R V R GEN CAT EXCITERS Discovery Audio Equipment Owner’s Manual

R V R GEN CAT EXCITERS Discovery Audio Equipment

Product Information

The R.V.R. Discovery is an audio equipment that allows automatic changeover from a satellite main audio channel to a reserve analog audio channel in order to avoid audio black-out. It is designed for systems where one or more satellite receivers are used in combination with an existing terrestrial connection to ensure better signal quality from the satellite and greater reliability from the terrestrial connection. The Discovery features stereo signal presence and signal/noise ratio monitoring. It can be configured and controlled using a PC or the display and keyboard installed on the equipment front panel. The Discovery also has a stereo decoder for decoding MPX to feed audio inputs of external equipment.

Product Usage Instructions

To use the R.V.R. Discovery audio equipment, follow these steps:

1. Connect the primary power source to the equipment.
2. Ensure that the environmental working temperature is within the specified range.
3. If desired, download or load operative parameters using a PC or modify them using the display and keyboard on the front panel.
4. If necessary, lock the operative configuration of Discovery using a PC.
5. Set the internal jumpers to select the channel to transmit in case of fuse breakup or sudden lack of feeding.
6. If required, decode MPX by connecting the audio inputs (Left & Right) of external equipment to the stereo decoder.

Technical Specifications

• Automatically changing over < MP e 2 Stereo channel
• Reset times and operation thresholds program- mable
• All operative parameters downloaded/loaded b PC or changed by display and keyboard
• Monitoring circuit “Fault tolerance” concept.

Features

• The R.V.R. Discovery allows automatically changing over from a satellite main audio channel to a reserve analog audio channel in order to avoid audio black-out.
• Discovery is extremely useful for those systems where one or more satellite receivers are used combined with an already existing terrestial connection, so that guarantee the better quality of the signal deriving from the satellite and the greater reliability of the terrestrial connection.
• It is possible to change over, automatically according to the priorities entered, up to four audio channels, two of which composite (MPX) and two stereo. The automatic change over is based on the detection of the functionality of selected channel.
• Operation times for the several detection modes, reset times and oper-ation thresholds may be programmed.
• For all channels are available two detection modes: a hardware contact (external command) and a level control.
• For MPX channels there are also the detection modes related at the stereo signal presence and signal/noise ratio.
• All operative parameters may be downloaded/loaded by PC or changed by display and keyboard installed on equipment fronf panel.
• It is possible to lock the operative configuration of Discovery by PC; in such situation, data may only be examined, but noy changed.
• The monitoring circuit of Discovery has been designed with the always-present “Fault tollerance” concept; it is possible therefore to select, through the setting of internal jumpers, the channel to transmit in case of breakup of fuse or sudden lack of the feeding.
• The presence of stereo decoder allows decoding MPX in order to feed the audio inputs (Left & Right) of external equipment.

Technical specifications

GENERALS
User Interface| LCD – 2 x  40
Primary Power| 115 – 230 VAC  ±15%
Phisical Dimensions (W x H x D)| 483 x 44 x 243  mm
Weigh| 4,5 kg
Environmental working temperature| -10 to + 50  °C
TECHNICAL SPECIFICATIONS
Microprocessor| 68HC11F1
Processor Clock Frequency| 8Mhz
Watch-Dog Protection| Yes
AC Fuse| 1AT
PWM Converters Operating Frequency| 75KHz
DC Voltage| 24Vdc –10%+30%
DC Fuse| 2AT
Power Consumption| 10VA
Electromechanical Contact Current| 15mA
CONNECTORS DESCRIPTION
RS232 programming| “DB9 female” type connector, on the front panel
Telemetry| “DB15 female” type connector, includes status signals (Ch1, Ch2, MPX1, MPX2) and “Switch” input
Stereo input| 2+2  XLR female
MPX input| 3 BNC
Stereo output| 2  XLR male
MPX output| 3 BNC
AF CHARACTERISTICS STEREO INPUT
Stereo input impedance| 600 Ohm
Amplitude response of stereo input| ±0.1 dB, 20 Hz ÷ 20 KHz
Stereo input level| -12 / 0 +12 dBm internally selectable
Total harmonics distortion of stereo input| <0.02%
AF CHARACTERISTICS MPX INPUT
MPX input impedance| >10 Kohm
Amplitude response of stereo input| ±0.1 dB, 20 Hz ÷ 15 KHz
Stereo input level| -12 / 0 +12 dBm internally selectable
Total harmonics distortion of stereo input| <0.02%
AF CHARACTERISTICS STEREO OUTPUT
Amplitude response of stereo output| ±0.1 dB, 20 Hz ÷ 20 KHz
Stereo output level| -12 / 0 +12 dBm internally selectable
Total harmonics distortion of stereo output| <0.02%
AF CHARACTERISTICS MPX OUTPUT
Amplitude response of MPX output| ±0.5 dB, 20 Hz ÷ 15 KHz
MPX output level| -12 / 0 +12 dBm internally selectable
Total harmonics distortion of MPX output| <0.3%
Stereo separation| >40 dB

• All pictures are RVR’s property and they are only indicative and not binding.
• The pictures can be modified without notice.
• These are general specifications.
• They show typical values and are subject to change without notice.
• RVR Elettronica S.p.A.
• Phone +39 051 6010506
• Fax +39 051 6011104
• e-mail:info@rvr.it
• Web: http://www.rvr.it

References

• R.V.R. Elettronica - Broadcast Systems

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