Advantest R3261C

Spectrum Analyzer, 9kHz-2.6GHz

Features

R3261C, R3261CN, R3261D, R3361C, R3361CN, R3361D

R3261/R3361 Series Spectrum Analyzers

The R3261/R3361 Series spectrum analyzers use a synthesized technique to cover wide frequency bands: 9 kHz to 2.6 GHz (R3261C, R3361C) or 9 kHz to 3.6 GHz (R3261D, R3361D). These compact analyzers also offer high-performance functions, such as the 1 Hz resolution frequency setting function and 1 Hz resolution frequency counter function.

The R3261/R3361 Series spectrum analyzers are easy to operate because they incorporate unique features such as user-defined and measuring window functions. Weighing only 15 kg (33 lbs.) the analyzers are small and useful for measurement and analysis of all kinds, from manufacturing to research and development.

The analyzers have an internal controller function (Option 15), parallel I/0, and GPIB interface for line connection and automatic measurement, so the user can create the optimum system configuration.

Choose From Six Models, Depending Upon Your Application

The R3261/R3361 Series consists of six models. All models feature high performance and a set of features and functions for various applications.

1 Hz Resolution Synthesizer

The R3261/R3361 Series portable spectrum analyzers are based upon a synthesized system, so the center and start/stop frequencies can be set with a resolution of 1 Hz. The synthesizer, featuring 1 Hz resolution, is a powerful tool ideal for waiting, receiving, or spot measurement in the zero-span mode.

1 Hz Resolution Frequency Counter

The frequency counter built into the R3261/R3361 Series features 1 Hz resolution. One of the advantages of these analyzers is that they can measure the modulated frequency or spurious frequency of a radio system that cannot be measured with an ordinary frequency counter simply by setting a marker. In addition, the ability to measure weaker signals than a frequency counter can extend the application range from broadband panoramic measurement to weak signal measurement.

Manual Sweep Function for Spot Measurement

EMC measurements using the quasi-peak (QP) detector require an extended sweep time. However, the time required to measure the peak value can be shortened using the manual sweep function.

Create Your Own Unique Menu

The R3261/R3361 Series spectrum analyzers are very functional and very easy to use because of the user-defined functions:

Fast Measurement with Measuring Window Function

The R3261/R3361 Series allows the user to define both frequency and level ranges within a span for analysis. This powerful tool enables faster measurement times over frequencies and levels of interest.

Option 1K includes a suite of CDMA test routines which can be accessed through softkey menus. Specific CDMA measurements include channel power, total power across the span, average power, and peak power. The softkey menu for a test along with measured data (waveforms) can be stored in memory cards via the front panel.

1 kHz to 2.6 GHz and zero. R3261D/R3361D, 1 kHz to 3.6 GHz and zero.
Log mode: 1, 2, or 3 decades selected between 10 kHz and 1000 MHz.

Frequency Span Accuracy -
Span <2 MHz: </=±3% of span.
Span >2 MHz: </=±5% of span.

Frequency Stability - Residual FM:
10 MHz </= span < 2 MHz, 50 kHz p-p or less.
Span >2 MHz, 2 kHz p-p or less.
Span </=2 MHz, 20 Hz p-p or less.
Frequency drift: Span </=2 MHz, 300 Hz/min. or less.

Sideband Noise - At 20 kHz offset
f </= 3.0 GHz, -105 dBc/Hz;
f </= 3.6 GHz, -101 dBc/Hz.

Resolution -
3 dB bandwidth: 30 Hz to 1 MHz; switchable in 1 to 3 steps.
6 dB bandwidth: 200 Hz, 9 kHz, 120 kHz. Selectivity: </=15:1 (60 dB: 3 dB).
Bandwidth accuracy: </=20%.

Marker Accuracy -
Normal mode: Central frequency display accuracy + span accuracy.
Counter mode: Display frequency x reference oscillator accuracy ±1 count.

Amplitude Related

Amplitude Measuring Range -
R3261C, R3261D, R3361C, R3361D: -130 dBm to +25 dBm.
R3261CN, R3361CN: -19 dBµV to +132 dBµV.

Screen Display Range -
Log mode: 10 dB/div, 120 dB. 10 dB/div, 80 dB. 5 dB/div, 50 dB. 2 dB/div, 20 dB. 1 dB/div: 10 dB.
Linear mode: 10 div.
QP mode: 80 dB (10 dB/div) when measuring range is 70 dB.

Display Linearity -
Log mode: ±2.0 dB/110 dB, ±1.5 dB/70 dB, ±1.0 dB/10 dB, ±0.2 dB/1 dB.
Linear mode: ±5% of full scale.
QP mode: ±2.0 dB/70 dB, ±1.0 dB/40 dB.

Reference Level Display Range -
R3261C, R3261D, R3361C, R3361D:
-109.9 dBm to +40.0 dBm, 0.715 µV to 22.4 V. R3261CN, R3361CN: +0.1 dBµV to
+150 dBµV, 1.01 µV to 31.6 V.

Reference Level Accuracy (after Automatic Calibration) -

Dynamic Range

Average Noise Level - (resolution bandwidth - 300 Hz, Video bandwidth 1 Hz, Input attenuator 0 dB, Frequency range 10 MHz or more):
R3261C, R3261D, R3361C, R3361D:
-120 dBm + 1.55 f (GHz) dB. R3261CN, R3361CN: -10 dBµV +1.55 f (GHz) dB.

Secondary and Tertiary Distortion -
</=-70 dB at -30 dBm input, Input attenuator 0 dB, Frequency 10 MHz or more.

Frequency Response -

Residual Response -
R3261C, R3261D, R3361C, R3361D:
</=-100 dB (Termination: 50 Ohm). R3261CN, R3361CN: </=-11 dBµV (Termination 75 Ohm).
Resolution Bandwidth Switching Accuracy - </=±0.3 dB after automatic calibration.
Video Filter - 1 Hz to 1 MHz; switchable in 1 or 10 steps.

Sweep Related

Sweep Time - 50 ms to 1000 s and manual sweep.

Sweep Time Accuracy - </=3%.

Trigger Modes - FREE RUN, LINE, VIDEO, EXT, TV-V, and SINGLE.

Tracking Generator Specifications (R3361C, R3361CN, R3361D)

Frequency Range - R3361C/R3361CN: 9 kHz to 2.6 GHz. R3361D: 9 kHz to 3.6 GHz.

Output Level Range - R3361C, R3361D: 0 dBm to -50 dBm. R3361CN: +105 dBµV to 55 dBµV setting in 1 dB steps.

Output Level Accuracy - </=±0.5 dB (30 MHz, -10 dBm, 20°C to 3O°C).

Output Level Switching Accuracy (at 0 dBm/+95 dBµV output) -
100 kHz to 1.0 GHz: </=±1.0 dB.
9 kHz to 2.6 GHz: </=±2.0 dB.
9 kHz to 3.6 GHz: </=±3.0 dB.

Output Spurious (at 0 dBm/+105 dBµV output) -
Harmonic spurious: </=-20 dB.
Non-harmonic spurious: </=30 dB.

Tracking Generator Leakage - R3361C/R3361D: Frequency </=3.0 GHz,
</=-110 dBm. Frequency </=3.6 GHz,
</=-100 dBm.
R3361CN: </=+1 dBµV.

Output Impedance -
R3361C, R3361D: Approximately 50 Ohm.
R3361CN: Approximately 75 Ohm.

Output VSWR (at </=-10 dBm/+95 dBµV output) - 100 Hz to 2 GHz: </=1.5. 9 kHz to 3.6 GHz: </=2.0.

Output Connector - N type.

Input Related

Input Impedance -
R3261C, R3261D, R3361C, R3361D: 50 Ohm.
R3261CN, R3361CN: 75 Ohm.

VSWR (at input attenuator >/=10 dB) -
100 kHz to 2 GHz: </=1.5.
9 kHz to 3.6 GHz: </=2.0.

Input Connector - N type.

Maximum Input Level -
R3261C, R3261D, R3361C, R3361D:
+25 dBm (attenuator >/=30 dB), 50 V DC max. R3261CN, R3361CN: +132 dBuV (attenuator >/=30 dB), ±50 V DC max.

Input Attenuator - 0 to 50 dB in
10 dB steps.

Input Attenuator Switching Accuracy - </=1.0 dB (</=2.0 GHz), </=1.5 dB (</=3.6 GHz) at input attenuator 10 dB.

Detection Modes - NORMAL, POSI, NEGA, and SAMPLE.

Inputs/Outputs

External Memory Function - IC memory card.

GPIB Data Output/Remote Control - Data output and remote control through internal GPIB interface.

Direct Plotting - Hardcopy output of all display data to HPGL plotters through internal GPIB interface.

Voice Monitor Output - AM and FM with approximately 8 Ohm earphone.

Probe Power Source: - ±15 V, 4-Pin connector.

Environmental

Ambient Temperature - 0°C to +50°C. Relative Humidity: 85% or less.

Storage Temperature - -20°C to +60°C.

Safety - This product has been safety tested by Advantest to IEC 348 specifications.

Power Requirements

Operating Voltage -
Standard: 90 to 132 V.
Option 40: 198 to 250 V.

Power Consumption - Less than 220 VA.

Frequency - 48 to 66 Hz.

CRT - 5.5 in.

Physical Characteristics

K475