Instek Instek GSP-9330 Manual

Spectrum Analyzer

GSP-9330

USER MANUAL

ISO-9001 CERTIFIED MANUFACTURER

99 Washington Street
Melrose, MA 02176

Phone [phone]
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 .......................................................... 8

GSP-9330 Introduction .......................... 9

Accessories .......................................... 12

Appearance .......................................... 14

First Use Instructions .......................... 26

BASIC OPERATION ........................................................ 38

Frequency Settings ............................... 41

Span Settings ....................................... 45

Amplitude Settings .............................. 48

Autoset ................................................ 64

Bandwidth/Average Settings ................ 66

Sweep .................................................. 73

Trace .................................................... 81

Trigger ................................................. 89

Marker ................................................. 94

Display............................................... 108

System Settings ................................. 117

Preset ................................................ 121

ADVANCED OPERATION ............................................... 123

Measurement ..................................... 125

EMC Pre-Compliance Testing ............. 204

Limit Line Testing .............................. 223

Sequence ........................................... 230

Tracking Generator ............................ 235

Power Meter ...................................... 240

Demo Kit ........................................... 246

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GSP-9330 User Manual

FILE ............................................................................. 251

File Overview ..................................... 251

REMOTE CONTROL ...................................................... 268

Interface Configuration ...................... 269

FAQ .............................................................................. 284

APPENDIX .................................................................... 285

Replace the Clock Battery ................... 285

Glossary of Acronyms ........................ 286

GSP-9330 Default Settings ................. 288

Menu Tree .......................................... 290

GSP-9330 Specifications .................... 333

GSP-9330 Dimensions ....................... 341

Declaration of Conformity .................. 342

INDEX .......................................................................... 343

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 ensure 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.

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GSP-9330 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.

Ensure reverse power to the TG output terminal

does not exceed +30dBm.

Do not supply any input signals to the TG output.

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

4

SAFETY INSTRUCTIONS

Battery

CAUTION

Rating: 10.8V, 6 cell Li-ion battery

Turn off the power and remove the power cord

before installing or removing the battery.

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%

(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 70°C

Humidity: <90%

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GSP-9330 User Manual

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.

6

SAFETY INSTRUCTIONS

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.

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GSP-9330 User Manual

GSP-9330 Introduction ..................................................... 9

Main Features .................................................................................................................9

Accessories..................................................................... 12

GETTING STARTED

This chapter provides a brief overview of the
GSP-9330, the package contents, instructions for
first time use and an introduction to the front
panel, rear panel and GUI.

8

GETTING STARTED

Performance

9kHz~3.25GHz bandwidth

1Hz resolution

Nominal RBW accuracy of ±5% <1MHz,

±8% =1MHz

Video bandwidth 1Hz~1MHz (1-3-10 steps)

Amplitude measurement range: DANL~30dBm

(frequency dependent)

Input attenuation: 0 ~ 50dB, 1dB steps

Phase noise: < -88dBc/Hz@1GHz, 10kHz, typical

Features

1-3-10 step increments for RBW bandwidth

Three display modes: Spectrum, Topographic and

Spectrographic

Split window display

Built-in EMI filter

Auto Wake-up

Built-in preamplifier

Gate sweep

Marker Frequency counter

GSP-9330 Introduction

The GSP-9330 builds on the strong feature set of the GSP-9300 and
significantly increases performance in almost every aspect; making
this the most comprehensive and feature-rich spectrum analyzer
GW Instek has released.

Like the GSP-9300, the GSP-9330 features a split window display to
view data in spectrum, topographic or spectrographic views. There
are also a number of additional test functions such as 2FSK, 1PdB
and new dedicated EMC pretest functions for EMI and EMS testing.
Lastly, the GSP-9330 significantly reduces the sweep time.

Main Features

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GSP-9330 User Manual

Two operating modes: Spectrum and Power

Meter mode

EMI Pretest functions

SEM measurement

ACPR measurement

OCBW measurement

2FSK measurement

Phase jitter measurement

Harmonics measurement

P1dB measurement

Channel power measurement

Demodulation analyzer

Diverse marker functions and features with Peak

Table

Sequence function to automatically perform pre-

programmed sequential operations

EMI quasi-peak and average detector

Optional battery operation

10

GETTING STARTED

Interface

8.4 color LCD (800600)

On-screen menu icons

DVI-I video output

RS-232 with RTS/CTS hardware flow control

USB 2.0 with support for USB TMC

LAN TCP/IP with LXI support

Optional GPIB/IEEE488 interface

Optional 3G USB adapter for WLAN

Optional power meter adapter

IF output @ 886MHz

Headphone output

REF (reference clock) input/output BNC ports

Alarm/Open collector output BNC port

Trigger/Gate input BNC ports

RF N-type input port

Tracking generator output

DC +7V/500mA output SMB port

11

GSP-9330 User Manual

Standard
Accessories

Part number

Description
Region dependant

Power cord

N/A

User manual CD:
Includes: User manual,
Programming manual,
SpectrumShot quick start
guide, SpectrumShot
software, IVI driver

N/A

Quick start guide

N/A

Certificate of calibration

Options

Option number

Description

Opt1.

Tracking generator

Opt2.

Battery (11.1V/5200mAH
Li-ion battery)

Opt3.

GPIB interface (IEEE 488
bus)

Optional
Accessories

Part number

Description

ADB-002

DC BLOCK BNC 50R
10MHz-2.2GHz

ADB-006

DC BLOCK N TYPE 50R
10MHz-6GHz

ADB-008

DC BLOCK SMA 50R

0.1MHz-8GHz

GSC-009

Soft Carrying Case

GRA-415

6U Rack mount kit

Accessories

12

GETTING STARTED

Software Downloads

PC Software for Windows System (SpectrumShot quick
start guide, SpectrumShot software)

IVI Driver Supports LabView & LabWindows/CVI
Programming

Android System (“GSP-9330 Remote Control”, available
on Google play.)

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GSP-9330 User Manual

LOCAL

CONTROL

FILE AUXILIARY

Frequency

Autoset

Amplitude

Span

BW/AVG

Display

Trace

Sweep

Measure

Trigger

File

Recall

Save

Peak

Marker

Marker

System

Preset

Search

Quick

Save

EMC
Pretest

7

4

1

0

8

5

2

9

6

3

/

Enter

BK SP

Sweep
Mode

Limit

Line

Sequence

Option
Control

Fast/
Normal

F 4

F 3

F 2

F 1

F 6

F 5

F 7

RF INPUT 50

REV PWR +30dBm

TG OUTPUT 50

W W

500mA MAX .

DC 7V

OUTPUT +30 dBm MAX .

MAX.DC ±50V MAX.DC ±50V

9 kHz 3.25GHz

Spectrum Analyzer

GSP-9330

LCD
display

Main
keys

Function
keys

Control
keys

Power key

File keys

Auxiliary keys

Scroll wheel

Arrow keys

RF input
terminal

DC power
supply

Tracking
generator
output

Numeric,
Enter and
BK SP keys

USB A,
Micro SD
port

Marker keys

Preset/Local
and Quick
Save keys

MARKER

LCD display

800600 color LCD display. The display shows the
soft keys for the current function, frequency,
amplitude and marker information.

Function keys

F 1

~

F 7

The F1 to F7 function keys directly
correspond to the soft keys on the
right-hand side of display.

Main keys

Frequency

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

Appearance

GSP-9330 Front Panel

14

GETTING STARTED

Span

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

Amplitude

Sets the amplitude reference level,
attenuation, pre-amplifier
controls, scale and other options
for attenuation and scale.

Autoset

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

Control keys

BW/Avg

Sets the resolution bandwidth,
video bandwidth, average type
and turns the EMI filter on/off.

Sweep

Sets the sweep time and gate time.

Sweep

Mode

Toggles the Sweep Control
between Fast and Normal mode.

Measure

Accesses measurement options
such as ACPR, OCBW,
demodulation measurements,
SEM, TOI, 2FSK, phase jitter and
other advanced measurements.

EMC

Pretest

Dedicated EMI testing and setup
menu.

Trace

Sets traces and trace related
functions.

Limit

Line

Sets and tests Pass/Fail limit lines.

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GSP-9330 User Manual

Display

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

Trigger

Sets the triggering modes.

File

File

File utilities options

Save

Save the trace, state etc., and save
options.

Recall

Recall the trace, state etc., and
recall options.

Marker

Marker

Turns the Markers on/off and
configures the markers.

Marker

The Marker key positions the
markers on the trace.

Peak

Search

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

Auxiliary

Sequence

Access, set and edit program
sequences.

Option

Control

The Option Control key allows you
to setup optional accessories such
as the Tracking Generator, Power
Meter or Demo Kit.

System

The System key shows system
information, settings and other
system related functions.

16

GETTING STARTED

Preset / Local key

Preset

LOCAL

The Preset key will restore the
spectrum analyzer to the Factory
or User Preset settings.

The Preset key will also return the
instrument back to local control
after it has been in remote control
mode.

Quick

Save

The Quick Save utility allows you
to save either the state, trace,
display screen, limit line,
correction or sequence with only a
single press.

Power key

Turns the instrument on/off. On =
yellow, off = blue.

Scroll wheel

Edit values, select listed items.

Arrow keys

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

RF input terminal

RF INPUT 50

W

+30dBm MAX.

MAX.DC ±50V

RF input port. Accepts RF inputs.

Maximum input: +30dBm

Input impedance: 50Ω

Maximum DC voltage: ±50V

N-type: female

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GSP-9330 User Manual

DC power supply

500mA MAX.

DC 7V

OUTPUT

SMB port supplies power for
optional accessories.

DC +7V

500mA Max.

Numeric keypad

7

4

1

0

8

5

2

9

6

3

/

Enter

BK SP

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

TG output port

REV PWR +30dBm

TG OUTPUT 50

W

MAX.DC ±50V

The Tracking Generator (TG)
output source.

N-type: female

Input impedance: 50Ω

Output power: -50dBm to 0dBm

Maximum reversed power:

+30dBm

USB A, Micro SD

USB A port, Micro SD port for
saving/recalling settings/files.

18

Rear Panel

AC 100 240V

50 60 Hz 82W MAX.

AC 100 240V

50 60 Hz 82W MAX.

USB-B,
LAN port

FanDVI-I

port

IF OUT

TRIG IN/GATE

IN port

ALARM OUT/

OPEN

COLLECTOR

REF OUT Battery cover/

Optional
battery pack

REF IN

RS232 port

GPIB port
(optional)

Power
socket

RS232

RS232 9 pin DSUB port.

IF OUT

SMA IF Out port.

DVI-I

DVI video out port. Supports SVGA
(800X600) @ 60Hz.

Fan

Power Socket

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

GETTING STARTED

19

GSP-9330 User Manual

Battery pack

Voltage: 10.8V
Capacity: 5200mAH

REF IN

BNC female reference input.

REF OUT

BNC female reference output:
10MHz, 50Ω impedance

Security Lock

ALARM OUT

BNC female open collector Alarm
output.

TRIG IN/GATE IN

BNC female 3.3V CMOS trigger
input/gated sweep input.

Phone

3.5mm stereo headphone jack
(wired for mono operation)

USB B

USB B Device port. USB 1.1/2.0

LAN

RJ-45 10Base-T/100Base-Tx

20

Display

Scale and
Reference
level

Attenuation
level

Date
and time

Function
menu

Marker
information

Trace/
Detection
settings

Unassigned
setting
icons

Sweep,
Trigger,
Pre-amp
and USB
settings

Frequency/Bandwidth
settings

Status icons

Sweep
settings

Traces and
waveforms

LXI icon

Entry /
Message
area

Sweep
progress
bar

Scale

Displays the vertical scale of the vertical grid. For
details, see page 50.

Reference level

Displays the reference level. For details, see page

48.

Attenuation

Displays the vertical scale (attenuation) of the
input signal. For details, see page 49.

Date/Time

Displays the date and time. See page 118 for
details.

Marker
information

Displays marker information. For details see page

94.

GETTING STARTED

21

GSP-9330 User Manual

LXI icon

This icon indicates the status of the LXI connection.
For details, see page 270.

Function menu

Soft menu keys associated with the F1 to F7
function keys to the right of the display.

Sweep Mode

This icon displays the sweep mode,
as set by the Sweep Mode key. See
page 79.

Sweep settings

Sweep icon that shows the sweep
status. See page 72 for details.

Trace and
detection settings

Trace icon that shows the trace type
and the detection mode used for
each trace. See from page 81 for
details.

Blank

Unassigned setting icons.

Trigger settings

Trigger icon that shows the trigger
status. See page 89 details.

Pre-amp settings

Pre-amplifier icon that shows the
Pre-amplifier status. See from page
62 for details.

USB settings

Displays the status of the USB A
port.

Status Icons

Displays the interface status, power source status
and alarm status, etc. See the Status Icon Overview
on page 24 for a list of the status icons.

22

GETTING STARTED

Frequency/
Bandwidth
settings

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

Entry/Message
area

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

Trace and
waveforms

Main display showing the input signals, traces
(page 81), limit lines (223) and marker positions
(94).

Sweep progress
bar

The sweep progress bar shows the progress of
slow sweeps (greater than 2 seconds).

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GSP-9330 User Manual

3G Adapter

Indicates that the 3G adapter is
installed and turned on.

Demo Kit

Indicates that the demo kit is
installed and turned on.

PreAmp

Indicates that the pre amplifier is
on.

AC

Shown when running on AC
power.

AC Charge

Shown when the AC power is
charging the battery.

Alarm Off

Alarm buzzer output is currently
off.

Alarm On

Alarm buzzer output is currently
on.

Amplitude Offset

Indicates that the amplitude-shift is
active. This icon appears when
amplitude-related functions are
used:
Reference level offset
Amplitude Correction
Input Z = 75Ω and Input Z cal >0

Battery indicator

~

Indicates the battery charge.

Bandwidth
Indicator

Indicates that the RBW or VBW
settings are in manual mode.

Status Icon Overview

24

GETTING STARTED

Average

Indicates that the Average function
is active.

External Lock

Indicates that the system is now
locked and refers to the external
reference input signal

External Trigger

External trigger signal is being
used.

Math

Trace math is being used.

Sequence
Indicator

Shown when a sequence is running.

Sweep Indicator

Indicates that the sweep time is
manually set.

Tracking
generator

Indicates that the tracking generator
is turned on.

TG Normalization

Indicates that the tracking generator
has been normalized.

Wake-up clock

Indicates that the wake-up clock is
turned on.

USB

Indicates that a USB flash drive is
inserted into the front panel and is
recognized.

Micro SD

Indicates that a micro SD card is
inserted into the front panel and is
recognized.

25

GSP-9330 User Manual

Description

The GSP-9330 has two adjustable rubber feet
that can used to position the instrument into
two preset orientations.

Upright Position

Tuck the feet under
the bottom of the
instrument to stand
the instrument
upright.

Leaning Position

Pull the feet back to
have the instrument
leaning back.

First Use Instructions

Use the procedures below when first using the GSP-9330 to tilt the
stand, insert the battery pack, power up the instrument, set the
internal clock, set the wake-up clock, update the firmware and to
restore the default settings. Lastly, the Conventions sections will
introduce you to the basic operating conventions used throughout
the user manual.

Tilting the Stand

26

GETTING STARTED

Description

The GSP-9330 has an optional battery pack.
The battery should be inserted before power is
connected to the AC power socket and before
the unit is turned on.

Steps

1. Ensure the power is off and the AC power is

disconnected.

2. Remove the battery cover.

3. Insert the battery as shown in the diagram

below.

4. Replace the battery cover.

Display Icon

The battery icon is displayed when GSP­9330 is running on battery power.

Insertion Diagram

Inserting the Battery Pack

27

Power UP

Steps

1. Insert the AC power cord into the power
socket.

2. The power button exterior will be lit blue to
indicate that the GSP-9330 is in standby mode.

3. Press the power button for a few seconds to
turn the GSP-9330 on.

4. The power button will turn orange and the
GSP-9330 will start to boot up.

Note

It takes a little less than 1 minute for the GSP-9330
to fully startup.

GSP-9330 User Manual

28

Power Down

Description

The GSP-9330 has two methods to power
down: Normal and Forced Power Down.

The normal power down method will save the
system state and end any running processes.
The state is saved for the next time the
instrument is turned back on.

The forced power down method only does a
minimum state save.

Normal Power
Down

Press the power button. The system will
automatically handle the power down
procedure in the following order:

The system state is saved.

Outstanding processes are closed in

sequence.

The LCD backlight is turned off.

The system enters standby mode (the

power key changes from orange to
blue).

Note

The process takes ~10 seconds.

Forced Power
Down

Press and hold the power button for ~4
seconds until the system turns off and the
power button turns blue.

Note

The forced power down mode might cause the
GSP-9330 to perform a longer system check the
next time it is powered up.

GETTING STARTED

29

Setting the Date, Time and Wake-Up Clock

Description

The GSP-9330 can be setup to power-up
automatically using the Wakeup Clock
function. This feature is useful to wake-up the
instrument early and eliminate settling time.

System Date

Example: Set the System Date to July 1, 2016

1. Press

System

>Date/Time[F4]>Set

Date[F1]>Year[F1].

2. Press 2016>Enter[F1].

3. Press Month[F2]>7>Enter[F1].

4. Press Day[F3]>1>Enter[F1].

5. Press Return[F7].

Note

The System Date will be shown at the top of the
display.

System Time

Example: Set the System Time to 9.00 AM

1. Press

System

>Date/Time[F4]>Set

Time[F2]>Hour[F1].

2. Press 9>Enter[F1].

3. Press Minute[F2]>0>Enter[F1].

4. Press Second[F3]>0>Enter[F1].

5. Press Return[F7].

GSP-9330 User Manual

30

GETTING STARTED

Note

The System Time will be shown at the top of the
display.

System Wake-Up
Clock

Example: Set the GSP-9330 to wake up at 9.00
AM

1. Press

System

>Date/Time[F4]>Wake-Up

Clock[F3]>Select Clock[F1].

2. Press Clock 1[F1] ~ Clock 7[F7] to choose a clock
(1 ~ 7).

3. Press State[F2] to turn the wake up clock
on/off.

4. Press Hour[F3]>9>Enter[F1].

5. Press Minute[F4]>0>Enter[F1].

6. Press [F5] and choose Rept. (Repeat) or Single.

7. Press Select Date[F6] and select a day.

8. Press Return[F7] to save the Wake-Up Clock
settings.

Note

The system time is kept with the CR2032 clock
battery. If the system time/ wake up clock can no
longer be set, please replace the clock battery. See
page 285.

31

GSP-9330 User Manual

Description

The GSP-9330 allows the firmware to be
updated by end-users. Before using the GSP­9330, please check the GW Instek website or
ask your local distributor for the latest
firmware.

System version

Before updating the firmware, please check the
firmware version.

1. Press

System

>System Information[F1].

2. The firmware will be listed on the display.

Firmware: V3.0.0.0

3. Press any other main/control/file/marker

/auxiliary key to exit out of the System
Information screen.

4. To upgrade the firmware, insert the new

firmware onto a USB flash drive or Micro SD
card and put the drive/card into the
appropriate front panel port. The firmware
files should be located in a directory named
“gsp932”.

Firmware Update

32

5. Press

System

>More 1/2[F7]>Upgrade[F2].

6. The spectrum analyzer will automatically find
the firmware on the USB flash drive and start
to update the firmware. When finished, the
message “Upgrade is finished” will be shown
at the bottom of the screen followed by
“Rebooting”.

Rebooting

7. The system will automatically restart after the
rebooting message.

Note

The upgrade process may take a few minutes.

Restoring Default Settings

Description

The factory default settings or user presets can
be easily restored using the Preset key on the
front panel. By default, the factory default
settings are restored with the Preset key.

For details on how to configure the preset
settings, please see page 121.

Steps

1. Press

Preset

.

2. The spectrum analyzer will load the preset
settings.

GETTING STARTED

33

GSP-9330 User Manual

Soft Menu keys

The F1 to F7 function keys on the right side of
the display correspond directly to the soft­menu keys on their left.

LOCAL

CONTROL

FILE AUXILIARY

Frequency

Autoset

Amplitude

Span

BW/AVG

Display

Trace

Sweep

Measure

Trigger

File

Recall

Save

Peak

Marker

Marker

System

Preset

Search

Quick
Save

EMC
Pretest

7

4

1

0

8

5

2

9

6

3

/

Enter

BK SP

Sweep

Mode

Limit

Line

Sequence

Option
Control

Fast/
Normal

F 4

F 3

F 2

F 1

F 6

F 5

F 7

RF INPUT 50

REV PWR +30dBm

TG OUTPUT 50

W W

500mA MAX .

DC 7V

OUTPUT +30dBm MAX .

MAX.DC ±50V MAX.DC ±50V

9 kHz 3.25GHz

Spectrum Analyzer

GSP-9330

MARKER

Soft-menu keys

F1 ~ F7 function keys

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.

Toggle State

Pressing this menu key will toggle the state.

Conventions

The following conventions are used throughout the user manual.
Read the conventions below for a basic grasp of how to operate the
GSP-9330 menu system and front panel keys.

34

GETTING STARTED

Toggle State &
Input Parameter

Pressing this menu key will allow you to toggle
the state of the function between Auto and
Man(ual) state. When in the Man 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.

Sub Menu

Pressing this menu key will enter a submenu.

Sub Menu to
select parameter

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

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.

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GSP-9330 User Manual

Parameter input

LOCAL

Preset

Quick

Save

7

4

1

0

8

5

2

9

6

3

/

Enter

BK SP

Numerical keypad

Scroll wheel

Directional arrow keys

Backspace, Enter keys

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

Using the numeric
keypad

When prompted to enter a parameter, use the
number keys (0~9), the decimal key (.) and the
sign key (+/-) to enter a value. After a value
has been entered, the soft-menu 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. Values can
include decimal points for non-integer values
or for entering dot-decimal notation for IP
addresses.

Edited parameter

Span: 10

Back Space

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

36

GETTING STARTED

Using the scroll
wheel

Use the scroll wheel to alter the current value.
Clockwise increases the value, anti-clockwise
decreases the value.

Directional arrows

Use the directional arrows to select discrete
parameters or to alter values by a coarser
resolution than the scroll wheel. Left decreases
the value, right increases the value.

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GSP-9330 User Manual

Frequency Settings .......................................................... 41

Center Frequency ....................................................................................................... 41

Start and Stop Frequency .......................................................................................... 42

Center Frequency Step .............................................................................................. 43

Frequency Offset ........................................................................................................ 44

Span Settings ................................................................. 45

Span .............................................................................................................................. 45

Full Span ...................................................................................................................... 46

Zero Span .................................................................................................................... 46

Last Span ...................................................................................................................... 47

Amplitude Settings ......................................................... 48

Reference Level .......................................................................................................... 48

Attenuation .................................................................................................................. 49

Scale/Div ..................................................................................................................... 50

Auto Scale .................................................................................................................... 50

Scale Type .................................................................................................................... 51

View Scale .................................................................................................................... 51

Vertical Scale Units .................................................................................................... 53

Reference Level Offset .............................................................................................. 53

Amplitude Correction ................................................................................................ 54

Create a Correction Set ............................................................................... 55

Amplitude Correction On/Off .................................................................. 57

Delete Correction Set .................................................................................. 58

Save Correction Set to Memory ................................................................. 58

Recall Correction Set From Memory ........................................................ 60

Input Impedance ........................................................................................................ 61

Input Impedance Calibration ................................................................................... 61

Using the Built-in Pre-Amplifier ............................................................................. 62

Autoset ........................................................................... 64

Using Autoset ............................................................................................................. 64

BASIC OPERATION

38

BASIC OPERATION

Limiting the Autoset Vertical Search Range ..........................................................65

Limiting the Autoset Horizontal Search Range .....................................................65

Bandwidth/Average Settings ........................................... 66

Resolution Bandwidth Setting (RBW) .....................................................................66

Video Bandwidth Settings (VBW) ...........................................................................68

VBW/RBW Ratio .......................................................................................................68

Average Trace ..............................................................................................................69

Average Type ...............................................................................................................71

EMI Filter .....................................................................................................................72

Sweep ............................................................................ 73

Sweep Time ..................................................................................................................73

Single Sweep .................................................................................................................74

Continuous Sweep ......................................................................................................75

Gated Sweep Overview ..............................................................................................75

Using the Gated Sweep Mode ..................................................................................77

Sweep Control / Sweep Mode ..................................................................................79

Trace ............................................................................. 81

Selecting a Trace ..........................................................................................................81

Trace Math ...................................................................................................................83

Trace Detection Mode ...............................................................................................85

Trigger ........................................................................... 89

Selecting a Trigger Type .............................................................................................89

Free Run Mode ..............................................................................................89

Activate Video Trigger .................................................................................89

Activate External Trigger .............................................................................91

Selecting the Trigger Mode .......................................................................................92

Set the Trigger Delay Time .......................................................................................93

Marker ........................................................................... 94

Activating a Marker.....................................................................................................95

Activate a Normal Marker ...........................................................................95

Move Marker Manually ................................................................................96

Move Marker to Preset Locations ..............................................................96

Activate Delta Marker ..................................................................................97

Move Delta Marker(s)Manually ..................................................................98

Marker Functions ........................................................................................................99

Marker Noise .................................................................................................99

Frequency Counter .................................................................................... 100

Move Marker to Trace ............................................................................................ 101

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GSP-9330 User Manual

Show Markers in Table ............................................................................................ 102

Peak Search ................................................................................................................ 103

Move Marker to Peak ................................................................................ 103

Move Marker and Peak to Center ........................................................... 103

Search for Peaks ......................................................................................... 104

Peak Configuration .................................................................................... 105

Peak Table ................................................................................................................. 106

Display ......................................................................... 108

Adjusting the LCD Brightness ............................................................................... 108

Turning the LCD Backlight Off ............................................................................ 108

Setting a Display Line (Reference Level Line) .................................................... 109

Using the Video Out Port ....................................................................................... 109

Setting the Display Mode ........................................................................................ 110

Spectrogram and Topographic Markers ............................................................... 113

Split Spectrum View ................................................................................................ 115

System Settings ............................................................ 117

System Information ................................................................................................. 117

Error Messages ......................................................................................................... 117

Set the System Language ......................................................................................... 118

Set the Date and Time ............................................................................................. 118

Display the Date and Time on the Screen ........................................................... 119

Using the Wake-Up Clock ...................................................................................... 119

Alarm Output ............................................................................................................ 120

Preset ........................................................................... 121

Using the Preset Key ............................................................................................... 121

Save the User Preset Settings ................................................................................. 121

Preset Type Settings ................................................................................................. 122

Power on Preset Settings ........................................................................................ 122

40

BASIC OPERATION

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:
Resolution:
Default

0kHz~3.25GHz
1Hz

1.625GHz

Display

Center frequency

Set Center Frequency

Frequency Settings

Center Frequency

41

Start and Stop Frequency

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

Freq[F2] and enter the frequency and unit.

2. To set the stop frequency, press

Frequency

> Stop

Freq[F3] and enter the frequency and unit.

Range:
Resolution:
Default Start frequency:
Default Stop frequency:

0kHz~3.25GHz
1Hz
0Hz

3.25GHz

Display

Start Frequency

Start Frequency

Stop 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), otherwise the span
will be automatically set to 100Hz.

GSP-9330 User Manual

42

BASIC OPERATION

Description

The CF Step function sets the step size of the
center frequency when using the arrow keys or
scroll wheel.

When the scroll wheel or arrow keys or are
used to alter the center frequency, each
turn/press will move the center frequency by
the step size specified by the CF Step function.

In auto mode, the center frequency step size is
equal to 10% (1 division) of the span.

Operation

1. Press

Frequency

> CF Step[F4] and set the CF Step to

Auto or Man.

2. If Man was selected, set the frequency and unit

of the center frequency step size.

Manual Range:
Auto range:

0Hz~3.25GHz
1/10 of span frequency

Display

CF Step size

Center Frequency Step

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GSP-9330 User Manual

Description

The Freq Offset function allows you to add an
offset to the Center, Start and Stop frequencies
as well as the marker frequencies. The offset
value does not affect displaying the trace on the
display.

Operation

1. Press

Frequency

>Freq Offset[F5] and set the offset

value.

The Center, Start, Stop and Marker frequencies
are updated accordingly.

Offset Range:

0Hz~100GHz

Display

Frequency

Offset

Frequency Offset

44

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:
Resolution:
Default Span:

0kHz~3.25GHz
1Hz

3.25GHz

Display

Span

Set Span

Span Settings

Span

45

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 3.25GHz 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-9330 User Manual

46

BASIC OPERATION

Display

Time domain

0Hz Span

Example: Amplitude modulation

Note

The measurement functions such as TOI, SEM,
CNR, CTB, CSO, ACPR, OCBW, phase, Jitter,
Harmonics, NdB, P1dB and other measurement
functions are not available with the zero span
setting:

Description

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

Operation

1. Press

Span

> Last Span[F4].

Last Span

47

GSP-9330 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 and unit.

Range:
Units:
Resolution:

-120dBm ~ 30dBm
dBm, -dBm, W, V, dBV
1dBm

Display

Reference LevelRef Level reading

Amplitude Settings

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

Reference Level

48

Attenuation

Description

The attenuation of the input signal level can be
set to automatic (Auto) or manual (Man). When
the attenuation is set to Man, the input
attenuator can be changed manually in 1dB
steps.

Operation

1. Press

Amplitude

> Attenuation[F2] and select Auto

or Man.

2. If Man was selected, enter the attenuation level

and unit.

Range:
Units:
Resolution:

0dBm ~ 50dBm
dBm
1dB

Display

Attenuation level

BASIC OPERATION

49

Scale/Div

Description

Sets the logarithmic units for the vertical
divisions when the scale is set to Log.

Operation

1. Press

Amplitude

> Scale/Div[F3] repeatedly to select

the vertical division units.

Unit Range:

10, 5, 2, 1

Display

Scale

Note

The Scale/Div function is only selectable when the
scale is set to Log (logarithmic).

Description

The Auto Scale function will automatically set
the Scale/Div, Reference level and Attenuation
(if set to Auto) to best display the spectrum.

Operation

1. Press

Amplitude

> Auto Scale[F4] to turn the Auto

Scale function on.

Note

This function is applicable to both the linear and
logarithmic scales.

GSP-9330 User Manual

Auto Scale

50

Scale Type

Description

Sets the vertical scale in linear or logarithmic
units.
By default the linear scale is set to volts and the
logarithmic scale is set to dBm.

Operation

1. Press

Amplitude

> More[F7] > Scale Type[F2] and set

the vertical scale to Log or Lin.

Note

If the unit scale is changed (i.e. dBm → volts), the

displayed

vertical scale type will remain in the set

linear or logarithmic setting.

Description

The Scale function turns the vertical scale
on/off. The value of each graticule division is
displayed with the same units that are used for
the Ref Level settings.

Operation

1. Press

Amplitude

> Scale[F5] to toggle the Scale on or

off.

2. Press Scale Pos.[F6] to toggle the position of the

scale when on.

Scale position:

Left, Center, Right

View Scale

BASIC OPERATION

51

GSP-9330 User Manual

Display

Scale

Left

The vertical scale is displayed on the left-hand side
by default.

52

BASIC OPERATION

Description

Change the vertical units for both linear or
logarithmic scales.

Operation

1. Press

Amplitude

> More[F7]>Y Axis[F1] and then

choose the desired units.

2. The units are changed accordingly.

Units:

dBm, dBmV, dBuV,
Watts, Volts

Description

The Reference Level Offset function sets an
offset value to the reference level to compensate
for any loss or gain from an external network or
device.
The offset value does not affect the input
attenuation or the on-screen trace.
This setting will change the reference level
readout, the scale readout and the marker
readout.

Operation

1. Press

Amplitude

> More[F7]>RefLvlOffset[F4] and set

the offset level and unit.

2. To remove the offset level, set the reference

offset to 0 dB.

Range:

0dB ~ 50dB

Display Icon

The AMP icon is displayed at the bottom
of the screen.

Vertical Scale Units

Reference Level Offset

53

GSP-9330 User Manual

Example:

Ref: 0dBm

Before reference level offset(offset: 0dB)

Ref: 10dBm

Reference level

offset: 10dB

After reference level offset (offset: 10dB)

Description

Amplitude correction adjusts the frequency
response of the spectrum analyzer by altering
the amplitudes at specified frequencies. This
allows the spectrum analyzer to compensate for
loss or gain from an external network or device
at certain frequencies.

Range

Correction Sets:

5 sets of 30 points

Amplitude:

-40dB to +40dB

Amplitude Resolution:

0.1dB

Frequency:

9kHz to 3.25GHz

Frequency Resolution:

1Hz

Amplitude Correction

54

BASIC OPERATION

Display

Correction points

Original waveform

Corrected

output

Example: The diagram above shows how amplitude
correction is used to compensate for any losses or
gains at specific frequencies.

Description

The GSP-9330 can create and edit up to 5 sets of
correction points. The correction points and
associated values are all tabulated for ease of
use.

Operation

1. Press

Amplitude

> More[F7]>Correction[F3]> Select

Correction[F1] and choose a correction set to

edit/create.

Correction set:

1~5

Create a Correction Set

55

GSP-9330 User Manual

2. Press Edit[F3].

The GSP-9330 will split into two screens. The
top screen will show the waveform and the
bottom screen will provide an overview of the
correction points.

Spectrum display

Correction points

Frequency of

selected point

3. Press Point Num[F1] and choose a point number

to edit. Point numbers can only be created in
order. For example Point Num 2 can only be
selected after Point Num 1 is created, and point
Num 3 can only be selected after Point Num 2
is created and so on.

Point Num:

1~20

4. Press Frequency[F2] and choose the frequency of

the selected point.

5. Press Gain Offset[F3] and choose the amplitude

of the selected point. The units will be the same
as those used for the vertical scale.

56

BASIC OPERATION

The frequency of the point values are displayed
in the correction table on the bottom display.

Correction Table

6. Repeat steps 3 to 5 for any other correction

points.

7. To delete the selected point, press Delete

Point[F6].

8. Press Return[F7]>Save Correction[F5] to save the

correction set.

Note

Note that the correction points are automatically
sorted by frequency (low → high).
The correction set must be saved before it can be
turned on.

The frequency values

displayed

in the correction
table are rounded down for display purposes only.
The actual frequency for each point can be seen in
the Frequency soft-key.

Description

Any one of the 5 correction sets can be turned
on.

Activate
Correction

1. Press

Amplitude

> More[F7]>Correction[F3]>

Correction Set[F1] and choose a correction set.

Correction Set:

1~5

Amplitude Correction On/Off

57

GSP-9330 User Manual

2. Press Correction[F2] and toggle correction on.

Deactivate
Correction

1. Press

Amplitude

> More[F7]>Correction[F3]>

Correction[F2] to turn correction back off.

Operation

1. Press

Amplitude

> More[F7]>Correction[F3]>

Correction Set[F1] and choose the correction set

to delete.

Correction Set:

1~5

2. Press Delete Correction[F6].

The selected correction set will be deleted.

Operation

1. Press

Save

> Save To[F1] and choose the save

location.

Location:

Register, Local, USB, SD

2. Press Type[F2]> Correction[F5].

3. Press Data Source[F3] and choose a correction.

Correction Set:

Correction 1~5

4. To name the file, press Name[F5].

Name the selected file using the
F1~F7 keys, as shown below or use
the numeric keypad to enter
numbers.

7 8 9

654

1 2 3

/0

Delete Correction Set

Save Correction Set to Memory

58

Limitations:

No spaces
Only 1~9, A~Z, a~z characters allowed

ABCDE

FGHIJ
KLMNO
PQRST
UVWXY

Z

A

C
D
E

B

Lowercase

Return

a

c
d
e

b

Return

Name>

Return

5. The filename appears on the bottom of the
screen as it is created.

Filename

Press

Enter

to confirm the filename.

Note

If the file name is not user-defined, a file name will
be automatically created in the following format:

File name: type_data source_file number.file
extension
Example: Correction1_0.cor

The file number parameter is incremented each
time the same file type is created.

BASIC OPERATION

59

GSP-9330 User Manual

6. Press Save Now[F7].

7. The correction set will be saved to the selected

location. For more information on Save and
Recall, please see page 261.

Operation

1. Press

Recall

> Recall[F1] and choose the recall

location:

Location:

Register, Local, USB, SD

2. Press Type[F2]> Correction[F5].

3. Use the scroll wheel to select a previously saved

correction set from the file directory.

4. Press Destination[F3] and choose a correction

set.

Correction Set:

Correction 1~5

5. Press Recall Now[F4].

6. The current correction set will be recalled from

the selected location. For more information on
Save and Recall, please see page 261.

Recall Correction Set From Memory

60

Input Impedance

Description

Sets the input impedance to 75Ω or 50Ω.

Operation

1. Press

Amplitude

> More[F7]> More[F7] > Input Z[F1]

to toggle the input impedance.

Range:

75Ω, 50Ω

Description

When an external impedance converter module
(optional accessory ADP-101) is used to convert
the impedance of a device from 50Ω to 75Ω,
some external loss can be induced. The Input Z
Cal function can be used to compensate for
these losses with an offset value.

Note

The Input Z Cal function is only functional when
the input impedance is set to 75Ω.

Operation

1. Press

Amplitude

> More[F7]>More[F7]>Input Z

Cal[F2] and set the impedance offset.

Range:
Resolution:

0dB to +10dB
1dB

Display Icon

The AMP icon is displayed at the bottom
of the screen when Input Z Cal0dB and
Input Z is = 75Ω.

Input Impedance Calibration

BASIC OPERATION

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GSP-9330 User Manual

Description

The built-in pre-amplifier boosts weak input
signals, such as EMI testing signals, to levels
that are easy to handle, over the entire
frequency range. The built-in pre-amplifier on
the GSP-9330 has a nominal gain of 20dB.

In the Auto setting, the pre-amplifier will be
automatically turned on when the reference
level is less than -30dBm. When the reference
level is greater than -30dBm, the pre-amplifier
is turned off. The bypass setting turns the pre­amplifier off.

Operation

1. Press

Amplitude

> More[F7]>Preamp[F5] to toggle

the Preamp state.

Range:

Auto, Bypass

Display Icon

The Pr-amp icon indicates that the pre
amplifier is on.

Example:

Pr-amp icon

Using the Built-in Pre-Amplifier

62

BASIC OPERATION

Note

When the pre-amplifier is on, the attenuator
becomes fixed at 0dB (i.e. Attenuation = 0dB).

63

Operation

1. Press

Autoset

> Autoset[F1].

Autoset Range

Amplitude:
Span:

-80dBm ~ +20dBm

0Hz ~ 3.25GHz

Example:

Before Autoset, preset state

After Autoset

GSP-9330 User Manual

Autoset

The Autoset function searches the peak signals in two stages (full
span & 0Hz - 100MHz limited span), picks the signal peak with the
maximum amplitude, and then shows it in the display.

Using Autoset

64

Note

RBW, VBW and sweep settings are reset to Auto
when the Autoset function is used.

Limiting the Autoset Vertical Search Range

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.

2. Enter the amplitude limit and unit for the
Autoset search.

Range:

−60 to +20dBm

Note

See page 50 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:

100Hz to 3.25GHz

BASIC OPERATION

Limiting the Autoset Horizontal Search Range

65

GSP-9330 User Manual

Description

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).

SPAN-RBW Auto
relationship

When the RBW is set to Auto, the RBW is
determined by the frequency span. This is
shown in the table below.

SPAN-RBW
relationship in
Auto mode.

Span (Hz) ≤

RBW (Hz)

Span (Hz) ≤

RBW (Hz)

200 1 650k

3000

650 3 2M

10000

2k

10

6.5M

30000

6.5k

30

20M

100000

20k

100

65M

300000

200k

1000

200M

1000000

Bandwidth/Average Settings

BW/AVG key sets the resolution bandwidth (RBW), video
bandwidth (VBW) and averaging functions. The resolution, sweep
time, and averaging are in a trade-off relationship, so configuration
should be done with care.

Resolution Bandwidth Setting (RBW)

66

BASIC OPERATION

Operation

1. Press

BW/Avg

> RBW[F1] and set the RBW to

Auto or Man.

2. Set the resolution bandwidth and unit for Man
mode.

Mode:
Frequency Range(3dB):

Frequency Range(6dB):

Auto, Man
1Hz~1MHz (1-3-10 step)

200Hz, 9kHz, 120kHz,
1MHz

Note

If the setting is in Auto mode, using the scroll
wheel or arrow keys will automatically set the RBW
to manual mode.

Display Icon

The BW icon is displayed at the bottom of
the screen when the RBW is in Man mode.

Note

If the RBW settings have an asterisk (*), it
indicates that the -6dB filters are used.

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GSP-9330 User Manual

Description

VBW (Video Bandwidth) defines the
smoothness of the trace on the display.
Combined with RBW, VBW defines the ability
to sort out the target signal from surrounding
noise or adjacent peaks.

Operation

1. Press

BW/Avg

> VBW[F2] and set the VBW to

Auto or Man.

2. Set the video bandwidth and unit for Man

mode.

Mode:
Frequency Range(3dB):

Auto, Man
1Hz~1MHz (1-3-10 step)

Display Icon

The BW icon is displayed at the bottom of
the screen when the VBW is in Man mode.

Description

The VBW/RBW function is used to view the
ratio between the video bandwidth and the
resolution bandwidth.

The VBW/RBW ratio is altered by setting the
RBW and or VBW settings, see page 66 & 68
respectively.

View VBW/RBW
ratio

1. Press

BW/Avg

.

2. The ratio is displayed on the VBW/RBW[F3] soft

key.

Video Bandwidth Settings (VBW)

VBW/RBW Ratio

68

Display

VBW/RBW

Ratio

Tip

Signals that are masked by the noise floor level
should have a ratio of less than 1 to smooth the
noise out.

Signals with strong frequency components should
use a ratio equal to or greater than 1.

Average Trace

Description

The Average function averages the 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

BW/Avg

> Average[F4] and toggle Average

on or off.

2. Set the number of averages.

Range:
Default:

4 ~ 200
20

Display Icon

The AVG icon is displayed at the bottom of
the screen when the Average function is
on.

BASIC OPERATION

69

Example:

Average:Off

Number of traces that

have been averaged

Average: On (20)

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70

Average Type

Description

The Average Type function determines how the
GSP-9330 determines the average value.

LOG Average: Averages the trace points on a
logarithmic scale.

Volt Average: Averages the amplitudes of the
trace points on a linear voltage scale.

Power Average: Averages the trace points on a
logarithmic scale in watts.

Operation

1. Press

BW/Avg

> Average Type[F5] and choose the

average type.

Range:

Default:

LOG Power, Volt
Average, Power Average
LOG Power

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71

EMI Filter

Description

The built-in EMI filter is used for specific
measurement situations such as EMI average
detection, where a higher level of sensitivity is
required compared to the standard
configuration. When turned on, the RBW is set
to -6dB, indicated by an asterisk (*).

When any measurement functions are turned
on (see page 123 for details), the EMI filter is
automatically disabled. Conversely if the EMI
filter is turned on, any measurement functions
are turned off.

Operation

1. Press

BW/Avg

> EMI Filter[F6] and toggle EMI

filter on or off.

Note

See the specifications for details on the EMI filter,
page 333.

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BASIC OPERATION

Description

Sweep time defines the length of time the
system takes to "sweep” the current frequency
span. Note, however, that sweep time and
RBW/VBW are in a trade-off. Faster sweep
times update the display more frequently but
make RBW and VBW wider, reducing the
capability to separate signals at close
frequencies.

Operation

1. Press

Sweep

> Sweep Time[F1] and toggle the

Sweep time to Auto or Man.

2. Set the sweep time for the Man mode.

Mode:
Range:

Resolution:

Auto, Man

1.14ms ~ 1000s (span=100Hz,

RBW=3kHz)

46.6us ~ 1000s (span=0Hz,

RBW= 1MHz)

Display Icon

The SWT icon will be displayed at the
bottom of the screen when the sweep is in
manual mode.

Sweep

The GSP-9330 has a number of sweep options including setting the
sweep time, the sweep run mode (continuous, single) and sweep
mode (fast, slow). The GSP-9330 also has gated sweep modes.

Sweep Time

73

Single Sweep

Description

The single sweep function is used to perform a
single sweep. When Sweep Single is pressed the
GSP-9330 will perform a single sweep and then
stop.

Operation

1. Press

Sweep

> Sweep Single[F2] to put the

spectrum analyzer into single sweep mode.

2. Press Sweep Single[F2] again to perform a single
sweep.

When a single sweep has been performed, you

can still perform frequency, span, amplitude and
other functions on the “frozen” trace.

Display Icon

The Sweep Single icon is displayed on the
right-hand side of the screen when the
sweep is in single mode.

Note

You must wait for the single sweep to finish before
pressing the Single Sweep key again.

If a setting is changed whilst the spectrum analyzer
is still sweeping, the single sweep will immediately
start over.

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Continuous Sweep

Description

The GSP-9330 has two main sweeping run
modes: single and continuous. Use the
continuous mode to have the sweep constantly
updated.

Operation

1. Press

Sweep

> Sweep Cont[F3] to put the
spectrum analyzer into continuous sweep
mode.

Display Icon

The Sweep Cont icon is displayed on the
right-hand side of the screen when the
sweep is in continuous mode.

Note

The GSP-9330 will now continuously sweep unless
the mode is changed to single sweep mode or if
the system is waiting for a trigger condition.

Description

The Gated Sweep mode allows a trigger signal
to dictate when the spectrum analyzer can
sweep. This mode is useful for characterizing
signals that are pulsed on and off, such as RF
burst transmissions or for measuring spurious
noise levels between transmission bursts.

Overview

1. The trigger signal must be synchronized to the
period of the input signal (shown as RF burst
below).

2. The start of the gate time is produced from the
positive or negative edge of the trigger signal +
the delay time.

BASIC OPERATION

Gated Sweep Overview

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GSP-9330 User Manual

3. The end of the gate time is determined by the
set gate length.

4. The gated sweep should not be positioned at
either end of the transmission.

Delay Length

Gate

Trigger

RF Burst

period

Example: The diagram above demonstrates the
relationship between the input trigger, the input
signal and the position of the gated sweep relative
to the input signal.

Note

Please take into consideration RBW settling time.
Setting the delay time too short may not leave
enough time for the RBW filter to resolve.

76

Using the Gated Sweep Mode

Connection

1. Connect a trigger signal (3.3v CMOS) to the
GATE IN port on the rear panel.

Trigger

Note

RBW must be equal to or greater than 10kHz for
the gated sweep mode function to be available.

Operation

1. Press

Sweep

> GateDelay[F5] and set the gate

delay time.

2. Press

Sweep

> Gated Length[F6] and set the gate

time length.

3. Press

Sweep

> Gated Sweep[F4] and turn the

mode on.

Gate Delay:
Gate Length:

0s ~ 1000s
58us ~ 1000s

Display Icon

The Sweep Gated icon is displayed when
Gated Sweep is turned on.

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77

Example:

The example below shows the spectrum of an FSK
modulated signal when gated sweep mode is off.

The example below shows the same signal with the
gated sweep timed to sweep when only the desired
frequency is output.

Gated sweep icon

Note

Gate Delay and Gate Length must first be set
before Gated Sweep is turned on.

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78

BASIC OPERATION

Description

The Sweep Control function and the Sweep
Mode key

Sweep

Mode

toggles the Sweep Mode from

Normal to Fast.

The Fast setting speeds up the signal processing
and the display update rate to increase the
overall sweep time. This mode is especially
useful when the span is greater than 1MHz.

When set to Normal, signal processing and
update rate is set to normal levels.

Operation

1. Press

Sweep

> Sweep Control [F7] to toggle the

Sweep Mode between Norm. and Fast.

OR

2. Press

Sweep

Mode

and toggle the Sweep Mode

between Norm. and Fast.

Display Icon

The Sweep icon is displayed on the right­hand side of the screen when the sweep is
in either Fast or Normal mode.

Sweep Times

Center Frequency = 1.625GHz

Sweep Mode

Span(Hz)

RBW (Hz) AUTO

Norm.

Fast

3.25G

1M

169ms

84.8ms

2G

1M

104ms

52.2ms

1G

1M

52ms

31.1ms

500M

1M

31ms

16.8ms

200M

1M

13.4ms

6.72ms

100M

1M

6.7ms

3.36ms

50M

300k

10.7ms

716us

20M

100k

23.4ms

573us

10M

100k

11.7ms

286us

Sweep Control / Sweep Mode

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GSP-9330 User Manual

5M

30k

28.9ms

655us

2M

10k

101ms

1.96ms

1M

10k

50.9ms

1.31ms

500k

3k

6.88ms

6.88ms

200k

1k

22.9ms

22.9ms

100k

1k

9.83ms

9.83ms

50k

300

76.4ms

76.4ms

20k

100

219ms

219ms

10k

100

109ms

109ms

5k

30

710ms

710ms

2k

10

1.98s

1.98s

1k

10

994ms

994ms

500 3 2.65s

2.65s

200 1 2.65s

2.65s

100 1 2.65s

2.65s

80

BASIC OPERATION

Description

Each trace (1, 2, 3, 4) is represented by a
different color. When activated, an icon for each
trace color and function is shown to the left of
the display. When a trace is selected,
parameters can be set/edited from the trace
menu.

Trace Color:

1: Yellow
2: Pink
3: Blue
4: Orange

Trace Type

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 and
Write

The GSP-9330 continuously
updates the display with each
sweep.

Trace

The GSP-9330 is able to set the parameters of up to 4 different
traces on the display at once. Each trace is represented by a
different color and is updated with each sweep.

Selecting a Trace

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GSP-9330 User Manual

Hold Max/
Hold Min

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. The Hold Max
setting also has a threshold
setting. This setting will ensure
only those values above the
threshold are kept.

View

View will hold the selected
trace and stop updating the
trace data for the selected trace.
Pressing View[F5] will display
the trace data that was cleared
using the Blank[F6] key.

Blank

Clears the selected trace from
the display and stores trace
data. The trace can be restored
by pressing View[F5].

Display Icon
Example

View

Hold Max

View

Blank

Trace 1

Trace 2

Trace 3

Trace 4

Operation

1. Press

Trace

> Trace[F1] and choose the trace

number.

Trace:

1, 2, 3, 4

82

2. Select the trace type:

Clear & Write[F2]
Max Hold[F3]
Min Hold[F4]
View[F5]
Blank[F6]

3. If Max Hold[F3] was selected, set the threshold
level.

Note

Traces, 2, 3 and 4 are set to

Blank

by default.

Trace Math

Description

Performs trace math from two traces (TR1, TR2)
and stores the result in the currently selected
trace. It also performs trace shift.

Math functions

Power Diff

Subtracts the TR1 amplitude
data from the TR2 amplitude
data. The TR1 data TR2 data
are converted to watts. The
result is converted back to
dBm.

Log Diff

Subtracts the TR1 amplitude
data from the TR2 amplitude
data and then adds a
logarithmic reference. Both the
TR1 and TR2 data is in dBm.
The resultant trace of the
subtraction is in dB. When the
result is added to a logarithmic
reference the resulting data is
in dBm.

BASIC OPERATION

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GSP-9330 User Manual

LOG Offset

Adds a reference to the TR1
trace

Operation

1. Press

Trace

> More[F1]>Trace Math[F1].

2. Press TR1[F1] and select the first trace source:

TR1:

Trace 1,2, 3, 4*

3. Press TR2[F2] and select the second trace
source:

TR2:

Trace 1, 2, 3, 4*

Note

*You cannot select the current trace as the TR1 or
TR2 trace sources. The current trace is designated

by pressing

Trace

>

Select Trace>[F1].

4. Select the trace math function:

PowerDiff[F3]
LogDiff[F4]
LogOffset[F5]

5. If LogDiff was selected, set the reference level
and unit.

LogDiff ref range:
LogDiff ref units:

-120dBm ~ 30dBm

dBm, W

6. If LogOffset was selected, set the offset level
and unit.

LogOffset range:

-50dB~+50dB

7. To turn trace math off, press the OFF[F6].

84

BASIC OPERATION

Display Icon

The Math icon is displayed when trace
math is turned on.

Description

Each time the spectrum analyzer samples data
for each point on the trace, a number of samples
are usually taken for each point, known as a
sample bucket. The actual value of each point is
determined by the detector from the samples in
each bucket.

Each selected trace, (1, 2, 3, 4), can use a
different detection mode.

Detection modes

Auto

Automatically chooses an
appropriate mode based on the
values of all the samples.

Normal

While the signal level is
constantly increasing or
decreasing, the positive peaks
are detected. Otherwise, the
detection mode switches
between positive peak and
negative peaks. Useful for
picking up burst phenomenon
while avoiding excessive noise.

Peak+

Detects positive peak signals
by selecting the maximum peak
value for each point from each
bucket. This mode is useful for
sinusoidal signals.

Trace Detection Mode

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GSP-9330 User Manual

Peak-

Detects negative peak signals
by selecting the lowest peak
value for each point from each
bucket. This mode is not
recommended for amplitude
measurement.

Sample

Randomly selects a value from
the bucket sample. Useful for
noise signals.

RMS
Average

Calculates the RMS average
power of all the samples in the
sample bucket.

EMI>
Quasi-peak

The quasi-peak detector is a
peak detector that is weighted
by the duration and repetition
rate of the signal, as specified
by the CISPR 16-1-1 standard.
Quasi-peak detection is
characterized by a fast charge
time and slow decay time.

EMI>
Average

Calculates the average power
of all the samples in the sample
bucket.

86

BASIC OPERATION

Auto Detector
Selection Method

Below is a flow chart diagram showing the
Detector selection for the Auto mode.

Is (trace) Average

on?

Are any traces set

to Max Hold?

Are any traces set

to Min Hold?

Is Average Type

set to Power?

AverageSample

Peak+

Peak-

Normal

Y

N

Y

N

Y

N

N

Y

Is Phase Jitter

measurement on?

Sample

Y

N

Are any windows

set to Topographic?

Peak+

Y

N

Detector

(Auto mode)

Operation

1. Press

Trace

> More[F7]>Detection[F2].

2. Select the trace detection mode for the selected

trace:

Auto[F1]
Normal[F2]
Peak+[F3]
Peak-[F4]
Sample[F5]
RMS Average[F6]
EMI[F7]>Quasi peak[F1]
EMI[F7]>Average[F2]

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GSP-9330 User Manual

3. The display will return to the Trace menu.

Display Icon

Normal

Peak+ icon

Peak- icon

Sample icon

RMS Average
icon

Quasi-peak
icon

Average icon

88

BASIC OPERATION

Description

In free run mode all signals are captured and
the trigger conditions are not used.

Free Run Mode

1. Press

Trigger

> Free Run[F1] to run in free mode.

Description

Sets the video trigger level for video signals.
When the video signal voltage level exceeds*
the video trigger level, a trigger signal will be
generated.
*for positive video edge

Trigger

The Trigger function sets the signal conditions upon which the
spectrum analyzer triggers captured waveforms, including
frequency, amplitude, and delay. An external trigger signal, instead
of the default internal signal, may be used as required for special
conditions.

The sections below can be used to skip to the relevant section:

Free Run Mode → from page 89

Activate Video Trigger → from page 89

Activate External Trigger → from page 91

Selecting Trigger Mode → from page 92

Set the Trigger Delay Time → page 93

Selecting a Trigger Type

Free Run Mode

Activate Video Trigger

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GSP-9330 User Manual

Parameters

Video Edge:

Determines the polarity of the
video trigger.

Positive: The signal voltage
exceeds the video level at the
trigger frequency.

Negative: The signal voltage is
lower than the video level at
the trigger frequency.

Video Level:

The trigger voltage level.

Trigger
Frequency:

Sets the frequency to start
triggering

Operation

1. Press

Trigger

>Trigger Condition[F2]>Video[F1]

2. Press Video Edge[F1] and choose the edge.

Range:

Positive, Negative

3. Press Video Level[F2] and set the video voltage

trigger level.

Trigger level:

(-120dBm to +30dBm)
+Ref Level Offset

4. Press Trigger Freq[F3] and choose the frequency

at which the spectrum analyzer will check the
triggering conditions.

Frequency:

0-3.25GHz+frequency
offset

Display Icon

The Video Level trigger icon is displayed
when the Video trigger is activated.

90

Note

Set the trigger back to Free Run to disable the
video trigger.

Activate External Trigger

Description

The external trigger is used when an external
trigger signal is input into the rear panel TRIG
IN port. The external trigger signal can be
configured as positive or negative edge.

Trigger: 3.3V, CMOS

Operation

1. Press

Trigger

>Trigger Condition[F2]>Ext.Edge[F2]

and select the trigger edge:

Pos:
Neg:

Positive edge
Negative edge

2. Connect the external trigger signal to the rear
panel TRIG IN port.

Trigger

3. Press Action Now[F5] to activate the external
trigger.

4. The system will now wait for the trigger
conditions to be matched before starting a
sweep.

Display Icon

The EXT Trigger icon is displayed when the
external trigger is activated.

BASIC OPERATION

91

Note

The trigger will revert back to the Free Run mode if
any parameter settings are changed, such as the
span or amplitude settings.

Selecting the Trigger Mode

Description

In free run mode all signals are captured and
the trigger conditions are not used.

Modes

Normal:

The spectrum analyzer captures
every signal that meets the trigger
conditions.

Single:

The spectrum analyzer captures
the first signal that meets the
trigger conditions.

Continuous:

The spectrum analyzer captures
the first signal that meets the
trigger conditions then switches to
free run mode thereafter.

Operation

1. Press

Trigger

> Trigger Mode[F3] to toggle the

trigger mode:

Nor.:
Sgl.:
Cont.:

Normal
Single
Continuous

2. Press Action Now[F5] to manually start
triggering.

Display Icons

Normal:

Single:

Continuous:

GSP-9330 User Manual

92

BASIC OPERATION

Description

Sets the delay time between when the analyzer
triggers and when the analyzer begins to
capture the signal.

Delay time range: 1ns to 1ks

Operation

1. Press

Trigger

>Trigger Delay[F4] and set the

trigger delay time.

Delay range:

0~1000s

Set the Trigger Delay Time

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GSP-9330 User Manual

Marker

A Marker shows the frequency and amplitude of a waveform point.
The GSP-9330 can activate up to 6 markers or marker pairs
simultaneously as well as up to 10 peak markers in the marker table.

The marker table helps editing and viewing multiple markers in a
single display.

A delta marker shows the frequency and amplitude difference from
a reference marker.

The GSP-9330 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 95

Move Marker Manually → from page 96

Move Marker to Preset Locations → from page 96

Activate Delta Marker → from page 97

Move Delta Marker(s)Manually → from page 98

Marker Functions → from page 99

Move Marker to Trace → from page 101

Show Markers in Table → from page 102

Peak Search → from page 103

Peak Configuration → from page 105

Peak Table → from page 106

94

BASIC OPERATION

Operation

1. Press

Marker

> Select Marker[F1] and select a

marker number.

Marker:

1~6

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

3. Press Normal[F3] to set the selected marker to

the Normal type.

4. The display will show the marker on the trace

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

Marker

Maker ID, Frequency, Amplitude

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

95

Move Marker Manually

Operation

1. Press

Marker

> Select Marker[F1] and select a

marker number.

2. Use the left/right arrow keys to
move the marker one grid division.

3. Use the scroll wheel to move the
marker in fine increments.

4. Alternatively, the numeric keypad
in combination with the F1~ F7
keys can be used to directly enter
the frequency of the marker
position.

7 8 9

654

1 2 3

/0

Description

The

Marker

key is used to move the selected

marker to a number of preset positions.

Functions

Mkr>Center:
Mkr>Start:
Mkr>Stop:
Mkr>CF Step:
Mkr>Ref Lvl:

Move to center frequency.
Move to start frequency.
Move to stop frequency.
Move to step frequency.
Move to reference level
amplitude.

Note

When the

Marker

key is used, the span and other

settings may be automatically changed.

Move Marker to Preset Locations

GSP-9330 User Manual

96

BASIC OPERATION

Operation

1. Press

Marker

> Select Marker[F1] and select a

marker number.

2. Press

Marker

and select a marker position:

Mkr>Center[F1]
Mkr>Start [F2]
Mkr>Stop[F3]
Mkr>CF Step[F4]
Mkr>Ref Lvl[F5]

Description

Delta markers are marker pairs that measure
the difference in frequency/time 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 Δ1.

Operation

1. Press

Marker

> Select Marker[F1] and select a

marker number.

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

3. Press Delta[F4]>Delta[F1] to set the selected

marker to the Delta type.

Activate Delta Marker

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GSP-9330 User Manual

Move Delta or
Reference Marker

1. Press

Marker

> Delta[F4]> MoveRef[F2] to move

the reference marker.

2. Press

Marker

> Delta[F4]> MoveDelta[F3] to move

the Delta marker.

3. Move the selected marker in the same fashion

as a normal marker, see page 96

Move Both
reference and
delta marker

1. Press either Move Pair Span[F4] or Move Pair

Center[F5] to move both markers at the same

time.

Move Pair Span:

Sets the frequency span
between both markers.
The span can be positive
or negative:

1

+spanΔ1

Δ1

-span1

Move Pair Center:

Moves both markers at
the same time, keeping
the span between both
markers even
throughout.

2. Move both markers in the same fashion as a

normal marker, see page 96.

Move Delta Marker(s)Manually

98