2 pulse types – Multichannel Systems STG3008-FA Manual User Manual
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STG3008-FA Manual
18
5.2 Pulse
Types
Three basic pulse types are available in MC_Stimulus II. You can create virtually any pulse by
combining different types.
Rectangular
Ramp
Sine wave
Note: The
time resolution
is
20 μs
. When you enter time steps that are not a multiple of 20 μs,
the length of the step is
internally
adjusted (rounded arithmetically, that is, 249 μs would be
rounded down to 240 μs, 250 would be rounded up to 260 μs) to a valid value. The minimum
voltage resolution is
1 mV
, the current resolution is
200 nA
. Please regard also the
minimum
and
maximum output voltage / current
of your STG version. If you enter voltage or current
values outside the STG's limit, the invalid value will be changed automatically when you download
the protocol. Cells with changed values will be highlighted in yellow.
Note: If you work
near the resolution limits
of the STG, the
output pulses
may
differ
from the
programmed pulses
. In this case, you should check the output with an oscilloscope. Please see
also the "Analog Output Signals" chapter.
Please note that the memory of the STG3008-FA is limited (64 MB). You will get an error message
if the memory is full.
For the digital Sync Out channel, only TTL pulses with bit patterns of 0 (LOW) and 1 (HIGH) can
be programmed. A logical state of 1 (HIGH) results in a 3.3 V output signal, and a logical state
of 0 (LOW) results in a 0 V output. Please note that the digital output is sent about 20 μs faster
than the analog output. Please see also the "Triggering Stimulation" chapter.
Rectangular pulse type