Inovonics 526 AM Modulation Monitor

Inovonics 526 AM Modulation Monitor

The all-digital 526 combines detailed DSP signal analysis with a menu-driven touch-screen display, plus Webserver-based total access for remote operation, including measurements, graphical data and direct Web-browser audio monitoring of the off-air program.

• Remotely tune AM band, read metering, peak flashers.
• Tuning Range: 520kHz to 1720kHz in 10kHz steps; 522kHz to 1719kHz in 9kHz steps.
• Graphic 5-inch touch-screen and remote display of all level metering.
• Station Rotation for `round robin´ monitoring of up to 30 preset stations.
• Remote control and monitoring via Web.
• Enhanced alarm logging with notifications via Email/SMS & SNMP.
• Remote listening with multi-user stream and Dante/AES67 AoIP.

RF & RECEPTION:

• Tuning Range:Tunes: 530kHz-1710kHz in 100kHz steps or 531kHz-1701kHz in 9kHz steps.
• Antenna Input:50Ω/75Ω (F), 1Vrms max.
• High-Level RF Input:Two selectable 50-ohm (BNC) inputs for day/night scheduling, 5Vrms max.
• Off-Air Sensitivity (for 50dB monaural SNR):For 50dB SNR, 5dBµV or better with 10kHz audio bandwidth and NRSC de-emphasis; 15dBµV or better with 15kHz bandwidth, no de-emphasis.
• Frequency Response:±0.25dB, 20Hz-15kHz in full-bandwidth mode.
• Distortion (at 99% modulation):<0.01% THD+N; <0.02% IMD (SMPTE, 60Hz/7kHz, 4:1).
• De-emphasis:NRSC ‘truncated’ 75µs (defeatable).
• Audio Cutoff Filter:Nth-order low-pass in audio monitor outputs only, programmable between 15kHz and 2kHz in 1kHz steps.

OUTPUTS AND PORTS:

Program Audio Outputs:
Monaural program audio is delivered to ‘Left’ and ‘Right’ outputs for convenience in audio monitoring. The 526 does not support AM-stereo broadcasting. NOTE: Levels noted apply to symmetrical, ±100% carrier modulation. Consider headroom allowances for +125% program peaks.

• Balanced Analog: (XLR) Outputs 1 and 2 (‘L/R’) are adjustable from –15dBu to +15dBu in 0.1dB steps; 200Ω resistive source.
• AES Digital: (XLR) Adjustable from –30dBFS to 0dBFS in 0.1dB steps; user-selected 44.1kHz or 48kHz sample rate; 110Ω transformer-coupled.
• Dante/AES67 Compatible AoIP Port: (RJ45) Output at 44.1kHz (Dante-only) or 44.1kHz/48kHz (Dante/AES67). The AoIP utility has independent IP, Audio Format and Transmit Flow settings; level adjustable from –30dBFS to 0dBFS in 0.1dB steps.
• UDP Stream: ADTS or ADTS in MPEG-TS transport.
• HTTP/Icecast ‘Casual’ Listening Stream: Web browser remote-listening stream employs HE-AACv2 encoding, 44.1kHz or 48kHz sample rate, bit-rates from 18kbps to 64kbps; accommodates up to 10 simultaneous listeners. HTTP/Icecast and raw UDP streams are available simultaneously.
• Headphone Jack: (¼” TRS) Menu-adjustable listening level.
• LAN Port: (RJ45) LAN connection to local network or Internet provides remote monitoring, control, listening and full SNMP implementation; user-programmable network setup and streaming parameters.
• Inputs: GPIs are ground-seeking logic inputs with internal pull-up to +5Vdc. Programmable to accept momentary or sustained ground to switch functions.
• Outputs: Individual open-collector NPN transistor closures to ground are associated with alarm alerts. Each is programmable for GPO assignment and logic polarity. Outputs sink 100mA, 40VDC max.

Display & Display Options

• Bargraph & Numerical Level Metering:Positive and Negative Carrier Modulation (+150%/ –100%) • Demodulated Monaural Audio (dB) • BS.1770 Loudness (LU) • RF SNR (%)
• Graphic Displays and History Plots:IF Spectrum • Audio Spectrum • IF/Demod Oscilloscope • Modulation History • RF Metrics History • Loudness History • Audio History • BandScanner.

Power, Evironmmental

• Power Requirements: 88-264VAC, Single-Phase; 12W.
• Size and Weight: 3½”H x 19”W x 9”D; 10 lbs. (shipping weight)
• Operating Environmental: 32°F/0°C-122°F/50°C; 0%-95% non-condensing relative humidity; 10,000ft/3048m.
• Conformances: CE: EN50081-1 / EN50082-1, 93/68/EEC, RoHS: 2002/95/EC.