TEK R3131 Spectrum Analyzer 9 kHz to 3 GHz
Features
- Built-in High Accuracy OBW, ACP, and Power Measurement Functions
Which Can Be Applied to Digital Radio Measurement
- Improved Ease of Use Through Auto TUNE Function
- Total Level Accuracy Guaranteed by Auto CAL Function
- Standard Interfaces: GPIB, RS232, Centronics, and FD Drive
- Large Character Display Allows Results to Be Seen
- EMC Measurement Functions
- Improved System Operation Speed
- Operation Key Arrangement for Ease of Use
- Compact and Light Weight (12 kg) with a Space-saving Design
- Optional Tracking Generator for Scalar Transmission Measurements
Applications
- Digital Radio Transmitter Characteristics Measurement
An Affordable Personal Spectrum Analyzer with Performance to Match Many
Applications
The R3131 is an easy-to-use personal spectrum analyzer which
combines high accuracy necessary for digital radio measurement with excellent
operability and usability. The R3131 can be used in diverse fields, for
a multitude of applications.
Lots of Standard Features
The R3131 includes a number of standard features that normally
are available only as options. These include an IEEE 488 interface, RS-232
interface and parallel printer (Centronics) port. A 3.5 inch floppy disk
is also provided at no extra charge, as is an EMC Measurement function.
Measurement parameters and results can be recorded on a
3.5 inch floppy disk. Because the bitmap and text formats are compatible,
the recorded data can easily be transferred to a PC.
Independent Operation Keys Improve Operability AUTO TUNE
Searches for the signal with the maximum level within the
3 GHz band and sets the center frequency automatically. Then, reproduces
the setting which existed immediately before execution of AUTO TUNE, allowing
observation under the same measurement conditions.
POWER MEASURE
The R3131 can measure the power within the specified band
of frequency diffuse signals and the total power of multi-carrier signals.
It can also be used to measure the occupied frequency bandwidth (OBW)
and adjacent channel leakage power (ACP) which are essential to transmission
characteristics testing for radio equipment.
Channel Power
The R3131 allows you to measure the total power within the
window and display it as the channel power simply by setting the
measurement window to the specified occupied bandwidth.
Total Power
Obtains the total power from the spectrum displayed on the
screen. This function is useful for total power measurement of multi-carrier
signals.
OBW
Measures the frequency band which contains 99% of the total
power of the spectrum displayed on the screen. In addition, the % value
of OBW can be set to any desired value.
ACP
The measurement results can be displayed in graphical form,
including the upper and lower point data offset from the carrier and the
leakage power values at all the displayed frequency points.
GATED SWEEP
Bursted signals are difficult to capture with some
spectrum analyzers. The R3131 allows spectrum analysis of the burst
signal by supplying a trigger signal synchronizing with the burst transmission.
PASS/FAIL
Sets the limited judgment value for the level axis using
a window. If the marker falls within the window, the PASS judgment results;
otherwise, the FAIL judgment results. Since the limit value is set
as an absolute value, you can make measurement with the same judgment
value with different REF levels. In addition, by setting the limit window
for the frequency axis, the portion where the X and Y axes overlap is
judged as the PASS region
Diverse Measurement Functions
The MEAS key incorporates the XdB Down measurement function
which is useful for noise measurement, AM modulation measurement, 2-signal
3rd-order distortion measurement, and filter cut-off frequency measurement.
In noise measurement, bandwidth conversion can easily be made and the
PBW calibration function for improvement of measurement accuracy is effective.
The PBW calibration function is a new calibration function which performs
correction, in power measurement, based on conversion of the R3131 resolution
bandwidth filter to an ideal filter, thereby allowing measurement with
higher accuracy.
EMC
This function measures electromagnetic interference generated
by various electronic equipment. This function incorporates the 9 kHz
and 120 kHz RBW and QP detector conforming to the CISPR Pub.16-1 standard.
In addition, using the AM/FM demodulation signal fed from the PHONE jack
on the rear panel, you can identify broadcasting radio waves which act
as external noise. Prior to measurement of noise emission on the
approved site, this function is very useful for preparatory evaluation
and solution.
Antenna and Level Correction Functions (Correction Table Editing via PC
Interface)
Various antenna correction factors provided by Advantest
are built-in the R3131. Simply by selecting the Model name of the antenna,
the level indication of the R3131 is calibrated to an absolute value,
allowing you to read the value directly in unit of dBµ/m. When you
use an antenna from other manufacturers, you can reflect its antenna correction
factor in the level indication of the R3131 by performing steps 1 and
2 below.
1. Set Antenna Correction to ON and SAVE the file.
2. OPEN the file from the floppy disk using Excel on the
PC.
3. Enter the frequency and correction level in the [ANT
CORR] area and then overwrite it on the floppy disk.
4. Load the floppy disk in the R3131 and then RECALL the
file. The Correction table is created..
the screen data.
Improved System Throughput
The throughput of production and adjustment lines is largely
affected by the measurement time of measuring instruments and data transmission
time. With newly developed internal processing technology, the R3131 has
shortened the time necessary for GPIB control and data transmission by
half or more in comparison with former products. In addition, by reducing
the settling time of the local oscillator, the waveform update rate in
unit time has been doubled.
(In either case, comparison is made under the same conditions.)
Applicable Printers
CANON -
BJC-35V
BJC-410J
BJC-420J
BJC-600J
(Other ESC/P applicable model)
HP -
Desk Jet 505J
Laser Jet 5L
Laser Jet 4PJ
(Other PCL applicable model)
EPSON -
MJ-500
MJ-930C
MJ-5000C
MJ-700V2C
PM-700C
PM-750C
PM-2000C
(Other ESC/P, ESC/P raster applicable model)
Specifications
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Output Voltage:
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Two Variable:
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0 to 30 VDC
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One Fixed:
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5.0 V
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Output Current:
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Two Variable:
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0 to 2.0 A (CC)*1
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One Fixed (foldback limited):
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3.0 A max
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Line Regulation:
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Two Variable:
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0.01% + 3 mV (CV); 0.2% + 3 mA (CC)
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One Fixed:
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<5 mV (CV)
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Load Regulation:
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Two Variable:
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<0.01% + 5 mV, current > 3 A (CV);
<300 mV 0 to 60 V single series tracking supply
(CV), 0.2% + 3 mA (CC)
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One Fixed:
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<10 mV (CV)
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Ripple/Noise:
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Two Variable:
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<1 mV RMS, 5 Hz to 1 MHz
(CV); <3 mA (CC)
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One Fixed:
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<2 mV RMS
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Output in Independent Mode:
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Two variable:
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0 to 30 V (CV); 2.0 A (CC)
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Output in Parallel Mode:
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One 0 to 30 V, 4.0 A max
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Tracking Error:
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<0.5% + 10 mV
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Series Mode:
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One 0 ±30 V, 2.0 A max or one 60 V,
2 A
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Tracking Error:
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±0.5% +10 mV
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Displays:
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Two 3-1/2 digit LED (switchable)
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Voltage Indicators:
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0 to 30 VDC ±(0.5% of rdg + 2 digits)
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Current Indicator:
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0 to 2 A DC ±(0.5% of rdg + 2 digits)
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Overload Indicator:
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Yes
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Insulation:
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Chassis to Terminal:
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>20 megaohm at 500 VDC
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Chassis to Power Cord:
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>30 megaohm at 500 VDC
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Safety :
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UL3111-1, CSA1010.1, EN61010-1, Denturi Mark
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MetricTest
Solutions
