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© 2004 Wohler Technologies Inc. ALL rights reserved

13

AMP2-VSD and AMP2-VSDA

User Manual P/N

821581

Rev-

B

Section 2:

Operation

Figure-2b: Rear Panel Features

A

B

G

H

F

I

J

K

C

D

E

SERIAL

NUMBER

100-240 VAC

50/60 Hz

LABEL ON SIDE

SEE POWER SUPPLY

UNDERWRITERS LABS

INTERNAL POWER

OUT

SDI

SDI

AES/EBU PORTS

SDI

AES

OUT-FROM

IN 1

AES

AES IN 1

OUT-FROM

2

1
23

4

IN 2

AES

TERM 1

LO

CALIB.

1
2

AES

1

HI

+8

+6

+4

GAIN

-9

-18

0

-20

-20

AES IN 2

dB

DIGITAL

GAIN CALIB

dBFS

ANALOG IN

4

3

2

1

6

5

DIGITAL SOURCE

SELECTED

ANALOG OUT FROM

IN

1
2

3

456

LO

LO

LO

HI

2

HI

3

HI

4

AMP2-VSDA

253358

CH. 1

CH. 2

SEL. ANALOG OUT

CH B (R)

CH A (L)

CH. 3

CH. 4

AMP2-VSDA

GAIN CALIB

SERIAL

NUMBER

100-240 VAC

50/60 Hz

LABEL ON SIDE

SEE POWER SUPPLY

UNDERWRITERS LABS

INTERNAL POWER

AES/EBU PORTS

OUT-FROM

IN 1

SDI

AES

AES

IN 2

OUT-FROM

SDI

OUT

SDI

AES

TERM 1

1
23

4

2

AES

CALIB.

1
2

GAIN

1

HI

LO

+8

+6

+4

dB

0

-18

-9

-20

-20

dBFS

AES IN 2

AES IN 1

DIGITAL

CH A (L)

SEL. ANALOG OUT

DIGITAL SOURCE

SELECTED

ANALOG OUT FROM

IN

LO

4

HI

2

LO

HI

3

LO

HI

AMP2-VSD

253536

4

3

2

1

6

5

6

2

1

5

34

CH B (R)

A

B

GH

F

I

J

CD

E

AMP2-VSD

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Содержание AMP2-VSD

Страница 1: ...r Panel 6 Position DIP Switch Settings Level Meter Internal 10 Position DIP Switch Settings Level Meter DIP Switch Locations Level Meter Alternative Scales Level Meter Phase Correlation Featrure AMP2 VSD Interconnect Block Diagram AMP2 VSDA Interconnect Block Diagram AMP2 VSD and AMP2 VSDA 2U Digital Audio Speaker Monitor With SDI Input and Output on BNC Two AES Inputs on BNC and XLR Two AES Outpu...

Страница 2: ...eing walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus 11 Only use attachments accessories specified by the manufacturer 12 Use only with the cart stand tripod bracket or table specified by the manufacturer or sold with the apparatus When a cart is used use caution when moving the cart apparatus combination to avoid injury from tip ...

Страница 3: ...s and Specifications Description Features Applications Specifications Installation Section 1 Congratulations on your selection of a Wohler Technologies AMP2 VSD or AMP2 VSDA 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 ...

Страница 4: ...ion 53 segment LED bargraph level meters Both models process digital AES and SDI audio signals while the AMP2 VSDA is also capable of processing up to four analog audio signals Two banks of four buttons on the front panel are used to independently assign from one to four summed channels to each of the two left and right speaker channels AES signal status is indicated by two bi color red green LEDs...

Страница 5: ...on AverageMaximum ACMainsInput SDI BNC AES BNC XLR Analog XLR XLR 70K Ω bal AMP2 VSDAOnly BNC 75 Ω unbal XLR 110 Ω bal 104 dB SPL 14 W transient 10 W continuous 35 W transient 25 W continuous 80 Hz 16 kHz 5 dB 10 dB 40 Hz 20 kHZ 0 dBv balanced 10 dB unbalanced Better than 68 dB below full output Less than 0 15 at any level below input threshold 6 or less at worst case frequencies above 120 Hz incl...

Страница 6: ...y be required to stop vibrations external to the unit Mechanical Bracing Even though the unit is fairly heavy 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 fairl...

Страница 7: ...ologies Inc ALL rights reserved 7 AMP2 VSD and AMP2 VSDA User Manual P N 821581 Rev B Operation Front Panel Features Rear Panel Features Audio Amplifier and Speaker Configuration Balance Control Characteristics Section 2 ...

Страница 8: ...they are selected Operation for channel selection for each bank of four buttons is as follows Single Channel Select Press and release a single channel button to select that channel and deselect any previous selection Pressing and releasing the selected channel button again will deselect it Multi Channel Select Summing Press and hold down a desired channel button then press other channel buttons to...

Страница 9: ... 2004 Wohler Technologies Inc ALL rights reserved 9 AMP2 VSD and AMP2 VSDA User Manual P N 821581 Rev B Section 2 Operation Figure 2a Front Panel Features AMP2 VSDA AMP2 VSD ...

Страница 10: ... data has been tagged as inappropriate for conversion to analog by having the validity bit set These LEDs function whether or not the AES digital signals are selected for monitoring through the unit SDI Status LED This bi color GREEN RED LED labeled SDI glows GREEN as long as a valid SDI digital datastream is being received It glows RED if TSR errors are present in the signal If there is no SDI si...

Страница 11: ... 2004 Wohler Technologies Inc ALL rights reserved 11 AMP2 VSD and AMP2 VSDA User Manual P N 821581 Rev B Section 2 Operation Figure 2a Front Panel Features AMP2 VSDA AMP2 VSD ...

Страница 12: ...ed for an unbalanced 75 Ω connection The unit monitors sub group 1 channels 1 2 and sub group 2 channels 3 4 of SDI Group ID 1 Note that the unit will monitor the SDI input only when the Analog Digital Source Select Switch Item 7 page 8 is set to DIGITAL and the AES SDI Digital Source Select Switch Item 13 page 10 is set to SDI The SDI OUT loop through connector outputs a reclocked regenerated cop...

Страница 13: ...AL GAIN CALIB dBFS ANALOG IN 4 3 2 1 6 5 DIGITAL SOURCE SELECTED ANALOG OUT FROM IN 1 2 3 4 5 6 LO LO LO HI 2 HI 3 HI 4 AMP2 VSDA 253358 CH 1 CH 2 SEL ANALOG OUT CH B R CH A L CH 3 CH 4 AMP2 VSDA GAIN CALIB SERIAL NUMBER 100 240 VAC 50 60 Hz LABEL ON SIDE SEE POWER SUPPLY UNDERWRITERS LABS INTERNAL POWER AES EBU PORTS OUT FROM IN 1 SDI AES AES IN 2 OUT FROM SDI OUT SDI AES TERM 1 1 2 3 4 2 AES CAL...

Страница 14: ... silk screened chart on the rear panel or the diagram below for settings Converted Analog Out Connectors 1 4 These four Phoenix connectors output Analog signals converted from the selected digital inputs but not the analog inputs These ouputs are not affected by the position of the Analog Digital Source Select Switch Item 7 page 8 These 3 pin male Phoenix connectors are configured for a balanced l...

Страница 15: ...AL GAIN CALIB dBFS ANALOG IN 4 3 2 1 6 5 DIGITAL SOURCE SELECTED ANALOG OUT FROM IN 1 2 3 4 5 6 LO LO LO HI 2 HI 3 HI 4 AMP2 VSDA 253358 CH 1 CH 2 SEL ANALOG OUT CH B R CH A L CH 3 CH 4 AMP2 VSDA GAIN CALIB SERIAL NUMBER 100 240 VAC 50 60 Hz LABEL ON SIDE SEE POWER SUPPLY UNDERWRITERS LABS INTERNAL POWER AES EBU PORTS OUT FROM IN 1 SDI AES AES IN 2 OUT FROM SDI OUT SDI AES TERM 1 1 2 3 4 2 AES CAL...

Страница 16: ...cs 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 and ...

Страница 17: ...vations SDI to AES Converter Module PCB 919096 AES to Analog Converter Module PCB 919050 AES Digital Gain Fine Adjustment 919050 AES Error Jumper Locations 919050 Level Meter Rear Panel 6 Position DIP Switch Settings Level Meter Internal 10 Position DIP Switch Settings AMP2 VSD Interconnect Block Diagram AMP2 VSDA Interconnect Block Diagram Section 3 ...

Страница 18: ...put 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 fro...

Страница 19: ...irst subgroup and channels 3 and 4 second subgroup from SDI Group ID 1 are demuxed before being input to the AES to analog conversion module 919050 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 Audiosamplingrate ...

Страница 20: ... connectors and balanced 110 Ω XLR connectors This module also features a four channel balanced analog line level output which can be configured with unbalanced 75 Ω BNC connectors or balanced 110 Ω Phoenix or XLR connectors AES to Analog Converter Module PCB 919050 919050 Specifications Inputformats Digital to AnalogConversion Samplingrate Termination Analog out of digital source S N THD full out...

Страница 21: ...ge 14 Be sure to make measurement of the FULL balanced output NOT just between one of the outputs and ground 5 Locate trim pots P1 P2 P3 and P4 see Figure 3a below Adjust P4 channel 1 through P1 channel 4 for the desired analog level corresponding to the digital signal amplitude being supplied to the unit For example if your house Analog Digital correspondence is for a 18 dBfs digital level to cor...

Страница 22: ... AMP2 VSDA User Manual P N 821581 Rev B AES Error Jumper Locations 919050 To disable indication of faulty AES data and leave only indi cation of faulty reception place jumpers on both H14 and H18 See Item 11 page 10 for more information Section3 TechnicalInformation ...

Страница 23: ... displayed on the LED bargraphs Factory setting is 4 dB See DIP switch diagram below for settings Bargraph Display Mode DIP switch sections 4 and 5 determine how peak levels are displayed for the associated meters on the front panel There are four possible settings VU Only VU PPM Floating Segment PPM Only and PPM PPM Floating Segment The VU Only selection has a VU floating segment when a Peak Hold...

Страница 24: ...on Rise Time is 10 ms 2 dB Return Fall Time is 2 8 seconds 24 dB Integration Rise Time is 5 ms 2 dB Return Fall Time is 1 5 seconds 20 dB Integration Rise Time is a single sample Return Fall Time is 1 5 seconds 20 dB IEC268 10 Type 1 IEC268 10 Type 2 DIN 4506 Single Sample This 10 position DIP switch is accessed by removing the top cover of the AMP unit and is located on the 919174 PCB the same PC...

Страница 25: ...AMP2 VSD and AMP2 VSDA User Manual P N 821581 Rev B Level Meter Internal 10 Position DIP Switch Module see page 24 Level Meter Rear Panel 6 Position DIP Switch Module see page 23 Level Meter DIP Switch Locations 919174 PCB Section 3 Technical Information ...

Страница 26: ...g Scale standard Since it is sometimes helpful to observe phase relationships between two signals being monitored a Phase Correlation feature can be implemented within the lower section of an existing bargraph pair in the 53 segment LED bargraph level meters used in the AMP2 units This feature may be turned ON and OFF by setting the Level Meter Internal 10 Position DIP Swich module page 24 Below i...

Страница 27: ...h Phase Indication PCB 919084 Headphone Volume Balance Woofer Channel Speaker Left Channel Speaker L 3 4 2 1 CONVERTED ANALOG OUT 1 4 D A 2 Converter Phase Indication Right Channel Speaker R AES IN 1 AES IN 2 AES Status LEDs AES 2 Rev A 06 30 04 Digital Input Impedances BNC 75 Ω Unbalanced XLR F 110 Ω Balanced AES BAL IN 919111 919202 PCB RIGHT Speaker Source Select 919202 PCB 8 9 10 2 3 7 5 6 4 1...

Страница 28: ...Speaker L 3 4 2 1 CONVERTED ANALOG OUT 1 4 4 3 2 1 1 A D D A 4 3 D A D A 2 D A 2 Converter 2 4 Switch PCB Plugin Module 919083 Analog Digital Source Select ANALOG DIGITAL Phase Indication Right Channel Speaker R AES IN 1 AES IN 2 ANALOG INPUT 1 4 1 2 3 4 AES Status LEDs AES 2 Rev A 06 28 04 Digital Input Impedances BNC 75 Ω Unbalanced XLR F 110 Ω Balanced Analog Input Impedances XLR F 70K Ω Balanc...

Страница 29: ... 2004 Wohler Technologies Inc ALL rights reserved 29 AMP2 VSD and AMP2 VSDA User Manual P N 821581 Rev B NOTE PCB layout and schematic support documentation is available upon request ...

Страница 30: ... B Wohler Technologies Inc 31055 Huntwood Avenue Hayward CA 94544 1 888 596 4537 Fax 510 870 0811 web www wohler com e mail support wohler com Wohler Technologies Inc 31055 Huntwood Avenue Hayward CA 94544 Phone 510 870 0810 Fax 510 870 0811 US Toll Free 1 888 596 4537 www wohler com support wohler com ...

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