Test Mobile and Test Portable Solutions

Project 25 phase 1&2 Test

STI supplies test mobile and portable radio for P-25 phase 1 & 2 RSSI and BER coverage and performance testing.

Phase 1 measurements are made on the standard 1011 Hz test pattern transmitted by a base station or repeater to measure BER and RSSI metrics during drive-test or indoor projects. These measurements and the location of readings from a GPS during drive test or by floor plan reference during indoor projects are displayed on screen and then saved into the measurement database. This measurement process is repeated continuously during the drive-test throughout the geographic area of interest. The STI Field Test 7 completely automates the drive test data acquisition, recording of BER and RSSI from data returned by the P-25 radio and report of the coverage test results.

Phase 2 Project 25 measurements are made from the 1031 pattern.

Currently available for VHF, UHF, 700 and 800 MHz P-25 systems with transmitters that are able to produce the 1011 Hz test tone (a standard capability). Test mobiles and portables are available from STI for use with STI Field Test 7,Field Test 7 package, STI-9400 and STI-9450.

     

Coverage results of P-25 BER (on left) and P-25 RSSI (on right)

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DMR Test Mobile and Portable Solutions

…………………..More here or combine with the P-25 solutions?…………………………………..

BSQM Go Case

BSQM Go Case Photo

BSQM block diagram

Reference the Rural Radio Article

Best Server Quality Measurement (BSQM) option provides a method for measuring signal strength and frame error rate on the best available channels in a system topology with many possible channels. This provides system coverage and performance statistics for the system dynamically under test 4 layers deep.

Multi-RX Go Case

Multi-Rx Go case picture

Multi-Rx block diagram

The Survey Technologies Multi-Rx Go Case provides a way to combine up to 4 radios into a single wheeled transportation case. This solution enables RSSI and BER measurements of up to 4 frequencies in any band covered by the Tait test mobiles. This solutions can be used for site-side measurements during uplink testing or in the drive-test vehicle for measuring signals from multiple bands in one drive test.

RX-TX Go Case

Rx Go case picture

Multi-Rx block diagram

The Survey Technologies Multi-Rx Go Case provides a way to combine up to 4 radios into a single wheeled transportation case. This solution enables RSSI and BER measurements of up to 4 frequencies in any band covered by the Tait test mobiles. This solution can be used for site-side measurements during uplink testing or in the drive-test vehicle for measuring signals from multiple bands in one drive test.

Audio Quality Test

Clean Audio Screen
Distorted Audio Screen
Audio Quality Test Option Diagram
12dB SINAD / Scope View of Audio Sample screen

The Audio Quality Test option combines the ability to measure RSSI voltage, converted to signal strength through a calibration table, with the ability to digitize a sample of audio signal and compute SINAD from the sample. Either one or two tones are broadcast from the site under test using the audio generator connected to the site audio input. The audio signal is sampled at 10,000 Hz rate for about eight/tenths of a second producing over 8000 samples. This can be done with both wide and narrowband analog radios taking the guess-work out of Narrowband Migration.  The STI AQT System includes data acquisition hardware and software and a specialized audio sample analysis capability. The STI AQT is designed to operate on a communication system by continuously transmitting audio test signals generated by the STI AQT Generator while in a test vehicle Field Test 7 is used to acquire signal intensity and audio quality data from the customer mobiles during drive tests.

PTT / GPS Timer

The STI PTT/GPS timer can be combined with other STI products to synchronize data acquisition in intermittent signal testing situations. A laptop running the STI GPS Timer application and AQT Test Generator can be used at the transmission site to transmit a time synchronized test signal to the STI-9400 in the mobile vehicle.

The STI PTT / GPS Timer can also be used for uplink testing requirements. By adding the STI PTT-Switch / GPS Timer, a mobile transmitter in the test vehicle can be used to synchronously transmit a test signal up to the site for measurements by Field Test 7 done at the site. Lastly measured data from the site and location data from the mobile transmissions can be combined during post processing to show uplink coverage and performance.  There is a PTT/ GPS timer built into the Rx/Tx Go case and one is also used with the site side measurements in the uplink test configurations.

Services available from Survey Technologies

Services available from Survey Technologies

  • RF Coverage Testing
  • Benchmark Testing
  • Maintenance Tests
  • CATP / Compliance Tests
  • Drive-Testing
  • Indoor Coverage Testing

RF coverage testing services are available on a bid/quotation basis. Please contact Survey Technologies at 1-800 DriveTest, or send us a message…[email link]

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