Tektronix RSA503A 3 GHz real-time analyzer
The RSA503A USB spectrum analyzer offer high performance portable spectrum analysis in a rugged battery-powered package.
Features and benefits
- 9 kHz to 3 GHz frequency range covers a broad range of analysis needs
- 40 MHz acquisition bandwidth enables real time analysis for transient capture and vector analysis
- Standard GPS/GLONASS/Beidou receiver for mapping
- Optional tracking generator for gain/loss, antenna and cable measurements
- Streaming capture can be used to record and play back long term events
- Mil-Std 28800 Class 2 environmental, shock and vibration specifications for use in harsh conditions
- Internal battery for extended field operations
- SignalVu-PC software offers real time signal processing with DPX Spectrum/Spectrogram to minimize time spent on transient and interference hunting
- 100 μsec minimum signal duration with 100% probability of intercept ensure you see problems first time, every time
- Application programming interface included for development of custom programs
- Accessories including tablet PC, calibration kits, adapters and phase-stable cables offer a complete field solution for interference hunting and transmitter maintenance
- Spectrum management
- Interference hunting
- Maintenance, installation and repair of radio networks
The RSA503A Series saves you time and helps you succeed
The RSA503A was built to bring real-time spectrum analysis to solving the problems of spectrum managers, interference hunters and network maintenance personnel who need to track down hard to find interferers, maintain RF networks and keep records of their efforts. The heart of the system is the USB-based RF spectrum analyzer that captures 40 MHz bandwidths with great fidelity in harsh environments. With 70 dB dynamic range and frequency coverage to 3 GHz, all signals of interest can be examined with high confidence in your measurement results. The USB form factor moves the weight of the instrument off of your hands, and replaces it with a lightweight Windows tablet or laptop. Holding a light PC instead of a heavy spectrum analyzer means you can move faster, for longer, and get your work done faster.
The optional tracking generator enables gain/loss measurements for quick tests of filters, duplexers and other network elements, and you can add cable and antenna measurements of VSWR, return loss, distance to fault and cable loss as needed.
SignalVu-PC software offers rich analysis capability in the field
The RSA503A series operates with SignalVu-PC, a powerful program used as the basis of Tek’s traditional spectrum analyzers. SignalVu-PC offers a deep analysis capability previously unavailable in high performance battery-operated solutions. Real-time processing of the DPX spectrum/spectrogram is enabled in your PC, further reducing the cost of hardware. Customers who need programmatic access to the instrument can choose either the SignalVu-PC programmatic interface or use the included application programming interface (API) that provides a rich set of commands and measurements directly. Basic functionality of the free SignalVu-PC program is far from basic. Base version measurements are shown below.
The RSA503A combined with SignalVu-PC offers advanced field measurements
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 100 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 available Alaris smart antenna, a compass continuously monitors antenna direction while the signal strength monitor performs measurements and provide 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.
The tracking generator (Option 04 on the RSA503A) is controlled via SignalVu-PC. Here you can enter start-stop frequencies, set number of steps in the span, adjust reference level, and normalize the tracking generator with a calibrate function. A bandpass filter response from 800 MHz to 3 GHz is shown below.
SignalVu-PC application-specific licenses
SignalVu-PC offers a wealth of application-oriented options including:
- General-purpose modulation analysis (27 modulation types including 16/32/64/256 QAM, QPSK, O-QPSK, GMSK, FSK, APSK)
- Buetooth® analysis of Low Energy, Basic Rate and Enhanced Data Rate
- P25 analysis of phase I and phase 2 signals
- WLAN analysis of 802.11a/b/g/j/p, 802.11n, 802.11ac
- LTE™ FDD and TDD Base Station (eNB) Cell ID & RF measurements
- Pulse analysis
- AM/FM/PM/Direct Audio Measurement including SINAD, THD
- Playback of recorded files, including complete analysis in all domains
- Signal classification and survey
See the separate SignalVu-PC data sheet for complete details and ordering information. Selected applications are illustrated below.
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.
Application SV28 enables the following LTE base station transmitter measurements:
- Cell ID
- Channel power
- Occupied bandwidth
- Adjacent channel leakage ratio (ACLR)
- Spectrum emission mask (SEM)
- Transmitter off power for TDD
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.
Return Loss/VSWR, distance to fault and cable loss – Perform component characterization tasks easily and cost-effectively. When equipped with the option 04 tracking generator, the RSA500A series with application license SV60xx-SVPC makes one-port measurements on cables, devices and antennas.
Return loss of a bandpass filter measured from 700 MHz to 2.6 GHz. Markers have been placed a 1.48 GHz (-34.4 dB return loss) and at 1.73 GHz (-11.68 dB return loss), indicating the best and worse match in the passband of the filter
Application SV56, Playback of recorded signals, can reduce hours of watching and waiting for a spectral violation to minutes at your desk reviewing recorded data.
Recording length is limited only by storage media size, and recording is a basic feature included in SignalVu-PC. SignalVu-PC application SV56 (Playback) allows for complete analysis by all SignalVu-PC measurements, including DPX Spectrogram. Minimum signal duration specifications are maintained during playback. AM/FM audio demodulation can be performed. Variable span, resolution bandwidth, analysis length, and bandwidth are all available. Frequency mask testing can be performed on recorded signals, with actions on mask violation including beep, stop, save trace, save picture, and save data. Portions of the playback can be selected and looped for repeat examination of signals of interest. Playback can be skip-free, or time gaps can be inserted to reduce review time.
Clock time of the recording is displayed in the spectrogram markers for correlation to real world events. In the illustration below, the FM band is being replayed, with a mask applied to detect spectral violations, simultaneous with listening to the FM signal at the center frequency of 92.3 MHz.
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 direction, or use the available 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 easy transition to the new software base.
A typical signal survey is show 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 detail 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.
Return Loss/VSWR, distance to fault and cable loss – Perform maintenance and troubleshooting tasks with ease. When equipped with the option 04 tracking generator, the RSA500A series with application license SV60xx-SVPC makes one-port measurements on cables, devices and antennas.
Return loss vs distance for a cable with an inserted barrel and an extension cable. The point at M2 (17.638 m, MR) is the barrel connector, and the point marked by M1 at 19.725 m is the end of the cable.
Return loss of a bandpass filter measured from 700 MHz to 2.6 GHz. Markers have been placed a 1.48 GHz (-34.4 dB return loss) and at 1.73 GHz (-11.68 dB return loss), indicating the best and worse match in the passband of the filter.
Instrument controller for USB spectrum analyzers
For field operations, a complete solution requires a Windows Tablet or laptop for instrument operation, record keeping and communication. Tektronix offers the Panasonic FZ-G1 tablet computer as an option to the RSA500 series and as a standalone unit.
When purchased from Tektronix, the FZ-G1 includes pre-loaded SignalVu-PC software, with custom-programmed display settings and front-panel buttons to optimize the SignalVu-PC experience. In addition, Tektronix has tested the FZ-G1 to ensure that the specified real time performance of all USB spectrum analyzers is met with this configuration. Accessories including battery packs, cases and automotive power adapters are also available from Tektronix.
Key specifications, instrument controller
- Windows 7 operating system (Win8 Pro COA)
- Intel® Core i5-5300U 2.30GHz Processor ( i5-4310U 2.00GHz in China)
- 8GB RAM
- 256 GB Solid State Drive
- 10.1″ (25.6 cm) Daylight-readable screen
- 10-point Multi Touch+ Digitizer screen plus included pen interface
- USB 3.0 + HDMI Ports, 2nd USB Port
- Wi-Fi, Bluetooth® and 4G LTE Multi Carrier Mobile Broadband with Satellite GPS
- MIL-STD-810G certified (4′ drop, shock, vibration, rain, dust, sand, altitude, freeze/thaw, high/low temperature, temperature shock, humidity, explosive atmosphere)
- IP65 certified sealed all-weather design
- Integrated microphone
- Integrated speaker
- On-screen and button volume and mute controls •
- Integrated battery backup for hot-swap of battery packs
- 3-year Warranty with Business Class Support (provided by Panasonic in your region)
Smart antenna for interference hunting
Tektronix offers the Alaris DFA-0047 1 smart antenna with built-in USB compass for direction finding and interference hunting applications. Full details on the antenna are available in the Alaris data sheet available on Tek.com by searching on Alaris. A summary of features and specifications is shown below.
- Frequency Range: 20 MHz – 8.5 GHz
- 9 kHz-20 MHz extension available(0.3m loop antenna), order DF-A0047-01 1
- Trigger control for one-hand operation with functions for:
- Preamp on/off
- Band switch
- Push to measure with SignalVu-PC with MAP option
- Standard armrest extension for ease in long interference hunting sessions
- Transit case available
Alaris direction-finding smart antenna.
1 Alaris antenna and Panasonic tablet are available in limited geographies. See ordering information for details.
Calibration kits, phase-stabilized cables, adapters, antennas and other accessories
The RSA56RACK holds one RSA503A for rackmount applications