>@9
Multitone Audio Test System
User Manual
V 3.32
23 / 71
same blocklength as of the generated signal is performed. Further analysis of the acquired
result may be done through individual programming.
Additionally, the analyzer also provides facilities to weight an input result with different
weighting curves.
Block Diagram
LED INDICATORS
CLOCK
SYNC
IEEE-488
INTERFACE
A/D CONVERTER
A/D CONVERTER
AMP
AMP
DSP MEMORY
DSP
CPU
Fig. 17 Block Diagram Analyzer
Analog Section
>@9
features two independent analog input stages with completely independent ranging
facilities. The inputs are balanced with BNC and 4mm banana connectors at the front and
rear panel. Input impedance is 100k
Ω
at all inputs. Levels can be handled from 60dBVp to
+20dBVp with full dynamic range.
Filtering
>@9
provides a set of software weighting and Emphasis filters. The filters have a gain of 1
and can be disabled or enabled. Only one weighting filter and the Emphasis filter may be
engaged at a time. The current filters implemented are listed on the next page.
