Garfield Electronics Doctor Click

via this auction

"This is the Ultimate Syncing device (see below for list of manufactures it can be used with)
A must have for any analogue synth geek and collectors alike, run all your vintage gear in Sync .
I've not used for some time but just gave it a run through Linking a system 100 Sequencer with a Memory Moog+an Obie DX and a ARP 2600 and it performed as it should.

The Doctor Click can be driven by both steady and wildly varying sources, including click tracks, tape codes (Roland, Oberheim, Linn, etc.), synthesizer clocks, live drumming, or its own internal crystal-based clock.
The outputs consist of nine timebases (7 are fixed, two are variable), two rhythmically triggered envelopes or LFO's (12V, .5V), trigger, trigger to click converter, inverter, delay, start, and step programming functions.
The Doctor Click click has two separate channels for producing the two variable timebases each with its own set of rhythm selector switches. The first row of labels is the timebase interpretation (ie. how many clicks) and the second row is notation interpretation (eg. quarter note, eighth-note triplet, etc). While that might sound confusing, it should make sense when it's sitting in front of you. Channel 1 (four bars to 64th triplet) has Envelope 1, Gate, Time Lag, and the Auto Programmer. Channel 2 (1/4 note to 32nd note) has Envelope 2 and the headphone output (which can also be used as a second arpeggiator clock).

With its extensive masking features, it can be synced to audio such as drum loops or drum machines without clock outputs.
It also has recording & programming features that can store up to 1k of events.
The gates and triggers have adjustable pulse width, and can inverted for either falling or rising edge. The envelope outputs can be used as gates or additional clocks.
Inputs: Pulse, Tape Code A/B, Tape Code C, External Metronome Trigger, Inverter In, Delay In, Reset, Play, Enter
Outputs: 12X (Roland CR68/78, SCI), 24X (MemoryMoog, MXR), 48X (LinnDrum, Roland MC-4, E-Mu), 64X (PPG), 96X (Oberheim DSX, DMX, DX), 348X (Fairlight), DIN Sync (Roland x0xbox, Korg), Gate (5V/15V), Trigger (5v/15V), Trigger to Click, Time Lag, Envelope 1, Envelope 2, Headphone, Metronome, Inverter Out, Delay Out, 5V Start, Ground Start

Knobs: Channel 1 (PW, Attack, Decay, Amount, Gate PW), Channel 2 (PW, Attack, Decay, Amount, Headphone Level), Metronome Level, Delay Amount

On 11-Feb-11 at 15:42:37 GMT, seller added the following information:

Just want to point out my use of the unit was predominately getting various devices to talk but also the creativity & fun you can have with switching time bases i.e running a drum machine say at 100bpm and changing the clock time to the arpeggiators on my pro 600 and Memorymoog+or Jupiter 6 (or whatever you have), running at dbl the bpm or in division and then trigger LFO's on my modulars with different clocks etc so running items synced with division of X bpm there a lot to the Dr click and I have not really explored all its potential. I never had a manual until recently never needed it... a pdf manual comes via courtesy of L.Hammond thx Lorne :)"