Keithley 2302 User Manual

2-16 Basic Power Supply Operation
NPLC rate
The integration (reading) rate of the instrument is specified as a parameter based on the num-
ber of power-line cycles (NPLC), where 1 PLC for 60H
z line frequency is 16.67msec (1/60). In
general, the fastest integration time (0.01 PLC) results in increased reading noise. The slowest
integration time (10 PLC) provides the best common-mode and normal-mode rejection.
In-between settings are a compromise between speed and noise.
The NPLC RATE #1/#2 item of the menu is also used to set the reading rate for DVM mea-
surements. Note that it is not used to set the integra
tion rate for pulse current and long integration
measurements. These measurements are covered in Sections 3 and 4, respectively.
Average readings
The average reading count (1 to 10) specifies the number of measurement conversions to
average for each reading. For example, with a reading count of 5, each displayed reading will be
the average of five measurement conversions.
The AVER READINGS #1/#2 menu items are also used to set the average reading count for
D
VM measurements. Note that it is not used to set the average reading count for pulse current
(see Section 3) or long integration measurements (see Section 4).
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Keithley 2302 Specifications

General

Brand	Keithley
Model	2302
Category	Power Supply
Language	English