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Related Manuals for Crystal Vision Indigo AADA-STM-1
Summary of Contents for Crystal Vision Indigo AADA-STM-1
- Page 1 AADA-STM-1 Dual stereo to mono audio distribution amplifier Crystal Vision Ltd., Lion Technology Park, Station Road East, Whittlesford, Cambridge, CB22 4WL, England. Tel: +44(0) 1223 497049 Fax: +44(0) 1223 497059 sales@crystalvision.tv www.crystalvision.tv...
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Page 2: Table Of Contents
Crystal Vision AADA-STM-1 User Manual Contents Introduction Card edge operation Overvoltage detection level Silence detection Gain Hardware installation Rear module signal I/O Using unbalanced audio General purpose interface Configuration Linking audio channels together Matching different operating levels Overvoltage LED inhibit... -
Page 3: Introduction
Crystal Vision Introduction 1 Introduction The AADA-STM-1 is a dual stereo to mono audio distribution amplifier with individually balanced floating outputs. It has card edge control and can be configured in a variety of input/output configurations. There are four separate audio distribution amplifiers each with an electronically balanced input and four floating outputs. - Page 4 Crystal Vision Introduction Two 3.5mm jacks are provided for local audio monitoring using headphones. The main features are as follows: • Dual stereo to mono conversion audio distribution amplifier with three configuration modes • *Suitable for level-matching international operating levels of +18/+24/+28dBu to European levels (+18/+24dBu) •...
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Page 5: Card Edge Operation
Crystal Vision Card edge operation 2 Card edge operation Once the start-up initialisation procedure is complete, the AADA-STM-1 can be controlled or configured from the card edge controls. The front card-edge provides power rail monitoring, channel gain adjustment, silence threshold, silence time, overvoltage level and two analogue audio monitoring outputs. -
Page 6: Silence Detection
Crystal Vision Card edge operation Silence detection A channel is only considered to be silent if its audio level remains below a certain threshold level for longer than a given time (detection delay). Silence detection level Silence detection level labelled Sil is adjustable from the front of the board. It is factory set to an output level of –30dBu. -
Page 7: Hardware Installation
The AADA-STM-1 is used with the RM17 and RM37 single slot rear connectors in all Crystal Vision frames. The 4U Indigo frame will house up to 24 modules and four power supplies. The 2U Indigo frame will house up to 12 modules and dual power supplies. The 1U Indigo frame will house 6 modules and a single power supply. - Page 8 Crystal Vision Hardware installation Audio out - 44 pin high density D-Type connector (cable has plug on it) Signal Desc Signal Desc Signal Desc Audio Out Audio Out OP1B- OP1A+ Group 1 Group 1 Audio Out Audio Out Audio Out...
- Page 9 Crystal Vision Hardware installation Audio In Pin number Function Comments IP-L1+ Stereo 1 Left input IP-L1- Input_LO Screen for input 1 IP-R1+ Stereo 1 Right input IP-R1- Input_LO Screen for input 1 No connection IP-L2+ Stereo 2 Left input IP-L2-...
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Page 10: Using Unbalanced Audio
Crystal Vision Hardware installation 3.2 Using unbalanced audio As the AADA-STM-1 outputs are floating, it is possible to obtain up to 16 unbalanced audio outputs by wiring the RM17 or RM37 in the correct manner. An unbalanced output may be obtained by using either the +ve or –ve phase of the audio signal pair. - Page 11 Crystal Vision Hardware installation 4U frame GPI Connections GPI lines ‘a’ to ‘f’ of each card connect to one of eight rear remote connectors as follows: Slot no. ‘a’ pin ‘b’ pin ‘c’ pin ‘d’ pin ‘e’ pin ‘f’ pin...
- Page 12 Crystal Vision Hardware installation 2U frame GPI Connections GPI lines ‘a’ to ‘f’ of each card connect to one of four rear remote connectors as follows: Slot no. ‘a’ pin ‘b’ pin ‘c’ pin ‘d’ pin ‘e’ pin ‘f’ pin...
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Page 13: Configuration
Crystal Vision Hardware installation Indigo DT desk top box GPI connections GPI lines ‘a’ to ‘f’ of each card connect to the rear remote connector as follows: Slot no. ‘a’ pin ‘b’ pin ‘c’ pin ‘d’ pin ‘e’ pin ‘f’ pin... -
Page 14: Matching Different Operating Levels
Crystal Vision Hardware installation The table on this page shows the jumper positions required for each mode and the implications for LEDs and gain adjust controls. The link settings required for each mode are as follows: Mode Comments 2 Channel... -
Page 15: Overvoltage Led Inhibit
Crystal Vision Hardware installation Note: Moving the jumper links PL8 to PL11 from 2-3 position to 1-2 position will increase the audio (output) gain by 6dB for output audio groups 1 to 4 respectively. The maximum input signal level is +28dBu and the maximum possible output level is +25dBu. -
Page 16: Trouble Shooting
Crystal Vision Trouble shooting 4 Trouble shooting The front edge of the card provides useful power rail monitoring, in addition to card edge controls and two headphone monitoring outputs. AADA-STM-1 front edge view The bottom green LED indicates good +/- 18 Volt power rails when lit and the upper green LED indicates a good +5 Volt rail when lit. -
Page 17: Specification
Crystal Vision Specification 5 Specification General Dimensions: 100mm x 266mm module with DIN 41612 connector Weight: 175g Power consumption: 8 W nominal, 12 W max Audio inputs Number and type: 4 mono, electronically balanced high impedance input (>20kΩ) Maximum input level:... - Page 18 Crystal Vision Specification Number: 4 (one per output audio group) Duration limit: 1 second to 120 seconds in 15 steps of 8 seconds Overvoltage detectors Number: 4 (one per output audio group) Detect level: +6dBu to +25dBu at output - adjustable at card edge (factory set to...
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