The Anritsu S331L Site Master is an all-in-one handheld cable and antenna analyzer designed for field technicians, installers, and wireless service providers. Operating from 2 MHz to 4.0 GHz, the S331L features a built-in InstaCal™ calibration module, an internal power meter, and a ruggedized design optimized for harsh outdoor environments.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | 2x USB 2.0 Type A, 1x USB 2.0 Mini-B |
| Display | 7-inch TFT color touchscreen, 800 x 480 resolution |
| User Interface Languages | English, French, German, Spanish, Chinese, Japanese, Korean, Italian, Russian |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 100-240 VAC, 50-60 Hz (AC/DC Adapter), 12 VDC, 3 A max input |
| Operating Temperature | -10 to 55 °C |
| Dimensions (W×H×D) | 250 mm × 177 mm × 61 mm |
| Weight | < 2.0 kg (4.4 lb) |
Frequency and Sweep Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 2 MHz to 4.0 GHz |
| Frequency Accuracy | ±2.5 ppm @ 25 °C |
| Frequency Resolution | 1 kHz |
| Number of Sweep Points | 137, 275, 551, 1102, 2204 |
| Sweep Speed | 1.5 ms per data point (typical) |
Cable and Antenna Analyzer Measurements
| Parameter | Value |
|---|---|
| Measurement Modes | Return Loss, VSWR, Cable Loss, Distance-to-Fault (DTF) Return Loss, Distance-to-Fault (DTF) VSWR, 1-Port Phase, Smith Chart (50/75 Ω) |
| Return Loss Measurement Range | 0 to 60 dB |
| Return Loss Resolution | 0.01 dB |
| VSWR Measurement Range | 1 to 65 |
| Cable Loss Measurement Range | 0 to 30 dB |
| Distance-to-Fault (DTF) Maximum Range | Up to 1500 m (4921 ft) depending on cable loss |
System Performance and Accuracy
| Parameter | Value |
|---|---|
| Corrected Directivity | > 42 dB (typical directivity after calibration) |
| Source Match | > 30 dB |
| System Impedance | 50 Ω |
Internal Power Meter (Standard)
| Parameter | Value |
|---|---|
| Power Meter Frequency Range | 50 MHz to 4.0 GHz |
| Power Display Range | -100 dBm to +110 dBm |
| Amplitude Accuracy | ±0.5 dB (at calibrated frequency) |
RF Port and Connection Interfaces
| Parameter | Value |
|---|---|
| RF Out Port Connector | Type N, female, 50 Ω |
| RF Out Port Damage Level | +26 dBm peak, ±50 VDC |
Compliance, Standards, and Calibration
| Parameter | Value |
|---|---|
| Internal Calibration | Built-in InstaCal™ module (2 MHz to 4.0 GHz) |
Data Storage and Trace Management
| Parameter | Value |
|---|---|
| Internal Memory Storage Capacity | 8 GB internal flash (stores > 1000 traces and setups) |
| External Memory Support | USB flash drive compatible |
| Markers | 8 markers, with delta, peak, and valley search options |
| Limit Lines | Upper, Lower, Single, Multi-segment (limit envelope) |
| PC Analysis Software Compatibility | Line Sweep Tools (LST) |
Power and Battery Management
| Parameter | Value |
|---|---|
| Battery Chemistry | Lithium-Ion |
| Battery Operational Runtime | > 4.0 hours (typical, continuous use) |
Physical and Environmental Specifications
| Parameter | Value |
|---|---|
| Storage Temperature Range | -40 °C to +71 °C |
| Maximum Relative Humidity | 95% non-condensing |
| Maximum Operating Altitude | 4600 m (15092 ft) |
Capabilities
| Parameter | Value |
|---|---|
| External Power Sensor Compatibility | Anritsu MA24105A, MA24106A, MA24108A, MA24118A, MA24126A, MA24208A, MA24218A, MA24330A, MA24340A, MA24350A |
| GPS Receiver Option | Option 0031 (requires external antenna) |
Performance
| Parameter | Value |
|---|---|
| On-Channel Interference Immunity | +17 dBm |
| On-Frequency Interference Immunity | +17 dBm |
Power
| Parameter | Value |
|---|---|
| Battery Charging Time | 4 hours typical (instrument off) |
| AC Adapter Input | 100 to 240 V AC, 50 to 60 Hz, 1.5 A max |
| AC Adapter Output | 12 VDC, 5.0 A |
| Battery Capacity | 3.1 Ah (34.4 Wh) |
| Battery Voltage | 11.1 V |
Data Storage
| Parameter | Value |
|---|---|
| Supported File Export Formats | .stp, .dat, .vna, .png, .pdf, .txt, .csv |
Environmental & Compliance
| Parameter | Value |
|---|---|
| Ruggedness Compliance | MIL-PRF-28800F Class 2 |
| EMC Compliance | EU Directive 2014/30/EU, EN 61326-1, C-Tick EN55011 |
| Safety Compliance | EN 61010-1 |
Frequency
| Parameter | Value |
|---|---|
| Frequency Aging | ±1.0 ppm/year |
Display
| Parameter | Value |
|---|---|
| Display Resolution | 800 x 480 pixels (WVGA) |
Calibration
| Parameter | Value |
|---|---|
| Supported Calibration Methods | OSL, FlexCal™ |
Measurements
| Parameter | Value |
|---|---|
| Cable Loss Resolution | 0.01 dB |
| VSWR Resolution | 0.01 |
GPS Option
| Parameter | Value |
|---|---|
| GPS Antenna Connector | SMA, female (with GPS Option 0031) |
| GPS Satellites Tracked | Up to 12 satellites |
Environmental
| Parameter | Value |
|---|---|
| Storage Altitude | Up to 15,240 m (50,000 ft) |
Technology
Cable and Antenna Analysis
Applications
Cellular, wireless, broadcast, and defense antenna system testing