Product Name: spectrum analyzer U3751

Manufacturer: Advantest

Product model: U3751

Characteristic：

The frequency range: 9kHz ~ 8GHz

The maximum input level: 30dBm

The RBW:300Hz ~ 3MHz

It has the advantages of small size, light weight (5.6 kg), fast measurement

The outdoor measurement: W-CDMA, PHS, GSM, WLAN...

We provide a large number of standard test functions

The good price, an upgraded version of R3162

The standard interface: GPIB, USB (printing and storage), VGA, LAN

Function introduction:

frequency

Frequency range 9kHz ~ 8GHz

Band bandwidth

9kHz ~ 3.1GHz 0

3.0GHz ~ 8GHz 1

Preamplifier 10MHz ~ 8GHz

Frequency meter

Resolution 1Hz ~ 1kHz

(RBW<100kHz, input signal level >-50dBm, CW and signal single)

Frequency reference precision

Stability 2 * 10-6/ years

2.5 * 10-6 (0 degrees C to 50 C)

bandwidth

Range 10kHz ~ 8GHz, 0Hz (Ling Pinkuan)

Precision < 1%

Residual FM (Ling Pinkuan) <60Hzp-p/100ms (frequency reference internal)

The spectral purity of -85dBc/Hz (10kHz offset), bandwidth <200kHz

Resolution bandwidth

Range 300Hz ~ 3MHz (1-3 step)

RBW accuracy 12%

Video bandwidth 10Hz ~ 3MHz (1-3 step)

amplitude

Measurement range noise level to 30dBm

Maximum input level

(input attenuation over 10dB) preamplifier OFF: 30dBm

Preamplifier ON: 13dBm

15VDCmax

Input attenuation range of 0 to 50dB (10dB step)

Display gear 100, 50, 20, 10, 5dB, Linear

DBm, dBmV, dB V, dB Vemf, dBpW, W, V

Reference level range -140 ~ 40dBm

Detector Normal, Posi-peak, Nega-peak, Sample, RMS

Calibration signal

Frequency 20MHz

Level -20dBm

Precision 0.3dB

Scale display accuracy

Logarithm 0.5 /10dB dB

0.5 /80dB dB

0.2 /1dB dB

Level measurement accuracy correction, pre amplifier OFF

Temperature range: 20 to 30

Input attenuation: REF:0dBm; 10dB

Input signal level: -10dBm ~ -50dBm

1.5 dB (9kHz ~ 10MHz)

0.8 dB (10MHz ~ 3.1GHz)

1 dB (3.1GHz ~ 8GHz)

scanning

Scanning time of 20ms ~ 1000s (spectrum mode), 50 s ~ 1000s (Ling Pinkuan)

Scanning precision < 2% (Ling Pinkuan)

Trigger mode FREE, VIDEO, EXT, IF

Scan mode single, repeated

dynamic range

Average noise level frequency: 8GHz ~ REF, 10MHz level: <-45dBm, RBW:300Hz

Pre amplifier OFF bandwidth 0:-118dBm 2f (GHz) dB

Bandwidth 1:-117dBm 1f (GHz) dB

Pre amplifier ON bandwidth 0:-133dBm 3f (GHz) dB

Bandwidth 1:-134dBm 1.3f (GHz) dB

1dB gain compression frequency: 10MHz ~ 8GHz

Pre amplifier >-8dBm OFF

Pre amplifier >-25dBm ON

2 harmonic pre amplifier OFF frequency range mixing input

F>200MHz -40dBm <-70dBc

Typ f>300MHz -30dBm <-75dBc

2 signal 3 order -50dBc (frequency: 10MHz ~ 8GHz, pre amplifier OFF, mixer input -20dBm,

Out of tune: 200kHz)

Image / multiplex / out of band response <-60dBc (image suppression ON)

Residual response <-80dBm (10MHz ~ 8GHz, preamplifier OFF)

Input / output

RF input

Conversion head female type N

Impedance 50 (nominal)

<1.7:1 VSWR (<3.0GHz), input attenuation: >10dB

<2.0:1 (>3.0GHz), input attenuation: >10dB)

Corrected output signal BNC, 50 (nominal)

20MHz, -20dBm

Reference input BNC, 50 (nominal)

Input frequency (MHz) 1, 1.544, 2.048, 5, 10,, 13.824, 14.4, 15.36, 15.4, 16.8, 19.2, 19.44, 19.68, 19.8, 20,, 26,,,,,, 13,,,,,,,,,,, 19.6608, 12.8

Input level 0dBm ~ 16dBm

External trigger input 10K, BNC (nominal), DC coupling, trigger level: 0 ~ 5V

IF 21.4MHz output 50K, BNC (nominal), mixed input level of about: 10dB (20MHz)

Battery cell

Interface QR mount Antonbauer

External DC input

Interface XLR-4

Voltage range 11V ~ 17V

IEEE-488 BUS style GPIB conversion

USB1.1 USB

Video output D-sub15 pin female

LAN interface type 10/100, base-T RJ45

General standard

Ambient conditions 0 degrees C ~ 50 C, humidity below 85% (no frost time)

Storage temperature -20 C ~ 60

AC power input 200V, AC100V automatic conversion

100VAC ~ 100V, 50Hz/60Hz, 120V

200VAC ~ 200V, 50Hz/60Hz, 240V

DC power input 11V ~ 17V

Power consumption 100VA the following (AC), 70W (DC)

Dimensions 308mm (W) * 175mm (H) * 209mm (D) (feet, fittings, etc.)

337mm (W) * 190mm (H) * 307mm (D) (including feet, joints, etc.)