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Troubleshooting - Chapter 8
Q20 Reference Manual 117
Error Messages
Although the digital signal processing power in the Q20 is powerful and features
plenty of memory, the programmability of the unit makes it possible to come across
various error messages when exceeding its limitations. This is the Q20Õs limit
handling software kicking in. Depending on the message you get, you may have to
modify your Program by altering or removing unnecessary Blocks in order to
complete the task. The error message will vary depending on what limitations you
are attempting to exceed.
If you are using two reverb Blocks and you try to create a third, the following
message will appear:
DSP IS FULL
This means there is not enough processing power available to create the additional
effect. But there may be enough available to add an EQ, two pitch effects and two
delays (or some other combination).
If you have created four pitch Blocks and you try to create a fifth, the following
message will appear:
OUT OF LFOS
This means that there are no more available LFOs (low frequency oscillators),
which are required by all pitch effects. However, the larger reverb effects (Plate 2,
Room 2, Chamber 2 and Hall 2) use 1 LFO each. This means if you had three Pitch
Blocks and a reverb Block using one of the larger reverbs, you would not be able to
add a fourth Pitch Block. Also, the Pitch type ÒMono LezlieÓ uses two LFOs, which
means that when using it you will only have two LFOs available.
While the Q20 has a custom DSP chip that processes all the effects, some of the
effects available require that the main microprocessor assist in handling some of
this responsibility. On occasion, you may be using enough effects simultaneously
that no more processing power is available from the main microprocessor; example:
when you try to create more than three Multi Tap Delays in a Program. In these
cases, the following message will appear:
BLOCK COMBINATION NOT ALLOWED
Finally, if a Delay Block has its delay time to 5 seconds (5,000.0 ms), and you try to
create another Delay Block and set its delay time to 460 ms or higher, you will get
a ÒEffect Memory is FullÓ message. There is actually 5,455.9 ms of delay memory
available. Although you could create 8 Delay Blocks, they all share the available
delay memory. Therefore, when setting the delay time of each Delay Block you
would only have available the amount of delay memory not being used by the other
Delay Blocks. When all memory is being used, the following message will appear:
EFFECT MEMORY IS FULL