Tiptop Circadian Rhythms - Manual (Page 27)

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Before starting the application section, a few technical notes:
• The rising edge of the pulse triggers the clock. Many audio interfaces have AC coupling which
may invert the rising edge of the pulse. The clock input of the CR is designed with this in mind,
so AC-coupled audio interfaces should work fine with the CR. Align the beginning of the pulse
to the sample or bar/beat to advance the CR’s clock.
• In order to trigger reliably, the level of the pulse signal from your DAW may need to exceed a
few volts. The peak will likely be close to or at 0 dBFS in your DAW. Don’t worry about the signal
clipping; the signal is already a square wave.
• An oscilloscope comes in handy for diagnosing problems with sync pulses. A dual input model
allows the monitoring of latency between input and output as well.
• The musical note for 24 PPQN is a 1/96th note or 1/64th note triplet. Setting the DAW Timeline
resolution to one of these will help in aligning sync.