N678Xa Output Bandwidth - Keysight Technologies N6705C Operating And Service Manual

6 Advanced Source, Measurement, and Control
voltage limit) or LIM- (negative voltage limit) status flag is set to indicate that either the positive or
negative voltage limit has been reached.
As shown by the horizontal portions of the load line, when the unit is sinking power, the output current
may continue to increase in the positive or negative direction as more current is forced into the unit.
Once the current is exceeds 112% of the rated current of the range, the output will shut down, the
output relays will open, and the OC and PROT status bits will be set.

N678xA Output Bandwidth

Keysight Models N678xA SMU have several voltage bandwidth modes that let you optimize output
response time with capacitive loads.
The Low bandwidth setting provides stability with a wide range of load capacitors. Additional
bandwidth modes provide faster output response when the load capacitance is restricted to smaller
ranges.
If capacitive loads cause the output to oscillate on the default (Low bandwidth) or any of the other
bandwidth settings, a protection function will detect the oscillation and latch the output off. The
condition is annunciated by the OSC status bit. At power-on the oscillation protection function is
enabled.
From the front panel:
Press the Settings key to access the Source Settings window. Navigate to and select Advanced.
Select a bandwidth according to the following load capacitances and load lead lengths:
Setting Load Capacitance
Low 0–150 μF
High1 0–1 μF
High2 0–7 μF
High3 7–150 μF
Refer to Keysight N678xA SMU Wiring
198
Sensing Maximum distance from sense point
to load capacitor
Local or remote
Remote only
Remote only
Remote only
for information on allowable full lead lengths.
Full lead length
6 inches (15 cm)
6 inches (15 cm)
6 inches (15 cm)
Keysight N6705C Operating and Service Guide
ESR @100 kHz
50 to 200 mΩ
50 to 200 mΩ
50 to 200 mΩ
50 to 200 mΩ