User manual

In this section:
Scanning fundamentals ..................................................... 8-1
Scan and step counts ........................................................ 8-7
Basic scan procedure ........................................................ 8-7
Front panel scanning ....................................................... 8-10
Bus operation scanning ................................................... 8-12
Hardware trigger modes .................................................. 8-18
Scanning fundamentals
A scan is a series of steps which open and close switches to be optionally
measured. The step-by-step flow is defined by the trigger model.
The Keithley Instruments Series 3700 System Switch/Multimeter can scan
channels with up to six Keithley Instruments switching modules installed. Each
scan channel can have its own unique setup. Aspects of operation that may be
uniquely set for each channel include function, range, rate, AC bandwidth, REL,
filter, digits, math, offset compensation, temperature transducers, limits, volts
dB, and so on.
NOTE If desired, readings for scanned channels may be automatically stored
in a specified reading buffer (see Buffer: Data Storage and Retrieval
(on page 7-1)).
You can configure and execute scans from the front panel, remotely over the
bus, or through the Series 3700 web interface. The steps are executed in the
order that they are added. When adding a range of channels, they are added to
the end of the existing scan list.
For example:
1003:1005 will add Channels 1003, 1004, and 1005 to the list as three
distinct steps, with Channel 3 added first, Channel 4 added second, and
Channel 5 added third.
Adding individual channels in the order of 1003, 1005, and 1004 will add the
channels to the list as three distinct steps with Channel 3 added first,
Channel 5 added second, and Channel 4 added last.
Section 8
Scanning