Features

Making the Most of the AM Channel

Gain-riding: The 9300 rides gain over an adjustable range of up to 25 dB, compressing dynamic
range and compensating for operator gain-riding errors and for gain inconsistencies in automated systems.
Multiband Limiting & Multiband Distortion-canceling Clipping: The 9300 increases the density and loudness of the program material by multiband limiting and multiband distortion-canceling clipping, improving the consistency of the station's sound and increasing loudness and definition without producing audible side effects.
Peak Control: The 9300 precisely controls peak levels to prevent overmodulation.
Program Equalizer: The 9300 compensates for the high- and low-frequency rolloffs of typical AM receivers with a fully adjustable program equalizer providing up to 20dB of high-frequency boost (at 5 kHz) without producing the side effects encountered in conventional processors. This equalizer can thus produce extreme pre-emphasis that is appropriate for very narrow-band radios. The 9300's fully parametric low and mid-frequency equalizers allow you to tailor your air sound to your precise requirements and desires. The 9300 also fully supports the NRSC standard preemphasis curve.

Controllable and Adjustable

Factory Preset Controls: The 9300 comes with a wide variety of factory presets to accommodate almost any user requirement. A single LESS-MORE control easily modifies any factory preset. The user (via FULL MODIFY) can further customize the presets, and these can be stored and recalled on command. Advanced Control (accessible from the PC Remote application) facilitates detailed sound design using the same controls that were available to the factory programmers.
LCD and Full-time LED Meters: An LCD and full-time LED meters make setup, adjustment and programming of the 9300 easy—you can always see the metering while you're adjusting the processor. Navigation is by dedicated buttons, soft buttons (whose functions are context-sensitive), and a large rotary knob. The LEDs show input levels, output levels, and gain reduction in the AGC and five-band compressor/limiter.
Real-time Clock: The 9300 contains a versatile real-time clock, which allows automation of various events (including recalling presets) at pre-programmed times.
Proof of Performance Tests: A Bypass Test Mode can be invoked locally, by remote control (from either the 9300's GPI port or the 9300 PC Remote application), or by automation to permit broadcast system test and alignment or "proof of performance" tests.
Software: The 9300's software can be upgraded by running Orban-supplied downloadable upgrade software on a PC. The upgrade can occur remotely through the 9300's Ethernet port or serial port (connected to an external modem), or locally (by connecting a Windows^® computer to the 9300's serial port through a null modem cable).
Built-in Line-up Tone Generator: The 9300 contains a built-in line-up tone generator that offers sine, square, and triangle waves, facilitating quick and accurate level setting in any system.
Remote Control: The 9300 can be remote-controlled by 5-12 V pulses applied to eight programmable, optically isolated "general-purpose interface" (GPI) ports.
9300 PC Remote Software: 9300 PC Remote software runs under Windows 2000 and XP. It communicates with a given 9300 via TCP/IP over modem, direct serial, and Ethernet connections. You can configure PC Remote to switch between many 9300s via a convenient organizer that supports giving any 9300 an alias and grouping multiple 9300s into folders. Clicking a 9300's icon causes PC Remote to connect to that 9300 through an Ethernet network or initiates a Windows Dial-Up or Direct Cable Connection if appropriate. The PC Remote software allows the user to access all 9300 features (including advanced controls not available from the 9300's front panel) and allows the user to archive and restore presets, automation lists, and system setups (containing I/O levels, digital word lengths, GPI functional assignments, etc.).

Versatile Installation

Bandwidth Control: OPTIMOD-AM controls the transmitter bandwidth as necessary to meet government regulations, regardless of program material or equalization. OPTIMOD-AM's high-frequency bandwidth can be switched instantly in 500 Hz increments between 4.5 kHz and 9.5 kHz. The lower cutoff frequencies meet the output power spectral density requirements of ITU-R 328-5 without further low-pass filtering at the transmitter, while the 9.5 kHz filter meets the requirements of the NRSC-1 standard (North America). The 5.0 kHz filter makes the analog AM bandwidth compatible with HD-AM transmission. The low-pass filters have parametric cutoff shapes, allowing you to trade off filter ringing against frequency response flatness.
Four-parameter Transmitter Equalizer: OPTIMOD-AM compensates for inaccuracies in the pulse response (tilt, overshoot, ringing) of transmitters and antenna systems with a powerful four-parameter transmitter equalizer. A built-in square-wave generator makes adjustment easy. Four sets of equalizer parameters can be stored and recalled, allowing you to program day and night variations for two transmitters.
Analog and AES3 Digital Inputs and Outputs: The 9300 includes analog and AES3 digital inputs and outputs. The analog inputs are transformerless, balanced 10 kΩ instrumentation-amplifier circuits, and the analog outputs are transformerless balanced, and floating to ensure highest transparency and accurate pulse response. Two mono analog outputs and one AES3 output accommodate as many as three transmitters. Both the digital output and the digital input are equipped with sample rate converters and can operate at 32 kHz, 44.1 kHz, 48, 88.2 and 96 kHz sample rates. The pre-emphasis status and output levels are separately adjustable for the analog and digital outputs.
Installation: The 9300 is usually installed at the transmitter, replacing all processing normally employed at the transmitter site, including compressor, protection peak limiters, clippers, and high- and low-pass filters normally included within the transmitter. It can also be installed at the studio if an uncompressed digital STL is available. If you need a studio AGC to perform gain control before an STL, we recommend the Optimod 6300.
Monitor Rolloff Filter: The 9300 comes with a Monitor Rolloff Filter for use in studio monitoring. This filter emulates the frequency response of an average receiver.
RFI Suppression: All input, output, and power connections are rigorously RFI-suppressed to Orban's traditional exacting standards, ensuring trouble-free installation.
Safety Standards: The 9300 is designed and certified to meet all applicable international safety and emissions standards.

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