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AM5(e) Classic Instruction Manual
7.2
60 Hz FILTER
The 60 Hz high-pass filter is provided to eliminate frequencies of 60 Hz or lower.
Power line interference due to 60 Hz, 50 Hz or lower components may cause erratic
readings on the display. Connect this filter to eliminate intererence as follows:
1.
2.
7.3
L/F 15 kHz MEASURE FILTER
When the MEASURE L/F 15kHz function is selected, a low-pass filter is connected to
the front end of the measurement circuitry, effectively eliminating high-frequency
components. The characteristics of this filter are the same as those shown in Figure
7–4. For more details on MEASURE selections refer to Section 6.
NOTE: As is the case with the MEASURE LEVEL FREQ function, average
detection is used with the MEASURE L/F 15 kHz function.
None of the Noise Weighting Filters, previously described and illustrated in sub-
section 7.1, will be active (even if previously selected) when L/F 15 kHz or LEVEL
FREQ functions are being used.
November 19, 1997
(18-0047)
Press right filter key to connect the 60 Hz filter. 60 Hz LED is lighted.
Press right filter key again to disconnect the filter. 60 Hz LED is not
lighted.
(END OF SECTION 7)
AM5 CLASSIC FILTERS
Page 7-8
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