The Anritsu S251A is a dual-port scalar network analyzer designed for measuring amplitude characteristics within the 625 MHz to 2.5 GHz frequency range. This instrument is suitable for a variety of applications, including production, installation, and maintenance environments, particularly in cellular, PCS/GSM, and ISM applications. Its primary function is to analyze transmission lines and antennas, offering a cost-effective alternative to heavier, more complex test equipment.
### Technical Specifications
* **Frequency Range:** 625 MHz – 2.5 GHz (or 650 MHz – 2500 MHz)
* **Frequency Accuracy (CW Mode):** 75 ppm
* **Frequency Resolution:** 100 kHz
* **Return Loss Range:** 0 dB to 54 dB
* **Return Loss Resolution:** 0.01 dB
* **Dynamic Range:** >90 dB
* **Immunity to Interfering RF Signals:**
* Reflection: up to +2 dBm
* Reflection: up to +10 dBm
* Transmission: up to +30 dBc
* **Measurement Capabilities:**
* Return Loss (RL)
* Voltage Standing Wave Ratio (VSWR)
* Cable Loss
* Distance-To-Fault (DTF) analysis using Frequency Domain Reflectometry (FDR)
* S21 (Transmission Gain/Loss)
* Insertion Loss/Gain
* Antenna-to-antenna isolation measurements
* Power Meter (Optional, Option 05)
* **Signal Source:** Built-in synthesized signal source
* **Output Power Levels (Selectable):** +6 dBm or +30 dBm
* **Bias Tee:** Optional (S251A)
* **Memory:** Internal memory saves up to 70 traces
* **Display:** Liquid Crystal Display (LCD) with backlight for low-light environments
* **User Interface:** Keypad for data entry
### Electrical Specifications
* **Battery Operation:** Up to two hours of continuous operation from a fully charged internal battery
* **External Power:** Operable from a 12.5 V DC source, which also simultaneously charges the battery
* **Energy Conservation Features:** Built-in features to extend battery life
### Interfaces
* **RS-232 Serial Port:** For direct printing and remote operation
### Physical Characteristics
* **Form Factor:** Handheld, lightweight unit designed for field use
* **Portability:** Replaces stacks of heavy, expensive, and complex test equipment
### Operational Features
* **RF Interference Rejection:** Patented feature for accurate measurements in high RF activity environments
* **Distance-To-Fault (DTF) Capability:** Built-in for locating faults within transmission systems
* **Data Analysis Software:** Available for trend assessment, problem identification, performance analysis, and professional report generation
* **Limit Line and Markers:** Settable frequency markers and limit lines for trace enhancement
* **Audible Alert:** Menu option for an audible beep when a limit value is exceeded
### Compatibility
* **Applications:** Cellular, PCS/GSM, ISM, WLAN/WPBX, land mobile radio (LMR), broadcast, and defense radio systems
* **Tower Mounted Amplifiers (TMA):** Verification of TMA gain before and after installation
### Documentation
* **User Manual:** Available, with release date of 12/31/1997 for the S251A
* **Maintenance Manual:** Available for the S251A
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**Why Choose Aumictech for the Anritsu S251A – Dual Port Scalar Network Analyzer?**
At Aumictech, we specialize in supplying high-end RF and microwave test equipment. Whether you require precise amplitude measurements for cellular infrastructure, reliable diagnostics for antenna systems, or efficient troubleshooting for transmission lines, our procurement specialists ensure the Anritsu S251A delivers maximum performance for your application. We understand the critical demands of engineers, system integrators, and labs, providing verified technical equipment to meet your project’s exacting specifications.
