8-2 Data Store Models 2500 and 2502 User’s Manual
Data store overview
The Model 2500 has a data store (buffer) to store from 1 to 3000 voltage bias source val-
ues and measurement readings for both channels. Each reading includes the buffer loca-
tion number and a timestamp.
The data store buffer also provides statistical data on the measured readings stored in the
buffer. These include minimum, maximum, mean, and standard deviation.
NOTE For a sweep that has a finite sweep count, the readings are automatically stored
in the buffer.
Front panel data store
Storing readings
Perform the following steps to store readings:
1. Select the desired measurement configuration using the MSR1, MSR2, RATIO, or
DELTA keys.
NOTE Data storage cannot be performed when the dual-channel display mode is
selected.
2. Set the source value(s) using the SRC1 and SRC2 keys, and turn on the output.
3. Press the STORE key.
4. Use the EDIT , , , and keys to specify the number of readings to store in the
buffer.
5. Press ENTER. The asterisk (*) annunciator turns on to indicate data storage operation
is in process. It will turn off when the storage is finished, at which point you can turn
off the output.
Recalling readings
Readings stored in the buffer are displayed by pressing the RECALL key. The source and
measure readings are positioned at the left side of the display, while the buffer location
number and timestamp are positioned at the right side.
NOTE RECALL cannot be used with the dual-channel display mode. RECALL will dis-
play buffer data of the presently selected function (MSR1, MSR2, RATIO, or
DELTA). You can display these different functions while the recall mode is active
by pressing the appropriate function key.
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