-Frequency Response (Bypass Mode)
-Total System Distortion
-Defeatable Analog FM Processing delayFor years, broadcasters have trusted Optimod-FM 8500 to build audiences and ratings with its big, bold sound. Optimod-FM 5700i now offers the popular 8500 sound in a compact, cool-running 1U package at a more affordable price. The 5700i provides stereo enhancement, equalization, AGC, multiband compression, low-IM peak limiting, stereo encoding, and composite limiting—everything that you need to compete in your market.
More than 20 excellent sounding, format-specific factory presets get you started. You'll find all of your favorite 8500 presets here. Although the factory presets are fully competent “out of the box,” you can customize them with easy one-knob LESS-MORE control or with more than 60 advanced controls whose versatility will satisfy even the most finicky on-air sound designer. If you have created custom presets for Optimod-FM 8500, 8400, 8300, 5500, or 5300, you'll find that they import perfectly into the 5700i, retaining your carefully designed sound.
The FM and digital media processing paths split after the 5700i's stereo enhancer and AGC. There are two equalizers, multiband compressors, and peak limiters, allowing the analog FM and digital media processing to be optimized separately. The bottom line? Processing that optimizes the sound of your FM channel while punching remarkably crisp, clean, CD-like audio through to your digital channel audience.
If you choose to use the 5700i's superb DSP-based stereo encoder and composite limiter, be assured that they deliver an FM analog signal that is always immaculately clean and perfectly peak limited, with full spectral protection of subcarriers and RDS/RBDS regardless of the amount of composite limiting.
The 5700i includes a “ratings encoder loop-through” connection. This allows a ratings encoder with an AES3 digital input and output to be inserted between the output of the AGC, before the analog-FM and HD processing paths split or between the output of the audio processing and the input to the stereo encoder. This keeps the audio level driving the ratings encoder as high as possible, minimizing the number of “low audio level” alarms that the ratings encoder generates.
For our European customers, a second-generation ITU BS 412 multiplex power controller smoothly and naturally complies with the standard.
-Impedance: >10kΩ load impedance, electronically balanced1.
-Nominal Input Level: Software adjustable from –9.0 to +13.0 dBu (VU).
-Maximum Input Level: +27 dBu.
-Connectors: Two XLR-type, female, EMI-suppressed. Pin 1 chassis ground, Pins 2 (+) and 3 electronically balanced, floating and symmetrical.
-A/D Conversion: 24 bit 128x oversampled delta sigma converter with linear-phase anti-aliasing filter.
-Filtering: RFI filtered, with high-pass filter at 0.15 Hz.
-Configuration: Stereo. Flat or pre-emphasized (at 50μs or 75μs), software-selectable.
-Source Impedance: 600Ω or greater, balanced or unbalanced. Termination not required or recommended.
-Output Level (100% peak modulation): Adjustable from –6 dBu to +24 dBu peak, into 600Ω or greater load, software-adjustable.
-Signal-to-Noise: >= 90 dB unweighted (Bypass mode, de-emphasized, 20 Hz–15 kHz bandwidth, referenced to 100% modulation).
-L/R Crosstalk: <= –70 dB, 20 Hz–15 kHz.
-Distortion: <= 0.01% THD (Bypass mode, de-emphasized) 20 Hz–15 kHz bandwidth.
-Connectors: Two XLR-type, male, EMI-suppressed. Pin 1 chassis ground, Pins 2 (+) and 3 electronically balanced, floating and symmetrical.
-D/A Conversion: 24 bit 128x oversampled, with high-pass filter at 0.15 Hz (–3 dB).
-Filtering: RFI filtered.
-Configuration: Stereo per AES3 standard, 24 bit resolution, software selection of stereo, mono from left, mono from right or mono from sum.
-Sampling Rate: 32, 44.1, 48, 88.2, or 96 kHz, automatically selected.
-Connector: XLR-type, female, EMI-suppressed. Pin 1 chassis ground, pins 2 and 3 transformer balanced and floating, 110Ω impedance.
-Input Reference Level: Variable within the range of –30 dBFS to –10 dBFS.
-J.17 De-emphasis: Software-selectable.
-Filtering: RFI filtered.