Freedom R8100 SERIES, Operator'S Manual

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Figure 2.2.7.3.1.2-3 P25 Voice Loopback
Play Last Recording (Voice Loopback submenu)
This selection appears only after a recording has been made. Pressing the soft key places the R8100 in
Generate mode and modulates the carrier with the most recently recorded voice channel data after the
Voice Loopback function is enabled. The total transmission time is equal to the length of recorded data,
and a bar graph indicates the remaining transmission time during playback. Speech recorded from a
transmitting P25 radio under test should be heard from its receiver if the radio is operating properly.
Record Duration (Voice Loopback submenu)
Sets the maximum length of a recording. The time can be varied from 1 to 10 seconds in a data entry
window using the arrow keys, keypad, or spin knob. If the transmission is longer than this time, only the
most recent is retained.
Copy NAC to Generator (P25 submenu)
Set the R8100 voice frame encoder’s Network Access Code to the decoder’s received NAC for
transmission back to a radio under test. The R8100 can receive transmissions from a radio under test