Tektronix RSA513A – Real Time Spectrum Analyzers (9 kHz to 13.6 GHz Frequency Range)

• Frequency Range: 9 kHz-13.6 GHz
• Real-Time Bandwidth: 40 MHz
• Minimum Event Duration for 100% POI: 15 μs
• SFDR (typical): 70 dBc
• Weight: 3.85 kg (8.5 lb) with battery

With 40 MHz of real-time bandwidth, the unique DPX^® spectrum/spectrogram shows you every instance of an interfering or unknown signal, even down to 15 μs in duration. The following image shows a WLAN transmission (green and orange), and the narrow signals that repeat across the screen are a Bluetooth access probe. The spectrogram (upper part of the screen) clearly separates these signals in time to show any signal collisions.

Finding unexpected signals is easy with unattended mask monitoring. A mask can be created on the DPX^® spectrum display, and actions taken upon every violation, including stop, save a picture, save acquisition, or send an audible alert. In the illustration below, a mask violation has occurred in red on the mask, and a picture of the screen was saved as a result. Mask testing can be used for unattended monitoring and when playing back recorded signals, enabling testing for different violations on the same signals.

Direction-finding and signal strength measurements are quick and easy with the standard SignalVu-PC software. In the illustration below, using the recommended 3rd party Alaris smart antenna, a compass continuously monitors antenna direction while the signal strength monitor performs measurements and provides an audio indication of signal strength. When combined with the MAP option for SignalVu-PC, signal strength and azimuth are automatically placed on the map of your choice.

EMC/EMI

EMI pre-compliance and diagnostic measurements are easy with the instrument and SignalVu-PC. Transducer, antenna, preamplifier, and cable gain/loss can be entered and stored in correction files, and the standard spurious measurement feature of SignalVu-PC can be used to establish limit lines for your test. The following illustration shows a test from 30MHz to 960 MHz against the FCC Part 15 Class A limit shown shaded. The blue trace is the capture of Ambient. Violations are recorded in the results table below the graph. CISPR quasi-peak and average detectors can be added with option SVQP.

Bluetooth

Two new options have been added to help with Bluetooth SIG standard base transmitter RF measurements in the time, frequency, and modulation domains. Option SV27 supports Basic Rate and Low Energy Transmitter measurements defined by RF.TS.4.2.0 and RF-PHY.TS.4.2.0 Test Specification. It also demodulates and provides symbol information for Enhanced Data Rate packets. Option SV31 supports Bluetooth 5 standards (LE 1M, LE 2M, LE Coded) and measurements defined in the Core Specification. Both options also decode the physical layer data that is transmitted and color-encode the fields of the packet in the Symbol Table for clear identification.

Pass/Fail results are provided with customizable limits. Measurement below shows deviation vs. time, frequency offset, and drift and a measurement summary with Pass/Fail results.

APCO 25

SignalVu-PC application SV26 enables quick, standards-based transmitter health checks on APCO P25 signals. The following image shows a Phase II HCPM signal being monitored for anomalies with the spectrogram while performing transmitter power, modulation, and frequency measurements to the TIA-102 standards specification.

The measurements follow the definition in 3GPP TS Version 12.5 and support all base station categories, including picocells and femtocells. Pass/Fail information is reported and all channel bandwidths are supported.

The Cell ID preset displays the Primary Synchronization Signal (PSS) and the Secondary Synchronization Signal (SSS) in a Constellation diagram. It also provides Frequency Error.

The illustration below shows spectral monitoring with the spectrogram display combined with a Cell ID/Constellation, Spectrum Emission Mask and ACLR measurements.

Mapping

The SignalVu-PC MAP application enables interference hunting and location analysis. Locate interference with an azimuth function that lets you draw a line or an arrow on a mapped measurement to indicate a direction, or use the recommended Alaris smart antenna with automated azimuth placement.

Application SV54 enables expert systems guidance to aid the user in classifying signals. You can quickly create a spectral region of interest, enabling users to identify and sort signals efficiently. The spectral profile mask, when overlaid on top of a trace, provides signal shape guidance while frequency, bandwidth, and channel number are displayed allowing for fast classification. WLAN, GSM, W-CDMA, CDMA, Bluetooth standard and enhanced data rate, LTE FDD and TDD, ATSC, and other signals can be quickly and simply identified. Databases can be imported from your H500/RSA2500 signal database library for an easy transition to the new software base.

A typical signal survey is shown below. The survey is of a portion of the TV broadcast band, and 7 regions have been declared as either Permitted, Unknown, or Unauthorized, as indicated by the color bars for each region. In the detailed illustration, a single region has been selected, and since we’ve declared this to be an ATSC video signal, the spectrum mask for the ATSC signal is shown overlaid in the region. The signal is a close match to the spectrum mask, including the vestigial carrier at the lower side of the signal, characteristic of ATSC broadcasts.