Product Detail

General description. The SAP 2000 Audio Processor is a complete audio signal processing system for FM transmission.The image and professionalism of the broadcaster is defined by its sound quality; hence the obvious importance of the AUDIO PROCESSOR. Multi-band processing is the best method of audio signal processing; SAP 2000 is based on the processing of the audio signal split into THREE BANDS. SAP 2000 allows the integrated control of processing parameters in such a way as to provide your broadcaster with a competitive sound with more punch, continuity, presence and clarity, without pumping or other undesirable effects.

Total control of peak modulation. SAP 2000 offers total control of audio signal levels for FM transmission and can be interfaced to any commonly used transmitter ,anywhere in the world. The SAP 2000 audio processor gives dynamic control over the level of pre-emphasis; intervention is inaudible and produces a clear, open and brilliant sound, better than the original program. SAP 2000 exerts a extremely precise control over peaks, limiting over modulation levels to just 1.5 dB! The stereo encoder of the SAP 2000 uses a digital control circuit to contribute to the excellent performance of the system, featuring high stability and total control of the signal. Both amplitude and phase are adjustable to ensure the best adaptation to any transmission system and the highest level of stereo separation. SAP 2000 helps prevent distortion arising in successive encoders and other transmission components, through the use of bandwidth limiting filters (15 kHz low-pass filters), following the over-modulation compensation circuits.

Concepts of audio processing. It is possible to define average and peak values for any sound source. The average value contains a large part of the signal power and is therefore the most important part of the signal, as opposed to the peak value whose contribution is very low in terms of signal power. Unfortunately, however, the maximum deviation of 75 kHz for FM transmission is determined by the peak value; this constrains the average value to a low level which produces a dull sound. The sound level can be raised by reducing the peak/average ratio; if the peaks can be reduced, the average level can be increased within the modulation constraints. This can be effected by limiting and expanding the signal. Clipping is performed on that part of the signal which cannot be compressed; this operation is always necessary to guarantee that the maximum deviation never exceeds 75 kHz. Clipping does not produce audible effects providing it is done with moderation. If excessive clipping is applied, it can give rise to unpleasant distortion effects.


	SAP 2000 Audio Equipment
	General description. The SAP 2000 Audio Processor is a complete audio signal processing system for FM transmission.The image and professionalism of the broadcaster is defined by its sound quality; hence the obvious importance of the AUDIO PROCESSOR. Multi-band processing is the best method of audio signal processing; SAP 2000 is based on the processing of the audio signal split into THREE BANDS. SAP 2000 allows the integrated control of processing parameters in such a way as to provide your broadcaster with a competitive sound with more punch, continuity, presence and clarity, without pumping or other undesirable effects. Total control of peak modulation. SAP 2000 offers total control of audio signal levels for FM transmission and can be interfaced to any commonly used transmitter ,anywhere in the world. The SAP 2000 audio processor gives dynamic control over the level of pre-emphasis; intervention is inaudible and produces a clear, open and brilliant sound, better than the original program. SAP 2000 exerts a extremely precise control over peaks, limiting over modulation levels to just 1.5 dB! The stereo encoder of the SAP 2000 uses a digital control circuit to contribute to the excellent performance of the system, featuring high stability and total control of the signal. Both amplitude and phase are adjustable to ensure the best adaptation to any transmission system and the highest level of stereo separation. SAP 2000 helps prevent distortion arising in successive encoders and other transmission components, through the use of bandwidth limiting filters (15 kHz low-pass filters), following the over-modulation compensation circuits. Concepts of audio processing. It is possible to define average and peak values for any sound source. The average value contains a large part of the signal power and is therefore the most important part of the signal, as opposed to the peak value whose contribution is very low in terms of signal power. Unfortunately, however, the maximum deviation of 75 kHz for FM transmission is determined by the peak value; this constrains the average value to a low level which produces a dull sound. The sound level can be raised by reducing the peak/average ratio; if the peaks can be reduced, the average level can be increased within the modulation constraints. This can be effected by limiting and expanding the signal. Clipping is performed on that part of the signal which cannot be compressed; this operation is always necessary to guarantee that the maximum deviation never exceeds 75 kHz. Clipping does not produce audible effects providing it is done with moderation. If excessive clipping is applied, it can give rise to unpleasant distortion effects.




	SAP 2000 Audio Equipment

	Technical specifications: Frequency response 30 Hz ÷ 15 kHz ± 0,3 dB (By-pass) AGC Control ± 10 dB Stop Band Rejection > 90 dB above 75 kHz Noise Output noise depends by processing parameters; AGC, threshold, gain and density Greater than 84 dB Din Audio (By-pass) Total distortion @ 1 kHz Than less 0,05% Crosstalk L/R R/L Greater than 60 dB Din Audio (90 dB @ 3 kHz) Audio inputs: Configuration Left and Right Impedance 10 kW electronically balanced Input level - 20 ÷ +10 dBm Common-mode rejection Greater than 50 dB, (30 ÷ 15.000 Hz) Connectors XLR type-female PIN 1 Gnd, PIN 2 Inphase, PIN 3 Return Pin 2 and 3 electronically balanced ATTENTION: All cables should not be more than 3 meters length Audio output: Configuration Left and Right, Flat. Pre-emphasized or De- emphasized (50 o75mS) Impedance 100 kW electronically balanced Input level 0 ÷ +12 dBm Common-mode rejection Greater than 50 dB, (30 ÷ 15.000 Hz) Connectors XLR type-female PIN 1 Gnd, PIN 2 Inphase, PIN 3 Return Pin 2 and 3 electronically balanced Stereo Encoder: Configuration 1 Output with level control Pilot frequency 19 kHz ± 0,001 % max over temp. Pilot injection 4 ÷ 12 % adjustable Distortion @ 1 kHz Less 0,005 % Signal-to-Noise ratio Greater than 92 dB DIN AUDIO Stereo separation Greater than 60 dB 30 ÷ 15 kHz (70 dB @ 1kHz) Crosstalk Main to Sub Greater than 45 dB 30 ÷ 15 kHz (75 dB @ 1kHz) Crosstalk Sub to Main Greater than 40 dB 30 ÷ 15 kHz (75 dB @ 1kHz) 38 kHz subcarrier suppression Greater than 80 dB 76 kHz and sideband suppression Greater than 90 dB Composite output level 0 ÷ + 12 dBm Impedance 50 W Connector BNC floating Max cable length 10 mt. RG58 A/U 100 mt. with MPX DPA 6 distribution amplifier Pilot reference output 1 Vpp sq. wave Impedance 600 W SCA input -14 ÷ + 6 dBm for 10% modulation of main carrier Input impedance 10 kW Connector BNC floating over chassis RDS level -24 ÷ 0 dBm for ± 2 Hz of main carrier Input impedance 10 kW Connector BNC floating over chassis Power requirements and operating temperature: Power supply 87 ÷ 265 VAC 50-60 Hz Power consumption 8 VA Operating temperature 0 ÷ 50 °C Weight and size: Weight 3.8 kg W x H x D (see options) 483 x 44 x 2400 mm

	ITEL S.r.l. TELECOMUNICATIONS AND BROADCASTING SERVICES Via Friuli, 6 - 33074 Fontanafredda (PN) - ITALY Tel. +39 0434 997667 - Fax. +39 0434 997687