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8M083X25 R14
APX Series P25 Interface
DVRS Installation & Programming Guide
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PART II
January 2019
Page 129 of 153
In case of insufficient DVR Tx Power or poor sensitivity, please verify that the frequencies
programmed in the DVR are within the filtering specifications as indicated on the duplexer
and in-band filtering labels.
Ensure the DVR is only enabled on MSU Modes using the frequency plan for the specific
DVR Model.
Firmware Upgrade
Some DVRS units which were originally shipped with older firmware may require
EEPROM map upgrade after re-flashing them with newer firmware. To upgrade the
EEPROM, please follow the instructions shipped with the flash upgrade.