Specifications

Frequency Count
Displays the frequency of the signal on whose response the marker is
positioned. The marker must be positioned at least 20 dB above the
noise or the intersection of the signal with an adjacent signal, and
more than four divisions up from the bottom of the display.
Counter resolution is normally a function of frequency span, but may
be specified directly using ISHIFT_] (YJ
Frequency Count Accuracy
Frequency Span
Accuracy
5100 kHz
<&[frequency reference error x displayed frequency
+ 2 x frequency counter resolution]
>lOO kHz to 1 MHz <*[frequency reference error x displayed frequency
+ 10 Hz + 2 x frequency counter resolution]
>l MHz
c&l10 kHz + freauencv counter resolution1
Resolution
Resolution Bandwidth
3 dB bandwidths of 10 Hz to 3 MHz in a 1, 3, 10 sequence. Bandwidth
may be selected manually or coupled to frequency span (AUTO mode).
3 MHz
3 kHz to 1 MHz
3 dB Bandwidth Accuracy*
Bandwidth
7
Accuracy
&20%
510%
10 Hz to 1 kHz
f20%
*30 kHz and 100 kHz bandwidth accuracy figures only applicable
190% relative humidity, 140 “C.
60 dB to 3 dB Bandwidth Selectivity Ratio*
Bandwidth
) Selectivity
100 kHz to 3 MHz <15:1
3 kHz to 30 kHz <13:1
30 Hz to 1 kHz <12:1
*60 dB points on 10 Hz bandwidth are separated by ~100 Hz.
Specifications 3-3