Anritsu MS2090A-0732, MS2090A-0754, MS2090A-0726, MS2090A-0720, MS2090A-0709, MS2090A-0714, MS2090A-0743 User Manual
User Guide
Field Master Pro™ MS2090A
Spectrum Analyzer
MS2090A-0709 9 kHz to 9 GHz (Option 709)
MS2090A-0714 9 kHz to 14 GHz (Option 714)
MS2090A-0720 9 kHz to 20 GHz (Option 720)
MS2090A-0726 9 kHz to 26.5 GHz (Option 726)
MS2090A-0732 9 kHz to 32 GHz (Option 732)
MS2090A-0743 9 kHz to 43.5 GHz (Option 743)
MS2090A-0754 9 kHz to 54 GHz (Option 754)
Anritsu Company
490 Jarvis Drive
Morgan Hill, CA 95037-2809
USA
Part Number: 10580-00444
Published: January 2020
Copyright 2020 Anritsu Company
Revision: D
Unauthorized Use or Disclosure
Anritsu Company has prepared the product user documentation for use by Anritsu Company personnel and
customers as a guide for the proper installation, operation, and maintenance of Anritsu Company equipment and
software programs. The drawings, specifications, and information contained therein are the property of Anritsu
Company, and any unauthorized use of these drawings, specifications, and information is prohibited; they shall not be
reproduced, copied, or used in whole or in part as the basis for manufacture or sale of the equipment or software
programs without the prior written consent of Anritsu Company.
Export Management
The Anritsu products identified herein and their respective manuals may require an Export License or approval by
the government of the product country of origin for re-export from your country. Before you export these products or
any of their manuals, please contact Anritsu Company to confirm whether or not these items are export-controlled.
When disposing of export-controlled items, the products and manuals must be broken or shredded to such a degree
that they cannot be unlawfully used for military purposes.
The MS2090A Field Master Pro User Guide is part of a set of manuals that cover all of the instrument
functions and their use. This manual covers the instrument overview, system functions, and other common
features, along with a brief guide to basic measurement concepts and setups. Most instrument operations are
covered in specific chapters of this manual as listed below. Remote programming is covered in the
programming manual.
Before You Begin
• Read the Field Master Pro MS2090A Information, Compliance, and Safety Guide (PN: 10100-00069) for
important safety, legal, and regulatory notices before operating the equipment.
• Charge the instrument battery using the supplied battery charger until fully charged.
NoteThe instrument may reboot when the battery charge level is low and external power is removed.
• Review Section 1-2 “Instrument Description” on page 1-2 and Section 1-4 “Instrument Care and
Preventive Maintenance” on page 1-4.
• Chapter 2, “Instrument Overview” provides information about the physical instrument, connectors, and
other hardware interfaces.
• Chapter 3, “Spectrum Analyzer Measurements” provides information on the software user interface,
such as instrument settings, measurement features, and menu overviews, for the spectrum analyzer.
• Chapter 4, “Real-Time Spectrum Analyzer Measurements” provides information on the software user
interface, such as instrument settings, measurement features, and menu overviews, for the real-time
spectrum analyzer.
• Chapter 5, “LTE Signal Analyzer” provides information on the software user interface, such as
instrument settings, measurement features, and menu overviews, for the LTE analyzer.
• Chapter 6, “5G Measurements” provides information on the software user interface, such as instrument
settings, measurement features, and menu overviews, for the 5G analyzer.
Additional Documentation
Table 1-1.Related Manuals
Document Part NumberDescription
10100-00069Important Product Information, Compliance, and Safety Notices
11410-01000MS2090A Field Master Pro Technical Data Sheet
10580-00445Programming Manual
For additional information and literature covering your product, visit the product page of your instrument and
select the Library tab:
The MS2090A Field Master Pro is a synthesizer-based handheld signal analyzer that provides quick and
accurate measurement results. The instrument is designed for monitoring, measuring, and analyzing signal
environments. Measurements can easily be made by using the main instrument functions: frequency, span,
amplitude, and bandwidth. A 10.1" capacitive touchscreen enables fast, easy data entry.
Typical measurements include in-band interference and transmit spectrum analysis, plus cell site and
802.11a/b/g interference testing. Options are available for RF, advanced demodulation, and over-the-air (OTA)
measurement. A full range of marker capabilities (such as peak, center, and delta functions) are provided for
faster, more comprehensive analysis of displayed signals. Upper and lower multi-segmented limit lines are
available to create quick, simple pass/fail measurements.
Time and date stamping of measurement data is automatic. The internal memory provides for the storage and
recall of up to 1000 measurement setups and up to 1000 traces. Measurements and setups can be stored
internally on the instrument or on a USB flash drive for later recall.
Note
Not all after-market USB drives are compatible with Field Master Pro. The USB drive must contain a
single partition using FAT32 format.
1-3Document Conventions
The following conventions are used throughout the MS2090A documentation set.
Instrument Identification
When identifying a frequency option for the MS2090A, that option number is appended after the model
number; example: MS2090A-0709.
User Interface
The MS2090A user interface consists of menus, buttons, toolbars, and dialog boxes.
User Interface Navigation
Elements in navigation paths are separated as follows: MARKER > PEAK SEARCH > NEXT PEAK.
1-2PN: 10580-00444 Rev. DMS2090A UG
General Information1-3 Document Conventions
Available Models
Table 1-2 lists the frequency options available with the MS2090A Field Master Pro.
Table 1-2.Field Master Pro Frequency Options
Model Frequency Range
MS2090A-0709Signal Analyzer, 9 kHz to 9 GHz
MS2090A-0714Signal Analyzer, 9 kHz to 14 GHz
MS2090A-0720Signal Analyzer, 9 kHz to 20 GHz
MS2090A-0726Signal Analyzer, 9 kHz to 26.5 GHz
MS2090A-0732Signal Analyzer, 9 kHz to 32 GHz
MS2090A-0743Signal Analyzer, 9 kHz to 43.5 GHz
MS2090A-0754Signal Analyzer, 9 kHz to 54 GHz
Available Options
Available options for the Field Master Pro are listed in Table 1-3.
MS2090A-08885G NR Downlink Measurements (requires GPS option MS2090A-0031)
MS2090A-xxxx-0097 Accredited Calibration to ISO17025 and ANSI/NCSL Z540-1.
MS2090A-xxxx-0098 Standard Calibration to ISO17025 and ANSI/NCSL Z540-1.
MS2090A-xxxx-0099 Premium Calibration to ISO17025 and ANSI/NCSL Z540-1.
a. xxxx is the frequency option number of the instrument.
a
Includes calibration certificate, test report, and uncertainty data.
Includes calibration certificate.
Includes calibration certificate, test report, and uncertainty data.
MS2090A UGPN: 10580-00444 Rev. D1-3
1-4 Instrument Care and Preventive MaintenanceGeneral Information
1-4Instrument Care and Preventive Maintenance
Instrument care and preventive maintenance consist of proper operation in a suitable environment, occasional
cleaning of the instrument, and inspecting and cleaning the RF connectors and all accessories before use.
Clean the instrument with a soft, lint-free cloth dampened with water or water and a mild cleaning solution.
CautionTo avoid damaging the display or case, do not use solvents or abrasive cleaners.
Ventilation and Cooling
The Field Master Pro provides active cooling of the internal components to prevent damage from overheating.
The airflow vents on the edges and bottom of the instrument must be kept clear and unobstructed while the
instrument is powered on. When using the Field Master Pro on a desktop or bench, the tilt bail can be used or
the instrument can be placed flat on its back to facilitate increased airflow.
Caution
Do not operate or store the Field Master Pro in extreme environments. Refer to the instrument
Technical Data Sheet for the specified operating and storage conditions.
Connector Care
Clean the RF connectors and center pins with a cotton swab dampened with denatured alcohol. Visually
inspect the connectors. The fingers of the N(f) connectors and the pins of the N(m) connectors should be
unbroken and uniform in appearance. If you are unsure whether the connectors are undamaged, gauge the
connectors to confirm that the dimensions are correct. Visually inspect the test port cable(s). The test port
cable should be uniform in appearance and not stretched, kinked, dented, or broken.
To prevent damage to your instrument, do not use pliers or a plain wrench to tighten the Type-N connectors.
The recommended torque is 12 lbf · in to 15 lbf· in (1.36 N·m to 1.70 N · m). Inadequate torque settings can
affect measurement accuracy. Over-tightening connectors can damage the cable, the connector, the
instrument, or all of these items.
Visually inspect connectors for general wear, cleanliness, and for damage such as bent pins or connector rings.
Repair or replace damaged connectors immediately. Dirty connectors can limit the accuracy of your
measurements. Damaged connectors can harm the instrument. Connection of cables carrying an electrostatic
potential, excess power, or excess voltage can damage the connector, the instrument, or both.
1-4PN: 10580-00444 Rev. DMS2090A UG
General Information1-4 Instrument Care and Preventive Maintenance
Connecting Procedure
1. Carefully align the connectors. The male connector center pin must slip concentrically into the contact
fingers of the female connector.
2. Align and push connectors straight together. Do not twist or screw them together. A slight resistance can
usually be felt as the center conductors mate.
3. To tighten, turn the connector nut, not the connector body. Major damage can occur to the center
conductor and to the outer conductor if the connector body is twisted.
4. If you use a torque wrench, initially tighten by hand so that approximately 1/8 turn or 45 degrees of
rotation remains for the final tightening with the torque wrench.
Relieve any side pressure on the connection (such as from long or heavy cables) in order to assure
consistent torque. Use an open-end wrench to keep the connector body from turning while tightening
with the torque wrench.
Do not over-torque the connector.
Disconnecting Procedure
1. If a wrench is needed, use an open-end wrench to keep the connector body from turning while loosening
with a second wrench.
2. Complete the disconnection by hand, turning only the connector nut.
3. Pull the connectors straight apart without twisting or bending.
MS2090A UGPN: 10580-00444 Rev. D1-5
1-5 Calibration and VerificationGeneral Information
ESD Caution
The Field Master Pro, like other high performance instruments, is susceptible to electrostatic discharge (ESD)
damage. Coaxial cables and antennas often build up a static charge, which (if allowed to discharge by
connecting directly to the instrument without discharging the static charge) may damage the Field Master Pro
input circuitry. Instrument operators must be aware of the potential for ESD damage and take all necessary
precautions.
Operators should exercise practices outlined within industry standards such as JEDEC-625 (EIA-625),
MIL-HDBK-263, and MIL-STD-1686, which pertain to ESD and ESDS devices, equipment, and practices.
Because these apply to the Field Master Pro, it is recommended that any static charges that may be present be
dissipated before connecting coaxial cables or antennas to the instrument. This may be as simple as
temporarily attaching a short or load device to the cable or antenna prior to attaching to the Field Master Pro.
It is important to remember that the operator may also carry a static charge that can cause damage. Following
the practices outlined in the above standards will ensure a safe environment for both personnel and
equipment.
1-5Calibration and Verification
The Field Master Pro comes fully calibrated from the factory and there are no field-adjustable components.
Anritsu recommends annual calibration and performance verification by local Anritsu service centers.
Accredited calibration to ISO17025 and ANSI/NCSL Z540-1 are available and can include a calibration
certificate, test report, and uncertainty data. Contact Anritsu sales and service centers for more information.
1-6Contacting Anritsu for Sales and Service
To contact Anritsu, visit the following URL and select the services in your region:
http://www.anritsu.com/contact-us
1-6PN: 10580-00444 Rev. DMS2090A UG
Chapter 2 — Instrument Overview
2-1Introduction
This chapter provides an overview of the Anritsu MS2090A Field Master Pro. It describes the instrument
hardware features, touch screen display, general system settings and instrument configurations, and the
connector panels. For detailed information on the instrument’s user interface and functions, refer to these
sections:
The Field Master Pro uses a touch screen for data input. The menus can vary depending on the current
measurement configuration, installed options, and selected instrument function.
1. Touch Screen Display
2. “Top Connector Panel” on page 2-3
3. Shoulder Strap D-Ring Mount
4. Fan Ventilation Ports
5. “Side Connector Panel” on page 2-5
6. Battery Cover (see “Replacing the Battery” on page 2-9)
7. Power LED/Button and Battery Charge LED (see Section 2-6 “Turning On the MS2090A Field Master Pro”)
8. Handle and Stylus
Figure 2-1.Front Panel Overview
2-2PN: 10580-00444 Rev. DMS2090A UG
Instrument Overview2-3 Connector Panels
1
345678
2
2-3Connector Panels
The MS2090A Field Master Pro uses two connector panels to provide for all physical IO. These panels use a
variety of connector types intended for their purpose.
RF Connectors
The main RF input connector can be Type N, Type K, or Type V, depending on the frequency option that is
installed. These are ruggedized 50 Ω connectors. Type N connectors are female and Type K and V are male.
Additional IO is provided with the SMA and SMB style connectors. The SMA connectors are 50 Ω female and
the SMB connectors are 50 Ω jack slip-on connectors.
To prevent damage to your instrument, do not use pliers or a plain wrench to tighten the connectors.
Caution
Top Connector Panel
Figure 2-2 shows the top connector panel on the MS2090A.
Do not overtighten the connector. The recommended torque for Type K and V is 8 lbf·in (0.9 N·m or
90 N·cm). The recommended torque for Type N is 12 lbf·in (1.35 N·m or 135 N·cm).
Figure 2-2.Test Panel Connectors
1. RF In Port
This is a 50 Ω ruggedized connector of the following:
• Type N female with options 709, 714, and 720
• Type K male with options 26, 32, and 43
• Type V male with option 754
To prevent damage to your instrument, do not try to mate incorrect connector types or use pliers or a plain
wrench to tighten the connector. Do not overtighten the connector. The recommended torque for Type K and V
is 8 lbf·in (0.9 N·m or 90 N·cm). The recommended torque for Type N is 12 lbf·in (1.35 N·m or 135 N·cm).
2. IF Out
This 50 Ω SMB jack connector provides internal IF output. The nominal frequency range is 325 MHz with
FFT capture bandwidth ≤ 32 MHz and 300 MHz with FFT capture bandwidth = 100 MHz. The nominal
RF output level is –4 dBm with a 10 MHz, –20 dBm input, and with 0 dB input attenuation and preamp off.
The spectrum can be inverted in certain RF input bands. Refer to “Zero Span IF Output (Option 89)”
on page 3-10. This is a slip-on connector that should seat with a click.
MS2090A UGPN: 10580-00444 Rev. D2-3
2-3 Connector PanelsInstrument Overview
3. USB Interface – Type A
The Field Master Pro has three Type A USB connectors that accept USB storage devices for saving
measurements, setup data, and screen images. Two connectors are located on the top panel and one is located
in the side panel.
4. GPS Antenna Connector
The GPS antenna connection on the Field Master Pro is type SMA female. This connector also provides
5.0/3.3 VDC for an active GPS antenna. To prevent damage to your instrument, do not use pliers or a wrench to
tighten the connector.
5. Bias Voltage
The power supply is set up to provide 1 V to 34 V with a resolution of 0.1 V. The maximum current is 1 A, but
with at total maximum power of 15 W.
6. Trigger In/Out
A TTL signal that is applied to the external trigger 50 Ω SMB jack input connector causes a single sweep to
occur. In spectrum analysis, triggering is generally used in zero span, and triggering occurs on the rising edge
of the signal. After the sweep is complete, the resultant trace is displayed until the next trigger signal arrives.
This is a slip-on connector that should seat with a click.
7. Trigger In/Out / Ref Out (10 MHz)
This port can be configured as a trigger in/out as above or as a reference output. The reference output port is a
50 Ω SMB male connector that provides 10 MHz at approximately –7 dBm to 0 dBm. This is a slip-on connector
that should seat with a click.
8. Ref In
The external reference input port is a 50 Ω SMB jack connector that provides for input of an external frequency
reference. Refer to your Technical Data Sheet for valid frequencies. This is a slip-on connector that should seat
with a click. The instrument automatically selects the frequency reference in the following order of priority:
external, GPS, then the internal time base.
2-4PN: 10580-00444 Rev. DMS2090A UG
Instrument Overview2-3 Connector Panels
1
2
3
4
5
6
7
Data Out
Side Connector Panel
Figure 2-3 shows the MS2090A side connector panel.
Figure 2-3.Side Panel Connectors
1. USB Interface – Type A
The Field Master Pro has three Type A USB connectors that accept USB storage devices for saving
measurements, setup data, and screen images. Two connectors are located on the top panel and one more is
located in the side panel.
2. USB Interface – Type C
The USB Type-C interface is not yet enabled. The interface will be used to connect the Field Master Pro
directly to a PC.
3. LAN Connection
The RJ-45 connector is used to connect the Field Master Pro to a local area network or directly to a PC with an
Ethernet crossover cable. See “Ethernet Connection” on page 2-25 for more details.
MS2090A UGPN: 10580-00444 Rev. D2-5
2-3 Connector PanelsInstrument Overview
4. Data Out Port
The Data Out port is not yet enabled. This is a multi-purpose, hot pluggable input/output (I/O) interface. These
connectors are designed to fit all popular mechanical architectures and support Generation 1 PCIe data rates
at 2.5 Gbps through Generation 2 data rates at 5.0 Gbps.
Note
The Data Out port is not currently active. Functionality will be added via an upcoming software
update.
5. MicroSD
The Micro Secure Digital slot is a small expansion slot located on the side panel. The slot accepts industry
standard MicroSD storage cards and can be used for storing measurements, setup data, and screen images
similar to USB storage devices.
Note
The MicroSD slot is not currently active. Functionality will be added via an upcoming software
update.
6. Headset Jack
NoteThe headset jack is not yet enabled. Functionality will be added via an upcoming software update.
The 3-wire headset jack provides audio output from the built-in sounds generated by the instrument. The jack
accepts a 3.5 mm 3-wire miniature phone plug such as those commonly used with cellular telephones.
7. External Power
This is a 2.5 mm by 5.5 mm barrel connector, 15 VDC, 5 A, center positive. The external power connector is
used to power the unit and for battery charging. An orange blinking LED power button indicates that the
instrument battery is being charged by the external charging unit. The indicator is a steady green when the
battery is fully charged.
When using the AC-DC Adapter, always use a three-wire power cable that is connected to a
Warning
three-wire power line outlet. If power is supplied without grounding the equipment in this manner, the
user is at risk of receiving a severe or fatal electric shock.
Refer to “Turning On the MS2090A Field Master Pro” on page 2-10.
2-6PN: 10580-00444 Rev. DMS2090A UG
Instrument Overview2-4 Tilt Bail Stand
2-4Tilt Bail Stand
The attached tilt bail can be used for desktop operation. The tilt bail provides a backward tilt for improved
stability and air flow. To deploy the tilt bail, pull the bottom of the tilt bail away from the back of the
instrument. To store the tilt bail, push the bottom of the bail towards the back of the instrument and snap the
bail into the clips on the back of the instrument.
Figure 2-4.Tilt Bail Stand
MS2090A UGPN: 10580-00444 Rev. D2-7
2-5 Battery InformationInstrument Overview
2-5Battery Information
The batteries that are supplied with the Field Master Pro may need charging before use. They can be charged
using either the provided AC-DC adapter or the DC adapter. Refer to “Battery Status” for a description of the
battery status and information panel. The batteries can be charged in the instrument or removed for charging
in an optional battery charger. The batteries are installed at the factory and can be replaced by the user. Refer
to the next section for information on removing the batteries. Battery status is shown in “Battery Information”
on page 2-37.
Use only Anritsu-approved batteries, adapters, and chargers with this instrument. The batteries will
charge at a faster rate when the instrument is turned off. To prolong the useful battery life, the
Note
Caution
NoteAnritsu Company recommends removing the battery for long-term storage of the instrument.
internal charging circuit monitors the battery temperature. Normal charging occurs when the battery
temperature is between 0 °C and 45 °C. Charging is paused if the internal battery temperature is
outside this range.
When using the automotive cigarette lighter adapter, always verify that the supply is rated for a
minimum of 75 Watts @ 15 VDC, and that the socket is clear of any dirt or debris. If the adapter plug
becomes hot to the touch during operation, discontinue use immediately.
2-8PN: 10580-00444 Rev. DMS2090A UG
Instrument Overview2-5 Battery Information
Data Out
Replacing the Battery
The battery can be replaced without the use of tools. The battery compartment door is located on the lower
right side of the instrument (when you are facing the measurement display). To remove the battery:
1. Push in and slide the battery door tab to disengage it.
2. Remove the battery door.
3. Pull straight out on the lanyard to remove the battery pack from the instrument.
Note
When inserting the battery, the battery contacts should face up and slide in first. If the battery door
does not close tightly, the battery may be inserted incorrectly.
Figure 2-5.Battery Removal
MS2090A UGPN: 10580-00444 Rev. D2-9
2-6 Turning On the MS2090A Field Master ProInstrument Overview
2-6Turning On the MS2090A Field Master Pro
The Anritsu MS2090A Field Master Pro is capable of approximately two hours of continuous operation from a
fully charged, field-replaceable battery (refer to “Battery Information” on page 2-8). The instrument can also be
operated from a 15 VDC source (which will simultaneously charge the battery). This can be achieved with
either the Anritsu AC-DC adapter or the automotive power adapter, which can be purchased as an optional
accessory. Refer to the instrument Technical Data Sheet for more options and accessories.
When using the Automotive Power Adapter, always verify that the supply is rated for a minimum of
Caution
To turn on the Field Master Pro, briefly press the power button on the lower right of the touchscreen (see
Figure 2-1 on page 2-2).
The Field Master Pro takes approximately 60 seconds to complete power-up and to load the instrument
software. At the completion of this process, the instrument is ready for use.
75 Watts @ 15 VDC, and that the socket is clear of any dirt or debris. If the adapter plug becomes
hot to the touch during operation, discontinue use immediately.
Note
Keep the fan inlet and exhaust ports clear of obstructions at all times for proper ventilation and
cooling of the instrument.
Power/Charge LED Indicators
The power/charge LED is integrated with the power button. The LED has the following indicators:
• Solid white when the instrument is on or booting up.
• Slowly blinks orange when the instrument is off and connected to an external power source, and the
battery is charging.
• Solid green when the instrument is off and connected to an external power source, and the battery is
fully charged.
• Solid red when the instrument is off and connected to an external power source, and the battery is NOT
installed or has a fault.
Shutting Down and Restarting
To shut down or restart the instrument, briefly press the power button (a shutdown dialog will be displayed),
then select RESTART INSTRUMENT or POWER OFF. The current setup is saved when the instrument is
shut down or is restarted. Once the instrument shuts down, it will either power off completely (if running on
batteries) or it will go into a low power state (if running on external power).
2-10PN: 10580-00444 Rev. DMS2090A UG
Instrument Overview2-7 GUI Overview
1
34
2
5
2-7GUI Overview
The MS2090A Field Master Pro software controls all instrument functions. The software runs locally on the
instrument and primary operation is through the touch screen display. The figure below identifies the main
display areas, which are each described in more detail later in this chapter.
1. The title bar provides quick access to the system settings and informational dialogs.
2. The status and trace panel is used to show common settings and controls, and to provide trace and cursor
information. The information displayed on this panel depends on the current measurement and view settings.
Refer to the appropriate chapter in this guide for information about this panel.
3. Menus are used to configure measurement settings such as frequency, amplitude, and bandwidth, and to
enable measurement modes and views such as Spectrogram view, OBW, ACP, and SEM measurements.
4. The main menu provides access to setting menus and other instrument controls.
5. The upper area typically displays graphical data such as spectrum trace and spectrogram plots. The lower area
typically displays tabular measurement data such as marker data, demodulation results, or other measurement
data depending on the selected measurement.
Figure 2-6.GUI Overview (sample display elements)
MS2090A UGPN: 10580-00444 Rev. D2-11
2-7 GUI OverviewInstrument Overview
Operating the Touch Screen
Field Master Pro uses common touch gestures to achieve a variety of operations. These include interactions on
hot areas by pressing, double pressing (or tapping), dragging, and pinching.
Single Press: Most controls require a single press or
tap. Touch the screen briefly and then release.
Double Press: Some controls require a double press or
tap. This action is similar to a double mouse click. If a
second press is not detected in a certain time period, the
action is dismissed or considered a single press.
Figure 2-7.Touch Screen Gestures
Press and Drag: Some items can be dragged to a new
location. This action is accomplished by pressing and
holding the item lightly while dragging it to a new
location, then releasing. You can drag items such as
markers, limit line nodes, and the center frequency by
dragging the trace to the left or right.
Pinch: Some items can be reduced or expanded. This
action is accomplished by simultaneously pressing the
item with two fingers and holding the item lightly when
dragging the fingers in closer together or out farther
apart, and then releasing. You can pinch items in or out,
such as the frequency span by touching and holding the
trace in two positions, and then dragging your fingers
closer together to narrow the span or dragging your
fingers farther apart to widen the span.
2-12PN: 10580-00444 Rev. DMS2090A UG
Loading...
+ 240 hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.