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Nixie Tube Clock ‘Spectrum 18 / 1040’

Issue 7 (15 June 2018)

www.pvelectronics.co.uk

- 12 -

4.4

Low Voltage Generator components.
Fuse
D1, D2, D3 (1N5819)
C1, C2 (220uF)
J1 (12V IN), L1
IC1 (LM2576)

Depending on the fuse you have been supplied with, the leads may
not fit through the holes. If this is the case, simply wet the 2 pads
with solder and pre-cut the fuse leads very short. Solder the fuse
leads onto the top of the two wetted pads.

Bend the legs of IC1 to a 90 degree angle so that the component
lies along the PCB. Solder it so it does not quite touch the PCB. But
is approx 2-3 mm from it. (1/8”)

C1 and C2 are polarized. The light stripe on the body of the
component indicates the negative side. This must match the cross
hatched side on the PCB Marking.

Please note that J1 and L1 must be soldered on the bottom
of the PCB in all cases.

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Содержание Spectrum 1040

Страница 1: ...Nixie Tube Clock Spectrum 18 1040 Issue 7 15 June 2018 www pvelectronics co uk 1 Assembly Instructions And User Guide Nixie Clock Type Spectrum 18 Spectrum 1040 ...

Страница 2: ...A support 6 20 July 2016 Specifics for new Stainless Steel Case 5 15 October 2015 New PCB Dated 1 Oct 15 Alarm Aux removed HV Disable Pads removed For firmware V2 0 onwards 4 20 August 2015 Minor errors corrected 3 1 June 2015 Changed resistor values 2 15 Feb 2015 Errors in Resistor values corrected Resistor networks not polarized 1 10 Feb 2015 New document ...

Страница 3: ...on lamps 11 colon neon modes including AM PM indication top bottom or left right railroad slow or fast etc Seconds can be reset to zero to precisely the set time Programmable night mode blanked or dimmed display to save tubes or prevent sleep disturbance Rear Indicator LEDs dim at night to prevent sleep disturbance Weekday aware Master Blank function to turn off tubes and LEDs on weekends or durin...

Страница 4: ...ges generated by this circuit can give a potentially LETHAL ELECTRIC SHOCK DISCLAIMER This product is supplied as a kit of parts intended only for suitably qualified electronic engineers who are suitably qualified and experienced in electronics assembly and are familiar with safe procedures for working with high voltages The supplier his agents or associates accept no liability for any damage inju...

Страница 5: ... hot air gun will be needed to shrink the heat shrink tubing over the neon lamp wires 2 2 Materials you will need Solder lead tin solder is highly recommended USE LEAD TIN SOLDER Lead free solder as now required to be used in commercial products in Europe has a much higher melting point and can be very hard to work with Desoldering wick braid can be useful if you accidentally create solder bridges...

Страница 6: ...Q2 Q4 2N7000 MOSFET Diodes D1 D3 1N5819 D4 5mm Yellow LED D5 5mm Green LED D6 5mm Yellow LED RGB1 RGB8 RGB 5mm LED common anode Integrated Circuits IC1 LM2576 5V voltage regulator IC2 PIC16F1938 in socket IC3 IC4 HV5622 in socket IC5 Not Installed Miscellaneous L1 100uH inductor AM1 PM1 AM2 PM2 4mm wire ended neon lamp ALARM SET ADJ DST Miniature push button IC2 Socket 28 Way narrow IC socket for ...

Страница 7: ...trolytic 2 0 1F or 0 22F 1 Transistors MPSA42 1 2N7000 MOSFET 3 Diodes 1N5819 3 5mm Green LED 1 5mm Yellow LED 2 5mm RGB LED 6 Integrated Circuits LM2576 5V voltage regulator 1 PIC16F1938 8 bit microcontroller 1 HV5622 2 Miscellaneous 100uH inductor 1 4mm wire ended neon lamp 4 Miniature push button 4 28 way narrow IC Socket for IC2 1 PLCC44 IC Socket 2 2 1mm PCB power socket 1 Surface mount 3 5mm...

Страница 8: ...look like one of the pictures below It can easily be confused for a capacitor It is a self resetting fuse 3 4 SPECIAL NOTE IMPORTANT Please note that several components can be possibly mounted on either side of the PCB and white component print for the part is on both sides of the PCB This is to offer maxiumum flexibility of the kit For our clear cases most components will be soldered on the top t...

Страница 9: ...THE ONE PICTURED 4 1 Assembly of the tube sockets Remove the protective film from both sides of the six laser cut tube socket holders and identify the side that is engraved SOCKETS THIS SIDE or simply SKT For each socket holder you need to push in 11 socket receptacles Push them in from the SOCKETS THIS SIDE side Push them with the 2 open jaws going in first Look at the photo below ...

Страница 10: ...s firmly into place until they stop You will end up with 6 socket assemblies Put them to one side Do not solder them to the PCB yet 4 2 Resistor Networks RN1 RN6 Solder the 6 resistor networks on the bottom side of the PCB as shown below These parts are not polarized so the orientation does not matter ...

Страница 11: ...into the PCB so that the flat is aligned as shown below There is only one way the socket can be inserted so it should be impossible to orient incorrectly be sure to push the socket fully in so that the larger diemater portion of the socket receptacles goes into each hole The plastic socket should be 2 3mm from the PCB After soldering all 66 contacts clip off the lower very thin part of the connect...

Страница 12: ...s with solder and pre cut the fuse leads very short Solder the fuse leads onto the top of the two wetted pads Bend the legs of IC1 to a 90 degree angle so that the component lies along the PCB Solder it so it does not quite touch the PCB But is approx 2 3 mm from it 1 8 C1 and C2 are polarized The light stripe on the body of the component indicates the negative side This must match the cross hatch...

Страница 13: ...robe on the GND test point and the red probe on the 5V test point The voltage should measure between 4 8 and 5 2 Volts If not disconnect power and check your work Do not proceed with the assembly until the error is corrected Once the test is completed disconnect the power 4 6 High Voltage Generator Components 6 Way female header 28 Way IC socket for IC2 R1 6 8 KΩ VR1 1 KΩ Potentiometer HV Module S...

Страница 14: ...s to the main PCB 6 way female header on bottom of PCB and VR1 and R1 on the top of the PCB Also solder the socket for IC2 noting the orientation of the small notch at one end Here you can see how the 6 way female header is soldered on the bottom of the PCB And now you can push the HV Module into place ...

Страница 15: ...g Adjust the brass screw on VR1 until the HV is close to 170V Disconnect power and remember that the HV module can still hold charge at 170V carefully remove the HV module and place it safely away until later 4 8 Tube Drive Components R2 R7 8 2 KΩ C5 C8 C9 100nF Sockets for IC3 and IC4 Be very careful when inserting the two IC sockets Make sure the flattened corner of the IC socket is oriented wit...

Страница 16: ...he PCB will sit neatly during the tube test With great care and looking carefully at tube alignment tube faces forwards insert six IN 18 Nixie Tubes into the sockets Power up the PCB and watch the tubes They should count 0 through to 9 and back to 0 again and repeat this sequence If any digits or tubes do not light go back and check your work If any tube does not light swap it with a known working...

Страница 17: ...k 17 4 13 C6 0 22F C7 100nF 2 Way pin header and jumper NOTE C6 and the 2 Way jumper need to be soldered on the bottom side of the PCB if you are mounting the clock in the Visio or Stainless Steel Cases Take care that C6 is mounted with its arrows matching the arrows on the PCB ...

Страница 18: ... shown below The longer lead on the LEDs goes in the hole marked STAINLESS STEEL CASE Solder the two jack sockets and four switches on the BOTTOM of the PCB non tube side Do not solder the three LEDs at this stage This is covered in the guide to the Stainless Steel Case To solder the GPS RFT and PIR connectors First wet one pad on the PCB with solder Then place the connector in position and re tou...

Страница 19: ...tors These are not supplied and not installed because the RGB lighting from the tube LEDs provides sufficient illumination of the colon neons Start by bending the leads of each RGB LED as shown below noting the orientation of the longest lead If you follow the bending instructions above then the longest lead should go into the hole marked with 2 small circles at each RGB LED location Solder each L...

Страница 20: ...ion modes are implemented see the configuration setup later in the manual The AM1 and PM1 neons are taller and mounted on the rear 2 locations The leads of the two rear neons may need to be extended Use pieces of wire cut from leads of resistors to extend the wires so they are at least 500 2 long Next cut the clear heat shrink tubing into 8 lengths 4 lengths of 20mm and 4 lengths of 45mm ...

Страница 21: ...une 2018 www pvelectronics co uk 21 Slip the insulation over the neon lamp leads and with a hot air gun shrink the tubing Finally solder the neons in place on the PCB with the taller neons at the back The glass cover tubes can be placed over later ...

Страница 22: ...nds the seconds will become highlighted Continue holding the button a further 2 seconds until the clock displays in this format 00 XX 99 The 99 in the seconds digits tells you that you are in the configuration menu In configuration mode the hours digits diplay the current parameter being adjusted and the minutes digits display the current value stored against the parameter For each parameter and r...

Страница 23: ...ll days 10 Colon neons mode 0 Both off 1 AM PM Indication left right 2 AM PM Indication left right flashing 3 AM PM Indication top bottom 4 AM PM Indication top bottom flashing 5 All slow flashing 6 Slow flashing left right 7 All flashing 8 Both illuminated 9 Railroad fast 10 Railroad slow 11 Colon neons during night dimmed mode 2 As per parameter 10 12 Radio time signal source3 0 to 3 reserved 4 ...

Страница 24: ...hen load all the original settings and restore the value to 0 You can also restore factory configuration settings by pressing and holding SET as you power up from a cold start A cold start is a startup with a fully discharged Supercapacitor or with the Supercapacitor jumper removed 18 Snooze period 0 6 minutes default 1 9 minutes 2 12 minutes 3 15 minutes 19 Reserved 20 Time Calibration Factor 0 9...

Страница 25: ...DJ button to set the hours Proceed in this fashion to set the calendar Year Month and Day Finally briefly Press SET again to revert to normal clock operation Showing Date From time display mode briefly press SET button Date will be shown for 5 seconds then revert to time display Auto Date Display Setting parameter 27 to 1 or 2 will enable auto display of date between 50 and 55 seconds past each mi...

Страница 26: ...ly overridden however the system will re set the DST status again at the next valid time sync Note that GPS time data does not contain DST information so the DST status will need to be set manually in GPS sync mode as well as manual time set mode Calibration of Timekeeping Accuracy Over time you may observe the clock runs faster or slower than an accurate time standard You can finely adjust the ti...

Страница 27: ...colour cycling effect at your choice of speed 6 1 Entering RGB LED menu Press and hold the DST button until the display shows 00 0 00 NX3 will not be lit For each hour 0 23 you can set a custom colour Each custom colour can have your choice of BLUE GREEN and RED values from 0 colour off to 8 maximum brightness Mix the colours using the ALARM ADJ SET buttons Use low values 1 2 and 3 for low brightn...

Страница 28: ...tronics co uk 28 Colours are displayed live during RGB menu In the example above between 11 and 12 hours the LEDs will be purple 8 red 0 green and 8 blue In the example below between 19 and 20 hours the LEDs will be blue with a hint of green 0 red 2 green and 8 blue ...

Страница 29: ...ified hour The speed of the cycling will then be governed by the GREEN value 0 very slow change 9 very fast change This auto colour cycling mode is explained in the picture below Red 9 therefore Auto Colour Cycling is enabled for 12 13 hours Green 3 so speed is 3 Blue value has no effect Note The colours do not cycle live during Auto Colour Cycling setup The cycling starts only during normal time ...

Страница 30: ...nsmits the time and temperature data which can be received by our XTERNA compatible clocks The Spectrum kits are compatible if equipped with a receiver adapter module See next page Additional data is transmitted such as battery voltage and GPS fix time Supplied as a complete hobby kit of parts For shipping reasons batteries are not included the kit takes approx 30 40 minutes to comfortably assembl...

Страница 31: ...tion Range 10 to 30 Metres 30 to 100 ft 7 3 XTERNA Adapter Spectrum kits require a small low cost adapter to be plugged into the GPS socket to be able to receive the time and temperature broadcasts from the XTERNA Module 7 4 Configuring for XTERNA Reception Set parameter 12 to value 5 Also parameters 14 15 16 need to be set to specify your location s offset from UTC ...

Страница 32: ...emperature will not be displayed until after the first synchronisation Set Celsius or Fahrenheit using parameter 29 Fahrenheit 1 Celsius 2 Temperature is displayed between 30 and 35 seconds past each minute Celsius is displayed with 0 5 C resolution Fahrenheit is displayed with 1 F resolution Positive and negative temperature is indicated by the left hand neons Neon indicator PM2 acts as a decimal...

Страница 33: ...tton sequentially and finally exiting back to time display Please see the table below Stats Menu Item Description Range of Values Example 1 Minimum Temperature in last 24 hours 40 C to 60 C 40 F to 140 F 2 Maximum Temperature in last 24 hours 40 C to 60 C 40 F to 140 F 3 Voltage of XTERNA Battery 2 5V to 5 0V 4 Time required for last GPS fix loaded into the TCXO 0 to 98 sec 99 no fix at last attem...

Страница 34: ... for GPS or WiFi Synchronisation Set parameter 12 to value 4 Set the baud rate in parameter 13 Set parameters 14 and 15 for the hours and minutes your time zone is offset from the synchronisation source This is usually only whole hours Set parameter 16 to identify whether the offset is minus 0 or positive 1 of the time source 8 2 Connecting a GPS receiver The clock has been designed for and tested...

Страница 35: ...f the High Voltage generator tubes and RGB LEDs when the PIR time period has expired Configuration Parameter 17 0 No PIR installed default 1 15 seconds 2 30 seconds 3 1 minute 4 2 minutes 5 5 minutes 6 10 minutes 7 15 minutes 8 20 minutes 9 30 minutes It is important to remember that the function does not override Night Blanking and Master Blanking so when the clock is in Night Blanking or Master ...

Страница 36: ...ssue 7 15 June 2018 www pvelectronics co uk 36 10 RGB LED OVERRIDE Pads are provided at the rear of the PCB to allow a user to connect a remote switch for switching off the RGB LEDs Shorting the two RGB pads will switch off the RGB LEDs ...

Страница 37: ...Nixie Tube Clock Spectrum 18 1040 Issue 7 15 June 2018 www pvelectronics co uk 37 11 CIRCUIT DIAGRAM ...

Страница 38: ...Nixie Tube Clock Spectrum 18 1040 Issue 7 15 June 2018 www pvelectronics co uk 38 ...

Страница 39: ...Nixie Tube Clock Spectrum 18 1040 Issue 7 15 June 2018 www pvelectronics co uk 39 ...

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