Colorado Video 1991 Short Form Catalog (1991)

10 Pages·1991·2.2 MB·English

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eze-game Communications Contents:
Introduction 2
Video Instruments 3
Positioning 3
Ah , An
Measwument ar7d Analysis
30,
ran 605
6061r,'
21101",
202 21
(-X,,ir 6M .1
Video Memories 5
491 ..
49?
S! re
I rai-i,,
6
tii 0
Video Communications 7
Wide-Band Products 7
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GlenSouthworth,ColoradoVideofounder, received
a1990Emmyawardfor"thetechnologyandimple-
mentationof stillpicturetechnology fornews."
INTRODUCTION
19 As it enters its 27th year, Colorado Freeze-Frame Communications Contents:
Video's commitment to designing and Colorado Video pioneeredthefreeze-
Introduction
crafting unique video devices remains frame(slow-scan)videocommunications
strong.Thecompany'sproducts provide industry. These products transmit high Video Instruments
creative solutions to complex problems quality video images to one or more Positioning
throughout the world. locations. A wide varietyof models and Video Pointer 610E
configurations are available for visual X-Y Indicator 620
Video Instruments industrial problem solving, general pur- X-Y Indicator 620A
Colorado Video instruments measure, posecorporatecommunications, remote Multiline Generator 623
record, modify, and analyze video environmental or security monitoring, Pattern Generator 670
images. A line of unique video frame education, medicine, and scientific data Measurement and Analysis
stores,useful with avarietyof computers transmission. Waveform Display Gen. 303
is one of Colorado Video's specialties. Video Analyzer 321
Theseandotherinstrumentscanbeinte- International Trade Video Integrator 310A
grated intosystemsforvideomicrometry, Internationaltradehasbeenanimpor- Video Motion Analyzer 633
industrial inspection and control, image tant part of Colorado Video's business Video Position Analyzer 635
alteration and synthesis, and scan con- since 1967.Thevideo instruments, avail- Video Micrometer 305
version. Customized designs for OEM abletomeetdifferentscan rateandpower Video Caliper 306
andVARintegrationandmodificationsfor supply requirements, are used world Video Contrast Enhancer 605
special applications are also available. wide.Colorado Videofreeze-framevideo Video Quantizer 606
communications systems also have a Video Digitizer 270
global reach. Virtually all of the mono- Sync Stripper 302-
chrome systems are available for use Video Test Generator 615 4
outside North America. The company Digital Display Gen. 109A/B 4
maintains a network of international
distributors and an export manager Video Memories 5
handles inquiries at headquarters in Video Frame Store 491 5
Boulder, Colorado. Video Subtractor 492 5
Video PeakStore 493 5
Scan Converter 494 5
Asynch. FrameStore 495 5
Video Multimemory 499 5
Monitoring Memory 593 6
Video Multimemory 599 6
Digital Interfaces 6
Image StorageSystem 941 6
Video Communications 7
Wide-Band Products 7
Multiplexing System 496/497 7
Graphics Adder 860 7
Freeze-Frame Video 7
Video Transceiver 250 7
Video Transceiver 290 7
Digital Transceiver 286 7
Video Compressor 262 7
Subtracting Receiver 292 7
Peak Store Transmitter 293 7
Image Comm. System 951 7
ColoradoVideo,Inc. Box928 Boulder,CO80306 [phone]
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Analysis used in biologicalresearch for measure-
ment ofgrowth and size oftissue and as
OE Video Waveform Display Generator a real time video densitometer It mea-
different com- Model 303
sures light level uniformity and concen-
rectangle pat- This unitgeneratesawaveform display
tricity infiberoptics. Manufacturing uses
ere within a oftheintensity underlying awhitevertical
include quality control of video camera
cursor within avideo image. The wave-
tubes, light emitting diodes, and laser
form is superimposed on theleft side of
beam energy profiles.
the video image. Positions along the
display'svertical axiscorrespond to posi-
Video Integrator Model 310A
tionsalongthecursor. Positions alongthe
This unit producesaDCoutput voltage
display's horizontalaxis represent inten-
proportionaltotheoverall intensity within
sity increasingfrom left to right. The cur-
aselected region ofthe inputvideosignal.
soris shown asa white vertical line and
The analyzed region is rectangular, var-
can be positioned throughout 90% of
iable in both size and position. The DC
the image.
output voltage may be displayed on a
meter or used to directly control a
erimposes a Video Analyzer Model 321
process.
sshair over a The Model 321 adds several capa-
Applications include environmental
rticularlyuseful bilities to the Model 303's intensity
or processmonitoringof activitiesinvolv-
ing.Thecross analysis function (describedabove).This
ing fog, smoke, dust, or other diffused
nt panelscrew instrument dis-
subjects.
playsboth verti-
cal and hori-
XY Indicator Model 620A zontal cursors
The 620A adds lockable front panel and provides a
position controls to the 620's features. grating for the
waveform dis-
Multiline Generator Model 623 play. The hori
The Model623 superimposesaseries zontal cursoris useful to more accurately
of equidistant vertical lines over a stan- determine precisely which imagefeature
dard videosignal.The number oflinesis corresponds to points along the wave-
switch selectable between 2,4,8, 16,32, form display.Thevertical cursor can be
64, 128, or256. Line brightness is con- slanted, left or right, to better analyze a
tinuously variable from black to white. particular object. Additionally, the 321
generates DC voltages proportional to
Video Pattern Generator Model 670 the image intensity at thecursors' inter-
The Model670superimposes asingle section and the Xand Ypositionsoftheir
blackorwhitepattern over avideosignal. intersection. A scan function can move
The pattern is specified by the userwhen either cursor at acontrolled rate enabl-
the unit is ordered and may be range ing achartrecorder to produce a copy
marks, measuring scales, alphanumerics, of the intensity profilealongeither cursor.
oralogodesign.The Model670 is ideal The 321 has many applications. It is
whereastable, fixed pattern is required.
ColoradoVideo,Inc. Box928 Boulder,CO80306 [phone]
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The VideoContrastEnhancerModel605. Anoriginal
imageisatleft. Shadingcorrection, contraststretch-
ing, andinversionproducedthemoreusefulimage
atright.
It is available with 512 x480, 2048 x480,
or 1024 x1024visible pixelresolution.All
have 256 shades of gray.
The Model 270A displays a cursorto
show the location of pixels being en-
coded. A waveform, displayed on the
monitorscreen, showsa brightness pro-
file, facilitating quickand accurate gray
scale level setting without additional
Video Motion Analyzer Model 633 Video Caliper Model 306 equipment.Theunit interfaceswith most
The Model633 produces aDCvoltage The Model 306 provides a meansto mini or micro computers.
proportional to the horizontal position of take horizontaland vertical measurements
ahigh contrast object in aselectablepor- simultaneously. Sync Stripper Model 302-2
tion ofa video signal. As the edge ofan To take a Givenavideoinput, this unit provides
object of interest tends toward the right measurement, videosynchronization pulses. Composite
side of a video image, the 633'soutput the user posi- sync, composite blanking, horizontal
voltage increases. Researchers have tions a rec- drive, and vertical drive outputs arede-
found the 633 useful for monitoring indi- tangular box rivedfrom theloop-through video input.
vidual heart cell motion. about the fea- The Model302-2is averycosteffective
ture of interest alternative to a genlockable sync
Video Position Analyzer Model 635 on the video monitor. Two front panel generator.
The Model 635 provides a digital displays indicate the dimensions of the
horizontal position readout ofahighcon- box.The box maybe positionedover and Video Test Generator Model 615
trast object in a selectable region of a encompass up to 80% of the image. The Model 615 generates video test
video image. The region is variable in signals for evaluating geometric, gray-
widthand position and its height can be Video Contrast Enhancer Model605 scale, and resolution characteristics of
selected at 4 or 8 lines of the raster. This instrument provides contrast ex- video equipment. Available in two ver-
pansion, shading correction, and inver- sions, the 615 requires external sync,
Video Micrometer Model 305 sion.Thecontrast enhancementfunction blanking, and drive inputs, the 615A
The Video Micrometer provides a improvesvisibilityof lowcontrast features generates these pulses and provides
meansto measure dimensions ofobjects bystretching aportion oftheinputvideo's them as outputs.
seen by a video camera. It includes grayscaleto fill alarger grayscale range
significant con- atthe output.Shading correction can im- Digital Display Generator
trast expansion provean unevenlyilluminated image.The Model 109A/13
capabilityto im- inversion function, bycreating anegative The Model 109A superimposes a
provethevisibil- image, can improve visibility of cracks, number on a videodisplay correspond-
ity oftheedges pits, scratches, and defects on highly ing to the value of an analog input volt-
of low contrast reflective surfaces. age. Designed
features. primarilyfor use
To take a Video Quantizer Model 606H with Colorado
measurement, the userpositionstwo ver- The Quantizersynthesizesacolorpic- Video Models
ticalcursorsaboutthefeature ofinterest. ture based on differentshadesof grayin 310A,321, 635A,
A front panel display indicates the a monochrome input signal. Sixteen it may alsodis-
distancebetween thecursors.The 305's threshold controls can be set to ''slice'' play voltages
'
waveform display, similar to that of the the input video signal, and sixteen sets from -5 to +5 --
Model 321 (see page 3), significantly ofcolorcontrols varythecolorassigned VDC derived from other sources.
assists the user in precisely positioning to each ''slice'' level. An eight level ver- The Model 109B superimposes a
thecursors foraccurate, repeatablemea- sion, the 606G, is also available. numberon avideo display correspond-
surements. The 305 is used extensively ing tothevalue of 31/2 or 41/2 digit BCD
in video microscopysystemsfor semicon- Video Digitizer Model 270A input. Designed primarily for use with
ductorresearch, development, manufac- This instrument digitizes high resolution Colorado VideoModels 305,305A, 635,
turing, and quality control. images of primarily non-movingsubjects. it may also display values from other
equipment providing BCD ports.
0
ColoradoVideo,Inc. Box928 Boulder,CO80306 [phone]
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tVhiedeMoodSuebltr4a9ct2odrisMpoldaeysla4n9y2diinsscprecetpiaonnciaepsplbiectatwieoenn. Ltehfte,iama`ggeoso.d" imagewasstoredforreference. Center,animageofapartunderinspectionis captured.Right,
VIDEO MEMORIES
ssescneiiglgCeifnnont-eliepdofeoirrwcaifeadonrprogep,dlVuiicsvmdaeeitedidoioeicnnposar,loaf,vtrihawdemieryesedsmeesasattyravoncarbrdhei-,esea.tliynoatDnneeerod--,f edtVxahiptaTdoanhseetuohratePMthsaoe'it'dsaoekbflaylh-4ctgo9ohnr3eteircnM(ruooeoruadstleleoywlsear4vd)i9dda3iemnopgli"vttiuiddmeeeo ttmaoysepsnimtccauariltcnshfgcrasaanstmnoei3rna3sggtoemari.elnTlhewiiawssietfcdsroeanlfmdaoserytbmcehaefenaocrneeaslmcateophrmsaea-t
faced with most computers. ready stored. betweentriggerandstoragecommence-
Standard configuration is 512 x 480 The ''time ex- ment. Upon trigger, theModel495com-
pixelswith 256shades ofgray. Single field posed'' image mences storagewhen thecamerastarts
or full frame storage is available. NTSC is continuously anewhorizontalline. Itcontinuesstorage
color is also availablefor most models. viewable and untilanentireframeis captured. Themax-
maybe resetat imum delay is 63 microseconds.
Video Frame Store Model 491 will or at timed
VoccseihonqTamdTeushpehestaeoeniortsdifSiM.uosauoaulobTdrlntheR,firmlsrGaeac4Bmmoft9veoeoe1casrrrotlyluioasMforyervo,amivdfedaferamieslcaluooimablrb4etisylrtu9aeacb2tciatewntrpsiiatatocuhintsr,moifernar.ggooliemres tcpditsrlinythoatuonneenrdsarense,vmmoatiiolmchbscsaejes.peinFnMacooobatoniridstlrcereisalmyrpkc2oeaihb9dtnwiuge3ilc,itatmcthrisooyeon.mcniAbaotl.piriopdgnrlfhieiirtnnscneggiaenttzthgairei,pao-spnnfplssraiieaecnaminadnekt-- vfSrsaVioetlgieorcoTedrwwowsheiearsne.rdo,mgdiE,oanMMatgnooucoirddrlhoaentrbrilefiaemprcmpaa4lakrelga9msowmeyeo9daosburframcsdemcyeeaaqakstayuMytue1aornb6nenbdt,eodiedera3.lsl2mstel,aeil4ylmeqo9ercufs9tre6peeln4deeazcpeiefesdmsoed,-r.
dtmmupuihoesanfeenrmdffiioeetustrrrlwooeionrnfae.conoisreafmlSsaasayeirisgnpregigeaenslpsrafe.rleaToritf.sevherniedacdimeedosediipufltmoifarpnaeyugrareteededsnadclaioetntnfidibromaoeniemtmtvcwoaioegdttmeeheh-senoe ttvS55iui22ccrdTae55alehniloirlissaininteaCsee,ilosconwn2eorsavqn:ty1vetursiireuicnnntpmetutrvoarnrluevtlrisMsasdciocoaegoedrndn.daevWilfevlnhortiweretid4trstde9mhhioie4saatprstil3estgan0thntyHaeaaalnztidntvpatpoeirhurcdaet--
output.
Asynchronous Frame Store
Model 495
This "wraparound'' grabbercaptures
events that cannotbesynchronized with
a video camera. After it is triggered, a
ColoradoVideo, Inc. Box928 Boulder,CO80306 [phone]
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A seriesofimagescapturedbyaVideoMultimemory(Models 499and 599).
6 Monitoring Memory Model 593 Host Adapters Model 493 Peak Store
The Model 593 makes video time ex- Colorado Video Host Adapters are Model495 Asynchronous
posures, allowing anobserver to review, parallel I/Oboardsdesignedforspecific Frame Store
at a glance, events that occurred over computers. They interface with Models Model499 Multimemory
prior seconds, minutes, or hours. If an 793 and 799 I/O Modules. Model 593 Monitoring Memory
observer should become distractedfrom Model599 Multimemory.
Host Adater Model 741
hismonitoring duties,the593will provide TheModel941 mayalso combinewith
For Apple Ile,M
a record of events during his absence. the following communications units:
The 593 is easily installed between a Host Adapter Model 745 Model 240 VBI Transmitter
videocamera output and videomonitor ForIBM PC/XT-andPS/2T" Model30. Model 241 VBI Receiver
input. A hard-wired remote control en- Model 286 Digital Transceiver
ables selection of live video or the time Digital Image Storage System Model 290 Video Transceiver
exposedimage.Additionalcontrols allow Model 941 Model 292 Subtracting Receiver
preservation of the exposed imageand Colorado Video'sDigital ImageStorage Model 293 Video Transmitter.
start of a new time exposure. System provides convenient image
storage. The Model 941 enables up to
Video Multimemory Model 599 80 full frame images to be stored, re-
TheModel599provides arecord ofthe called, anddeleted. Pictureannotation is
time immediatelybefore and afteratrig- also featured.
gering event. Connectedto acamera,the Thissystem consistsof an IBMPersonal
unit continually recordsasixteenframe System/2T"" Model 30 computer, 20MB
loop. When triggered, the Model 599 hard disk drive, special interface cards,
records eight more frames and stops. cabling, and software. Greater storage
Hence, eight frames before the trigger capacity or removable 20MB disk car-
and eight frames after are captured. tridges are optional.
These sixteen frames can then be re- TheModel941 mustbe usedwith one
played continuously or steppedthrough of the following video memories:
individually for subsequent viewing. Model 491 Frame Store
Model 492 Video Subtractor
Digital I/O Modules
I/O Module Model 793
This plug-in module interfaces com-
puters with Models 491, 492, 493, 494,
495 and 593.
I/O Module Model 799
This plug-in module interfaces com-
puters with Models 499 and 599.
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ColoradoVideo, Inc. Box928 Boulder, CO80306 [phone]
(cid:9)(cid:9)(cid:9)(cid:9)(cid:9)(cid:9)(cid:9)(cid:9)(cid:9)(cid:9)
ColoradoVideo'sMultiplexingsystemisusedtorelay
shuttlelaunchscenesfrommultiplecameras via one
satellite transponder Up to fourvideosignalsmay
be combinedin this manner
Digital Video
Transceiver Model 286
The Model 286 is the most versatile
video transceiver. It digitally transmits
color or monochrome images and can
accommodateupto fourframememories
for simultaneous image viewing. Most
Model 286s may be interfaced with the
Model 941 Image Storage System.
Modems running from 1200 bps to
512Kbpsmaybeconnectedtoachoice
of ports, makingthe286 useful with sev-
eral types of communication channels.
VIDEO COMMUNICATIONS Monochrome versions are available
with from 256 x 240 to 512 x 480 pixel
resolution. Color unitsare availablewith
512 x 240 or 512 x 480 resolution.
Colorado Video communications Vertical Blanking Interval Video Compressor Model 262
-nt transmitsvideo imagesusing Transmitter/Receiver Model 240/1 Used for transmitting X-rays, photo-
ThoKAndel 240hidesfrozen imagesin graphs, and other motion free subjects,
the Model 262 does not have a built-in
Providedetailedinformation Jeomemory. Images mustremain un-
r-Trasurrng aboutvideoinstrumentsfor; ianged during transmission. A Model
a~m,etreei~arthd~a,OmCnencntoet'~inmor,erunonnrttCsc&haatMlrooandcsitfesirycsGmetonenemrsation I0OL~]D7 QHAS$Mafed-evinndlale4dnsImafua;myroCanoirnglnemaeogwarmTItaeSFndihtaotoenoonnVsrsyimoitodfFtruoesytroylrsmIrbmad-iCaelalitpn.agleloigss.t, s315uT220bhxtoeirrs4a2a8cMv90tao0iidnmliegaoslbnulRsoeee2ccwd9hei2ritahtvoemtifshrereoaMrpmieoxcd2deeul5eia6vlrlee-xs2somi9lt2e2eu4m.t0Tioohrtneyo.
eceiverforimagecomparison.Itreceives
TAPEBUSINESSCARDHERE. emrasgveisaftreolmepMhoodneel.sTh2e50fiorsrt2r9e0cetirvaendsmiimt--
age is stored in a "reference'' memory
andsucceeding images arestored in a
"new'' memory. Awired remote control
selectsbetween displayof thereference
image, thenewimage, or animageshow-
ing the difference between them.
Peak Store Transmitter Model 293
TheModel293combinesfreeze-frame
transmission with a video memory that
continuallyadds newdata if it isof higher
(or lower) amplitude than data already
The Model 86U, easuy ciuuou ,;: ._ stored. This function allows video time
motion video conferencing systems, freeze-frame viaeoat a luvv F exposuresforobject trackingortransient
provides graphic image transmission lution is 256 x 240. Options include event recording. Models 250 and 290
capability. Graphic displays and frozen a second video memory or higher receive images via phone line from the
images can be conveyed between con- resolution. Model 293.
ference sites using only the full-motion
channel. Video Transceiver Model 290 Digital Image Communications
The Model 860 uses an additional This versatile, high quality transceiver Systems Model 951
monitorforgraphicdisplay, andcamera can hold upto four frame memories for An IBM PS/2'" Model 30 Computer
to pick up graphic images. Pushingthe simultaneous viewing, and hasa built-in andaColoradoVideoFrameStoreModel
860's ''send graphics" button transmits threecameravideoinputswitch.Ahard- 491 combineto providetransmission and
thegraphic.AModel860attheothersite wired remote control is standard. Most reception offrozen videoviaphonelines.
senses the graphic transmission and Model290smayinterfacewith theModel An internal hard drive provides storage,
displays it on the second monitor until a 941 Image Storage System. andretrievalof upto 80full frameimages.
new graphic is sent. Monochrome versions are available NTSC coloror monochrome operation
with from 256 x 480to 512 x 480 pixel is standard. RGBimageoperationis op-
resolution.NTSCcolorunitsareavailable tional. Data compression is available for
with from 512 x 240 to 512 x 480 more rapid transmission.
resolution.
ColoradoVideo, Inc. Box928 Boulder,CO80306 [phone]
(cid:9)(cid:9)(cid:9)
Colorado Video'sMultiplexingsystemisusedtorelay
shuttlelaunchscenes frommultiplecamerasviaone
satellitetransponder Up to four videosignalsmay
becombinedin this manner
Digital Video
Transceiver Model 286
The Model 286 is the most versatile
video transceiver. It digitally transmits
color or monochrome images and can
accommodateuptofour framememories
for simultaneous image viewing. Most
Model 286s may be interfaced with the
Model 941 Image StorageSystem.
Modems running from 1200 bps to
512K bpsmaybeconnectedto achoice
of ports, makingthe286 useful with sev-
eral types of communication channels.
Monochrome versions are available
with from 256 x 240 to 512 x 480 pixel
resolution. Color unitsare availablewith
512 x 240 or 512 x 480 resolution.
Colorado Video communications Vertical Blanking Interval Video Compressor Model 262
equipmenttransmitsvideoimages using Transmitter/Receiver Model 240/1 Used for transmitting X-rays, photo-
full bandwidth channels, ''spare'' band- TheModel240hidesfrozen images in graphs, and othermotion free subjects,
widthwithin TVsignals, data channels, or the vertical interval of a TV signal. The the Model 262 does not have a built-in
phone lines. Model 241, when fed this "host'' TV videomemory. Images mustremain un-
signal, reproduces thestillvideoimages. changed during transmission. A Model
Video Multiplexer Model 496 Uses include instructional program- 250or 290isusedatthereceivesite.The
Video Demultiplexer Model 497 ming distribution and subscriber sup- 262 is available with from 256 x 240to
Ruggedized Multiplexer 496A/B ported weather information services. 512x480monochrome pixel resolution.
The Video Multiplexer interleaves
frames or fields from up to four syn- Models 250, 290, 286 Subtracting Receiver Model 292
chronizedvideosourcesfortransmission These units take standard video sig- The Model 292 is a dual-memory
over one channel. Upon receiving the nals, freeze them into a video memory receiverforimagecomparison.It receives
interleavedsignals,theDemultiplexer pro- upon command, and transmit them via images from Models250or 290transmit-
vides each source as separate video phone line upon another command. As ters via telephone.Thefirst received im-
outputs. it receives asignal,eachunit reconstructs age is stored in a ''reference'' memory
With multiplexing, one satellite circuit the imagefor display. Each model pro- and succeeding images are stored in a
canbeusedto conveyuptofourseparate vides 256 shades of gray. "new'' memory. Awired remote control
programs. One video tape can record Multiplevideoconference locationscan selects between displayof the reference
andplay backupto foursourcesperfectly belinked togetherusingastandard audio image, thenewimage, or an imageshow-
synchronized. conference bridge or bridge service. ing the difference between them.
Current applications include use in Theseproductsareapprovedforusewith
aircraft andremotelypilotedvehicles,and AT&T's Alliance 2000" Audiographic Peak Store Transmitter Model 293
satellite relayed multiple camera launch Teleconference Bridging Service. TheModel293combinesfreeze-frame
observation. transmission with a video memory that
Video Transceiver Model 250 continuallyadds newdata if it isof higher
Graphics Adder Model 860 The preferredunitfordistance educa- (or lower) amplitude than data already
The Model 860, easily added to full- tion, this model provides monochrome stored. This function allows video time
motion video conferencing systems, freeze-frame videoat a low price. Reso- exposuresforobjecttracking ortransient
provides graphic image transmission lution is 256 x 240. Options include event recording. Models 250 and 290
capability. Graphic displays and frozen a second video memory or higher receive images via phone line from the
images can be conveyed between con- resolution. Model 293.
ference sites using only the full-motion
channel. Video Transceiver Model 290 Digital Image Communications
The Model 860 uses an additional This versatile, high quality transceiver Systems Model 951
monitorforgraphicdisplay, and camera can hold upto four frame memories for An IBM PS/2'" Model 30 Computer
to pick up graphic images. Pushing the simultaneous viewing, and hasa built-in andaColoradoVideoFrameStore Model
860's "send graphics" button transmits threecameravideoinputswitch.Ahard- 491 combineto providetransmission and
thegraphic.AModel860attheothersite wired remote control is standard. Most receptionof frozen videoviaphonelines.
senses the graphic transmission and Model 290smayinterfacewith theModel An internal hard driveprovides storage,
displays it on the second monitor untila 941 ImageStorage System. and retrievalof upto 80full frame images.
new graphic is sent. Monochrome versions are available NTSC coloror monochrome operation
with from 256 x 480 to 512 x 480 pixel is standard.RGBimageoperationis op-
resolution.NTSC colorunitsareavailable tional. Data compression is availablefor
with from 512 x 240 to 512 x 480 more rapid transmission.
resolution.
ColoradoVideo,Inc. Box928 Boulder,CO80306 [phone]
FREQUENCY FOLLOWER MODEL FF-1
HIGHLY ACCURATE FREQUENCY FOLLOWING
HIGHLY ACCURATE ENVELOPE FOLLOWING
WIDE VARIETY OF REMOTE CONTROLLED PERFORMANCE FEATURES
AUTO-LOCK MODE FOR EXACTSOURCE/VCO PITCH MATCHING
RACK MOUNTABLECABINETWITH REMOVABLE BRACKETS
The POLYFUSION model FF-1 Frequency Follower In short, the instrument you now play becomes a
is one of the most significant developments in the complete synthesizer controller -- a controller with
field of synthesizer controllers in recent years. This more flexibility, range, and responsiveness than the
instrument enables you to accurately control a keyboard which the synthesizer has relied on for
synthesizer with your flute, your voice, or any solong.
monophonic instrument you choose. Unlike other
frequency followers, the FF-1 is not committed for The FF-1 Frequency Follower has several special
use with only one specific instrument. This means performance features which enhance its already
that you can use the instrument pick-up you already formidable capabilities:
have (without modification) or even sing into a
microphone and obtain accuratepitchcontrolvoltages The AUTO-LOCK function compares the pitch of
every time. That's right, it can follow the most the audio signal with that ofthe VCOwhich is being
complex waveform and reliably extract the funda- controlled by the FF-1. Based on this comparison,
mental frequency without being confused by over- the AUTO-LOCK corrects the pitch control voltage
tones. The FF-1 also contains an envelope follower from the FF-1 to cause the VCO to exactly match
which supplies an additional control voltage for a the pitch of the input signal. The AUTO-LOCK
synthesizer VCA, one which is proportional to the will even correct for small errors in theVCO scaling!
loudness and articulation of the input signal. In this
way, the envelope of an acoustic instrument can be The INTERVAL feature allows you, at any time, to
matched by the synthesizer sound. Also, gate out- instantly change the musical interval between your
puts are provided to activate a synthesizer envelope input signal and the VCO being controlled by the
generator each time the input signal exceeds a pre- FF-1. This interval is tuned with the INTERVAL
determined loudness level. This level, called GATE control and is selected by means of a footswitch.
THRESHOLD can be varied with a panel control.
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