VAMP AC-3 - Wohler Technologies
Contents
1. BS E Ele uogeopul E m bees TEAM BB B eseud S S S B ee S S _ savosov S BS BS SI Ei B l Lanneg ojpny B S E 9 1 sjeuueyo SE Be t 3 Ei Sei Bl sudeibieg aW oi E E S 9 S D Z L VAMP AC3 User Manual P N 821522 Rev B W Wohler 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 52 2002 Wohler Technologies Inc ALL rights reserved2. 253811 01 IN LOOP VAMP AC3 Rear Panel Units are certified to meet at time of manufacture all currently applicable product safety and EMC requirements such as those of UL and CE 0 dbV ref 0 775V RMS Features and specifications subject to improvement without notice W Wohler 2002 Wohler Technologies Inc ALL rights reserved 5 VAMP AG3 User Manual P N 821522 Rev B 6 2002 Wohler Technologies Inc ALL rights reserved VAMP AC3 User Manual P N 821522 Rev B Operation Installation Front Panel Features Rear Panel Features 2002 Wohler Technologies Inc ALL rights reserved 7 VAMP AC3 User Manual P N 821522 Rev B Section 2 Operation Installation U O 2 8 9 84 lt S lt m 2 U O Figure 2a VAMP AC3 Rack Mount Dimensions 8 2002 Wohler Technologies Inc ALL rights reserved VAMP AC3 User Manual P N 821522 Rev B Section 2 Operation Installation Unpacking Unpack the VAMP AC3 from the shipping container and inspect all articles for shipping damage If you find any damage notify the shipping carrier immediately for claims adjustments Compare the shipping box contents to the packing slip Contact a Wohler sales representative if there are any unexplained shortages Power Requirements The VAMP AC3 is equipped with a world standard power supply that is capable of operating on 90 264 VAC 50 60 Hz Power consumption is 60 watts maximum The green Power LED in the front panel
3. 3 Dolby Digital programming The built in color LCD screen offers simple confidence monitoring of NTSC or PAL video and has front panel controls for brightness chroma tint NTSC only and contrast The video section automatically detects and indicates the presence of NTSC or PAL signals The VAMP AC3 accepts AC 3 Dolby Digital and or AES EBU PCM audio input signals providing capabilities to handle monitoring requirements throughout the facility Indicator LEDs are provided on the front panel to identify the selected source as being AC 3 or AES A toggle switch and LED are also provided to indicate and allow selection beteween two AC 3 Pro 16 signals if they are present High resolution wide range LED bargraph level meters are provided for all six channels The 53 bicolor segments spanning a range of 65 or 90 dB simultaneously display signal levels according to both the PPM and VU standards An adjustable duration hold of the peak PPM value may also be displayed as a special option Bargraph brightness is adjustable via a trim pot Both Left Right and Front Surround Phase Polarity LED indicators are provided to alert of possible phase cancellation from mixdown in any likely playback situation To isolate possible faults rotary switches let the operator route any one or pair of inputs to left and right speaker channels for acoustic monitoring A toggle switch is provided which mixes all six channels down to two for listening to all c
4. the ALL position a stereo mixdown of the five full channels is applied to the speaker amps the LFE channel is excluded and the left and right Speaker Select switches Item 3 will be disabled the Selector Disabled Indicator LEDs Item 2 will also glow red When in the SELECTED position channel selection defaults to the left and right Speaker Select switches the Selector Disabled Indicator LEDs will be unlit Pro 16 Select and Indicator 2 Position Toggle Switch Amber LED In the event that you are processing two different Dolby Digital Pro 16 data streams it is possible to select between the two with this toggle switch 1 or 2 The amber LED above the switch will glow if such signals are present In the absence of such data streams the LED will be unlit and the switch will be nonfunctional LCD Monitor Screen TFT View input video sources here Screen image parameters are adjustable by four manual controls Item 8 LCD Monitor Display Controls Rotary Pots Adjust the LCD monitor image with these four controls BRIGHT Brightness adjust this knob for desired screen brightness CHROMA Color Saturation adjust this knob for desired amount of image color saturation TINT Tint adjust this trim pot for desired image color hue NTCS only CONTRAST Contrast adjust this trim pot for desired image scene dark to bright contrast Continued O 2002 Wohler Technologies Inc ALL rights reserved VAMP AC3 User
5. Boreuvy I VHOUHO LHORIS O8PIA dol I OeplA Bojeuy Indino papajas 1 Z94646 LI vos Gi Gi een LgOd ndulo9PA 1 see ospiA Lpeapeee 10 Jv JON JO jueseJg WOd 40 eov z 40 z 40 pales jauueyd q31 Jojeoipul 9L 0id sd31 0jesipu ed ugang 91 014 elo 821n0S DX ry Se WS WS A iN AK eov O am Pi i azTavsia gt MOLO3TIS T 109199 jouueyD Jeyeads 345194 yoer yndjno uoydpe H PIL Jexyeeds Ea A W e i 901646 89d dwy olpny Jayeods bes be 621616 aod joejes oU Jepooeg IEuDO Joyeedg yo Lu e lr rn vn pen e rm oxmvsia YA 4019371385 7 TA r rem 4 I 0PL6L6 40329 eq ueens I ad eseoal L pn zm pe zm ps sl 2002 Wohler Technologies Inc ALL rights reserved L QNnO3MAS M er Ee l O QNNOYYNS 1 I 87X ndu wyo s X33 41 t peoejequn resl l ona mau N31N39 UU U LNOUS LHOlM sav 10 3v L 0200S ony psoas N atia uopeuuue 9oJnog olpn JoueAuo Bojeu 0 eomog SSY 124619 jauueyo 9 indul ar J peces Wey a a 7 55 IDA door IT La 0 1616 l T l 801616 L L el 204646 1 I I JeAug udeJ amp ueg I 49 91dJ9 U 3497 I JeAug udeJ amp ueg 1 Y l L ee poer ee ji TR uoo 9 S po Aa EET ER L l 4 j l peouejeg I x a x ETE aao I ax du Be EE BS eee 1 one doo Bo ele ez BEBE essoa EE B Es gt UU Lime
6. Manual P N 821522 Rev B Section 2 Operation a H lt Z LU a ahos 4 MAXLINJO A1NOH4JH I1NOMJT Qo Tv 109195 9 OUd Z O K L O OSIN O Wd Q mi ahos O MAER EA S L L l TY Ugg EOY dWVA S SE Ze ES H Figure 2b VAMP AC3 Front Panel Features 2002 Wohler Technologies Inc ALL rights reserved 11 VAMP AC3 User Manual P N 821522 Rev B Section 2 Operation Continued 9 Power Indicator Green LED This LED signals the operating condition of the power supply it glows green to indicate the VAMP AC3 is connected to mains power and an operation voltage is present Brightness Control Level Meters Recessed Trim Pot This trim pot simultaneously adjusts the brightness of all the bargraph meters Turning the trim pot clock wise increases the brightness You must use a small flathead screwdriver or similar tool to adjust this control ai Input Source Select 2 Position Toggle Switch This two position toggle switch allows the operator to choose between two AC 3 AES input sources Input Source 1 or Input Source 2 See items C D F and G on pages 14 16 for information on these inputs 42 Balance Control Rotary Pot This pans the volume balance between the left and right speakers or headphone Ifthe balance is adjusted hard right a slight left right channel mix is retained so that phase discrepancies may be discerned 43 Phase Indicator Green Green Red
7. OOO ANALOG OOOOO VIDEO IN OOOOO AS A O0000 SELECTED OUTPUT OOO ANALOG CH A L CH B R VAMP AC 3 253811 01 Figure 2c VAMP AC3 Rear Panel Features 15 2002 Wohler Technologies Inc ALL rights reserved VAMP AC3 User Manual P N 821522 Rev B Section 2 Operation Rear Panel Features Continued G Source 2 Input Unbalanced BNC Connector This female BNC connector is meant to receive either an AC 3 Dolby Digital amp or standard AES PCM signal and is configured for an unbalanced 75 Ohm connection Select this input for monitoring by setting the Source Select switch Item 11 on the front panel to 2 H Selected Output Analog XLR Connectors These two 3 pin male XLR connectors left and right respectively output balanced line level analog signals of the monitored audio as selected for the left and right internal speakers or headphone However this output is not affected by the balance Item 12 and volume Item 16 controls See Items 2 3 5 6 and 11 for source selection parameters o Video Input and Loop Through Analog BNC Connectors ANALOG AUDIO IN Connect standard composite analog video signals here PAL and NTSC video signals are automatically detected and configured for monitoring ANALOG LOOP This connector passes the video input source signal to feed downstream equipment See Item J for setting termination Video Input Termination Setting 2 Position Toggle Swi
8. WWohler VAMP AC3 Audio Video Monitor 6 Channel Digital Audio w Two AC 3 AES Audio Inputs and One Loop Through One Video input w Loop Through LCD Monitor Six 53 Segment High Res Level Meters and Phase Indication Document P N 821522 Rev B User Manual CONTENTS Title and Contents Introduction Section 1 Features and Specifications General Description and Features Applications and Specifications Section 2 Operation Installation Front Panel Features Rear Panel Features Section 3 Technical Information Level Meters Interconnect Block Diagram 2002 Wohler Technologies Inc ALL rights reserved Important Safety Instructions 1 Read these instructions 2 Keep these instructions 3 Heed all warnings 4 Follow all instructions 5 Do not use this apparatus near water 6 Clean only with dry cloth 7 Do not block any ventilation openings Install in accordance with the manufacturer s instructions 8 Donotinstall near any heat source such as radiators heat registers stoves or other apparatus including amplifiers that produce heat 9 Donot defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or the third prong are provided for your safety If the provided plug does not fit into your outlet consult an electrician for replac
9. acteristics BNC 75 Q ohm unbalanced Peak Acoustic Output 100 dB SPL 2 ft KLR IIU Kapol balaogd Electrical Response 20Hz 20kH 1 dB Minimum input level 250 mv Acoustic Response Conversion data width 20 bit 6th Octave 170 Hz 16 kHz 1 dB 10 dB 140 Hz 20 kHz Amp Power Output 20W Transient 11W Continuous RMS each side 4 ohm Dynamic range 95 dB Frequency Response 10 Hz 20 kHz 0 5 dB Analog Chuput Distortion electrical Less than 0 1 at any level below Limit Distortion 0 00596 Threshold au Le Lu SE cube evel Cl dois Distortion acoustic Typically less than 1 5 at frequencies above 200 Hz 6 or less at worst case Meurs ee oe ee Hum and Noise More than 70 dB below full output Level Meters Six 53 segment high resolution tri color Video Input One Composite Analog 1V peak red yellow green LED bargraphs to peak NTSC PAL Auto sensing Power Requirement 100 250 VAC 50 60 Hz Auto Select Display Resolution 480H x 230V Power Consumption 60W Screen Type Size TFT 4 Diagonal Dimensions HxWxD 3 5 x 19 x 12 inches 89 x 483 x 298 mm Video Controls Brightness Chroma Tint NTSC Weight 17 lbs Approximately 7 7 kg only and Contrast 713 Grandview Drive South San Francisco CA 94080 K IN 650 589 5676 FAX 589 1355 SOURCE 1 30 SELENA S i BALANCED 110 N EE 2 Loop BALANCED non 1100 CH A L CH B R UNBAL 750 source EN W s 750 VAMP AC 3 TERM
10. and Amber LEDs The phase indication LEDs offer instant verification of phase polarity relationships in stereo or mono sources in the Right Front and Left Front channels There are three LEDs the two smaller LEDs on either side show instantaneous phase relationships in the signals while the center and larger LED will indicate the average phase condition The left side or in phase LED glows or blinks green when signals are in phase The right side or out of phase LED glows or blinks amber for out of phase signals The center LED indicates the average phase condition by glowing green for in phase conditions or red for out of phase conditions In general it is sufficient to regard the center LED average phase condition as adequete for proper phase monitoring While it is normal for stereo signals to contain some intermittent instantaneous out of phase and in phase conditions small LEDs a steady red glow of the larger center LED almost always indicates an out of phase alarm condition PAL NTSC Signal Type Detection Green LED This LED will glow green to indicate that the video input signal is of the PAL type To indicate that the signal is of the NTSC type the LED will not light up This signal type detection is automatic 45 Input Status Indicators Green LEDs These two green LEDs indicate which kind of signal is being received at the selected input either the left LED for AC 3 Dolby Digital amp or right LED for AES or stand
11. ard PCM Pulse Code Modulation Volume Control Rotary Pot This controls the loudness of the audio reproduced by the internal speakers or connected headphone 47 Headphone Jack 1 4 Phone Connector Select the headphone audio sources as you would for the internal speakers When you plug in headphones the internal speakers will mute This jack accepts the standard 1 4 phone type stereo plug 12 2002 Wohler Technologies Inc ALL rights reserved VAMP AC3 User Manual P N 821522 Rev B Z W C E Q2 CD 60 89 0 9 GE LU D yamod C 7 F EIN 9 dans au YANSI Ndidi Section 2 Operation a ig in MH LH LH LUI DUDU Dee d 4 bg a Nonaam SS ED SU O O S Kl 9 S i g g T1910 0V dAVA E S 82 KE ES m Figure 2b VAMP AC3 Front Panel Features 2002 Wohler Technologies Inc ALL rights reserved 13 VAMP AC3 User Manual P N 821522 Rev B Section 2 Operation Rear Panel Features Please refer to Figure 2c on the following page to familiarize yourself with the rear panel features of the VAMP AC3 unit The following sections describe these features and are referenced by letter to Figure 2c a p Power IEC 320 Connector Attach a standard IEC 320 power cord between this connector and mains power The front panel Power LED Item 8 will glow green to indicate that an operating voltage is present Options 2 Pos
12. center glows green to indicate the VAMP AC3 is connected to mains power and an operating voltage is present Cooling and Airflow It is recommended that you allow a IRU 1 75 25mm space above and below the unit for air circulation Rack Mounting The VAMP AC3 rack mounts in a standard EIA 310 D specification 19 483mm rack and needs 2RU 3 5 88 9mm of space See Figure 2a facing page for unit dimensions Allow sufficient space at the unit rear for connector and cable clearance approximately 4 102 mm The VAMP AC3 weighs approximately 17 pounds 7 7 kg and rack mounts from the front panel support rails Rear support is not required LCD Monitor Viewing Position To obtain the best operator s viewing angle mount the VAMP AC3 as nearly straight on to the operator s position as possible 0 degrees left right or up down Good image quality is assured if viewing angles are between 45 degrees from the center axis in the horizontal plane left right In the vertical axis good image quality is obtained between 10 degrees looking down and 30 degrees looking up Due to the nature of LCD s there are certain anomalies which can cause the displayed video to appear incorrect If the viewer is outside the optimal LCD display viewing range the contrast ratio brightness and color saturation will not be or may not appear to be a true representation of the displayed video Additional anomalies such as loss of resolution apparent reversed
13. ement of the obsolete outlet 10 Protect the power cord from being 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 over 13 Unplug this apparatus during lightning storms or when unused for long periods of time 14 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as when power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped 15 Do not expose this apparatus to rain or moisture 16 The apparatus shall be connected to a mains socket outlet with a protective earthing connection CAUTION In products featuring an audio amplifier and speakers the surface at the side of the unit where the audio amplifier heat sink is internally attached may get very hot after extended operation When operating the unit excercise caution when touching this surface and ensure that external materials which may be adversely affected by heat are not in contact with
14. h connectors or T connectors from Source or 2 then the respective DIP switch ofthe source feeding the downstream equipment must be set to unterminated UP If there is no connection to downstream equipment then the respective DIP switch section should be set to terminated DOWN See the illustration below for DIP switch settings Input Source 1 and 2 Termination DIP Settings 12 12 12 12 UNTERMNATED 1 Ir lj DIP Switch SE J 38 29 Eg S TERMINATED EE 55 SE ES mu 55 Sr 5 S1 Source 1 n on n on S2 Source 2 Zo S DD DD D D F Source 2 Input Balanced XLR Connector 14 This female 3 pin XLR connector is meant to receive either an AC 3 Dolby Digital or standard AES PCM signal and is configured for a balanced 110 Ohm connection Select this input for monitoring by setting the Source Select switch Item 11 on the front panel to 2 Continued You cannot connect two different digital audio signals simultaneously to the balanced XLR and unbalanced BNC input connectors in the same input section 2002 Wohler Technologies Inc ALL rights reserved Section 2 Operation VAMP AC3 User Manual P N 821522 Rev B WOHLER TECHNOLOGIES INC 713 Grandview Drive INTERNAL POWER South San Francisco CA 94080 O O O 650 589 5676 FAX 589 1355 SUPPLY APPROVED BY SOURCE 1 BALANCED 110 0 100 240 VA 50 60 Hz
15. hannels at once and LEDs are provided to indicate this selection 4 Color LCD Video Screen with Brightness Audio Inputs Two AC 3 EBU inputs on BNC connec Chroma Tint NTSC Only and Contrast Controls tors with one loop through and two XLR connectors Auto Detection of NTSC PAL Signals with NTSC EEN PAL Indication LED Video Inputs One Composite Video Input On BNC AES EBU or encoded ATSC MPEG 2 Dolby EE EENS Digital Self Powered Speaker System e Six High Resolution 53 Segment Tri Color LED Headphone Jack mutes speakers Bargraph Meters Line Level Analog Output of Selected Sources on e Left Right front phase indicators XLR Connectors Select any channel or pair of channels for isolated listening or a stereo mixdown of all 6 channels 4 O 2002 Wohler Technologies Inc ALL rights reserved VAMP AC3 User Manual P N 821522 Rev B Section 1 General Features and Specifications Applications The VAMP AG3 is intended for use in machine rooms edit bays or wherever compact on the spot confidence monitoring of video and six channel digital audio is required Thorough magnetic shielding less than 1 Gauss at any surface allows installation of the unit immediately adjacent to video monitors Designed built and rigorously tested in the U S the VAMP AC3 monitor is backed by a strong two year warranty and a satisfaction guaranteed return policy Digital Input Specifications General Specifications Input char
16. it There is a Hot Surface label see diagram attached to the aforementioned surface of the product Introduction Congratulations on your selection of a Wohler Technologies product 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 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 2 2007 Wohler Technologies Inc ALL rights reserved VAMP AC3 User Manual P N 821522 Rev B General Features and Specifications Description Features Applications Specifications Dolby is a trademark of Dolby Laboratories and licensor of technology used in this product For more information concerning Dolby Digital and AC 3 please contact Dolby Laboratories directly at info dolby com or Dolby Laboratories Inc 100 Potrero Ave San Francisco CA 94103 phone 415 558 0200 2002 Wohler Technologies Inc ALL rights reserved 3 VAMP AC3 User Manual P N 821522 Rev B Section 1 General Features and Specifications W Wohler VAMP AC3 AC 3 AES Digital Audio Analog Video Monitor VAMP AC3 Front Panel The VAMP AC3 is a powered stereo audio video monitor designed specifically for simultaneous monitoring of composite analog video and the six digital audio channels associcated with ATSC DVB AC
17. ition DIP Switch This DIP switch is reserved for possible options still to be determined You may disregard its settings Source 1 Input Balanced XLR Connectors IN and Loop through IN This female 3 pin XLR connector is meant to receive either an AC 3 Dolby Digital amp or standard AES PCM signal and is configured for a balanced 110 Ohm connection Select this input for monitoring by setting the Source Select switch Item 11 on the front panel to 1 LOOP THROUGH This male 3 pin XLR connector outputs a copy ofthe signal entering the input and is not affected by the front panel controls or headphone mute Source 1 Input Unbalanced BNC Connectors IN and Loop through IN This female BNC connector is meant to receive either an AC 3 Dolby Digital amp or standard AES PCM signal and is configured for an unbalanced 75 Ohm connection Select this input for monitoring by setting the Source Select switch Item 11 on the front panel to 1 LOOP THROUGH This female BNC connector outputs a copy ofthe signal entering the input and is not affected by the front panel controls or headphone mute Termination Settings Source 1 and 2 2 Position DIP Switch This DIP switch sets the termination characteristics of the Source 1 and Source 2 inputs There are two switches one for the Source 1 input S1 and a second switch for the Source 2 input S2 If input signals are fed to downstream equipment using the Source 1 loop throug
18. left and right 2 Selector Disabled Indicators Left and Right Red LEDs These red LEDs left and right glow red to indicate that the left and right Speaker Select switches Item 3 are disabled because the ALL SELECTED toggle switch Item 5 is set to the ALL position 3 Speaker Select Left and Right 6 Position Rotary Switches These six position rotary switches allow you to isolate and monitor any one of the six possible channels independantly through the left and right speakers Simply choose positions 1 6 for either the left or right speaker and the chosen channel will be monitored from the respective speaker Note This function is disabled if the ALL SELECTED Channel select switch Item 5 is in the ALL position 4 Level Meters Audio 53 Segment Bargraph displays 10 Audio levels for source channels 1 6 are displayed via six high resolution 53 segment LED bargraph meters three on the left side of the front panel three on the right side Dynamic range for these meters is 65 dB and they are able to display signal levels using both PPM and VU standards Each meter is labeled according to the standard Surround Sound nomenclature left front right front center low frequency effects left surround and right surround Contact the factory for additional meter information concerning meter scales and ballistics ALL SELECTED Channel Select 2 Position Toggle Switch When this 2 position toggle switch in in
19. ly small segments This high resolution segment size is easy to accurately monitor visually for distances up to six feet 1 8 meters Segment size is 0 158 4 mm x 0 04 1 mm Segment pitch is 039 0 99 mm Each LED bargraph display section visually indicates the dynamic changes within the audio signal source s being monitored All bargraph LED segments are of the tri color type green amber red Ballistics for these meters are factory set to display a single floating PPM dot continuous decay of 20 dB in 1 5 seconds above a VU bar each segment s color being fixed according to its position on the scale Level gain is factory set at 4 dBu Dynamic range for these 53 segment meters is 65 dB Scales Please refer to the figure below for an illustration showing the standard scale for the 53 segment bargraph display used in the VAMP AC3 audio video monitors Custom variations of this scale are also available on special order 53 Segment LED Bargraph Specifications Dynamic range dB 65 dB Midscale resolution 1 dB Segment Quantity 53 Segment size 0 158 4 mm x 0 04 1 mm Segment pitch 0 039 99 mm 20 2002 Wohler Technologies Inc ALL rights reserved Section 3 Technical Information VAMP AG3 User Manual P N 821522 Rev B VAMP AG3 Interconnect Diagram 21 AAA AI AWA wejbelg 192019 329uuo24e93u COV dNNVA SlOMUOD oepiA aqq uojgesipuj B uGnouy Wee OSLN 1Vd l oeplA Bojeuy o ueere I en
20. tch When using the Video Loop through connector or an external T adaptor to pass video source signals to feed downstream equipment you must set the termination toggle switch to Unterminated DOWN When there is no connection to downstream equipment set this switch to Terminated UP You cannot connect two different digital audio signals simultaneously to the balanced XLR and unbalanced BNC input connectors in the same input section 16 2002 Wohler Technologies Inc ALL rights reserved Section 2 Operation VAMP AC3 User Manual P N 821522 Rev B M WOHLER TECHNOLOGIES INC 713 Grandview Drive South San Francisco CA 94080 650 589 5676 FAX 589 1355 SELECTED OUTPUT d O SOURCE 1 KL 9 WY ANALOG BALANCED 110 A BALANCED 110 0 CH A L CH B R UNBAL 750 VAMP AC 3 253811 01 100 240 VA 50 60 Hz 17 Figure 2c VAMP AC3 Rear Panel Features 2002 Wohler Technologies Inc ALL rights reserved VAMP AG3 User Manual P N 821522 Rev B 18 2002 Wohler Technologies Inc ALL rights reserved VAMP AC3 User Manual P N 821522 Rev B Technical Information Level Meters Phase Indication Interconnect Block Diagram 2002 Wohler Technologies Inc ALL rights reserved 19 VAMP AC3 User Manual P N 821522 Rev B Section 3 Technical Information Level Meters Description The 53 segment type of tri color LED bargraph display has a total length of 2 24 56 8 mm and uses relative
21. video effect and frame field strobe effect with the CCFT backlight may also be observed The LCD used in the VAMP AC3 is optimized for viewing from the 12 o clock position That is from approximately eye height and upwards Typically the VAMP AC3 is mounted at eye height and viewed by looking straight into the display Going beyond the specified viewing area can cause anomalies as mentioned above NOTE In PAL mode operation the LCD driver discards every seventh line of active video so an entire video frame fits within the display screen This is normal with most LCD s currently on the market General Installation Recommendations Recommended cable type for analog video signals is Belden 8281 Belden 1694A or equivalent Recommended cable type for digital audio signals is Belden 1800B or equivalent Static Discharge As with most electronic equipment static discharges can damage components within the unit Take precautions to ensure your installation environment is not subject to static discharges 2002 Wohler Technologies Inc ALL rights reserved 9 VAMP AC3 User Manual P N 821522 Rev B Section 2 Operation Front Panel Features Please refer to Figure 2b on the following page to familiarize yourself with the front panel features of the VAMP AC3 unit The following sections describe these features and are referenced by number to Figure 2b 4 Speakers Left and Right The speaker system is comprised of two mid range speakers
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