LP Technologies LPT-3000 User manual

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9 kHz -3.0 GHz
Digitally Synthesized RF Spectrum
Analyzer
LPT-3000
99 Washington Street
Melrose, MA 02176
Phone [phone]
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com

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Chapter 1. Product Specifications................................................. 5
1-1. Product Specifications................................................................................................. 6
Chapter 2. Preparation for Use ..................................................... 9
2-1. Initial Inspection........................................................................................................ 10
2-2. Power Requirements................................................................................................. 10
2-3. Fuse Check................................................................................................................. 11
2-4. Power Cable .............................................................................................................. 11
2-5. Environmental Conditions ......................................................................................... 11
2-6. Turning ON the LPT-6000 .......................................................................................... 12
Chapter 3. Starting...................................................................... 13
3-1.Front Panel Overview................................................................................................. 14
3-2. Rear Panel Overview ................................................................................................. 17
3-3. Display Overview....................................................................................................... 18
3-4. Menu and soft key Overview .................................................................................... 20
3-5. Measurement Methods ............................................................................................ 21
3-6. Summary of Measurements...................................................................................... 22
Chapter 4. Configuration of a Menu ........................................... 24
4-1. Frequency.................................................................................................................. 25
4-2. Span........................................................................................................................... 25
4-3. Amplitude.................................................................................................................. 26
4-4. Marker....................................................................................................................... 26

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4-5. Peak Search ................................................................................................................27
4-6. Marker → ...................................................................................................................27
4-7. I/O Mode....................................................................................................................28
4-8. Trace...........................................................................................................................28
4-9. BW/Avg ......................................................................................................................29
4-10. Trig ...........................................................................................................................29
4-11. Display......................................................................................................................30
4-12. Sweep.......................................................................................................................31
4-13. Measure ...................................................................................................................31
4-14. Measure Control ......................................................................................................32
4-15. Measure Setup.........................................................................................................32
4-16. System......................................................................................................................33
4-17. File............................................................................................................................34
4-18. File ( Save ) ...............................................................................................................35
4-19. File ( Load )...............................................................................................................36
4-20. File ( Delete ) ............................................................................................................36
4-21. File ( Copy ) ..............................................................................................................37
4-22. File ( Rename ) .........................................................................................................37
4-23. File ( Create Dir ) ......................................................................................................38
4-24. Print Setup ...............................................................................................................38
Chapter 5. Explanation of a Front Board Key .............................. 39
5-1. AMPLITUDE ................................................................................................................40
5-2. BW/Avg ......................................................................................................................41

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5-3. Display ....................................................................................................................... 43
5-4. File............................................................................................................................. 44
5-5. FREQUENCY............................................................................................................... 46
5-6. I/O Mode ................................................................................................................... 47
5-7. Marker....................................................................................................................... 49
5-8. Marker → .................................................................................................................. 51
5-9. Meas Control............................................................................................................. 53
5-10. Meas Setup.............................................................................................................. 54
5-11. MEASURE ................................................................................................................ 56
5-12. Preset ...................................................................................................................... 57
5-13. Print......................................................................................................................... 58
5-14. Print Setup............................................................................................................... 58
5-15. Return...................................................................................................................... 59
5-16. Peak Search ............................................................................................................. 59
5-17. Single Sweep ........................................................................................................... 60
5-18. SPAN ........................................................................................................................ 60
5-19. Sweep...................................................................................................................... 61
5-20. System ..................................................................................................................... 61
5-21. Trig........................................................................................................................... 64
5-22. Trace ........................................................................................................................ 65
Chapter 6. Options...................................................................... 67
6-1. Specifications ............................................................................................................ 68

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Product specifications
In this chapter we will review the LPT-3000 Spectrum
Analyzer’s specifications

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Chapter 1. Product Specifications
1-1. Product Specifications
Frequency
►Range : 9 kHz to 3.0 GHz
►Resolution : minimum 1 Hz
►Span Range : 100 Hz / div to 300 MHz / div
Selection of 1,2,5 steps (automatic), ZERO Span, FULL Span (9 kHz to
3.0 GHz)
►Frequency Selection : Start, Stop, Center, Span set-up
►Span Accuracy : ±3 % of the Indicated Span Width
►Readout Accuracy : ≤±(Indicated frequency × Reference frequency accuracy +
Span
× Span accuracy + 50% of RBW)
►Phase Noise : ≤−90 dBc/Hz @10 kHz offset
Amplitude
►Range : +20 dBm ~ −105 dBm
►Avg. Noise Level (1 kHz RBW, 10 Hz VBW)
≤−105 dBm : 150 kHz ~ 1 GHz
≤−100 dBm : 1 GHz ~ 2.4 GHz, 50 kHz ~ 150 kHz
≤−95 dBm : 2.4 GHz ~ 3 GHz
►Amplitude Unit : dBm, dBmV, dBuV, V, mV, uV, W, mW, uW
►Display Scale Linearity
≤±1.5 dB / 70 dB (10 dB / div), ≤±1.5 dB / 40 dB (5 dB / div)
≤±0.5 dB / 8 dB (1 dB / div), ≤±0.5 dB / 16 dB (2 dB / div)
►Frequency Response (0 dB attenuation) : −3.5 dB ~ 1.5 dB (100 kHz ~ 10 MHz)
±1.5 dB (10 MHz ~ 3 GHz)
►Reference Level
Range : −90 dBm to +20 dBm
Resolution : 0.1 dB step
Accuracy : ±1.5 dB

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►Second Harmonic Distortion : ≤−60 dBc, −40 dBm input
►Intermodulation Distortion : ≤−70 dBc, −40 dBm input
►Residual Spurious : ≤−85 dBm (Input terminated, 0 dB attenuation)
►Other Input Spurious : ≤−60 dBc, −30 dBm input
►Resolution Bandwidth
Selections : 1 kHz, 3 kHz, 10 kHz, 30 kHz, 100 kHz, 300 kHz, 1 MHz, 3 MHz, 9 kHz, 120 kHz
Accuracy : ±20 %
Selectivity : 60 dB / 3 dB ratio < 15 : 1
60 dB / 6 dB ratio < 12 : 1 (9 kHz, 120 kHz)
Switching Error : ≤±1.0 dB (1 kHz Reference RBW)
Video Bandwidth : 10 Hz to 3 MHz in 1-3-10 step
Sweep
►Time : 100 ms to 1000 sec, 40 ms to 1000 sec (zero span)
►Accuracy : ≤±20 %
►Trigger Source : External (rear), Video, Free run, Line
►Trigger Mode : continuous, single
►Trigger Level : TTL level
Storage
►Trace Storage : maximum 900 waveforms
►Setup Storage : maximum 3,000 states
Screen Display
►Type : 6.4″color TFT LCD screen
►Display Resolution : 640 (H)× 480 (V)active display area
►Marker Mode : Peak search, Delta marker, Marker to Center,
Marker to Reference (8 markers maximum)
Input
►RF Input Connector : N-type Female, 50 Ω nominal
►VSWR : 150 kHz to 3.0 GHz, VSWR < 1.5 : 1 (with 0 dBm Ref Level)
►Maximum Input Level : 0 Vdc, +20 dBm

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Standard Frequency (10 MHz, Ref.)
►Temperature Stability : ±0.5 ppm
►Aging : ±0.5 ppm / Year
►Connector : BNC female
►Input Level : −5 dBm to +15 dBm
►Output Level : 10 MHz, +8 dBm nominal
Interface
►RS-232C
►Printer
Driver : PCL3 or PCL5, HP, EPSON, Laser-Jet, Desk-Jet etc. supports most printers
Connector : Standard 25 pin female D-Sub parallel printer, supports USB
►USB 2.0 Host
Printer Driver : Supports most printers including HP, EPSON, Laser-Jet, Desk-Jet, etc.
USB Storage Device : supports 1.1, 2.0, for storing image files, supports GIF format
►Ethernet (Option)
10-Base-T Ethernet : supports Internet remote control
►GPIB Interface (Option) : IEEE 488 bus
General Specifications
►Size : 350 (width) ×195 (height) × 375 (length) mm
►Weight : 10 kg
►Warm-up Time : More than 20 minutes for precise measurement
►Power
Supply Electrical Power : 100-240 VAC at 50 / 60Hz
Consumption Power : 80 watts maximum (without additional built in options)
►Operating Temperature : 0 ℃to 40 ℃
►Temperature for Storage : −20 ℃to 70 ℃
►RF Emissions, Immunity
RF emissions : EN 550011

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Preparation for Use
In this chapter we will review the following:
Initial inspection
Power requirements
Fuse check
Power cable
Environmental conditions
Turning ON the LPT-3000

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Chapter 2. Preparation for Use
2-1. Initial Inspection
Please inspect the box contents and make sure all items listed are included. Keep the
shipping box and all packing materials until the inspection of the LPT 3000 Spectrum
Analyzer is complete.
Table 2-1 (below) shows all accessories offered with the LPT-3000 Spectrum Analyzer.
Please contact LP Technologies Customer Support for any damaged parts, missing items,
or any other issue that you may need assistance with.
To clean the surface of the unit, please use a wet/dry cloth. Do not clean the inside of
the case.
Accessories
Note:
Operation Manual CD
Included in the package
Power Cable (AC Power Cable 3 Holes)
Included in the package
[Table 2-1] Accessories offered with the LPT 3000 Spectrum Analyzer
2-2. Requirements for Power
The LPT 3000 does not need any additional external devices; use only the power cord provided.
Formore information, see Table 2-2 below.
[Table 2-2] Requirements for AC Power
Input Voltage
100 - 120 VAC ( 50 - 60 Hz )
Input Voltage
220 - 240 VAC ( 50 - 60 Hz )
Power Consumption
When Using
Less than 80W
In order to prevent electrical shock, please unplug the power cord from the main
power supply on the back of the spectrum analyzer before cleaning.
WARNING !

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2-3. Fuse Check
A spare fuse should be included with the LPT 3000. The holder is located in the upper
part of the power switch on the back of the device. The spare is contained behind the
fuse currently in use. If there is no longer a spare fuse in this location, a replacement
should be acquired that matches the following properties. (250 VAC, 3.15 A type T 5 ×
20 mm).
2-4. Power Cable
In accordance with International Safety Standards, the LPT 3000’s power cable uses 3
lines including ”Ground.” When connected to a power outlet, the cable grounds the
cabinet of the unit.
2-5. Environmental Conditions
The LPT-3000 Spectrum Analyzer will operate normally between the temperatures of 0 ℃
and 40 ℃. However, for best performance, it is important to avoid exposing the unit to
conditions involving severe vibration, high moisture, direct sun rays, or areas where the
source voltage changes constantly.
WARNING !
WARNING !
To reduce the risk of fire, please use only the recommended fuses.
Using a fuse with a different power rating may cause serious damage to
the spectrum analyzer.
Please use a grounded power cable with three lines, or connect the
spectrum analyzer to a protective “Ground” line. Operating the unit
without following these requirements may put you at risk of an electric
shock. It is also important to check the source voltage, because if it
exceeds the recommended value, the spectrum analyzer may be
permanently damaged or catch fire.

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2-6. Turning on Power
Please connect the power cord to the back panel of the LPT-3000 Spectrum Analyzer
before use, and then press the “On” button on the front panel. Allow the unit to warm up
for approximately 20 minutes before operating.
If you intend to use an external signal of 10 MHz as a standard frequency, please use the 10 MHz REF
IN input connector on the rear panel.
The signal level should be over -5 dBm.
WARNING !
WARNING !
To prevent short-circuits due to condensation make sure the spectrum
analyzer is fully dry before using it in normal conditions, after storing, or
when using it in low temperature environments for long periods of time.
In order to prevent the inner temperature of the unit from rising, there is
a cooling fan on the rear panel. Please leave at least 10 cm between the
back panel and walls or other nearby devices in order to allow proper air
circulation.

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Getting started
In this chapter we will review the following:
Front panel overview
Rear panel overview
Display overview
Menu and soft key overview
Measurement methods
Summary of measurements

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Chapter 3. Starting
3-1. Front Panel Overview
LPT-3000
[Figure 3-1] Front panel
1. 6.4 ″ TFT-LCD.
Displays the wave type, parameter set-up, indicated value, and menu key label.
2. Unlabeled soft keys next to the screen.
Allows the user to perform several different functions using the menu displayed on the
LCD screen.
3. FREQUENCY, SPAN, and AMPLITUDE keys.
Activates the primary spectrum analyzer functions and access menus of related
functions.
The FREQUENCY key allows the user to enter or change the frequency parameter data.
The SPAN key allows the user to enter or change the span parameter data.
The AMPLITUDE key allows the user to enter or change the amplitude parameter data.
4. MARKER function.
Controls markers, reads frequency and amplitude of a trace, and automatically detects
the signal with the highest amplitude.

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The MARKER key activates the marker function.
The PEAK SEARCH key activates the peak search functions.
MARKER → Sets the marker value as a specific parameter.
5. CONTROL functions.
Allows access to menus that control the spectrum analyzer display and other
functions necessary for measurement.
The I/O DETECT key is for setting the input and output of a Ref. 10 MHz signal, and
Detect Mode.
The TRACE key is related to the set-up of trace on an LCD screen.
The AUTOSET key searches for the highest amplitude signal and automatically sets
the parameters.
The BW/AVG key is for setting functions including RBW, VBW, and AVG.
The DISPLAY key is for setting the functions of the screen.
The TRIG key is for setting the trigger function.
The SINGLE key is for performing a single sweep.
The SWEEP key is for setting a sweep time and sweep mode.
6. MEASURE functions.
Allows the user to set up, control, and reset the spectrum analyzer’s measurement
functions and use the built-in compliance masks.
The MEASURE key allows access to measurement tools and compliance masks.
The MEAS CONTROL key is for controlling measurement functions.
The MEAS SETUP key is for setting measurement functions.
The RESTART key is for resetting measurements.
7. The function within the SYSTEM key affects the entire state of the analyzer.
Diverse set-ups and arrangements can be made by using the SYSTEM key.
The PRESET (reset) key will reset the analyzer to its factory default state.
The FILE key menu makes it possible to save the current trace state in the
memory of the analyzer or the USB flash memory, or allow loading from them.
The SAVE key immediately performs the currently selected save function.
The PRINT SETUP menu key allows you to select printing options.
The PRINT key immediately sends selected/current data to a connected printer.

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8. The power button turns ON/OFF the LPT-3000 Spectrum Analyzer. The Green
light indicates the unit is ON and the Red light indicates it is in a STANDBY mode.
The main power switch on the back of the unit must be ON to operate the unit.
When the unit is ON, press and hold the POWER button for 3 seconds to turn it
OFF.
9. USB interface for USB Flash memory stick or USB printer cable.
10. Tracking Generator or CDMA Signal Generator input connector (Optional).
11. RF signal input connection.
Data controlling keys including a step key, a knob, and a number key pad allow the
user to change the numeric value of an active function. Turning the knob clockwise
increases values while counter-clockwise decreases values. All controlling keys can
be used concurrently. For example, the values for the central frequency may be
adjusted by using the knob, by punching new values using the key pad, or by using
the step keys to increase or decrease the values.
The knob makes it possible to successfully change values for functions such as
central frequency, reference level, and a marker location. The scope of the
adjustment will be determined by the scale of the scope of measurement. The
number key pad is used to input precise values.

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3-2. Rear Panel Overview
LP Technologies, Inc
[Figure 3-2] Outline of the Functionsof the Rear Panel
1. Ventilation fan is installed to discharge heat generated inside the analyzer.
2. External trigger input connector
3. Ethernet connection interface
4. RS－232C connection interface
5. AC main power switch (including fuse/spare fuse)
6. Input/Output connector for standard frequency. This port is activated by
pressing the I/O DETECT button in the CONTROL section on the front panel of
the unit.
7. Ground connection
8. GPIB connector

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9. Printer connection
10. AC power switch (including a fuse)
3-3. Display Overview
This is a screen shot of the LPT-3000 display. A description of each item listed is
provided below.
18
17
19
16
22
21
20
[ Figure 3 - 3 ] Screenshot
[Table 3-1] Explanation of a Screen
Item
Explanation
Function Key
1
Detect mode
I/O DETECT >> Detect
2
Reference level
AMPLITUDE >> Ref Level
3
Activating function block
Subject to change according to the key selection

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Item
Explanation
Function Key
4
Screen title
DISPLAY >> Title >> Change Title
5
Time and date
SYSTEM >> Time/Data
6
Attenuation
AMPLITUDE >> Attenuation
7
Marker frequency
Marker
8
Marker amplitude
Marker
9
Menu title
Subject to change according to the key
selection
10
Menu
Subject to change according to the key
selection
11
Frequency span or
Stop frequency
SPAN or
FREQUENCY >> Stop Freq
12
Sweep time
SWEEP >> Sweep Time
13
Video bandwidth
BW/AVG >> Video BW
14
Frequency offset
FREQUENCY >> Freq Offset
15
Resolution bandwidth
BW/AVG >> Res BW
16
Center frequency or
starting frequency
FREQUENCY >> Center Freq or
FREQUENCY >> Start Freq
17
Trigger / Sweep
TRIG, SWEEP
18
Trace mode
TRACE
19
Video avg.
BW/AVG >> Average
20
Display line
DISPLAY >> Display Line
21
Amplitude offset
AMPLITUDE >> Ref Level Offset
22
Amplitude scale
AMPLITUDE >> Scale/Div
[Table 3-2] Explanation of a Screen on Trace Mode
Screen Code
Explanation
W
Clear Write
M
Max Hold
V
View
S
Blank
m
Min Hold

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[Table 3-3] Explanation of a Screen on Trigger Mode
Screen Code
Explanation
F
Free Run
L
Line trigger
V
Video trigger
E
External trigger
[Table 3-4] Explanation of a Screen on Sweep Mode
Screen Code
Explanation
C
Continuous sweep
S
Single sweep
3-4. Menu and Soft key Overview
There are several keys labeled (FREQUENCY, SYSTEM and MARKER…etc) on the front panel of the
LPT-3000 Spectrum Analyzer designed to execute specific different functions. Pressing a front
panel key accesses a soft key menu that is located along the right side of LCD display.
Soft key menus allow access to a list of related functions to the ones obtained by pressing directly
on the front panel keys. Pressing the unlabeled keys,also called soft keys, immediately on the right
of the screen will activate the function appearing on the screen next to each key.
The function becomes active when the value of the concerned soft key menu can be
changed. Activated functions appear on the LCD screen in the active function block. For
example, pressing the FREQUENCY key will display a soft key menu of related functions on
the right of the LCD screen. Pressing the soft key corresponding to Start Freq will result in
the “Start Freq” being displayed in the active block.
Soft keys with ON and OFF allow the user to turn a function ON or OFF
Soft keys with AUTO and MAN allow the user to auto-couple or manually change values using the