Keithley 3730

Series 3700A System Switch/Multimeter Reference Manual Section 11: TSP command reference
3700AS-901-01 Rev. D/June 2018 11-321
scan.mode
This attribute sets the relay action when the scan starts.
Type
TSP-Link accessible
Affected by
Where saved
Default value
Attribute (RW)
Yes
Reset
Scan reset
Recall setup
Create configuration script
Save setup
0 (scan.MODE_OPEN_ALL)
Usage
scanModeSetting = scan.mode
scan.mode = scanModeSetting
scanModeSetting
The present scan mode setting. Set to one of the following values:
▪ scan.MODE_OPEN_ALL or 0
▪ scan.MODE_OPEN_SELECTIVE or 1: See Details
▪ scan.MODE_FIXED_ABR or 2: See Details
Details
When this attribute is set to open all, channels on all slots are opened before a scan starts.
When this attribute is set to scan.MODE_OPEN_SELECTIVE, an intelligent open is performed.
Assuming all steps being scanned have a function value of "nofunction" with their DMM
configuration then:
• All channels and analog backplane relays used in scanning are opened
• Closed channels and backplane relays not used in scanning remain closed during the scan
If any step has a DMM configuration with a function set to any other value than "nofunction":
• Analog backplane relays 1 and 2 are opened on all slots
• Any commonside ohms backplane relays are opened on all slots
• Any amp channels are opened on all slots
• All channels and backplane relays involved in scanning are opened
• If a closed channel or backplane relay is not involved in scanning, it remains closed during the
scan
• All channels are opened on any bank that contains backplane relays that are involved in scanning
When this attribute is set to scan.MODE_FIXED_ABR, it is equivalent to setting
MODE_OPEN_SELECTIVE, except:
• All required backplane relays are closed before the start of the scan
• These backplane relays are not opened or closed during the scan
• These backplane relays do not open at the end of scan
Example
scan.mode = scan.MODE_OPEN_SELECTIVE
Sets the scan mode setting to open channels
that are used in the scan.
Also see
scan.reset() (on page 11-324)
Scanning and triggering (on page 5-23)