Inovonics 531-N

$3,200.00 $2,880.00
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14.00 LBS
Inovonics 531-N

Incorporating all the necessary features for station setup, regulatory compliance, and remote monitoring, Inovonics' 531N is the ultimate choice for essential FM signal monitoring. Dependable, direct input and off-air reception lets you keep a sharp eye on your total RF signal performance whether you’re right at the transmitter site or half way around the world. 

The high-resolution LED bargraph displays are easy to read, and a "floating dot" program peak marker eliminates any ambiguity in the total-mod measurement. Off-air readings are qualified by Inovonics' exclusive multipath indicator, which also aids in antenna alignment during initial station build-outs. In addition, readouts of signal strength and synchronous AM noise qualify the incoming signal and validate measurements. Rear-panel alarms constantly check for Audio Loss, RF Loss, Multipath and Overmodulation, while advanced notifications alert personnel with e-mail or SMS messaging when any or all of the alarms occur.

Want to see the web interface for the 531-N, in action? Control and view the features, LIVE! Click here to check it out!

Main Features:
• Complete set of metering and measurement tools to ensure FM broadcast regulatory compliance worldwide. 
• Separate inputs for Antenna, High Level ʻdirectʼ RF, and composite signal measurements. 
• Full-time display of Signal Strength and Multipath effects, plus Synchronous AM noise output (BNC) to validate readings and aid in antenna alignment. 
• Composite and Balanced analog Left and Right line outputs. 
• Front panel metering for subcarrier injection levels: 38kHz, 57kHz (RDS), 67kHz, & 92kHz. 
• Advanced Metering includes an FFT Spectrum Analyzer for the MPX, Left/Right XY plots and audio levels over time. 
• Alarms for Peak Overmodulation, Signal Loss, Program Audio Loss and Multipath. 
• Rear-panel closures to ground enable remote alarm indications and preset station switching. 
• “Responsive” Remote Control Web interface with live audio streaming. 
• SNMP control and support. 

• Type: Double-conversion superhet circuit with proprietary ultra-linear, noise-rejecting pulse-counting FM detector. 
• Tuning Range: 87.9MHz to 108.1MHz in 100kHz increments. 
• Station Presets: 6 user-programmable pushbutton presets; local or remote selection. 
• RF Inputs: 1) F connector for 75-ohm antenna. 2) BNC connector for high-level 50-ohm RF sample; 1V - 7V r.m.s. 
• Receiver Sensitivity: 10µV (10dBf) for 50dB mono quieting; 250µV (60dBf) required for valid Total Modulation reading. 
• Receiver Selectivity: ±0.25dB, 20Hz - 50kHz; –1.5dB or less at 100kHz (see Figure 1); –35dB (typ) at 200kHz (see Figure 2). 
• Baseband Output: BNC composite/MPX demod output; 3Vp-p at 100%-modulation. RSSI (Incoming Signal Level): Independent front-panel LED bargraph metering of the relative strength of the incoming carrier. Multipath Distortion Measurement: Independent front-panel LED bargraph metering of the relative degree of multipath reception-distortion effects. 
• AM Noise Measurement: Front-panel metering may be switched to show the relative level of the incidental, synchronous AM noise component of the FM carrier. AM noise is routed to a separate BNC output and also monitored by headphones when selected. 
• Baseband Input: Adjustable BNC composite/MPX input to stereo decoder and subcarrier measurement circuitry. Accepts 100%- modulation levels of typical 3V p-p equating to ±75kHz carrier deviation. 
• Composite/MPX Metering: 58-segment LED bargraph display has quasi-peak response with floating peakhold. Switchable between positive deviation, negative deviation and highest of either. 
• Meter Resolution: 1% accuracy between 80% and 100% carrier modulation; 2% resolution between 46% and 80%. (100% = ±75kHz carrier deviation.) 
• Metering Integration: User-selectable at 0.1ms, 0.2ms, 0.5ms and 1.0ms. 
• Meter Frequency Response: +0/–1%, 10Hz - 100kHz. 
• Peak Flasher: Programmable in 1% increments between 95% and 120% of total carrier modulation. 
• Switch-Selected Composite/MPX Input: 1) Direct connection to the demodulated output of the off-air receiver section. 2) BNC connector accepts an external baseband input 3V p-p (adjustable) equivalent to full (±75kHz) carrier deviation. 
• Program Audio Outputs: 1) Balanced XLR Left & Right channel stereo program outputs deliver +4dBm at 100% monaural modulation (±75kHz carrier deviation). 2) Front-panel headphone jack. 
• Demod Metering Display: Dual LED bargraph displays show Left and Right or L+R and L–R demodulated program audio. The display is peak responding between +10dB and –30dB, and average responding between –30dB and – 64dB. 
• Stereo Audio Frequency Response: ±0.5dB, 10Hz - 15kHz. 
• Stereo Signal-to-Noise Ratio: Unmodulated (stereo) carrier noise is better than 65dB below 100% modulation with deemphasis applied. 
• Distortion: <0.075%THD at 400Hz 100% Modulation Mono. No De-Emphasis, unweighted 
• Stereo Separation: >55dB, 50Hz - 15kHz with an external composite/MPX input. In the off-air mode, receiver selectivity limits separation to >45dB, 50Hz - 15kHz (see Figure 3). 
• Stereo Crosstalk: By the M/S or S/M (stereo-difference) method, >60dB, 50Hz - 5kHz, derated to >45dB at 15kHz with external composite/ MPX input. In the off-air mode receiver selectivity limits crosstalk to >50dB, 50Hz - 5kHz, derated to >35dB at 15kHz. (See Figure 4.) 
• Stereo/Mono Switching: Mode switching is automatic with a front panel indicator; monaural reception may be forced with front-panel button or from the remote web interface. 
• Program De-Emphasis: May be turned on and off from front panel or web interface (indicator provided); internal jumper selects 50μs or 75μs characteristic. 
• Meter Scaling and Resolution/Accuracy: 58-segment LED bargraph display measures stereo pilot and subcarrier levels between 2.6% and 14% with 0.2% resolution and accuracy. Injection percentages refer to 100% = ±75kHz carrier deviation. 
• Metering Characteristic: Peak-responding in all modes. 
• Measurement Filters: 1) 19kHz Stereo Pilot Tone 2) 38kHz Residual Stereo Subcarrier 3) 57kHz RDS/RBDS Data Subcarrier 4) 67kHz SCA Audio Subcarrier 5) 92kHz SCA Audio Subcarrier 
• Peak Flasher: Ground-closure output gives remote indication coincidental with the front-panel Peak Flasher. Program Audio Loss: Front-panel LED and ground-closure (remote) alarm. Programmable from the front panel to indicate when either stereo channel remains 10dB or more below 0dB for a period that may be set between 10 seconds and 2 minutes. 
• Low Signal: Front-panel LED and remote ground-closure alarm; fixed at a level of incoming RF signal below which modulation measurements are not valid. 
• Multipath: Front-panel LED and remote ground-closure alarm; fixed at a degree of multipath distortion above which modulation measurements are not valid. 
• Rear Panel Connector: An RJ45 jack accepts TCP/IP Network Connections for remote setup and operation. 
• Settings: DHCP or Static IP address can be set from the front panel. 
• SNMP: Supports SNMP remote monitoring and control (MIB file can be downloaded directly from the 531N). 
• SMTP: Supports email services with or without SSL. 
• Dynamic DNS: Supports, and 
• Power Requirements: 105–130VAC or 210–260VAC, 50/60Hz; 20 watts. 
• Size and Weight: 3½”H x 19”W x 12”D (2U); 14 lbs. (shipping). 
• Environmental: 0°C - 50°C operating temperature range; 95% non-condensing relative humidity; up to 3000 meters AMSL.