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General| Category | Audio Processor |
|---|---|
| Type | FM Audio Processor |
| Input Channels | 2 (Stereo) |
| Output Channels | 2 (Stereo) |
| Signal-to-Noise Ratio | >80 dB |
| Dynamic Range | > 110 dB |
| Bit Depth | 24-bit |
| AES/EBU Digital Input/Output | Yes |
| Composite Output | Yes |
| Power Supply | 100-240V AC, 50/60 Hz |
| Total Harmonic Distortion | <0.01% |
| Sampling Rate | 48 kHz |
| Input Type | Analog, Digital (AES/EBU) |
| Output Type | Analog, Digital (AES/EBU) |
| Remote Control | Yes (via Ethernet) |
| Power Consumption | 50 Watts |
| Dimensions | 1.75" (H) x 19.0" (W) x 15.25" (D) |
| Operating Temperature | 0°C to 40°C |
| Storage Temperature | -20°C to 70°C |
| Humidity | 0 to 95% relative humidity, non-condensing |
| Weight | 12 lbs / 5.4 kg |
Highlights the 8700i's universal transmitter protection and audio processing for FM broadcast, including preemphasis limiting.
Outlines criteria for preserving peak levels through the audio system, emphasizing direct feeding to the stereo encoder.
Recommends locating the OPTIMOD-FM close to the transmitter for optimal composite waveform connection.
Explains how to temporarily defeat the 8700i's processing during EAS broadcasts using Bypass Test Mode.
Details PC software control access via network, modem, or direct connection, requiring a passcode.
Provides an overview of the installation process, including unpacking, mounting, and connecting.
Recommends using a UPS and details the dual-redundant power supply's automatic voltage acceptance.
Directs the user to following pages for detailed hookup and grounding information.
Provides guidelines for proper grounding to protect against power faults and ground loops.
Provides a guided procedure for setting up the 8700i for an analog-FM facility.
Guides the user through calibrating I/O parameters, including preemphasis, input selection, and clip level.
Explains how to set up multi-level passcodes for access control, including lockout and user privileges.
Details the procedure for installing the PC Remote software and necessary Windows services.
Emphasizes the importance of clean source material and an accurate monitor system for effective audio processing.
Explains the five-band or two-band operation of the multiband compressor/limiter and its controls.
Explains the ITU-R 412 requirement for limiting integrated multiplex power and the 8700i's power limiter.
Details the HD processing chain, including shared and independent controls for FM and HD paths.
Guides users on customizing the station's sound using subjective controls like Basic Modify, Intermediate Modify, and Advanced Modify.
Allows control of stereo enhancer, equalizer, and dynamics section via the LESS-MORE control.
Provides detailed instructions for removing and reinstalling major subassemblies like the Top Cover and DSP Board.
Instructions for reinstalling the I/O and DSP boards in reverse order of removal.
Details the required equipment and procedures for performing a performance audit of the 8700i.
Provides a general guide to identifying and resolving potential issues with the 8700i.
Suggests grounding problems and RF interference as likely causes, recommending cable repositioning.
Discusses issues with peak modulation control and loudness, potentially caused by poor signal path transient response.
Guides on verifying distortion by checking source material cleanliness and subjective adjustment ranges.
Identifies oscillation in analog output circuitry as the likely cause of whistles detected in stereo reception.
Suggests excessive HF boost or high settings of BAND 4 THRESH/MIX controls as causes for shrill sound.
Explains that this is normal due to processing automatically reducing peak levels of sine waves.
Recommends adjusting the HD LIMIT DR control to match levels between HD and FM channels.
Suggests turning down the HD Final Limiter Drive control and saving the result as a User Preset.
Refers to instructions on how to regain access if the 'All Screens' passcode is forgotten.
Covers common connection problems including UI slowdown, software update issues, and passcode requirements.
Explains how to correct network connection issues by adjusting TCP/IP settings in Windows.
Provides guidance on diagnosing and replacing faulty IC opamps by checking voltage differences.
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