Multichannel Systems STG4002 Manual - Manual (Page 93)

Analog Output Signals
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Example 4: Influence of the length of a current pulse and a high load resistance. Current pulse
with programmed 50 μA for 1 ms and 1 ms interval and 1 M
 load resistance. The load resistance
is very high, the duration of the pulse and the interval are long. Please keep in mind that the load
resistance of 1 M
is parallel toMof the probe of the oscilloscope. That means, the load
resistance is reduced to 900 k
only
The long pulse is biphasic, 50 μA. Green trace = current output (+I), pink trace = TTL trigger output
from the Sync Out.
Result of Example 4: The current output signal is delivered negligible modified when
the duration of the signal and the duration of the interval is long, for example 1 ms.