Spectrum Analyzer
GSP-730
USER MANUAL
GW Part No. 82SP-73000M01
ISO-9001 CERTIFIED MANUFACTURER
99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com
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
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
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GSP-730 User Manual
GSP-730 Specifications ........................... 108
GSP-730 Dimensions .............................. 110
Declaration of Conformity ....................... 111
INDEX .......................................................................... 112
2
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.
3
Safety Guidelines
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.
GSP-730 User Manual
4
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.
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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.
6
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
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.
GETTING STARTED
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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
480640 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
8
Package Contents
Opening the box
Contents
(single unit)
Main unit
Quick Start Guide
User Manual CD
Power cord x1 (region
dependent)
Calibration certificate
Check the contents before using the GSP-730.
GETTING STARTED
9
GSP-730 User Manual
dB
Enter
F 1
F 2
F 3
F 4
F 5
F 6
0
BK SP
kHz /
Sec
µ
mSec
MHz /
GHz /
Sec
1
4
7
2
5
8
3
6
9
Frequency
Span
Amplitude
Autoset
Marker
Peak
Limit Line
Meas
Search
BW
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
~
F6
The F1 to F6 function keys directly
correspond to the soft keys on the
right-hand side of display.
Frequency
Frequency
Sets the center frequency, start
frequency, stop frequency and
step frequency.
Span
Span
Sets the span, with options for full
span, zero span and last span.
Appearance
GSP-730 Front Panel
10
GETTING STARTED
Amplitude
Amplitude
Sets the amplitude reference level,
scale and amplitude units.
Autoset
Autoset
Automatically searches the peak
signal with maximum amplitude
and displays it with appropriate
horizontal and vertical scales.
Marker
Marker
The Marker key is used to
configure the markers, trace
markers as well as other related
functionality.
Peak Search
Peak
Search
Finds each maximum and
minimum peak. Used with the
Marker functions.
Meas
Meas
Configures ACPR and OCBW
measurements.
Limit Line
Limit Line
Sets and tests Pass/Fail limit lines.
BW
BW
Sets the resolution bandwidth.
Trace
Trace
Sets traces and trace related
functions.
Display
Display
The Display key configures the
split-screen windowing mode and
the basic display properties.
Memory
Memory
The memory key is used to save or
recall setup, trace and limit line
data.
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GSP-730 User Manual
Preset
Preset
The Preset key will restore the
spectrum analyzer to the factory
settings.
Hardcopy
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
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.
12
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
0
1
4
7
2
5
8
3
6
9
MHz /
mSec
dB
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.
13
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
14
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
15
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).
16
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
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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
18
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
19
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
20
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
21
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
dB
Enter
F 1
F 2
F 3
F 4
F 5
F 6
0
BK SP
kHz /
Sec
µ
mSec
MHz /
GHz /
Sec
1
4
7
2
5
8
3
6
9
Frequency
Span
Amplitude
Autoset
Marker
Peak
Limit Line
Meas
Search
BW
Trace
Display
Memory
Preset
Hardcopy
System
Hardcopy
Setup
GSP-730
150 kHz 3 GHz
Spectrum Analyzer
RF INPUT 50
+20dBm MAX.
MAX.DC ±25V
W
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.
22
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.
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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
0
1
4
7
2
5
8
3
6
9
MHz /
mSec
dB
Enter
GHz /
Sec
kHz /
µSec
BK SP
Parameter values can be entered using the
numeric keypad, the scroll wheel and the
arrow keys.
24
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.
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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
26
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
27
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
28
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