Freedom R8100 SERIES, Руководство оператора

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Figure 3.2.8.3.2-2 Voice Loopback Playing
Color Code
Selects one of 16 color codes (0 to 15) to match that of the radio or base station for the specific channel
frequency being tested. Although the R8100 can analyze a transmission with any color code, radios will
only accept a transmission whose color code matches its own (unless the radio is in a test diagnostic mode
that ignores the color code).
Modulation Mode
A horizontal submenu provides choice of Off or Continuous for the selected Test Pattern modulation.
Test Pattern
Specifies the DMR compliant test pattern generated by the R8100 to assess voice performance or test data
transmission accuracy using BER measurements. When performing the BER test the radio receiver under
test must be placed in a test diagnostic mode with the correct RX test pattern selected using the
manufacturer’s Radio Service Software (RSS) / MOTOTRBO™ Tuner to enable it to calculate BER
internally. The calculated BER is then displayed by the radio or on the computer (as is the case for
MOTOTRBO™ Tuner). For sensitivity tests the R8100 can transmit a super frame test pattern, O.153
(V.52) for example, over its entire output power level range. This provides a measurement of the reference
sensitivity (1% or 5% BER) for the radio. A horizontal submenu provides the following DMR compliant
patterns:
1031 Hz Tone – a predefined super frame test pattern compatible with digital vocoder type AMBE+2™
that produces a 1031 Hz tone at the speaker of the receiver vocoder. It can be used to quickly check audio
performance in the field.
Calibration (O.153 1%) – This test pattern transmitted at the defined power level, -60 dBm for example,
is used to verify internal BER calculations are operating correctly. The 1% BER super frame test pattern