Atec Aeroflex-3920 - Manual (Page 5)

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OPTIONAL SYSTEM PERSONALITIES
In addition to the Analog Duplex system, the 3920 can support a
number of optional test systems or personalities, installed
concurrently. Personalities include:
• TETRA digital trunked radio systems for mobile station and base
station testing
• TETRA direct mode testing
• APCO P25 conventional and trunked radios
• APCO P25 Phase II TDMA
• SmartZone and SMARTNET
• DMR (Digital Mobile Radio)
• NXDN
• HPD (High Performance Data)
• dPMR (digital Private Mobile Radio)
• ARIB STD-T98 (Digital Convenience Radio Equipment For
Simplified Service)
P25 CONVENTIONAL OPERATION (390XOPT200)
The 3920 P25 Conventional Option provides test features for testing
P25 radios and systems. Featured is the ability to transmit P25 C4FM
standard waveforms and analyze P25 received waveforms. The
analysis of the received waveforms consists of the ability to perform
RF and modulation parametric tests. The vocoder enables the user to
perform transmit and receive audio testing. Included in this option is
the capability to:
• Measure C4FM modulation fidelity and symbol deviation
• Measure power, frequency error and TX BER
• Measure symbol clock error
• Measure RX BER
• Display eye diagram of C4FM demodulation
• Display constellation plot of C4FM symbols
• Display C4FM symbol deviation distribution plot
• Transmit full TIA/EIA-102 test patterns (STD1011, CAL,
SILENCE, STD511, etc.) as specified by TIA- EIA-102.CAAA-C
• Transmit and receive live audio using the vocoder
• Transmit stored speech patterns
• Decode voice channel header and link control messages
• Encode link control messages
• Perform DES encryption
P25 Conventional
P25 Trunking Operation VHF/UHF/700/800 MHz
(390XOPT201)
To further enhance P25 operation, the addition of the P25 trunking
option allows simulation of a P25 control channel in any frequency
band. Channel plans may be configured to test virtually any P25
trunked system. A simulator tile logs the messages sent by the radio
under test and allows the 3920 to simulate a virtual mobile,
configured to talk to the radio under test. This option enables the
user to originate a group call to the radio under test or make a group
call from the radio under test to the 3920. In addition, the user can
have multiple radios register and affiliate with the 3920 and then
originate calls from one radio to the other radios.
P25 Trunking Simulation
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