Roland SPD-20 User Manual

Adjusting the Trigger Signal Detection Time (Scan Time, Scn)
fig.60-a
(Available Settings) 0.0–0.3 ms (0.1 ms steps)
00–30 appears in the display.
The trigger signal waveforms produced by some types of drum pads or acoustic drum triggers have
rather long attack times, which can result in unstable volume levels, even when the same force is used
to strike the pad; or can result in unreliable detection of striking force. In such cases, by adjusting the
amount of time between the striking of the pad and detection of that strike (Scan Time), you can achieve
the correct detection of striking force.
fig.60-b
For reliable detection of Trigger signal output, adjust the time for reading the trigger signal (Scan Time).
For more on how to set these values, refer to p. 48.
To maximize the speed at which sounds are triggered, set the Scan Time value as low as possible.
For P 1 and P 2 trigger types, increase the Pd7 Scan Time values. For K 1 and K 2, increase the Kd7
Scan Time values.
When you strike the pad, the strength with which the pad is struck (velocity) is shown in the display,
with six possible levels. When the pad is struck hard, the velocity is set to a value of 127.
fig.95
NOTE
Scan TimeScan Time
A Pad with a slow Trigger
signal waveform attack
PD-7
00
Time
Level
Time
Level
MEMO
Velocity
Strength
of Striking
Hard
127
100–126
75–99
50–74
25–49
1–24Soft
51
1
2
3
4
5

Roland SPD-20 Specifications

General

Pads	8
MIDI	Yes
Pad Type	Rubber
Power Supply	AC Adapter
Type	Electronic Drum Pad
Instruments	210
Effects	Reverb, EQ
Outputs	Headphones