved.

Warning

Do not remove the USB drive until the file has completed saving.

Hardcopy Setup

Description

The Hardcopy Setup key is used set the image file properties of the bitmap file that is created when the Hardcopy key is pressed.

Ink Normal:

This is the normal, default image setting.

Ink Saving:

This will invert all the colors on the display so that the file will conserve ink when printed.

Operation

1. Press

Hardcopy

Setup

and choose the image type:

Ink Normal[F1]

Ink Saving[F2]

GSP-730 User Manual

BASIC OPERATION

Note

The next time the Hardcopy key is pressed, the image will be saved using the settings above.

Description

The Preset key is used to load the default settings. The default settings are listed in the appendix on page 106.

Operation

1. Press

Preset

 The system will load the preset settings and the

screen will update with the new settings.

Note

The default settings cannot be changed.

Load Default Settings

GSP-730 User Manual

Description

The System Information displays the following:

Serial Number:

XX digit serial number

HW Version:

Hardware version

FW Version:

Firmware version

SW Version:

Software version

Language:

Shows the language number as seen in the System>Language menu.

Operation

1. Press

System

>Information[F4] to display the

system information.

 The system information will be displayed on the

system menu soft-keys.

Example

System

information

System Settings

System Information

BASIC OPERATION

Description

The language option sets the icon display language.

Operation

1. Press

System

>Language…[F3] to bring up the

Language menu.

2. Choose a system language. The language

number is the number that will be displayed in the system information.

Language 1 English

Sets the language to English

Language 2 Chinese S

Sets the language to simplified Chinese

System Language

GSP-730 User Manual

Interface Configuration ...................................................... 80

Configure Remote Interface ............................................................... 80

Remote Control Function Check ...................................................... 81

Command Syntax ............................................................... 82

Command List ................................................................... 85

IEEE488.2 Standard Commands ...................................................... 87

*IDN? ..................................................................................................... 87

Sweep Commands ................................................................................ 87

si............................................................................................................... 87

sn ............................................................................................................. 87

ts .............................................................................................................. 88

Frequency Commands ......................................................................... 88

meas:freq:cen ......................................................................................... 88

meas:freq:st ............................................................................................ 88

meas:freq:stp.......................................................................................... 89

Span Commands ................................................................................... 89

meas:span ............................................................................................... 89

meas:span:full ........................................................................................ 90

Amplitude Commands ........................................................................ 90

meas:refl:unit ......................................................................................... 90

meas:refl ................................................................................................. 90

Marker and Peak Search Commands ................................................ 91

meas:mark:on ........................................................................................ 91

meas:mark:off ........................................................................................ 92

meas:mark:norm ................................................................................... 92

meas:mark:norm:freq? ......................................................................... 92

meas:mark:norm:level? ........................................................................ 93

meas:mark:delta .................................................................................... 93

REMOTE CONTROL

This chapter describes basic configuration of IEEE488.2 based remote control. For a command list, refer to the programming manual, downloadable from GW Instek website, www.gwinstek.com

REMOTE CONTROL

meas:mark:delta:freq? .......................................................................... 93

meas:mark:delta:level? ......................................................................... 94

meas:mark:tomin .................................................................................. 94

meas:mark:topeak ................................................................................. 94

meas:mark:tonp .................................................................................... 95

meas:mark:trace .................................................................................... 95

Trace Commands ................................................................................. 95

meas:tra:val1:val2 .................................................................................. 95

meas:tra:avg:on ..................................................................................... 96

meas:tra:avg:off ..................................................................................... 96

meas:tra:read.......................................................................................... 97

Power Measurement Commands ...................................................... 97

meas:acpr ............................................................................................... 97

meas:acpr:lower? ................................................................................... 98

meas:acpr:upper? .................................................................................. 98

meas:ocbw ............................................................................................. 98

meas:ocbw:bw? ..................................................................................... 99

meas:ocbw:chpw? ................................................................................. 99

Limit Line Commands ........................................................................ 99

meas:lmtline:passfail ............................................................................ 99

meas:lmtline:on ................................................................................... 100

meas:lmtline:off .................................................................................. 100

BW Commands .................................................................................. 100

con:rbw:auto........................................................................................ 100

con:rbw? ............................................................................................... 101

con:rbw:man ........................................................................................ 101

con:rbw:mode?.................................................................................... 101

con:swt? ................................................................................................ 102

Display Commands ............................................................................ 102

con:disp:split:upper ............................................................................ 102

con:disp:split:lower ............................................................................ 102

con:disp:split:alt .................................................................................. 102

con:disp:split:full ................................................................................. 103

Preset Commands .............................................................................. 103

con:preset ............................................................................................. 103

System Commands............................................................................. 103

con:sys:ser? .......................................................................................... 103

GSP-730 User Manual

USB configuration

PC side connector

Type A, host

GSP side connector

Rear panel Type B, slave

Speed

1.1/2.0 (full speed)

RS232 configuration

PC side connector

RS232 male port

GSP side connector

RS232 female port

Baud Rate:

9600, 19200, 38400, 57600,

115200.

Parity:

None, Even, Odd, Space, Mark, Multidrop.

Stop bit:

1, 1.5, 2.

Data bit:

5, 6, 7, 8

Description

The GSP-730 can use either the type B USB port or the RS232 on the rear panel for remote control.

When using the USB B port, the GSP-730 uses a USB driver to simulate an RS232 connection with a PC via USB. It is these RS232 settings that are configured for remote control.

Before using the USB B port for remote control, please install the USB driver. See page 20 for details.

Interface Configuration

Configure Remote Interface

REMOTE CONTROL

Panel operation

1. USB Connection:

Connect a USB cable from the PC to the rear panel USB B port.

RS232 Connection: Connect an RS232C cable from the PC to the rear panel RS232 port.

2. Press

System

>Serial Port…[F1]> Serial[F1] to

enter the remote configuration.

3. Set the following RS-232 settings using the

arrow keys:

Baud Rate[F1]:

9600, 19200, 38400, 57600,

115200.

Parity[F2]:

None, Even, Odd, Space, Mark, Multidrop.

Stop Bit[F3]:

1, 1.5, 2.

Data[F4]:

5, 6, 7, 8

Functionality check

Invoke a terminal application such as MTTTY (Multi-Threaded TTY).

To check the COM port No., see the Device Manager in the PC. For WinXP go to; Control panel → System → Hardware tab.

Run this query command via the terminal after the instrument has been configured for remote control (page 80).

*idn?

Remote Control Function Check

GSP-730 User Manual

This should return the Manufacturer, Model number, Serial number, and Firmware version in the following format.

 GW-INSTEK, GSP-730, XXXXXXXX, V.VV

Manufacturer: GW-INSTEK Model number : GSP-730 Serial number : XXXXXXXXXXXX Firmware version : V.VV

Note

For further details or if you have trouble running this function check, please see the programming manual, available on the GW Instek web site @ www.gwinstek.com.

Compatible Standard

IEEE488.2

Partial compatibility

SCPI, 1999

Partial compatibility

Command Structure

SCPI (Standard Commands for Programmable Instruments) commands follow a tree-like structure, organized into nodes. Each level of the command tree is a node. Each keyword in a SCPI command represents each node in the command tree. Each keyword (node) of a SCPI command is separated by a colon (:).

For example, the diagram below shows an SCPI sub-structure and a command example.

meas

:freq

:stp?

:cen?

:st?

meas:freq:cen?

Command Syntax

REMOTE CONTROL

Command types

There are a number of different instrument commands and queries. A command sends instructions or data to the unit and a query receives data or status information from the unit.

Command types

Single Command

A single command with/without a parameter

Example

meas:freq:cen 100 MHz

Query

A query is a simple or compound command followed by a question mark (?). A parameter (data) is returned.

Example

meas:freq:cen?

Command Format

100 k h z

1 2 3 4 5

Meas:f r eq:cen

1. Command header

2. Space

3. Parameter 1

4. Optional space

5. Unit or suffix.

Common Input/Return Parameters

Type

Description

Example

Boolean logic

0, 1

<NR1>

integers

0, 1, 2, 3

<NR2>

decimal numbers

0.1, 3.14, 8.5

<NRf>

any of NR1, 2

1, 1.5

GSP-730 User Manual

<freq>

<NRf> + unit

2.5 mhz

Unit = kHz, MHz, GHz. Note: The unit can be omitted (defaults to currently set unit).

<refl>

<NRf> + unit

-30 dBm

Unit = dBm, dBmV, dBuV Note: The unit can be omitted (defaults to currently set unit).

<ampl>

NR3 +unit

30.0 dBm

Note: The unit can be omitted. (Unit defaults to current unit)

{ -92, -91, ……., -89, -92, -92, -91 }

CSV data that represents each point in a trace.

ASCII string data.

Message Terminator

Line feed code (0x0A)

REMOTE CONTROL

IEEE488.2 Standard Commands

*IDN? ....................................................................................... 87

Sweep Commands

si ................................................................................................. 87

sn ................................................................................................ 87

ts ................................................................................................. 88

Frequency Commands

meas:freq:cen ........................................................................... 88

meas:freq:st............................................................................... 88

meas:freq:stp ............................................................................ 89

Span Commands

meas:span.................................................................................. 89

meas:span:full ........................................................................... 90

Amplitude Commands

meas:refl:unit ............................................................................ 90

meas:refl .................................................................................... 90

Marker Commands

meas:mark:on ........................................................................... 91

meas:mark:off .......................................................................... 92

meas:mark:norm ...................................................................... 92

meas:mark:norm:freq? ............................................................ 92

meas:mark:norm:level? ........................................................... 93

meas:mark:delta ....................................................................... 93

meas:mark:delta:freq? ............................................................. 93

meas:mark:delta:level? ............................................................ 94

meas:mark:tomin ..................................................................... 94

meas:mark:topeak .................................................................... 94

meas:mark:tonp ....................................................................... 95

meas:mark:trace ....................................................................... 95

Trace commands

meas:tra:val1:val2 .................................................................... 95

meas:tra:avg:on ........................................................................ 96

meas:tra:avg:off ........................................................................ 96

meas:tra:read ............................................................................ 97

Power measurement

meas:acpr .................................................................................. 97

meas:acpr:lower? ..................................................................... 98

Command List

GSP-730 User Manual

commands

meas:acpr:upper? ..................................................................... 98

meas:ocbw ................................................................................ 98

meas:ocbw:bw? ........................................................................ 99

meas:ocbw:chpw? .................................................................... 99

Limit Line commands

meas:lmtline:passfail................................................................ 99

meas:lmtline:on ......................................................................100

meas:lmtline:off .....................................................................100

BW commands

con:rbw:auto ...........................................................................100

con:rbw? ..................................................................................101

con:rbw:man ...........................................................................101

con:rbw:mode? .......................................................................101

con:swt? ...................................................................................102

Display commands

con:disp:split:upper ...............................................................102

con:disp:split:lower................................................................102

con:disp:split:alt .....................................................................102

con:disp:split:full ....................................................................103

Preset commands

con:preset ................................................................................103

System commands

con:sys:ser? .............................................................................103

REMOTE CONTROL

*IDN? ....................................................................................... 87

*IDN?

Query

Description

Queries the manufacturer, model number, serial number, and firmware version of the instrument.

Query Syntax

*IDN?

Return parameter

Returns the instrument identification as a string in the following format:

GW-INSTEK, GSP-730, XXXXXXXX, V.VV

Manufacturer: GWINSTEK

Model number : GSP-730

Serial number : XXXXXXXX Firmware version : V.VV

si ................................................................................................. 87

sn ................................................................................................ 87

ts ................................................................................................. 88

Set

Description

Stops the sweep.

Example

Set

Description

Continues a stopped sweep.

Example

IEEE488.2 Standard Commands

Sweep Commands

GSP-730 User Manual

Set

Description

Resets the sweep and starts it once (i.e., sweeps one time).

Example

meas:freq:cen............................................................................ 88

meas:freq:st ............................................................................... 88

meas:freq:stp ............................................................................ 89

meas:freq:cen

Set

Query

Description

Sets or queries the center frequency.

Syntax

meas:freq:cen <freq>

Query Syntax

meas:freq:cen?

Parameter

<freq>

Center frequency.

Return parameter

<freq>

Returns the frequency and unit.

Example

meas:freq:cen 100 khz

Sets the center frequency to 100kHz.

Query example

Meas:freq:cen?

>100 kHz

meas:freq:st

Set

Query

Description

Sets or queries the start frequency.

Syntax

meas:freq:st <freq>

Query Syntax

meas:freq:st?

Frequency Commands

REMOTE CONTROL

Parameter

<freq>

Start frequency

Return parameter

<freq>

Returns the start frequency and unit

Example

meas:freq:st 100 mhz

Sets the start frequency to 100MHz

Query Example

meas:freq:st?

> 100000 kHz

meas:freq:stp

Set

Query

Description

Sets or queries the stop frequency.

Syntax

meas:freq:stp <freq>

Query Syntax

meas:freq:stp?

Parameter

<freq>

Stop frequency

Return parameter

<freq>

Returns the stop frequency and unit

Example

meas:freq:stp 100 mhz

Sets the stop frequency to 100MHz

Query Example

meas:freq:stp?

> 100000 kHz

meas:span.................................................................................. 89

meas:span:full ........................................................................... 90

meas:span

Set

Query

Description

Sets or queries the frequency span.

Syntax

meas:span <freq>

Query Syntax

meas:span?

Span Commands

GSP-730 User Manual

Parameter

<freq>

Span frequency range

Return parameter

<freq>

Returns the span and unit

Example

meas:span 10 mhz

Sets the span to 10MHz

Query Example

meas:span?

> 10000.0 kHz

meas:span:full

Set

Description

Sets the span to the full span.

Syntax

meas:span:full

meas:refl:unit ............................................................................ 90

meas:refl .................................................................................... 90

meas:refl:unit

Set

Query

Description

Sets the reference level unit.

Syntax

meas:refl:unit {1|2|3}

Query Syntax

meas:refl:unit?

Parameter/ Return parameter

dBm

dBmV

dBuV

Query Example

Meas:refl:unit?

The reference level units are dBm.

meas:refl

Set

Query

Description

Sets or queries the reference level.

Amplitude Commands

REMOTE CONTROL

Syntax

meas:refl <refl>

Query Syntax

meas:refl?

Parameter

<refl>

Reference level in the currently selected unit (from the meas:refl:unit command).

Return parameter

<refl>

Returns reference level and unit.

Example

meas:refl 10

Sets the reference level to 10 dBm (for unit = dBm).

Query Example

Meas:refl?

>10 dBm