User Guide
62
English
Clock settings
The method of selecting internal or external tempo clock is very similar to the above MIDI I/O 
on/off selection.
The two right-hand pads in the bottom row select AUTO mode (left) or the internal clock (right).
The two pads act as a “toggle pair”: that is, selecting one deselects the other. One pad will be lit 
bright blue (selected), the other dim blue (not selected). When shipped from the factory, Clock 
mode is set to AUTO, so the left-hand pad will be brightly lit. 
When INT is selected, Circuit’s BPM is dened only by its internal tempo clock. Any external 
clock will be ignored. When AUTO is selected, the BPM will be set by an externally applied 
MIDI clock at either the MIDI IN or the USB ports if a valid one is applied; if this is not the case, 
Circuit will automatically switch to its internal clock.
See also page 52.
IMPORTANT
For any changes made to Setup View to be retained, Circuit must be powered off by the 
rear panel power switch in the normal way. Disconnecting the external PSU may cause 
errors. 
Session loading problems
Circuit loads the last selected Session when it is powered-up. It is possible that if the power 
was interrupted while a session was being saved it may have become corrupted in some way. 
This might mean that Circuit ends up in some anomalous state at power on.
Although this is a very unlikely occurrence, we have included a method of turning Circuit on 
and forcing it to load a blank Session instead. To do this, hold down both Shift and Clear while 
turning Circuit on.
If any Sessions do become corrupted in any way it is always possible to delete them by using 
Clear Session (see “Clearing Sessions” on page 59)










