The Advantest U3641 is a highly portable, lightweight 3 GHz spectrum analyzer optimized for field installation and maintenance of communication equipment. Featuring a three-way power supply system (AC, external DC, and optional battery pack), it is designed for maximum mobility. It incorporates a synthesized local oscillator for high-precision measurements, a 6-inch TFT color LCD display, a switchable preamplifier, and options for resolution bandwidths down to 100 Hz and an internal tracking generator.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | Two PCMCIA memory card slots (Type I/II), RS-232, GPIB (optional) |
| Display | 6-inch TFT color LCD |
Physical
| Parameter | Value |
|---|---|
| Power Supply | AC Line (100 to 240 VAC, 50/60 Hz), External DC (11 to 17 VDC), or Optional Battery Pack; Power consumption <= 60 VA (AC) / <= 45 W (DC) |
| Operating Temperature | 0 to 50 °C |
| Dimensions (W×H×D) | 291 mm × 148 mm × 330 mm |
Frequency
| Parameter | Value |
|---|---|
| Frequency Range | 9 kHz to 3 GHz |
| Frequency Span Range | 50 kHz to 3 GHz, and Zero Span |
| Frequency Reference Stability | ±2 ppm/year |
| Frequency Reference Temperature Stability | ±5 ppm (0 °C to 50 °C) |
| Residual FM | ≤ 20 Hz p-p / 100 ms (span zero) |
| Internal Reference Frequency | 10 MHz |
Bandwidth
| Parameter | Value |
|---|---|
| Resolution Bandwidth (RBW) Range | 1 kHz to 1 MHz (in 1-3 sequence); 100 Hz and 300 Hz (optional) |
| Video Bandwidth (VBW) Range | 10 Hz to 1 MHz (in 1-3 sequence) |
Sweep
| Parameter | Value |
|---|---|
| Sweep Time (Span > 0) | 50 ms to 1000 s |
| Sweep Time (Zero Span) | 50 µs to 1000 s |
| Sweep Trigger Modes | Free Run, Single, Video, External, TV-V |
Amplitude
| Parameter | Value |
|---|---|
| Measurement Range | Preamp OFF: -117 dBm to +30 dBm; Preamp ON: -135 dBm to +30 dBm |
| Maximum Safe Input Level | +30 dBm (with >= 10 dB attenuation) |
| Displayed Average Noise Level (Preamp OFF) | -117 dBm @ 1 GHz (1 kHz RBW) |
| Displayed Average Noise Level (Preamp ON) | -135 dBm @ 1 GHz (1 kHz RBW) |
| Input Attenuator Range | 0 to 50 dB in 10 dB steps |
| Third-Order Intermodulation | <= -75 dBc (10 MHz to 3 GHz, input -30 dBm, 100 kHz separation) |
Inputs & Outputs
| Parameter | Value |
|---|---|
| RF Input Impedance | 50 Ω |
| RF Input Connector | N-type (female) |
| Input VSWR | <= 1.5 (for frequency <= 2 GHz, attenuation >= 10 dB) |
| External Trigger Input | BNC female, TTL level |
| Gate Input | BNC female, TTL level |
| Reference I/O | BNC female, 10 MHz |
| Audio Output | Internal speaker and 3.5 mm monaural headphone jack |
| Maximum DC Input Voltage | 0 VDC |
Built-in Measurements
| Parameter | Value |
|---|---|
| Measurement Functions | Adjacent Channel Power (ACP), Occupied Bandwidth (OBW), Channel Power |
Physical & Environmental
| Parameter | Value |
|---|---|
| Storage Temperature Range | -20 °C to +60 °C |
| Operating Humidity Range | <= 85% RH (non-condensing) |
Tracking Generator Option
| Parameter | Value |
|---|---|
| Optional Tracking Generator Frequency Range | 100 kHz to 3 GHz |
| Optional Tracking Generator Output Level | 0 to -31 dBm in 1 dB steps |
| Optional Tracking Generator Output Flatness | ±1.5 dB (at 100 kHz to 3 GHz, reference to 100 MHz, output -10 dBm) |
Amplitude Accuracy
| Parameter | Value |
|---|---|
| Calibration Output | 20 MHz, -20 dBm ±0.3 dB |
| Frequency Response | ±0.5 dB (100 kHz to 2 GHz), ±1.0 dB (9 kHz to 3 GHz) |
| Resolution Bandwidth Switching Uncertainty | ±0.3 dB (after calibration, reference RBW 300 kHz) |
| Log Scale Fidelity | ±0.2 dB / 1 dB, ±1.0 dB / 10 dB, ±1.5 dB / 80 dB |
Storage & Connectivity
| Parameter | Value |
|---|---|
| PC Card Slot | Type I/II, 1 slot (PCMCIA Ver. 2.0 / JEIDA Ver. 4.1) |
Performance
| Parameter | Value |
|---|---|
| Detector Modes | Normal, Positive Peak, Negative Peak, Sample, QP (with option 04) |
Features
| Parameter | Value |
|---|---|
| AM/FM Demodulation | Standard (via built-in speaker and headphone jack) |
Technology
Superheterodyne Spectrum Analyzer
Applications
Field installation, maintenance, and compliance measurements for wireless communications
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