Wohler AMP2-SDA/APP User Manual Download Page 11 | Manualshive

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© 2004 Wohler Technologies Inc. ALL rights reserved

11

AMP2-SDA/AVU

and

AMP2-SDA/APP

User Manual P/N

821576

Rev-

A

Section 2:

Operation

Figure-2a: Front Panel Features

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Summary of Contents for AMP2-SDA/APP

Page 1: ...PCB 919117 Description PPM Meter Specifications and Level Threshold Settings VU Meter Specifications and Level Threshold Adjustment AMP2 SDA AVU and AMP2 SDA APP Interconnect Block Diagram AMP2 SDA AVU and AMP2 SDA APP 2U Digital Audio Speaker Monitor With SDI Input and Output on BNC AES Input on BNC AES Out from SDI on BNC Two Analog Inputs on XLR Two Selected Analog Stereo Outputs on XLR Two Mec...

Page 2: ... 650 589 5676 Fax 650 589 1355 web www wohler com e mail support wohler com Congratulations on your selection of a Wohler Technologies AMP2 SDA AVU or AMP2 SDA APP audio monitor unit We are confident it represents the best performance and value available and we guarantee your satisfaction with it If you have questions or comments you may contact us at All rights reserved Copyright held by Wohler T...

Page 3: ...ALL rights reserved 3 AMP2 SDA AVU and AMP2 SDA APP User Manual P N 821576 Rev A Sect 1 General Features and Specifications General Features and Specifications Description Features Applications Specifications Installation Section 1 ...

Page 4: ... channels 1 2 or 3 4 and a choice of the selected digital source or the analog source inputs Two LEDs indicate the presence and error status of the selected AES and or SDI signals entering the unit The rear panel features an SDI input and loop through on BNC connectors an AES input on an unbalanced BNC connector an AES output converted from the SDI input on a BNC connector analog inputs on two bal...

Page 5: ...ach Side 4Ω Ω Ω Ω Ω RMS Bass 4Ω Ω Ω Ω Ω FrequencyResponse SixthOctave InputLevelforMaximum Output VolumeFullOn HumandNoise analog Distortion Electrical Distortion Acoustic InputOverload ConvertedAnalogOutS N ConvertedAnalogOutTHD MagneticShielding PowerConsumption AverageMaximum ACMainsInput SDI BNC AES BNC Analog XLR XLR 40KΩ balanced BNC 75 Ω unbal XLR 110 Ω bal 104 dB SPL 14 W transient 10 W co...

Page 6: ...avy the chassis is securely attached to the front panel at eight points along its surface not just at the four corners of the chassis ears This feature will reduce or eliminate rear bracing requirements in many mobile portable applications The weight of internal components is distributed fairly evenly around the unit Audio Connections Connection of the audio feeds is straightforward Please refer t...

Page 7: ...ies Inc ALL rights reserved 7 AMP2 SDA AVU and AMP2 SDA APP User Manual P N 821576 Rev A Operation Front Panel Features Rear Panel Features Audio Amplifier and Speaker Configuration Balance Control Characteristics Section 2 ...

Page 8: ... selected by the AES SDI Source Select Switch Item 6 SDI Subgroup Select Switch 1 or 2 This 2 position toggle switch allows the operator to choose whether the unit will monitor Subgroup 1 or Subgroup 2 of the SDI data stream when the AES SDI Source Select Switch Item 6 is set to SDI Subgroup selections 1 and 2 are derived from Group I D 1 as follows Subgroup 1 Channels 1 and 2 Subgroup 2 Channels ...

Page 9: ... 2004 Wohler Technologies Inc ALL rights reserved 9 AMP2 SDA AVU and AMP2 SDA APP User Manual P N 821576 Rev A Section 2 Operation Figure 2a Front Panel Features ...

Page 10: ...r GREEN RED LED AES glows GREEN as long as a valid AES EBU digital datastream is being received It glows RED to indicate errors By setting a rear panel DIP switch two types of error detection are available Reception Errors errors in reception of data or no data stream at all Reception and Data Errors errors in reception and data errors identified by the sending device possibly invalid See the AES ...

Page 11: ... 2004 Wohler Technologies Inc ALL rights reserved 11 AMP2 SDA AVU and AMP2 SDA APP User Manual P N 821576 Rev A Section 2 Operation Figure 2a Front Panel Features ...

Page 12: ...DIP Switch This 4 position DIP switch is used to set the termination characteristics for the AES input Item D and select the AES signal error indication type AES Input Termination In the event that the AES input signal is fed to downstream equipment then DIP switch Section S2 must be placed in the Unterminated UP position If there is no downstream equipment connected then Section S2 must be placed...

Page 13: ... 2004 Wohler Technologies Inc ALL rights reserved 13 AMP2 SDA AVU and AMP2 SDA APP User Manual P N 821576 Rev A Section 2 Operation Figure 2b Rear Panel Features ...

Page 14: ...he left and right speakers and level meters The left connector outputs the left channel or channel A and the right outputs the right channel or channel B Both connectors are configured for low impedance connections and the output signals are not affected by the volume balance controls or headphone mute These connectors continually output the selected digital source even when the analog inputs are ...

Page 15: ... 2004 Wohler Technologies Inc ALL rights reserved 15 AMP2 SDA AVU and AMP2 SDA APP User Manual P N 821576 Rev A Section 2 Operation Figure 2b Rear Panel Features ...

Page 16: ...stics The balance control attenuates the signal from the source so that the left and right bass frequencies summed together and reproduced in the woofer channel will also respond to the balance control Example If an audio signal of a voice speaking English is fed to the left A input and a voice speaking Spanish is fed to the right B input then the left speaker channel will reproduce the midrange a...

Page 17: ...Information General Technical Observations SDI to AES Converter Module PCB 919096 AES to Analog Converter Module PCB 919117 Description PPM Level Meter Specifications and Level Threshold Settings VU Level Meter Specifications and Level Threshold Adjustment AMP2 SDA AVU and AMP2 SDA APP Interconnect Block Diagram Section 3 ...

Page 18: ...e input stage and before the volume control section The signal pick off for the headphones is after the volume and balance controls Speaker muting is controlled by circuitry that senses connection of headphones to the jack The power amps are attached to an aluminum heatsink plate which is also connected to the circuit common for these devices The heatsink plate forms an operational module separate...

Page 19: ... 2 first subgroup or channels 3 and 4 second subgroup from SDI Group ID 1 are demuxed before being input to the AES to analog conversion module 919117 Access to SDI Group ID 2 3 and 4 is optional and should be specified at time of order SDI to AES Converter Module PCB 919096 919096 Specifications Inputcharacteristics Receiver type Sensitivityperformance SDI input level Inputformats Audiosamplingra...

Page 20: ...C9 Buffer amps provide balanced left and right channel outputs as well as single ended outputs Gain calibration the analog level which corresponds to a given digital value is settable via a DIP switch The default factory setting is 20 dB below full code digital zero to equal 4 dbu 0 775V The other three settings possible are for 18 dBfs 0 dBu 9 dBfs 6 dBu and 20 dBfs 8 dBu See page 12 for DIP swit...

Page 21: ...pecifications and Level Threshold Settings LevelMeterType LevelMeterScale LevelMeterThreshold LevelMeterDynamics Mechanical StandardVU 0 to 8 dBv factory set to 4 dBv trimpot adjustable internal VU fullANSI LevelMeterType LevelMeterScale LevelMeterThreshold LevelMeterDynamics Mechanical Specify BBC 1 to 7 or EBU type 1 and 2 specified when ordered 6 0 4 or 8 dBv DIP switch selectable internal PPM ...

Page 22: ... 2004 Wohler Technologies Inc ALL rights reserved 22 AMP2 SDA AVU and AMP2 SDA APP User Manual P N 821576 Rev A AMP2 SDA AVU and AMP2 SDA APP Interconnect Block Diagram Section3 TechnicalInformation ...

Page 23: ...d AMP2 SDA APP User Manual P N 821576 Rev A NOTE PCB layout and schematic support documentation is available upon request Wohler Technologies Inc 713 Grandview Drive South San Francisco CA 94080 650 589 5676 Fax 650 589 1355 web www wohler com e mail support wohler com ...

Page 24: ... ALL rights reserved 24 AMP2 SDA AVU and AMP2 SDA APP User Manual P N 821576 Rev A Wohler Technologies Inc 713 Grandview Drive South San Francisco CA 94080 650 589 5676 Fax 650 589 1355 web www wohler com e mail support wohler com ...

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