Step Operation; Basic Scan Procedure - Keithley 3700 series Reference Manual

Series 3700 System Switch/Multimeter Reference Manual

STEP operation

When the STEP key is pressed, the Series 3700 leaves the idle state and performs the channel
action associated with the first step in the scan list.
Measurements are then taken (if part of the scan). If a reading buffer was selected, the result
from the measurements will be stored. The measurement action, if started, completes. The
channel and DMM remain as configured until the next step in the scan is initiated. The DMM
configuration changes to the attribute settings tied to the channel in the next step.
When the STEP key is pressed, the Series 3700:
NOTE
1. Leaves the idle state. Opens channels involved in scanning along with channels that would
interfere with scanning such as AMP channels, analog backplane relays 1 and 2 on all slots,
common-side ohm backplane channels and other channels in banks involved in scanning.
2. Closes the first channel in the scan.
3. Waits for the programmed trigger event.
4. Takes the measurements (if part of the scan).
5. Takes the reading.
6. If a buffer was used, after a reading is taken, it is stored in the buffer.
7. The measurement action, if started, completes.
8. The channel and DMM remain as configured until the next step in the scan is initiated.
9. The DMM configuration changes to the attribute settings tied to the channel in the next step.
10. The instrument waits for another trigger event to measure the channel (if applicable).
11. The process repeats to step through all channels in the scan, with the channel and DMM
remaining as configured in the last step.

Basic scan procedure

Perform the following steps to run the presently configured scan:
1. Configure the channels for scanning as needed. Select (create if necessary) the reading
buffer to store measurements (if desired).
2. To start the scan:
Document Number: 3700S-901-01 Rev. A / August 2007
A scan list must have been previously created.

Front panel scan: Press the STEP key or the SCAN key
Section 7: Scanning
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