Front-Panel Operation
Test Modes 4
4-37
The gate input signal may a pair of pulses or a change of level. If pulses, the first starts
the test, the second ends it. If the gate is a change of level, the test period is set by the
time the gate is at the active level. Gate polarity can be set to be active high or low.
In the Gated mode, the MUT and reference meter dials may advance more than the
amount measured by the 6100B Energy Option. This is because the dial will advance in
the period before the gate signal becomes active. The count displayed by the 6100B
accurately reports the pulses received during the time the gate is active.
4-77. Packet Mode
In Packet Mode, the power from the main output terminals is timed to deliver the
requested amount of energy. This has the advantage that the dial advance on the MUT
will closely match the expected amount, unlike other modes which have settling times
and warm-up periods. See Figure 4-44.
gdw41.bmp
Figure 4-44. Packet Mode Configuration
The size of the “packet” of energy will not be exact due to switching, ramping, and
settling times of the main output. If “Output “On” Soft Start” is enabled in the Global
Settings menu, the timing error may become excessive. The effect of the errors is reduced
as the test time increases.