Nautel NV 4.0, NX 4.01
A key element to the update for both product lines is new test functionality, which allows real-time measurement of MER (Modulation Error Ratio). The measurements follow the new NRSC FM standard and do not require external equipment. MER metering is accessible from the Nautel Advanced User Interface (AUI) Constellation View display and may be viewed from the front panel 17" LCD touchscreen or via the Internet. Other updates addressed in the new firmware for both series include an updated Flash player; SMTP login capability for e-mail; port forwarding support; NTP (Network Time Protocol); the ability to save meters and critical parameters in memory; the ability to take action on audio loss in a manner similar to other Nautel products; restructured preset and sub-menu structures; SNMP (Simple Network Management Protocol) traps; summary alarms for remote interfacing and remote AUI timeout. NV-specific updates include PA field bias of individual stage amplifiers; a composite power limiter, left and right limiter; Asymmetrical HD Sideband support, HD PowerBoost support via presets and RF turn on delay for generator operation. NX-specific updates include a multi phase PDM cancellation routine, which results in an improved RF spectrum; a re-designed scheduler; USB audio (requires Nautel USB sound card) and playlist controller and Icecast/Shoutcast capability (Nautel USB sound card required).
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