2600AS-901-01 Rev. B / September 2008 Return to Section Topics 6-7
Series 2600A System SourceMeter® Instruments Reference Manual Section 6: Range, Digits, Speed, Rel, and Filters
provides the best common-mode and normal-mode noise rejection, but has the slowest reading
rate. In-between settings are a compromise between speed and noise. The default power-on
speed setting is NORMAL (1 PLC).
Setting speed
Speed is set from the SPEED configuration menu and is structured as follows.
SPEED configuration menu
Press SPEED (or use the CONFIG menu) to display the menu:
• FAST: Sets speed to 0.01 PLC.
• MED: Sets speed to 0.10 PLC.
• NORMAL: Sets speed to 1.00 PLC.
• HI-ACCURACY: Sets speed to 10.00 PLC.
• OTHER: Used to set speed to any PLC value from 0.001 to 25.
NOTE The SPEED setting affects all measurement functions. After setting
speed, display resolution can be changed using the DIGITS key. For
the Model 2602A/2612A/2636A single-channel display mode,
pressing the SPEED key for the channel not being displayed will
result in a display message to change to the other channel before
setting speed.
Remote speed programming
Speed command
Table 6-4 summarizes commands to control speed. See Section 19 for more information.
Speed programming example
Use the NPLC command to set the speed. For example, send the following command to set the
speed to 10 PLC:
--Set NPLC to 10.
smua.measure.nplc = 10
Table 6-4
Speed command
Command
1
Description
smuX.measure.nplc = nplc Set speed (nplc = 0.001 to 25)
2
1
smuX = smua for the Model 2601A/2611A/2635A; smuX = smua (Channel A)
or smub (Channel B) for the Model 2602A/2612A/2636A.
2
The speed setting is global and affects all measurement functions.
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