Model 2651A High Power System SourceMeter® Instrument Reference Manual Section 2: General operation
2651A-901-01 Rev. A / March 2011 2-29
INTERVAL: Sets the time interval between measurements (0 s to 999.999 s) when the count is
greater than 1.
DELAY: Sets the delay period between the trigger and the start of measurement (0 s to 999.999 s).
Front-panel triggering example
This example configures the trigger parameters to meet the following requirements:
• Manual triggering (TRIG key)
• Infinite trigger count (cycle indefinitely through measurement cycles)
• Interval (time between measurements): 1 s
• Delay (time from trigger to measurement): 2 s
To configure the trigger parameters:
1. Press the CONFIG key, and then the TRIG key.
2. Select TRIGGER-IN, and then press the ENTER key or the navigation wheel
.
3. Select MANUAL, and then press the ENTER key or the navigation wheel
.
4. Select COUNT, then select INFINITE, and then press the ENTER key or the navigation wheel
.
5. Select INTERVAL, set the interval to 1 s, and then press the ENTER key or the navigation wheel
.
6. Choose DELAY, set the delay to 2 s, and then press the ENTER key.
7. Press EXIT (LOCAL) to return to normal display.
8. Press the OUTPUT ON/OFF control to turn the output on, and then press TRIG. A 2 s delay
occurs before the first measurement. The unit cycles through measurements indefinitely with a
1 s interval between measurements.
9. Press the OUTPUT ON/OFF control again to stop taking readings.
Sink operation and interface
CAUTION
Carefully consider and configure the appropriate output-off state, source, and compliance levels
before connecting the Model 2651A High Power System SourceMeter
®
Instrument to a device that
can deliver energy such as other voltage sources, batteries, capacitors, solar cells, or other System
SourceMeter instruments. Program recommended instrument settings before making connections to
the device. Failure to consider the output-off state, source, and compliance levels may result in
damage to the instrument or to the device under test.
When operating as a sink (V and I have opposite polarity), the SourceMeter instrument is dissipating
power rather than sourcing it. An external source (for example, a battery) or an energy storage device
(for example, a capacitor) can force operation into the sink region.
For example, if a 12 V battery is connected to the V-Source (In/Out HI to battery high) that is
programmed for +10 V, sink operation will occur in the second quadrant (Source +V and measure - I).
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