Spectrum Analyzers
U3741/3751
Compact Design with High Performance
Pioneering 3 GHz/8 GHz Spectrum Analyzers are Now Available!
The U3741/3751 portable spectrum analyzer supports a great range of applications, from use on production lines to system installation and maintenance. Its digital IF enables dramatic improvements in power measurement accuracy for digitally modulated signals. Moreover, the U3741/3751 provides twice the throughput of its predecessor. A light and compact 3 GHz/8 GHz spectrum analyzer, the U3741/3751 provides basic performance reliably and at a low cost.
●Better measuring speed due to high-speed processing (twice as fast as its predecessor)
●Dramatically improved power measurement accuracy for digitally modulated signals
●Built-in 3 GHz/8 GHz pre-amp standard
●Average display noise level:
-155 dBm/Hz@1 GHz, pre-amp ON
●Tracking generator covering a frequency range of 100 kHz to 3 GHz
●Option available for measurement of phase noise characteristics
●Lightweight and compact design, with a maximum weight of only 5.6 kg
●Continuous operation of up to 2.5 hours with the battery pack
U3741/ 3751 Web Demonstration
Please access to the http://www.advantest.co.jp/en-index.shtml and click on the following links.
PRODUCTS & SUPPORT |
Electronic Measuring Instruments |
Products |
U3751 |
2 U3741/3751-1E Mar. ’07
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6.5-inch color liquid |
Soft-key block |
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Extension-key block |
Exclusive function keys |
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crystal display (LCD) |
Front Panel
POWER
PHONE
Earphone jack for demodulated AM/FM audio
Option Guide
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CAL OUT |
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Control keys |
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USB |
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TG OUT |
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Output file data to USB |
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Tracking generator |
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memory or a USB printer |
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Image files: PNG, BMP |
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Setting files: BIN, XML |
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Rear Panel
Data Entry
Main function keys
RF INPUT
Battery mount
Mount for the battery pack (battery sold separately)
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EXT TRIG |
USB |
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DC INPUT
Operation with an external DC power supply
+11 VDC to +17 VDC
GPIB
IF OUT
21.4-MHz IF signal output
VIDEO
Output to an external VGA monitor
EXT REF |
LAN |
Standard signal input |
Control and remote operation, |
for external reference |
utilizing an external PC |
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Main unit support |
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Product name |
Model number |
Overview |
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U3741 |
U3751 |
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(9 kHz to 3 GHz) |
(9 kHz to 8 GHz) |
75 Ω Input Impedance |
OPT.15 |
Used for measurement of CATV and TV signals |
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High-Stability Frequency |
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OPT.20 |
High-stability reference oscillator with an aging |
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Reference Source |
rate of ± 2 x 10-8/day, ± 1 x 10-7/year |
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EMC Filter |
OPT.28 |
CISPR bandwidths are available for EMI |
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measurement. |
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RBW (6 dB down): 200 Hz, 9 kHz, 120 kHz, 1 MHz |
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High-Purity |
OPT.70 |
High-purity spectrum analysis with -100 dBc/Hz |
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@ 10 kHz offset |
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Spectrum Analysis |
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RBW 30 Hz has also been added. |
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75 Ω Tracking Generator |
OPT.75 |
Used for evaluation of frequency characteristics |
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in a range from 100 kHz to 2.2 GHz. |
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Output power range: 107 to 47 dB V |
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50 Ω Tracking Generator |
OPT.76 |
Used for evaluation of frequency characteristics |
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in a range from 100 kHz to 3 GHz. |
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Output power range: 0 to -60 dBm |
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1) OPT.15 and OPT.75 cannot be installed simultaneously. 2) OPT.15 is required, and cannot be installed simultaneously with OPT.76.
U3741/3751-1E Mar. ’07 3
Compact Design with High Performance
5-minute warm-up time
With the U3741/3751, warm-up time has been reduced to a scant 5 minutes (at an ambient temperature of 20 to 30°C). This shortened period virtually eliminates pre-warming time as a consideration, and permits quick and accurate measurement.
measurementStable |
5 |
U3741/3751 |
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min. |
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Our conventional model |
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Time
Improvements in overall accuracy
Digitized IF sections and innovative circuit technology dramatically improve absolute power measurement accuracy.
±0.8 dB (10 MHz to 3 GHz: U3741/3751) ±1.0 dB (3 to 8 GHz: U3751)
ADC |
Digital RBW Digital Det |
RF Input |
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Digital IF Block |
High throughput
This spectrum analyzer delivers data transfer speed superior to that of its predecessor. While the previous model delivered 875 ms, the U3741/3751 boasts a speed of 350 ms: double the system throughput *2 (using the GPIB interface)*3. This faster speed contributes to a significant reductions to cost of test on production lines and in similar applications. 
U3741/3751
Our conventional model
Measuring time
Standard USB (1.1) interface
Screenshots in BMP or PNG format can easily be sent via USB external memory. Users can easily store data, and easily paste measurement data into reports.
Up to 2.5 hours *1 of nonstop battery-driven operation
The spectrum analyzer uses one of three power systems: AC (100 V/200 V), DC (+11 V to +17 V), or the battery pack. This flexibility enables measurement in a variety of applications, whether in the factory or in the field.
Compact design
At about half the size of its predecessor, this spectrum analyzer offers a compact design while maintaining the same level of functionality. Its form factor gives it portability, enabling it to be used anywhere.
*1: Typical value at room temperature, without options *2: Twice that of its predecessor
*3: Sample case where the frequency and span are specified, and the channel power measurement result is transferred
Extensive array of measurement functions
Measurement functions include Channel Power, Total Power, Avg Power, OBW, ACP, Spurious measurement, Harmonics measurement, IM measurement, Noise/Hz calculation functions, multi-marker (10 markers), delta marker, peak marker functions, a channel setting function, and a 3-trace simultaneous sampling function.
4 U3741/3751-1E Mar. ’07
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