Keithley 2001 Operator's Manual page 355

1500
An overrange reading is expressed as +/-30,000 counts. For example, if a 50k resistor is measured on
the 20k range, the overranged reading will be expressed as follows:
30000
Operating considerations:
Before going into a stream mode, make sure the instrument is on the desired function and range. Once in
a stream mode, all front panel controls are disabled, and all SCPI and Common commands are ignored.
Before going into the SSTReam mode, make sure the data format byte order is correct for your computer.
IBM and IBM compatibles require the swapped byte order and HP requires normal byte order (see :FOR-
Mat:BORDer).
Important Note: Before going into a stream mode, the instrument must be in continuous initiation. If
continuous initiation is disabled (or you are not sure), send the following command to enable it:
:INITiate:CONTinuous ON
When the :AMEThod command is sent with one of the stream parameters, the instrument will go into the
stream mode and lock out all front panel controls, and ignore all SCPI and Common commands. When
a stream mode is entered, you must wait before addressing the Model 2001 to talk. The minimum delay
period is dependent on function and range (see
itself as follows:
Auto zero disabled (:SYSTem:AZERo:STATe OFF)
CALC 1 disabled (:CALCulate[1]:STATe OFF)
Line synchronization disabled (:SYSTem:LSYNc:STATe OFF)
For each valid function:
<function> = :VOLTage:AC
Auto range disabled (<function>:RANGe:AUTO OFF)
NPLC = 0.01 (<function>:NPLCycles 0.01)
Auto NPLC disabled (<function>:NPLCycles:AUTO OFF)
Resolution = 4H digits (<function>:DIGits 4)
Auto resolution disabled (<function>:DIGits:AUTO OFF)
Filter disabled (<function>:AVERage:STATe OFF)
Auto filter disabled (<function>:AVERage:AUTO OFF)
Reference disabled (<function>:REFerence:STATe OFF)
The stream mode is cancelled when a device clear (DCL or SDC) is sent to the Model 2001. Keep in
mind that the instrument will remain at the settings that it assumed for the stream mode. After cancelling
the stream mode, again wait before sending any more commands. (See
2001-900-01 Rev. K / August 2010
(Overranged SSTReam reading)
= :VOLTage:DC
= :CURRent:AC
= :CURRent:DC
= :RESistance
Table 4-30). In a stream mode, the instrument configures
Table
IEEE-488 Reference
4-30.)
4-197