2640a/2645a environmental specifications – Fluke NetDAQ 2645A User Manual

Page 213

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Specifications

2640A/2645A Combined Specifications

A

A-3

Table A-1. 2640A/2645A General Specifications (cont)

Specification

Characteristic

Maximum Measurement Speed (Scanning
Rates)

2640A

Slow - 6 readings per second
Medium - 45 readings per second (60 Hz)
Fast - 143 readings per second
(20 configured channels)

2645A

Slow - 54 readings per second (60 Hz)
Medium - 200 readings per second
Fast - 1000 readings per second
(20 configured channels)
Fast single Channel - 400 readings per second

Accuracy of Medium Scanning Rate

= (Fast Accuracy + Slow Accuracy)/2

Additional error if “Automatic drift correction” is
turned off.

If the instrument was fully warmed-up at the
time drift correction was disabled, i.e. turned-
on at least 1 hour earlier; 1/10 of the 90 day
specification per

°

C change in ambient

temperature from the temperature when drift
correction was disabled.

If the instrument was NOT fully warmed-up at
the time drift correction was disabled; Add an
error equal to the 90 day specification for
instrument warm-up + 1/10 of the 90 day
specification per

°

C change in ambient

temperature from the temperature when drift
correction was disabled.

2640A/2645A Environmental Specifications

A-4.

Table A-2 provides a summary of the environmental specifications for the
2640A/2645A.

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