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Freedom R8100 SERIES User Manual

Freedom R8100 SERIES
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152
Figure 3.2.8.6.3-1 Main screen after selecting NXDN Trunk Test Mode
When the NXDN™ Type C Trunk Test Mode is selected the R8100 is automatically placed in Duplex
mode and begins transmitting idle messages on the control channel with no encryption. Pressing the
NXDN™ Trunk soft key on the main screen displays a submenu with the following settings (see Figure
3.2.8.6.3-2).
A NXDN™ Type C trunked radio connected to the R8100 and turned on automatically registers with the
analyzer if the Band Plan settings are configured for the system under test. The registration progress is
shown in the Meter Zone “Status” field, and the radio ID parameters are populated on the display.
Once the radio is registered, a voice test using the Voice Loop feature can be performed. Keying the radio
under test transitions it to the voice channel and the R8100 automatically records up to the last 10 seconds
of conversation, as long as the signal is above the squelch level setting. Unlike other test modes, the Voice
Loop feature is always enabled in NXDN™ Type C Trunk test mode. The maximum length of a recording
is fixed at 10 seconds. The recording continues if the transmission is longer than this duration, but only
the most recent is retained. When the radio is un-keyed the R8100 initiates a voice call and replays the
last recorded conversation; to play another conversation another recording must be made. This provides a
quick end-to-end test of the NXDN™ radio transmitter and receiver. This Voice Loop feature can even
be used to verify basic functionality of a NXDN™ radio with an encrypted voice channel.

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Freedom R8100 SERIES Specifications

General IconGeneral
BrandFreedom
ModelR8100 SERIES
CategoryMeasuring Instruments
LanguageEnglish

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