Dutchtronix AVR Oscilloscope Clock

The Dutchtronix AVR Oscilloscope Clock is a kit that will display an analog clock on an oscilloscope in X-Y mode. It uses a AVR microcontroller, a TLC7528 dual DA converter and a  PCF8563 real time clock.

ScopeClock
Dutchtronix AVR Oscilloscope Clock 2.0

This is the 2.0 board. The newer versions of the kits are sold by Sparkfun.

I have tried out the Scope Clock on a couple of different oscilloscopes.

Tektronix 604 Monitor.

The Tek 604 Monitor is a X-Y monitor with intensity control on the Z input. It has a flat and sharp screen. Funny thing about the 604 is that it has no fan and no power indicator and you will not display much if you don’t get the signals right. So when i first powered it up i thought it was broken. Like many Tek machines of this era it is well built and engineered.

Scope Clock on Tek 604

Tektronix 465 Oscilloscope

The Tektronix 465 is a single beam, dual channel 100 MHz Oscilloscope. Mine wat built around 1973. Everything on the 465 makes it clear this machine is from a different time. The controls are sturdy, the illumination are little light bulbs and not LEDs. The scope is not just electronically complicated but also has many mechanical parts just to put the actual switches in the best spot in the signal path and put the control of the switch on a logical place on the front panel.  The schematics are hand drawn. The X-Y mode is a position on the timebase.

Scope Clock on a Tek 465, scale illumination and intensity turned up.
Scope Clock on a Tek 465
Magnification of Scope Clock on a Tek 465

Fluke PM3092.

The Fluke PM3092 is a dual beam, 4 channel, 200 MHz analog scope with digital control.  It has the disadvantages of an analog scope combined with the confusing controls of a modern scope. The Fluke and I are not good friends. The X-Y mode is hidden in “TB-mode”, soft-menu “X-DEFL” off, channel 1 off.

Scope Clock on Fluke PM3092
Magnification of part of the Scope Clock image on a Fluke PM3092

HP 546xx series Oscilloscopes.

The HP 54602B and 54622D are digitising oscilloscopes, basically a computer with fast AD converters.  The display is a monochrome CRT. The controls are well designed and present an interface that is easy to understand for both traditional analog scope users and users more used to digital systems.  These were built around 1996. The X-Y mode can be set by pressing “Main / Delayed” and then the softmenu “X-Y”.

AVR Scope Clock on a HP 54602B
Scope Clock on HP 54622D
Magnification of part of the Scope Clock image on a HP 54622D

4 thoughts on “Dutchtronix AVR Oscilloscope Clock”

  1. Did you have to do anything special to interface to the 604? In particular, did you have to do anything with the Z input ?

  2. No, as far as i can remember this version of the ScopeClock did not have intensity control. The Z is left unconnected and the intensity of the scope is turned up a little.

  3. Well, the original is from Dutchtronix and the page there states “This kit is no longer available but I am in the process of ordering a new batch of PCBs. I will make these PCBs available soon. Please email me if interested.” (see http://www.dutchtronix.com/ScopeClockH3-1-Enhanced.htm ). And then there is the truly gorgeous scope clock from Cathode Corner ( http://www.cathodecorner.com/sc200c.html ) which uses a sine-cosine oscillator to make real analog circles and segments. And i have just found the one from sgitheach ( http://www.sgitheach.org.uk/scope2.html ). But none of these seem to be actually selling via a webshop.

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