Gerhard Dangl's Astronomy Equipment

TC-80N3 - Images and timing diagrams

This page was made to show some important details of assembly and time switch behaviour of programable timer remote control Canon TC-80N3. To show the signals 3 volts were used. This voltage is certainly not present in real operation. Only timings of the signals should be shown here.

Note: I can not assume any liability for use of this page and for the results of this measurements.

Mechanical images of TC-80N3

TC-80N3 overview Cable soldering points on TC-80N3 PCB N3 plug detail

Selfmade cableset for cameracontrol with TC-80N3 and DSLRFocus

A: Selfmade new Parallelcable as described at the cablepage of Chris Venter.
B: Originalcable of TC-80N3 with new stereo jack - but uncutted and unshortened.
C: Programable timer remote control TC-80N3 with new longer cable and stereo plug.

C + B : for normal use with TC-80N3
A + B : for use with DSLRFocus (long exposure)

Timing diagrams of TC-80N3

In all diagrams the signals are displayed in same form.
Channel 1 (top) = Autofocus
Channel 2 (bottom) = Shutter
Both signals Autofocus (Channel 1) and Shutter (Channel 2) are Low-aktiv. This means that if a signal changes from up to down level the corresponding function will get activ in this moment. Viewing the diagrams pay attention on used time base in each measurement.

Notes:
Take a look at the double activating of focussignal in diagrams 4, 5 and 6.
The diagrams 7 and 8 are showing clearly the delay of 240ms between focus signal and shutter signal.

Diagram 1 Channel 1 = Autofocus
Channel 2 = Shutter
Timebase = 10ms/Div
Typical manually mechanical keypress with a delay of 35ms
TC-80N3 time diagram

Diagram 2 Channel 1 = Autofocus
Channel 2 = Shutter
Timebase = 1s/Div
Interval 5 seconds - exposure 1 second

Diagram 3 Channel 1 = Autofocus
Channel 2 = Shutter
Timebase = 1s/Div
Self timer with 5s delay time - exposure 1 second

Diagram 4 Channel 1 = Autofocus
Channel 2 = Shutter
Timebase = 2s/Div
Self timer with 10s delay time - exposure 1 second
TC-80N3 time diagram

Diagram 5 Channel 1 = Autofocus
Channel 2 = Shutter
Timebase = 5s/Div
Self timer with 25s delay time - exposure 1 second

Diagram 6 Channel 1 = Autofocus
Channel 2 = Shutter
Timebase = 5s/Div
Self timer with 40s delay time - exposure 1 second

Diagram 7 Channel 1 = Autofocus
Channel 2 = Shutter
Timebase = 0.2s/Div
Exposure with duration of 1s - electronically release with Start/Stop button
TC-80N3 time diagram

Diagram 8 Channel 1 = Autofocus
Channel 2 = Shutter
Timebase = 0.5s/Div
Exposure with duration of 2s - electronically release with Start/Stop button

Diagram 9 Channel 1 = Autofocus
Channel 2 = Shutter
Timebase = 5s/Div
Exposure with duration of 40s - electronically release with Start/Stop button
TC-80N3 time diagram

TC-80N3 - Images and timing diagrams

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02. May 2006

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Diagram 1	Channel 1 = Autofocus Channel 2 = Shutter Timebase = 10ms/Div Typical manually mechanical keypress with a delay of 35ms
Diagram 2	Channel 1 = Autofocus Channel 2 = Shutter Timebase = 1s/Div Interval 5 seconds - exposure 1 second
Diagram 3	Channel 1 = Autofocus Channel 2 = Shutter Timebase = 1s/Div Self timer with 5s delay time - exposure 1 second
Diagram 4	Channel 1 = Autofocus Channel 2 = Shutter Timebase = 2s/Div Self timer with 10s delay time - exposure 1 second
Diagram 5	Channel 1 = Autofocus Channel 2 = Shutter Timebase = 5s/Div Self timer with 25s delay time - exposure 1 second
Diagram 6	Channel 1 = Autofocus Channel 2 = Shutter Timebase = 5s/Div Self timer with 40s delay time - exposure 1 second
Diagram 7	Channel 1 = Autofocus Channel 2 = Shutter Timebase = 0.2s/Div Exposure with duration of 1s - electronically release with Start/Stop button
Diagram 8	Channel 1 = Autofocus Channel 2 = Shutter Timebase = 0.5s/Div Exposure with duration of 2s - electronically release with Start/Stop button
Diagram 9	Channel 1 = Autofocus Channel 2 = Shutter Timebase = 5s/Div Exposure with duration of 40s - electronically release with Start/Stop button