Anritsu MA24105A Service Manual

Brochure/Technical Data Sheet

MA24105A

Inline Peak Power Sensor

True-RMS, 350 MHz to 4 GHz

A Standalone, Compact, and Highly Accurate Bi-Directional
Inline Peak Power Sensor for your RF Power Measurement Needs

MA24105A at a Glance

Feature Benefit

Broad Frequency Range
(350 MHz to 4 GHz)

Covers all major cellular and communication bands, such as WLL,
GSM/EDGE, CDMA/EV-DO, W-CDMA/HSPA+, WiMAX, and TD-SCDMA

Widest Measurement Range Inline Power
Sensor in its Class

Forward and Reverse Measurements Measures both transmitted power and reflections from antenna or other

True-RMS Measurements to 150 W

Standalone, Low Cost, Plug and Play Device

RF Input

Eliminates need for additional low level power sensors

system components using the single inline tool
Enables accurate average power measurements of modulated signals

Excellent tool for LTE average power measurements
Ideal for high crest factor signal and base station transmitter output power
measurements

Eliminates the need for 1 mW user calibration
Compatible with Anritsu handheld instruments
No base unit needed
No extra elements or element holder required

RF Output

USB Micro-B Port connects PC or USB

enabled handheld instruments

RF Input

2

Two Color LED
reports functional status of the sensor

RF Output

Complements Your Existing Instrument

The Anritsu MA24105A Inline Peak Power Sensor is designed to take accurate average power measurements over
2 mW to 150 W, from 350 MHz to 4 GHz. The sensor employs a “dual path” architecture that enables True -RMS measurements
over the entire frequency and dynamic range allowing users to measure CW, multi-tone and digitally modulated signals such
as GSM/EDGE, CDMA/EV-DO,W-CDMA/HSPA+, WiMAX, and TD-SCDMA. The forward direction path also include a
4 MHz bandwidth channel that has peak and comparator/integrator circuits that add measurement functions such as peak
envelope power (PEP), crest factor, complimentary cumulative distribultion function (CCDF), and burst average power.
Another detection circuit on the reverse direction adds reverse power measurement capabilities including reverse power,
reflection coefficient, return-loss, and SWR. The presence of a micro-controller along with signal conditioning circuitry,
ADC, and power supply in the sensor makes it a complete miniature power meter.

Operation with Personal Computer (PC)

The power sensor can be used with a personal computer running Microsoft® Windows via USB. It comes with a
complimentary copy of the PowerXpert™ application (version 2.11 or greater) for data display, analysis, and sensor control.
The software provides a front panel display making the personal computer appear like a traditional power meter.
The application has abundant features like data logging, power versus time graph, and offset table that enable quick
and accurate measurements.

Operation with Anritsu Handheld Instruments

Handheld instruments having the high accuracy power meter
software Option 19 can operate the MA24105A Inline Peak
Power Sensor. The MA24105A is currently compatible with
Site Master™ (S3xxE), Spectrum Master™ (MS271xE and
MS272xB), Cell Master™ (MT8212E), BTS Master™
(MT822xB), VNA Master™ (MS202xA/B and MS203xA)
and Economy Benchtop Spectrum Analyzers (MS271xB).
The power sensor easily connects to these instruments via a
USB A/Micro-B cable.

3

MA24105A Applications

Input Power (dBm)

RF power (W)

1.00

0.80

0.60

0.40

0.20

0.00

-0.20

Variance (dB)

-0.40

-0.60

-0.80

-1.00
0510 15 20 25 30 35 40 45 50 55

Figu r e 1. Measurement linearity error referenced to an
ideal thermal power sensor measurement of a 900 MHz
CW signal in the forward direction.

1.00

0.80

0.60

0.40

0.20

0.00

-0.20

Variance (dB)

-0.40

-0.60

-0.80

-1.00
0510 15 20 25 30 35 40 45 50 55

Input Power (dBm)

Figure 2. Measurement linearity error referenced to an
ideal thermal power sensor measurement of a 900 MHz
CW signal in the reverse direction.

1000

500

200

100

Figure 3 . Maximum power handling capacity of
the sensor terminated with a load having VSWR

MA24105A Maximum Power

500 1000 2000 5000

Frequency (MHz)

of 1.5 and 3.0.

4

VSWR

VSWR

High Accuracy Measurements

Accurate power measurements in the field are important for verifying
that transmitter outputs are operating at specified levels. For example,
service technicians need to verify base station output power because
lower output power can quickly translate into large coverage
differences. Highly accurate average power measurements to 150 W
are assured as the calibration data is stored directly in the sensor and all
necessary corrections (frequency and temperature) are done inside the
microprocessor of the sensor. Also, the return loss and directivity of the
instrument are optimized to maintain high accuracy. The standards used
to calibrate this sensor are directly traceable to NIST.

Continuous Monitoring of Radio Systems

This sensor is designed to have good match and low insertion loss
making it ideal for continuous monitoring of transmitter power and
antenna reflections. The data logging function in the PowerXpert
software application for PC equips the user the ability to record
measured power over time to a hard disc or other storage media. This is
useful for long term drift measurements, environmental testing, and
trend analysis. A user settable data logging interval allows a frequency
of measurement adjustment to match the user test application
requirements. Data are stored as comma-separated values (.csv) that can
be directly opened in Microsoft® Excel allowing powerful custom
analysis of measured data.

Ideal for Field

The MA24105A power sensor provides lab performance accuracy
in a rugged and portable field solution. The sensor is accurate over a
wide temperature range (0 ºC to 55 ºC), making it perfect for cellular
base station installation and maintenance applications. Field and
service technicians will appreciate the small size and versatility of
this stand-alone unit as they will not have to carry extra elements,
heavy high power attentuators, or power meters. A very easy to use
PC application with a large display makes the job even easier for
technicians who need accurate measurement results quickly.

Average Measurements of CW, Pulsed, or Modulated Signals

The MA24105A is rated to meet all specifications up to an average
input power level of 150 W, depending on load match (see figure 3).
Time varying and bursted signals can have a peak power up to 300 W.
To ensure accurate readings, the peak to average ratio (crest factor) of
signals must be less than 12 dB.

Peak Power, Crest Factor, Burst Average and Complementary
Cumulative Distribution Function (CCDF)

The MA24105A and associated PowerXpert

™

application provide

information critical to development, manufacturing and operation of

≤≤≤≤

1.5

modern communications systems. The Peak Power function enables the
user to determine the maximum power of the modulated signal envelope

≤≤≤≤

3.0

for signals with a modulation bandwidth of < 4 MHz. The ratio between
the Peak Power and Average Power result provides the Crest Factor.
Of particular use in TDMA systems, the Burst Average Function uses
duty cycle information obtained either automatically or as user-entry to
calculate the average power during a burst based on the measurement
of Average Power. Critical to those working with spread spectrum
systems, which exhibit a non-deterministic envelope, the CCDF
feature shows the percentage of the time that the peak power exceeds
a user-set threshold.

More Applications

1.00

0.80

0.60

0.40

0.20

0.00

-0.20

Variance (dB)

-0.40

-0.60

-0.80

-1.00
0510 15 20 25 30 35 40 45 50 55

Input Power (dBm)

Figure 4 . Forward average power linearity error
referenced to an ideal thermal power sensor
measurement of a W-CDMA signal at 2 GHz.

2.00

1.50

1.00

0.50

0.00

-0.50

Variance (dB)

-1.00

-1.50

-2.00
34 36 38 40 42 44 46 48 50 52 54

Input Power (dBm)

Figure 5 . Forward Peak power linearity error
referenced to Anritsu MA2491A peak power sensor
measurement of a W-CDMA signal.

Reverse Power, Reflection Coefficient (magnitude),
Return Loss and Standing Wave Ratio (SWR)

The MA24105A sensor’s capability to measure both forward and
reverse average power also permits the user to gain information
about the load mismatch. This result is conveniently available in
Reflection Coefficient (magnitude), Return Loss and SWR forms.

Optimized for Production

The MA24105A facilitates lab quality measurements on the production
floor for a fraction of cost of existing solutions. Since the sensor is
connected directly to the PC, there is no need for a base unit saving
valuable rack space. The Inline Sensor can measure signals with levels
as low as 2 mW, thus eliminating the need of terminated power sensors
in the production line resulting in reduced capital expenditure and
set up costs. The sensor’s speed is optimized for best accuracy and
noise performance thus making it suitable for wide variety of ATE
applications. Multiple sensors can be connected and remote controlled
via a single PC allowing flexibility to match specific measurement
needs. A software toolkit is supplied with every sensor containing
a sample program with source code for controlling the sensor.
The 1 mW reference calibrator typically needed by power meters has
also been eliminated as the connecting USB cable only transfers digital
data (corrected power), minimizing test station complexity, sensor
handling and test times.

Remote Monitoring via LAN or Data-Logging

Since the USB cable connected to the sensor only transfers corrected
power back to the host, a 1 mW reference calibrator is not required.
USB data transfer capabilities limit the cable length to 5 meters
prohibiting remote monitoring. However, this limitation can be
overcome by installing a low cost USB-to-LAN hub converter
(e.g. BELKIN® F5L009) at the measurement site along with the
MA24105A. In this way, power monitoring can be performed across
continents if desired. Or, data can be logged in a .csv file for offline
analysis (see figure 6).

Figure 6 . Remote monitoring via LAN
or data-logging

Control Room

MA24105A
Inline Peak

Power Sensor

USB to LAN

Base Station

Ethernet Ethernet

LAN

Converter

Remote Site

Antenna

To Antenna

5

Specifications

Sensor

Frequency Range 350 MHz to 4 GHz
Measurement Range 2 mW to 150 W (+3 dBm to +51.76 dBm)

Input Return Loss ≥ 29.5 dB from 350 MHz to 3 GHz

Insertion Loss (typical) ≤ 0.15 dB from 350 MHz to 1.25 GHz

Directivity

Measurement Channel 2 (Forward and Reverse)
Signal Channel Bandwidth Average: 100 Hz

Base Average Power Measurement

Measurement Range Range 1: 2 mW to 6.31 W (+3 dBm to +38 dBm)

Maximum Power
Measurement Uncertainty

Effect of Noise

Effect of Zero Set

Effect of Zero Drift

Effect of Temperature (0 ºC to 50 ºC) ± 0.06 dB

Effect of Digital Modulation

(7)

(1)

(2)

(3)

(3)

(4)

Forward Average Power Measurement (Forward Average Power Uncertainty is same as Base Average Power Uncertainty)
Forward Peak Power Measurement

Measurement Range 2 W to 300 W (+ 33 dBm to + 54.77 dBm)
Burst Signal Measurement Base Uncertainty Repetition Rate: ≥ 10/s

Effect of Low Repetition Rate (≤ 10/s) ± 1.6% ± 150 mW
Effect of Low Duty Cycle (0.1% to 10%) ± 100 mW
Effect of Short Burst Width (500 ps to 1 µs)

(200 ps to < 500 ps)

Effect of Temperature on Peak Circuit (0 ºC to 50 ºC) ± 6%

Spread-spectrum Measurement Uncertainty

Reverse Power Measurement

Measurements Range 2 mW to 150 W (+ 3 dBm to + 51.76 dBm)
Maximum Power
Measurement Uncertainty

(7)

(1)

(5)

Spread-spectrum Measurement Uncertainty

Complementary Cumulative Distribution Function (CCDF)

Measurement Uncertainty

Threshold Range 2 mW to 300 mW (+ 3 dBm to + 54.77 dBm)
Accuracy of Threshold ± (Base Average Power Uncertainty + 5% + 500 mW)

(10)

Burst Average Power

Measurement Uncertainty (User Mode) Same as Base Average Power Uncertainty except Zero Set, Zero Drift and Noise are divided by duty cycle (t/T)
Measurement Uncertainty (Auto Mode)

(11)

Combination Measurements

Reflection Measurement Uncertainty ± (Base Average Power Uncertainty + Reverse Power Measurement Uncertainty)
Crest Factor Uncertainty ± (Base Average Power Uncertainty + Forward Peak Power Measurement Uncertainty)

System

Measurand Forward/Reverse

Measurement Resolution 0.01 dB 0.01 dB 0.01 dB 0.01 dB 0.01%
Offset Range 100 dB 100 dB 100 dB 100 dB 100%
Averaging Range 1 to 512 1 to 512 1 to 512 1 to 512 1 to 512
Measurement Speed (typical)

(9)

Interface USB 2.0
Host Operating System (PowerXpert™ version 2.11 compatibility) Microsoft

6

≥ 26.5 dB from > 3 GHz to 4 GHz

≤ 0.20 dB from > 1.25 GHz to 4 GHz
≥ 28 dB from 350 MHz to < 1 GHz

≥ 30 dB from ≥ 1 GHz to ≤ 3 GHz
≥ 28 dB from > 3 GHz to 4 GHz

Peak (Selectable): 4 MHz (full)

200 kHz
4 kHz

Range 2: 6.31 W to 150 W (+38 dBm to +51.76 dBm)

150 W average, 300 W pulse

± 3.8% (Range 1 and Range 2)

± 170 µW (Range 1)

± 1.9 mW (Range 2)

± 250 µW (Range 1)
± 3.0 mW (Range 2)

± 230 µW (Range 1)
± 2.7 mW (Range 2)

± 0.02 dB

(5)

Full Bandwidth: ± (Base Average Power Uncertainty +7% + 400 mW)

Duty Cycle: ≥ 10%:

± 5%
± 10%

±

(Base Average Power Uncertainty

+ 15% + 400 mW)

4 kHz and 200 kHz Bandwidth: ± (Base Average Power Uncertainty +3% + 200 mW)

150 W average
± (Base Average Power Uncertainty)

(Base Average Power Uncertainty

±

+ 15% + 400 mW)

± 0.2%

± (Base Average Power Uncertainty except Zero Set, Zero Drift and Noise are divided by duty cycle (

True-RMS/Average power

Peak Power

Crest Factor

Burst Average Power CCDF

t

/

T

) ± 2%)

1.7 meas. per second 2.5 meas. per second 1.4 meas. per second 0.7 meas. per second 1.6 meas. per second

®

Windows® Vista, Window® 7 , Windows® XP, and Windows® 2000

Specifications

General

USB
Size (H x W x D)
Weight 535 g (1.18 lb)

(8)

Current (via host USB)

102 mm x 87 mm x 30 mm

(6)

180 mA typical at 5 V

Environmental Tests were performed per MIL-PRF-28800F (Class 2)

Operating Temperature Range 0 °C to + 55 °C
Storage Temperature Range – 50 °C to + 80 °C

Humidity 45% relative humidity at 55 °C (non-condensing)

Shock 30 g's half-sine, 11 ms duration
Vibration Sinusoidal: 5 Hz to 55 Hz, 3 g's max.

EMC Meets EN 61326, EN 55011

Safety Meets EN 61010-1

Notes:

All specs are applicable after twenty minutes warm-up at room temperature and after zeroing unless specified otherwise.
(1) Expanded uncertainty with K=2 for power measurements of a CW signal with a matched load. Measurement results referenced to the input side of the sensor.

(2) Expanded uncertainty with K=2 after zero operation when measured with 128 averages for 5 minutes. In high aperture time mode, noise is 50 μW and 12 mW in range 1 and range 2 respectively.

(3) After one hour warm-up and zero operation. Measured with 128 averages for one hour keeping the temperature within ± 1 ºC.
(4) Measurement uncertainty with reference to a CW signal of equal power and frequency at 25 ºC.
(5) All measurement errors "Effects" should be RSSed before directly added to "Base" error for overall measurement uncertainty.
(6) 150 mA max.
(7) Maximum power depends upon the system SWR and frequency of operation (see Figure 3)
(8) Not including N connectors.
(9) Measurement speed is the rate at which the measurement or calculation is updated in a data log.

(10) Pulse Power > + 37 dBm, T > 50 μs (Full BW), T > 400 μs (200 kHz BW), T > 20 ms (4 kHz BW)
(11) Average Power > + 33 dBm, Pulse width > 5 μs (Full BW), Pulse Width > 40 μs (200 kHz BW), Pulse Width > 2 ms (4 kHz BW)

75% relative humidity at 40 °C (non-condensing)
95% relative humidity at 30 °C (non-condensing)

Random: 10 Hz to 500 Hz
Power Spectral Density: 0.03 g

2

/Hz

Ordering Information

MA24105A Inline Peak Power Sensor

Available Options

Option Number Description

MA24105A-098 Option 98, Standard calibration to Z540, ISO-17025

MA24105A-099 Option 99, Premium calibration to Z540, ISO-17025

Included Accessories

Model Description

2000-1606-R 1.8 m USB 2.0 A to Micro-B cable
2300-526 Product CD - Anritsu PowerXpert and USB power sensors
10585-00021 Quick Start Guide

Optional Accessories

Calibrated Torque Wrenches

Model Description

01-200 Calibrated torque wrench for N connector

Power Attenuators

Model

3-1010-122 DC to 12.4 GHz 20 dB, 5 W, 50 Ω N male to N female
3-1010-123 DC to 8.5 GHz 30 dB, 50 W, 50 Ω N male to N female
3-1010-124 DC to 8.5 GHz 40 dB, 100 W, 50 Ω N male to N female

42N50-20 DC to 18 GHz 20 dB, 5 W, 50 Ω N male to N female

42N50A-30 DC to 18 GHz 30 dB, 50 W, 50 Ω N male to N female

1010-121 DC to 18 GHz 40 dB, 100 W, 50 Ω N male to N female
1010-127-R DC to 3 GHz 30 dB, 150 W, 50 Ω N male to N female
1010-128-R DC to 3 GHz 40 dB, 150 W, 50 Ω N male to N female

Frequency range Rating Connectors

Precision Terminations
(To be used in conjunction with appropriate Power Attenuators)

Model

28N50-3

28N50-2

28NF50-2

Frequency range Description Connectors

DC to 8.6 GHz 50 Ω N male

DC to 18 GHz 40 dB, 50 Ω N male

DC to 18 GHz 40 dB, 50 Ω N female

Precision Coaxial Adapters

Model Frequency range Connectors

510-90 DC to 3.3 GHz N male to 7/16 DIN female
510-91 DC to 3.3 GHz N female to 7/16 DIN female
510-92 DC to 3.3 GHz N male to 7/16 DIN male
510-93 DC to 3.3 GHz N female to 7/16 DIN male

33NFNF50B DC to 18 GHz N female to N female

33NNF50B DC to 18 GHz N male to N female

33NN50B DC to 18 GHz N male to N male

34AN50 DC to 18 GHz GPC-7 to N male

34ANF50 DC to 18 GHz GPC-7 to N female

34NFK50 DC to 18 GHz N female to K male

34NFKF50 DC to 18 GHz N female to K female

34NK50 DC to 18 GHz N male to K male

34NKF50 DC to 18 GHz N male to K female

7

Anritsu Corporation

5-1-1 Onna, Atsugi-shi, Kanagawa, 243-8555 Japan
Phone: [phone]
Fax: [phone]

• U.S.A.
Anritsu Company

1155 East Collins Boulevard, Suite 100,
Richardson, TX, 75081 U.S.A.
Toll Free: 1-800-ANRITSU (267-4878)
Phone: [phone]
Fax: [phone]

• Canada
Anritsu Electronics Ltd.

700 Silver Seven Road, Suite 120, Kanata,
Ontario K2V 1C3, Canada
Phone: [phone]
Fax: [phone]

• Brazil
Anritsu Electrônica Ltda.

Praça Amadeu Amaral, 27 - 1 Andar
01327-010 - Bela Vista - São Paulo - SP - Brasil
Phone: [phone]
Fax: [phone]

• Mexico
Anritsu Company, S.A. de C.V.

Av. Ejército Nacional No. 579 Piso 9, Col. Granada
11520 México, D.F., México
Phone: [phone]
Fax: [phone]

• U.K.
Anritsu EMEA Ltd.

200 Capability Green, Luton, Bedfordshire LU1 3LU, U.K.
Phone: [phone]
Fax: [phone]

• France
Anritsu S.A.

12 Avenue du Québec, Bâtiment Iris 1-Silic 638,
91140 VILLEBON SUR YVETTE, France
Phone: [phone]
Fax: [phone]

• Germany
Anritsu GmbH

Nemetschek Haus, Konrad-Zuse-Platz 1
81829 München, Germany
Phone: [phone]
Fax: [phone]

• Italy
Anritsu S.p.A.

Via Elio Vittorini, 129, 00144 Roma, Italy
Phone: [phone]
Fax: [phone]

• Sweden
Anritsu AB

Borgafjordsgatan 13, 164 40 KISTA, Sweden
Phone: [phone]
Fax: [phone]

• Finland
Anritsu AB

Teknobulevardi 3-5, FI-01530 VANTAA, Finland
Phone: [phone]
Fax: [phone]

• Denmark
Anritsu A/S (for Service Assurance)
Anritsu AB (for Test & Measurement)

Kirkebjerg Allé 90 DK-2605 Brøndby, Denmark
Phone: [phone]
Fax: [phone]

• Russia
Anritsu EMEA Ltd.

Representation Office in Russia

Tverskaya str. 16/2, bld. 1, 7th floor.
Russia, 125009, Moscow
Phone: [phone]
Fax: [phone]

• United Arab Emirates
Anritsu EMEA Ltd.

Dubai Liaison Office

P O Box 500413 - Dubai Internet City
Al Thuraya Building, Tower 1, Suite 701, 7th Floor
Dubai, United Arab Emirates
Phone: [phone]
Fax: [phone]

• Singapore
Anritsu Pte. Ltd.

60 Alexandra Terrace, #02-08, The Comtech (Lobby A)
Singapore 118502
Phone: [phone]
Fax: [phone]

• India
Anritsu Pte. Ltd.

India Branch Office

3rd Floor, Shri Lakshminarayan Niwas, #2726, 80 ft Road,
HAL 3rd Stage, Bangalore - 560 075, India
Phone: [phone]
Fax: [phone]

• P. R. China (Hong Kong)
Anritsu Company Ltd.

Units 4 & 5, 28th Floor, Greenfield Tower, Concordia Plaza,
No. 1 Science Museum Road, Tsim Sha Tsui East, Kowloon,
Hong Kong, P.R. China
Phone: [phone]
Fax: [phone]

• P. R. China (Beijing)
Anritsu Company Ltd.
Beijing Representative Office

Room 2008, Beijing Fortune Building,
No. 5 , Dong-San-Huan Bei Road,
Chao-Yang District, Beijing 100004, P.R. China
Phone: [phone]
Fax: [phone]

• Korea
Anritsu Corporation, Ltd.

8F Hyunjuk Bldg. 832-41, Yeoksam-Dong,
Kangnam-ku, Seoul, 135-080, Korea
Phone: [phone]
Fax: [phone]

• Australia
Anritsu Pty Ltd.

Unit 21/270 Ferntree Gully Road, Notting Hill
Victoria, 3168, Australia
Phone: [phone]
Fax: [phone]

• Taiwan
Anritsu Company Inc.

7F, No. 316, Sec. 1, Neihu Rd., Taipei 114, Taiwan
Phone: [phone]
Fax: [phone]

Please Contact:

® Anritsu All trademarks are registered trademarks of

their respective companies. Data subject to change
without notice. For the most recent specifications visit:
www.anritsu.com

Catalog No. 11410-00621, Rev. C Printed in United States 2011-11

©2011 Anritsu Company. All Rights Reserved