Agilent Technologies B1500A Service Manual Page 100

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2-14 Agilent B1500A/B1505A Programming Guide, Edition 11
Remote Mode Functions
Measurement Modes
Multi Channel Sweep Measurements
Multi channel sweep measurement is performed as shown below. The source
channels apply the staircase sweep or DC bias output, and the measurement
channels perform one point measurement at each sweep step. Up to ten channels can
be used for both sweep output and measurement. Both voltage output mode and
current output mode are available for the source channels.
Figure 2-9 Multi Channel Sweep Measurements using High-Resolution A/D Converter
1. The primary sweep source is set by the WV or WI commands. And the
synchronous sweep source is set by the WNX command with the source
identification number N (N=2 to 10).
2. The sweep output is simultaneously started by a trigger, such as the XE
command. However, if a sweep source sets power compliance or forces
logarithmic sweep current, the sweep sources start output in the order specified
by the N value. Then the first output is forced by the channel set by the WI or
WV command.
3. After the hold time, the sweep sources wait for the delay time.
4. After the delay time, the measurement channel starts measurement. If you use
multiple measurement channels, the channels that use the high speed ADC with
the fixed ranging mode start measurement simultaneously, then other channels
perform measurement in the order defined in the MM command.
5. After measurement, the sweep source waits for the rest of the step delay time if
it is set, and the sweep source changes the output value.
Trigger (e.g. XE)
WT/WM/WV/WI
Stop value
Start value
Previous value
Time
: Measurement
Hold time
Delay time
Stop value
Start value
Previous value
Stop value
Start value
Previous value
Voltage or current
WNX
WNX
SMU1
SMU2, N=2
SMU10, N=10
Step delay time
Step delay time
Delay time
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