Viavi (IFR) 2968 TETRA Radio Test Set

The Viavi / IFR 2968 TETRA Radio Test Set is a single box solution for testing TETRA radio terminals and / or base stations and has been designed to offer maximum flexibility to satisfy applications in design, manufacturing and radio maintenance.
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Viavi / IFR 2968 TETRA Radio Test Set Description

The Viavi / IFR 2968 TETRA Radio Test Set is a single box solution for testing TETRA radio terminals and / or base stations and has been designed to offer maximum flexibility to satisfy applications in design, manufacturing and radio maintenance. The test set provides all the necessary signalling to control a TETRA radio and then make measurements of key transmitter and receiver RF and audio parameters. Measurements are performed accurately with speed and ease.

TETRA Measurements

Transmitter measurements performed on terminals and base stations include burst power, power profile, frame alignment (burst timing error), frequency error, modulation accuracy (EVM) and residual carrier. All are performed in accordance with ETSI EN 300 394-1. These parameters are measured for each of the different TETRA burst types and displayed numerically on a summary screen as well as a graphical bar chart. Individual parameters are supported by dedicated graphical displays to aid design engineering or fault diagnosis. Demodulated symbol data for captured bursts can be displayed or output for offline storage or analysis.

The Viavi / IFR 2968 is able to perform TETRA receiver sensitivity measurements by various means depending upon the capability of the radio under test. TETRA terminals supporting TT loopback can be automatically tested by allowing the 2968 to control test mode registration and RF loopback during which BER, MER and RBER parameters can be measured. Terminals supporting T1 test mode can be tested for BER using T1 loopback; MER and BER may be measured by the terminal under test using the T1 signals generated by the 2968. The T1 signal types supported include TCH/7.2 type 1, TCH/2.4 type 4 and SCH/F type 2. Receiver sensitivity (SINAD, Distortion) may also be tested by recovering and analysing audio signals from the terminal using the array of standard audio analysis features of the tester. The 2968 provides the necessary RF stimulus modulated with a digitised encoded audio tone, silence or 'talkback'.

For base station testing the 2968 supports synchronisation either to the downlink signal generated by the base station or to a synchronisation pulse output from the base station. The RF T1 Test signal generated in the test set (TCH/7.2 type 7) stimulates the base station receiver to enable internal BER measurement.

Viavi / IFR 2968 Features

• TETRA terminal and base station test options
• Trunked Mode and optional Direct Mode
• Simplex and Duplex operation
• Group, Individual, Phone and Emergency call types
• Direct or Hook signalling
• TIPv3 compliant
• ETSI EN 300 394-1 transmitter and receiver measurements
• TETRA Test (TT) registration and TT loopback BER testing
• TI test signal generation and T1 loopback and BER testing
• Auto-test mode for fast terminal testing
• Audio loopback testing for voice or tones
• Multi-standard platform
• Optional TETRALOG protocol analysis
• Full span spectrum analyser and tracking generator
• Audio FFT analysis

Viavi / IFR 2968 TETRA Radio Test Set Description

The Viavi / IFR 2968 TETRA Radio Test Set is a single box solution for testing TETRA radio terminals and / or base stations and has been designed to offer maximum flexibility to satisfy applications in design, manufacturing and radio maintenance. The test set provides all the necessary signalling to control a TETRA radio and then make measurements of key transmitter and receiver RF and audio parameters. Measurements are performed accurately with speed and ease.

TETRA Measurements

Transmitter measurements performed on terminals and base stations include burst power, power profile, frame alignment (burst timing error), frequency error, modulation accuracy (EVM) and residual carrier. All are performed in accordance with ETSI EN 300 394-1. These parameters are measured for each of the different TETRA burst types and displayed numerically on a summary screen as well as a graphical bar chart. Individual parameters are supported by dedicated graphical displays to aid design engineering or fault diagnosis. Demodulated symbol data for captured bursts can be displayed or output for offline storage or analysis.

The Viavi / IFR 2968 is able to perform TETRA receiver sensitivity measurements by various means depending upon the capability of the radio under test. TETRA terminals supporting TT loopback can be automatically tested by allowing the 2968 to control test mode registration and RF loopback during which BER, MER and RBER parameters can be measured. Terminals supporting T1 test mode can be tested for BER using T1 loopback; MER and BER may be measured by the terminal under test using the T1 signals generated by the 2968. The T1 signal types supported include TCH/7.2 type 1, TCH/2.4 type 4 and SCH/F type 2. Receiver sensitivity (SINAD, Distortion) may also be tested by recovering and analysing audio signals from the terminal using the array of standard audio analysis features of the tester. The 2968 provides the necessary RF stimulus modulated with a digitised encoded audio tone, silence or 'talkback'.

For base station testing the 2968 supports synchronisation either to the downlink signal generated by the base station or to a synchronisation pulse output from the base station. The RF T1 Test signal generated in the test set (TCH/7.2 type 7) stimulates the base station receiver to enable internal BER measurement.

Viavi / IFR 2968 Features

• TETRA terminal and base station test options
• Trunked Mode and optional Direct Mode
• Simplex and Duplex operation
• Group, Individual, Phone and Emergency call types
• Direct or Hook signalling
• TIPv3 compliant
• ETSI EN 300 394-1 transmitter and receiver measurements
• TETRA Test (TT) registration and TT loopback BER testing
• TI test signal generation and T1 loopback and BER testing
• Auto-test mode for fast terminal testing
• Audio loopback testing for voice or tones
• Multi-standard platform
• Optional TETRALOG protocol analysis
• Full span spectrum analyser and tracking generator
• Audio FFT analysis