How to eliminate RFI, hum, clicks, or buzzes in my Orban Processor?
These issues often stem from grounding problems. Review the grounding information. If using analog connections, switching to digital connections can almost certainly eliminate the RFI. Repositioning the unit or its input and output cables may also reduce RF interference. Ensure the composite output is not receiving the MONITOR signal to avoid ground loop noise.
What to do if I hear audible distortion on-air using an Orban Processor?
First, ensure the problem is consistent across multiple receivers and locations to rule out multipath distortion. Verify the source material at the 5500's audio inputs is clean. Be mindful that extreme settings on subjective adjustments can cause distortion. The peak input level must not exceed +27 dBu to prevent the 5500's A/D converter from clipping. If you're using the 5500’s stereo enhancer, this can exaggerate multipath distortion in high multipath environments. If the 5500 is in stand-alone stereo encoder mode, you may be overdriving its left/right protection limiter and/or composite limiter.
Why is there audible noise on-air when using my Orban 5500 Processor?
Excessive compression can exaggerate noise in the source material. The overall noise performance is often limited by the analog-to-digital converter's overload-to-noise ratio, so drive the 5500 with professional levels (more than 0 dBu reference level) to achieve adequately low noise. If using an analog studio-to-transmitter link (STL), compression in the 5500 can amplify STL noise.
Why are my on-air levels unexpectedly quiet using my Orban Processor?
The ITU412 multiplex power controller may have been turned on accidentally. The 5500 may be in stand-alone stereo encoder mode, which is determined by the active on-air preset. Also, the 5500 may not be controlling peak modulation as desired.
How to troubleshoot a whistle on-air, especially in stereo, with my Orban Processor?
Check the analog or digital outputs with a spectrum analyzer to see if the spurious tone can be detected there. If it appears at both outputs, it is probably an input problem. If it only appears at the analog output, then it is likely a problem with the left/right D/A converter or other analog circuitry. If it appears only when you use the composite output, then it is likely a problem in the composite D/A converter or output amplifiers. Power supply oscillation, STL problems, or exciter problems can also be the cause.
What can cause poor peak modulation control in Orban Processors?
Check whether the final clipper is active. Also, make sure that the output is not receiving the MONITOR signal.
Why won't my Orban 5500 Processor pass line-up tones at 100% modulation?
Sine waves have a very low peak-to-average ratio by comparison to program material. The 5500 can generate test tones itself and can also be put into Bypass mode (locally or by remote control) to enable it to pass externally generated tones at any desired level.
Why is there an unexpected delay between the program feed and the on-air signal from my Orban Processor?
The diversity delay may have been accidentally applied to the output you are using to drive your transmitter.
What to do if the system receiving my Orban 5500's digital output will not lock?
Be sure that the 5500’s output sample rate is set match the sample rate that the driven system expects. Also, be sure that the 5500’s output FORMAT (AES3 or SPDIF) is set to match the standard expected by the driven system.
What does a “Communications Board Error” message mean on my Orban Processor?
This can be caused by applying an AES3, AES3id, AES11, or AES11id to the 10 MHz/wordclock input.
General| Category | Audio Processor |
|---|---|
| Channels | Stereo |
| Dynamic Range | >110 dB |
| Power Supply | 100-240V AC, 50/60 Hz |
| A/D Conversion | 24-bit |
| D/A Conversion | 24-bit |
| Input Types | Analog, AES/EBU |
| Output Types | Analog, AES/EBU |
| Presets | User-defined presets |
| Sample Rate | 44.1 kHz |
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