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Keithley 3721-ST User Manual

Keithley 3721-ST
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Series 3700A System Switch/Multimeter Reference Manual Section 6: Reading buffers
3700AS-901-01 Rev. D/June 2018 6-5
Recalling readings
When recalling readings, you must select a reading buffer that is not empty. See Selecting a reading
buffer (on page 6-3) for more information.
Readings stored in the buffer are displayed by pressing the REC key. Turn the navigation wheel or
use the CURSOR keys to cycle through the buffer's contents. A message is displayed if a buffer is
empty.
When recalling a buffer, the display contains the following information:
• Measurement reading for each entry is at the top right.
• Buffer location number is at the bottom left.
• Timestamp (on page 6-5) (if used) is positioned at the bottom right.
• Channel display (on page 6-5) or channel pattern (if used) associated with the reading for each
entry is at the top left.
Timestamp
When timestamps are enabled, they are shown in absolute time and stored as the number of seconds
in Universal Coordinated Time (UTC) format. Therefore, the displayed timestamp will show month,
day, and year, as well as hour, minutes, seconds, and fractional seconds.
Channel display
The returned value provides different information, based on what is opened or closed when the
reading is acquired:
• If no channel or channel pattern is closed when the reading is acquired, "None" is displayed.
• If only a single channel or backplane relay is closed, the channel number is displayed (for
example, 5003 or 5915).
• If a channel or backplane relay plus another backplane relay or other channel is closed, then the
channel number is displayed, followed by a + sign (for example, 3005+ or 3915+). The channel is
in the image unless the last close operation involved only backplane relays.
• If multiple channels and/or backplane relays are closed in a channel list, the last channel
specified is stored. Channels take precedence over backplane relays when stored. However, if
only multiple backplane relays are specified, then the first one is stored.
• If a channel pattern is closed, then the first eight characters of the channel pattern name are
returned (for example, mypattern1 is shown as mypatter).
Displaying other buffer readings and statistics
To display other readings in the reading buffer:
1. While still in the buffer recall mode, if viewing the data stored in the buffer, turn the navigation
wheel to increment and decrement the selected digit of the location number by one. Press the
navigation wheel and then turn it or use the CURSOR keys to move to the next digit that the
navigation wheel will change.
2. To exit from the reading buffer recall mode, press the EXIT (LOCAL) key.

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Keithley 3721-ST Specifications

General IconGeneral
BrandKeithley
Model3721-ST
CategoryMultimeter
LanguageEnglish

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