Advantest U3661 Spectrum Analyzer

Characteristics

Frequency

Frequency Range: 9 kHz to 26.5 GHz.

Preamplifier: 9 kHz to 3.2 GHz (Band 0).
Frequency read accuracy (start, stop, center frequency, marker frequency): ± (frequency reading x frequency reference accuracy + 5% x Span + 15% x RBW + 60 Hz x N).

Marker Frequency Counter -
Resolution: 1 Hz to 1 kHz.
Accuracy: ± (Marker frequency x Frequency reference accuracy + 1 LSD ± 5 Hz x N)
(S/N >25 dB, 1 kHz <span <200 MHz, RBW >3 kHz)

Frequency Reference Accuracy -
Aging Rate: ±2x10^-6/year.
Temperature Stability: ±1x10^-5 (0°C to 50°C).

Frequency Span -
Range: 1 kHz to 26.7 GHz, 0 Hz (zero span)
Accuracy: 5% of span or less
Residual FM (zero span): <60 Hz _p-p x N/100 ms.

Frequency Drift (at a fixed temperature, 30 minutes after power-on) -
Span: <10 kHz: < 150 Hz x N x (Sweep time/min).

Side-band Noise -
20 kHz Offset: Frequency <7.1 GHz (Band 0, Band 1); <-105 dBc.
Frequency: >6.7 GHz; < (-105+20 logN) dBc.
10 kHz Offset: Frequency <7.1 GHz (Band 0, Band 1); <-100 dBc.
Frequency: >6.7 GHz; <(-100+20 logN) dBc.

Resolution Bandwidth (3 dB) -
Range: 1 kHz to 3 MHz, 1 to 3 sequences.

Accuracy: < ±20% (1 kHz to 1 MHz) (100 Hz, 300 Hz Opt. 26).

Selectivity: < 15: 1 (60 dB : 3 dB).
Video Bandwidth: 10 Hz to 3 MHz, 1 to 3 sequences.

Amplitude Range

Measurement Range - +30 dBm to (Average display noise level)

Maximum Input Level (Input attenuator > 10 dB) -
Preamplifier OFF: +30 dBm, 0 VDCmax.
Preamplifier ON: +13 dBm, 0 VDCmax.

Display Range -

Log: 10 x 10 div 10, 5, 2, 1 dB/div.
Linear: 10%/div of reference level (RBW >3 kHz).

Reference Level Range -

Preamplifier OFF: (Input attenuator 0 to 50 dB).
Log: -64 dBm to +40 dBm (0.1 dB steps).
Linear: 141.1 µV to 22.36 V.
Preamplifier ON: (Input attenuator 0 to 10 dB).
Log: -89 dBm to -25 dBm (0.1 dB steps).
Linear: 7.934 µV to 12.57 mV.
Input Attenuator Range: 0 dB to 50 dB (10 dB steps).

Dynamic range

Average Display Noise Level - RBW 1 kHz, VBW 10 Hz, input attenuator 0 dB, frequency > 1 MHz.

Preamplifier OFF -

Preamplifier ON - -132 dBm + 3 f[GHz] dBm (1 MHz to 3.2 GHz (Band 0)).

1 dB gain compression - Input attenuator 0 dB, frequency 10 MHz or more.
Preamplifier OFF: >-10 dBm (mixer input level).
Preamplifier ON: >-30 dBm (preamplifier input level).

Spurious Response - Preamplifier OFF, input attenuator 0 dB.

2nd Order Harmonic Distortion -

3rd order distortion: <-70 dBc (Mixer input level -30 dBm, 2-signal difference >10 kHz).
Image/multiple/out-band response: < -50 dBc.

Residual Response - Input 50 Ohm termination, input attenuator 0 dB.
Preamplifier OFF: <-100 dBm (1 MHz < Frequency <3.2 GHz).

Preamplifier ON: <-105 dBm (1 MHz < Frequency <3.2 GHz).

Amplitude Accuracy

Frequency response: automatic calibration, after pre-selector peak execution.
Preamplifier OFF: 100 kHz to 2.7 GHz; <±1 dB.

Preamplifier ON: 100 kHz to 2.7 GHz; <±1 dB.

Calibration Signal Level Accuracy (30 MHz) - -20 dBm ± 0.3 dB.

IF Gain Error - < ± 0.5 dB (After automatic calibration).

Scale Display Accuracy - After automatic calibration.
Log: <±1.5 dB/90 dB.

Linear: ±5% of reference level (RBW > 3 kHz).

Input Attenuator Switching Accuracy - Referenced to 10 dB, 0 dB to 50 dB.
9 kHz to 12 GHz; <±1.1 dB.
12 GHz to 20 GHz; <±1.3 dB.
20 GHz to 26.5 GHz; <±1.8 dB.

Resolution Bandwidth Switching Error - After automatic calibration.
< ±1.0 dB (RBW referenced to 3 MHz).

Sweep

Sweep Time: 50 ms to 1000 s.

Accuracy: < ±5%.
Trigger Mode: FREE RUN, SINGLE, VIDEO, EXT, TV.

Demodulation

Audio Demodulation -
Modulation Type: AM, FM (FM operates at RBW > 3 kHz).
Audio Output: Speaker and earphone jacks (with volume control).

Input/Output

RF Input -
Connector: Type N, female (or Type SMA).
Impedance: 50 Ohm (nominal).
VSWR Preamplifier OFF: Input attenuator 10 dB to 50 dB.
< 1.5:1 (100 kHz to 3 GHz).
< 2:1 (3 GHz to 26.5 GHz).
VSWR Preamplifier ON (Band 0): < 2.5:1 (9 kHz to 3.2 GHz).

10 MHz Frequency Reference Input -
Connector: BNC female, rear panel.
Impedance: 75 Ohm (nominal).
Input Range: 0 dBm to +16 dBm.

Video Output -
Connector: BNC female, rear panel.
Impedance: 75 Ohm (nominal), AC-coupled.
Amplitude: Approx. 1 V_p-p, 75 Ohm termination (composite video signal).

External Trigger Input -
Connector: BNC female, rear panel.
Impedance: 10 kilohm (nominal), DC-coupled.
Trigger level: TTL level.

Gated Input -
Connector: BNC female, rear panel.
Impedance: 10 kilohm (nominal).
Sweep Stop: During LOW at TTL level.
Sweep: During HIGH at TTL level.

Audio Output -
Connector: Compact monophonic jack, top panel.
Power Output: 0.2 W, 8 Ohm (nominal).

GPIB Interface -
Plotter:

Printer: HP2225A.
RS-232: D-SUB 9-Pin, rear panel.

Power Input When Battery Mounter is Applied - AC input: AC/DC adapter A08364 (automatic 100 V/200 VAC switching) (Advantest).
Battery: Pro Pac 14 battery (nominal 60 Wh) (Anton Bauer).

TV Video Demodulation Output - Opt. 72
Connector: BNC female, rear panel.
Impedance: 75 Ohm (nominal), DC-coupled.
Amplitude: Approx. 1 V_p-p, 75 Ohm termination.

TV Audio Demodulation Output - Opt. 72
Connector: Pin female, rear panel.
Impedance: 1 kilohm (nominal), AC-coupled.

TV Video Signal Input - Opt. 72
Connector: BNC female, rear panel.
Impedance: 75 Ohm (nominal), AC-coupled.
Input Level: Approx. 1 V_p-p.

TV Audio Signal Input - Opt. 72
Connector: BNC female, rear panel.
Impedance: 1 kilohm (nominal), AC-coupled.

General Specifications

Temperature -
Operating Temperature: 0°C to 50°C.
Relative Humidity: 85% or less.
Storage Temperature: -20°C to 60°C.

Power Requirements -
External DC Input: 70 W maximum.

With AC Adapter: Automatic 100 V/200 VAC switching.
100 VAC Operation:

220 VAC Operation:

Power Consumption -
External DC Input: 70 W maximum.
With AC Adapter: 120 VA maximum.

Safety - UL3111-1, CSA1010.1, EN61010-1, IEC61010-1.

Weight -
Main Unit: 8.5 kg or less (accessories, carrying strap, and battery not included).
AC/DC Adapter (A08364): 1.1 kg.
Pro Pac 14 Battery: 2.3 kg.

Dimensions -
Approx. 148 mm (H) x Approx. 291 mm (W) x 330 mm (D)
(Stand, connectors and other protrusions not included).

External Memory -
Memory Card Drive: 2-Slots, top panel.
Connector: JEIDA Ver. 4.1, PCMCIA Rel. 2.0.

Accessories

• AC/DC adapter: A08364
• Power cable: A01402
• Power fuse: 326010
• N-BNC conversion adapter: JUG-201A/U
• N-SMA conversion adapter: FLA-H-SA7
• Carrying strap
• Instruction manual