Anritsu MA24103A Inline Peak Power Sensor, True-RMS, 25 MHz to 1 GHz

USB inline peak power sensor for forward and reverse true-RMS power measurements from 2 mW to 150 W over 25 MHz to 1 GHz.

Frequency Range: 25 MHz to 1 GHz
Measurement Range: 2 mW to 150 W (+3 dBm to +51.76 dBm)
Input Return Loss: ≥ 29.5 dB from 25 MHz to 1 GHz
Insertion Loss: ≤ 0.15 dB from 25 MHz to 1 GHz

Datasheet

Overview

The Anritsu MA24103A Inline Peak Power Sensor takes average power measurements over 2 mW to 150 W across a frequency range of 25 MHz to 1 GHz. It measures CW and multi-tone signals. It is the lower-frequency member of the MA2410xA inline sensor family; the MA24105A covers 350 MHz to 4 GHz.

The sensor uses a "dual path" architecture that allows true-RMS measurements over its full frequency and dynamic range. The forward direction path has a 4 MHz bandwidth channel with peak and comparator/integrator circuits. These add peak envelope power (PEP), crest factor, complementary cumulative distribution function (CCDF) and burst average power measurements. A detection circuit in the reverse direction adds reverse power, reflection coefficient, return loss and SWR measurements.

A micro-controller, signal conditioning circuitry, an ADC and a power supply are built into the sensor, so it works as a complete miniature power meter.

Operation with a PC

The sensor connects over USB to a PC running Microsoft Windows, including Windows 11. It is used with the Anritsu PowerXpert application (v3.49 or later) for data display, analysis and sensor control. PowerXpert provides data logging, power-versus-time graphs, a single-sensor display, real-time settings updates and offset tables.

Operation with Anritsu handheld instruments

Anritsu handheld instruments with the high accuracy power meter software Option 19 can operate the sensor through a USB A/Micro-B cable. It is compatible with most Anritsu RF and microwave handheld instruments. Compatibility should be checked against the technical data sheet of the instrument.

Key Features

True-RMS average power measurements from 2 mW to 150 W, 25 MHz to 1 GHz
Forward and reverse measurements of transmitted power and reflections with a single inline sensor
Peak envelope power, crest factor, CCDF and burst average power via 4 MHz forward measurement channel
Reverse power, reflection coefficient, return loss and SWR measurements
High crest factor signal and base station transmitter output power measurements
High power handling > +51.7 dBm
Plug and play USB operation with a Windows PC and Anritsu PowerXpert software v3.49 or later
Compatible with most Anritsu handheld instruments with power meter software Option 19
Built-in micro-controller, signal conditioning, ADC and power supply

Specifications

Base Average Power Measurement

Frequency Range	25 MHz to 1 GHz
Measurement Range	2 mW to 150 W (+3 dBm to +51.76 dBm)
Input Return Loss	≥ 29.5 dB from 25 MHz to 1 GHz Web page lists >29.5 dB
Insertion Loss	≤ 0.15 dB from 25 MHz to 1 GHz Typical
Directivity	≥ 28 dB from 25 MHz to 1 GHz Typical
Signal Channel Bandwidth	Average 100 Hz; Peak (Selectable) 4 MHz (Full), 200 kHz, 4 kHz Measurement channel (forward and reverse)
Measurement Range, Range 1	2 mW to 6.31 W (+3 dBm to +38 dBm)
Measurement Range, Range 2	6.31 W to 150 W (+38 dBm to +51.76 dBm)
Maximum Power	150 W average Maximum power depends upon the system SWR and frequency of operation
Measurement Uncertainty	±3.8% (Range 1 and Range 2) Expanded uncertainty with K=2 for power measurements of a CW signal with a matched load; results referenced to the input side of the sensor
Effect of Noise	±510 μW (Range 1 ≥ 100 MHz), 1.2 mW (Range 1, < 100 MHz); ±6.1 mW (Range 2 ≥ 100 MHz), 17.7 mW (Range 2, < 100 MHz); ±400 μW (Reverse ≥ 100 MHz), 930 µW (Reverse, < 100 MHz) Expanded uncertainty with K=2 after zero operation, 128 averages for 5 minutes. In high aperture time mode, noise is 50 μW and 12 mW in range 1 and range 2 respectively
Effect of Zero Set	±380 μW (Range 1 ≥ 100 MHz), 810 µW (Range 1, < 100 MHz); ±4.1 mW (Range 2 ≥ 100 MHz), 11.5 mW (Range 2, < 100 MHz); ±240 μW (Reverse ≥ 100 MHz), 820 µW (Reverse, < 100 MHz) One-hour warm up with no operation, 128 averages for one hour, temperature within ±1 ºC
Effect of Zero Drift	±120 μW (Range 1 ≥ 100 MHz), 170 µW (Range 1, < 100 MHz); ±760 µW (Range 2 ≥ 100 MHz), 1.8 mW (Range 2, < 100 MHz); ±51 μW (Reverse ≥ 100 MHz), 320 µW (Reverse, < 100 MHz) One-hour warm up with no operation, 128 averages for one hour, temperature within ±1 ºC
Effect of Temperature (0 ºC to 50 ºC)	±0.06 dB
RF Connectors	N (F)

Forward Peak Power Measurement

Measurement Range, Burst Signal	2 W to 300 W (+33 dBm to +54.77 dBm)
Measurement Base Uncertainty	Repetition Rate ≥10/s, Duty Cycle ≥10%; Full Bandwidth: ±(Base Average Power Uncertainty +7% +400 mW); 4 kHz and 200 kHz Bandwidth: ±(Base Average Power Uncertainty +3% +400 mW) ≥ 100 MHz: Pulse Power > +34 dBm, < 100 MHz: Pulse Power > +37 dBm, Pulse Width > 1 µs (Full BW), > 5 µs (200 kHz BW), > 200 µs (4 kHz BW)
Effect of Low Repetition Rate	±1.6% ±150 mW (≤ 10/s)
Effect of Low Duty Cycle	±100 mW (0.1% to 10%)
Effect of Short Burst Width	±5% (500 ns to 1 μs); ±10% (200 ns to < 500 ns)
Effect of Temperature on Peak Circuit	±6% (0 ºC to 50 ºC) Effects should be RSSed before being added to the base error for overall measurement uncertainty

Reverse Power Measurement

Measurement Range	2 mW to 150 W (+3 dBm to +51.76 dBm)
Maximum Power	150 W average Maximum power depends upon the system SWR and frequency of operation
Measurement Uncertainty	±(Base Average Power Uncertainty) Expanded uncertainty with K=2 for CW signal with a matched load

Complementary Cumulative Distribution Function (CCDF)

Measurement Uncertainty	±0.2% ≥ 100 MHz: Pulse Power > +38 dBm, < 100 MHz: Pulse Power > +41 dBm, T > 50 μs (Full BW), T > 400 μs (200 kHz BW), T > 20 ms (4 kHz BW)
Threshold Range	2 mW to 300 mW (+3 dBm to +54.77 dBm) As printed in the datasheet
Accuracy of Threshold	≥ 100 MHz ±(Base Average Power Uncertainty +5% +1 W), < 100 MHz ±(Base Average Power Uncertainty at +5% +2W)

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)	±(Base Average Power Uncertainty except Zero Set, Zero Drift and Noise are divided by duty cycle (t/T) ±2%) ≥ 100 MHz: Average Power > +33 dBm, < 100 MHz: Average Power > +36 dBm, Pulse width > 10 μs (Full BW), > 40 μs (200 kHz BW), > 3 ms (4 kHz BW)

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

Measurement Resolution	0.01 dB Forward/reverse true-RMS average power, peak power, crest factor and burst average power; CCDF: 0.01%
Offset Range	100 dB CCDF: 100%
Averaging Range	1 to 512 All measurement types
Measurement Speed, Forward/Reverse True-RMS Average Power	1.7 /s Typical; rate at which the measurement is updated in a data log
Measurement Speed, Peak Power	2.5 /s Typical
Measurement Speed, Crest Factor	1.4 /s Typical
Measurement Speed, Burst Average Power	0.7 /s Typical
Measurement Speed, CCDF	1.6 /s Typical
Warm-Up Time	20 minutes Specifications apply after warm-up with the sensor in the on state
Recommended Calibration Cycle	2 years

General

USB	180 mA typical at 5 V
Size (H x W x D)	108 mm x 97 mm x 36 mm Excluding N connectors
Weight	535 g (1.18 lb)
Warranty	1 Year

Environmental

Operating Temperature	0 °C to 50 °C Tests performed per MIL-PRF-28800F (Class 2)
Storage Temperature	–51 °C to 71 °C
Maximum Relative Humidity	45% relative humidity at 55 ºC; 75% relative humidity at 40 ºC; 95% relative humidity at 30 ºC Non-condensing
Mechanical Shock	30 gn half-sine, 11 ms duration
Vibration	Sinusoidal: 5 to 55 Hz, 3 g max; Random: 10 Hz to 500 Hz, Power Spectral Density: 0.03 g²/Hz

Regulatory Compliance

European Union EMC	2014/30/EU, EN 61326-1:2013, CISPR 11/EN 55011, IEC/EN 61000-4-2/3/4/5/6/8/11
Low Voltage Directive	2014/35/EU
Safety	EN 61010-1:2010
RoHS Directive	2011/65/EU & 2015/863
United Kingdom	EMC SI 2016/1091; BS EN 55011 & BS 61000-4-2/3/4/5/6/8/11; Consumer Protection (Safety) SI 2016/1101; BS EN 61010-1:2010; Environmental Protection SI 2012/3032; 2011/65/EU & 2015/863
Australia and New Zealand	RCM AS/NZS 4417:2012
South Korea	R-R-A2J-1014
Canada	ICES-1(A)/NMB-1(A)

Specifications are taken from the manufacturer's documentation. See the datasheet for complete and current values.

Applications

Avionics systems such as ILS, localizers, glide paths, surveillance radars and markers
Civil and military aviation communication systems
Railroad braking system power monitoring
Broadcast networks and LMR systems
Transmitter power monitoring
Antenna reflection measurement
Testing high power devices such as power amplifiers
General purpose measurement of through and reflected power
LMR, Tetra and APCO/P25 radio signals

Included

2000-1606-R 1.8 m USB 2.0 A to Micro-B cable

Options & Accessories

Option	Description
MA24103A-0098	Option 98, Standard calibration to ISO17025 and ANSI/NCSL Z540
MA24103A-0099	Option 99, Premium calibration to ISO17025 and ANSI/NCSL Z540 — Test report and uncertainty data included.
510-90	Precision coaxial adapter, N(m) to 7/16 DIN(f), DC to 3.3 GHz
510-91	Precision coaxial adapter, N(f) to 7/16 DIN(f), DC to 3.3 GHz
510-92	Precision coaxial adapter, N(m) to 7/16 DIN(m), DC to 3.3 GHz
510-93	Precision coaxial adapter, N(f) to 7/16 DIN(m), DC to 3.3 GHz
34ANF50	Precision coaxial adapter, GPC-7 to N(f), DC to 18 GHz
34NFK50	Precision coaxial adapter, N(f) to K(m), DC to 18 GHz
34NFKF50	Precision coaxial adapter, N(f) to K(f), DC to 18 GHz
34NK50	Precision coaxial adapter, N(m) to K(m), DC to 18 GHz
34NFNF50	Precision coaxial adapter, N(m) to N(m), DC to 18 GHz
34NKF50	Precision coaxial adapter, N(m) to K(f), DC to 18 GHz
34AN50	Precision coaxial adapter, GPC-7 to N(m), DC to 18 GHz
34NN50A	Precision coaxial adapter, DC to 18 GHz, 50 Ω, N(m)-N(m)
1010-121-R	Attenuator, 40 dB, 100 W, D to 18 GHz, N(f) to N(m), Uni-directional
42N50-20	Attenuator, 20 dB, 5 W, DC to 18 GHz, N(m) to N(f)
3-1010-122	Attenuator, 20 dB, 5 W, DC to 12.4 GHz, N(m) to N(f)
42N50A-30	Attenuator, 30 dB, 50 W, DC to 18 GHz, N(m) to N(f)
3-1010-123	Attenuator, 30 dB, 50 W, DC to 8.5 GHz, N(m) to N(f)
1010-127-R	Attenuator, 30 dB, 150 W, DC to 3 GHz, N(m) to N(f)
3-1010-124	Attenuator, 40 dB, 100 W, DC to 8.5 GHz, N(f) to N(m), Uni-directional
1010-128-R	Attenuator, 40 dB, 150 W, DC to 3 GHz, N(m) to N(f)
01-200	Calibrated Torque End Wrench, GPC-7 and Type N
2000-1594-R	5 meters USB A to Mini-B cable
2000-1593-R	3 meters USB A to Mini-B cable
28N50-3	Precision termination, DC to 8.6 GHz, 50 Ω, N male
28NF50-2	Precision termination, DC to 18 GHz, 40 dB, 50 Ω, N female
28N50-2	Precision termination, DC to 18 GHz, 40 dB, 50 Ω, N male