How do I store measurements in nonvolatile memory?
After the measurements are complete, you can save the reading buffer data to the nonvolatile
memory in the instrument.
To save the reading buffer data:
1. From the front panel, press the STORE key, and then select SAVE.
2. Select INTERNAL to save to internal nonvolatile memory.
3. Select one of the following:
â–ª SMUA_BUFFER1
â–ª SMUA_BUFFER2
â–ª SMUB_BUFFER1 (2602B, 2604B, 2612B, 2614B, 2634B, and 2636B only)
â–ª SMUB_BUFFER2 (2602B, 2604B, 2612B, 2614B, 2634B, and 2636B only)
4. The front panel displays Saving... This may take awhile.
5. Press the EXIT (LOCAL) key to return to the main menu.
For additional information, see Saving reading buffers (on page 3-5).
When should I change the output-off state?
Carefully consider and configure the appropriate output-off state, source function, and
compliance limits before connecting the 2600B to a device that can deliver energy (for
example, other voltage sources, batteries, capacitors, solar cells, or other 2600B
instruments). Configure recommended instrument settings before making connections to the
device. Failure to consider the output-off state, source, and compliance limits may result in
damage to the instrument or to the device under test (DUT).
The 2600B instrument provides multiple output-off states. The multiple states are required because
different types of connected devices (or loads) require different behaviors from the 2600B when its
output is turned off. Therefore, careful selection of the proper output-off state is important to prevent
damage to devices and instruments. This is especially true when the device can deliver energy to the
2600B, such as a battery or capacitor or when another SourceMeter instrument is connected across
the output terminals. In these situations, you should use an output-off state that isolates the
instrument from the device by either setting smuX.source.offfunc = smuX.OUTPUT_DCAMPS or
smuX.source.offfunc = smuX.OUTPUT_DCVOLTS, as applicable.
For example, a passive device such as a diode is not affected by a 0 V source connected across its
terminals when the output is turned off. However, connecting a 0 V source to the terminals of a
battery causes the battery to discharge.
There are other guidelines to follow when connecting the output of multiple 2600B instruments to get
a larger current or voltage. Please refer to the following references for more information:
• Combining SMU outputs (on page 2-27)
• Keithley application notes on tek.com/keithley
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