Fluke NetDAQ 2645A - Manual (Page 61)

Preparing for Operation
Instrument Preparation
2
2-29
Reviewing and Setting the Line Frequency 2-31.
Perform the procedure in Figure 2-19 to review or set the line frequency. Line
frequency selection allows the instrument to optimize internal circuitry for
maximum precision. (See Figure 2-20 for examples.)
•
Line Frequency Choices Select 50 Hz or 60 Hz as the frequency of the
primary power when an ac source powers the instrument.
COMM
Press the COMM key to review the Line Frequency setting, or press and hold the
COMM key for 3 seconds to set the Line Frequency.
Press the up/down arrow keys until LinE (Line Frequency) appears in the
primary display (comm appears in the secondary display).
ENTER
Press the ENTER key. LinE appears in the secondary display and the current
LinE frequency setting is in the primary display.
For Line Frequency set procedures, press the up/down arrow keys to select
50 (Hz) or 60 (Hz) line frequency (current setting appears bright).
ENTER
Press the ENTER key to exit. (Pressing any other function key will cancel set
operations.)
Figure 2-19. Reviewing and Setting the Line Frequency