S~Integrationperiod - Keithley 486 Instruction Manual

SECTION 4
IEEE-488 Reference
4.2.17 s
- integration Period
Purpose
Use to select the integration period and display resolution.
Format Sn
Parameters
SO Fast integration period (4-1/2d resolution)
Sl
Line cycle integration
period (5-I /2d resolution)
Default
Upon power-up or after a DCL or SlX conman d is received over the bus, the instrument will
return to integration period that was saved as the default condition
Description
The
integration
COInman
d controls the integration period and the usable resolution of the
Model 486/487. The fast integration period (SO) is 1.6ms.e~ with 4-l/2 digit display resolution.
The line cycle integration period depends on the selected frequency s&kg of the instrument,
which is selected from the front panel MENU (see paragraph 3.8.4). With the instrument set for
a line frequency of 5OH2, the line cycle integration period will be ZOmsec. For @Hz, the line cy-
cle integration period will be 16.67msec. Display
resolution
for line cycle integration is 5-l/2
digits.
Programming
Note
The line frequency setting (50 or 6OHd cannot
be performed over the bus. It can only be done
from the front panel (see paragraph 3.8.4).
Programming
Examples
0u-rPu-r 722; "SIX"
OUTPUT 722; "SOY
! Select line cycle integration.
! Select fast integration.
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