Cathode Corner SCTV Скачать руководство пользователя страница 23 | Manualshive

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Cathode Corner SCTV Скачать руководство пользователя страница 23

SCTV Clock Assembly Manual

1/24/22

23

CRT wiring

The CRT fits through the front hole and is held in place at the rear by the round clamp. It must be
rotated correctly to display the time right side up, with pin 1 down.
Pass the CRT socket wires through the hole in the rear face of the case.
Plug the 6-pin Molex plug into J2 on the PC board.
Plug the 5-pin Molex plug into J4 on the PC board.
The wires will reside in the notch on the side of the hole after the clamp ring is installed in the next step.

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Содержание SCTV

Страница 1: ...SCTV Scope Clock Kit Assembly and User Manual Copyright C 2022 Cathode Corner All rights reserved...

Страница 2: ...SCTV Clock Assembly Manual 1 24 22 2...

Страница 3: ...3 Table of Contents Introduction 5 Theory of Operation 6 PC Board Assembly 8 Cabinet Assembly 14 Initial Checkout 27 Final Assembly 27 Using Your Clock 31 Optional GPS receiver 32 Care of the Cabinet...

Страница 4: ...SCTV Clock Assembly Manual 1 24 22 4...

Страница 5: ...scope tube using artfully drawn numbers While most digital clocks use a seven segment display optimized for low cost and ease of manufacture the SCTV is optimized for aesthetic appeal The clock is sup...

Страница 6: ...provide regulated voltage outputs Moving on to the regulator the deflection voltage is the one actually regulated The other voltages follow this voltage in proportion to their turns ratios The regulat...

Страница 7: ...a CRT A sine wave on the Y plates and a cosine wave on the X plates give a circle If the phase difference is zero then the circle collapses to a slanted line If Y 0 the line is horizontal etc Each cha...

Страница 8: ...ole PC board components Ziploc bag with CRT and pot wiring parts Ziploc bag with hardware Seven laser cut plastic pieces coated in paper 3RP1 A CRT 12V wall power adapter If anything is missing please...

Страница 9: ...d board is shown below Refer to this photo to see how the parts fit Tools needed Soldering iron fine tip adjustable temperature preferred Solder high quality lead free or leaded 031 diameter or smalle...

Страница 10: ...1 USB jack J9 5 1 504 Trim pot 500K R1 6 2 103 Trim pot 10K R2 R3 7 2 black Socket strip 24 pin for U2 8 1 black Socket strip 5 pin for U2 9 1 DC power jack J1 10 1 Header 6 pin 10 J5 11 1 Header 7 pi...

Страница 11: ...er pin of each pot then reheat this pin while pressing the pot against the board to ensure that it fits tightly against the board Check also for square alignment to the board to keep a neat appearance...

Страница 12: ...nds to sit higher than the others due to the wires underneath it Solder one pin on each side then adjust it then solder the remaining pins Trim the excess lead length 20 21 Mount the heat sink for U1...

Страница 13: ...USB end of the Teensy with the edge of the board Solder the two 24 pin strips and the five pin strip to the Teensy holes Use care as there isn t much room to work on the Teensy and it has many small...

Страница 14: ...ded rigidity The base holds the PC board the front and rear faces and the cover A bag of cabinet hardware is used to assemble the cabinet The PC board is first mounted to the base assembly then the fr...

Страница 15: ...g skyward Place a cat PC board over the pot with the white square down so that the square is facing the pot Solder the three pins then trim the leads flush Repeat for the other two pots Each pot has a...

Страница 16: ...er being careful to remove any blobs Mount the remaining kitty board with 105L pot in the vise Insert the orange wire into the hole marked 1 with the insulation on the pot side of the board Solder it...

Страница 17: ...SCTV Clock Assembly Manual 1 24 22 17 Insert the little terminals into this block as shown in the chart below Pin Wire 1 Brown 2 Red 3 Orange 4 Yellow 5 Green 6 Blue...

Страница 18: ...e small 7 pin header block Orient it so that the large holes are facing you and the small slots are at the top This places pin 1 at the left end Insert the little terminals into this block as shown in...

Страница 19: ...he left of the notch in this orientation and pin 12 is to the right of the notch Solder the wires to the CRT pins per the table below Bend each wire s bare end into a V shape and hook it through the s...

Страница 20: ...r the two wires in each of the following three pairs of CRT wires Twist them by holding both wires out at a 20 degree angle from each other then passing one over the other repeatedly until they re in...

Страница 21: ...ieces are shipped with a protective paper coating on each side This coating needs to be removed from the pieces just before assembly It s not too hard to remove the paper from the solid acrylic pieces...

Страница 22: ...x1 2 screws into the two screw holes at the base Pot Installation See the photo on the next page to see how the pots are installed into the front panel Plug the 6 pin Molex plug with the two position...

Страница 23: ...otated correctly to display the time right side up with pin 1 down Pass the CRT socket wires through the hole in the rear face of the case Plug the 6 pin Molex plug into J2 on the PC board Plug the 5...

Страница 24: ...parallel to each other Bend each of the two screw tabs and the other two tabs so they are perpendicular to the metal so that they all lie flat on a table Install the 6 32x3 4 screw and nut into the c...

Страница 25: ...lt strip Take care to only peel the white paper and not the clear adhesive from the felt This may require tweezers Stick the end of the felt to edge of the CRT just behind the face in a direction that...

Страница 26: ...ess on the socket pins as these are fragile and may break off Press on the white ceramic only You may not be able to seat it fully but try to make the gap between CRT base and socket be less than 1 8...

Страница 27: ...can be checked with a plastic ruler against the two tabs at either side of the center of the front face Be sure that the felt is protruding 1 16 at the bottom and tighten the neck clamp on the CRT sn...

Страница 28: ...on the tape along the edge of the plastic piece to make it stick well Be sure to stick it to every slot so they will all be pulled up Start peeling up the tape at one corner of the paper It should li...

Страница 29: ...he small bits of paper from the text areas Find the top of the cup piece by feeling the edges for the smoother edge Press a square nut into each of the five slots on the cup from the top side Center e...

Страница 30: ...of the cover so that the two tabs fit into the slots Orient the cover so that one end is facing you Place the clock upside down onto the cover so that the two tabs on the top of the clock engage the...

Страница 31: ...force to press You will see a menu with three lines the top line highlighted Rotate the big knob to highlight Set Time and Date then press the knob again You will see the time and date displayed with...

Страница 32: ...e GPS time when the GPS receiver is unplugged It may lose a second since that s how often the GPS time messages are sent Care of the Cabinet The cabinet is made of acrylic plastic This plastic can be...

Страница 33: ...SCTV Clock Assembly Manual 1 24 22 33...

Страница 34: ...SCTV Clock Assembly Manual 1 24 22 34...

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