Stanford Research Systems SR785, Руководство по эксплуатации и программированию

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Input Configuration Menu 4-91
SR785 Dynamic Signal Anaylzer
For time domain measurements involving square waves or impulses, removing the filter
can remove ringing and improve the accuracy of the time record.
The specifications apply only if the filter is On.
Command: I1AF (?) {i}
Command: I2AF (?) {i}
A-Wt Filter
Select the A-Weighting Filter for the selected input [Off, On]. The AWt indicator at the
top of the screen shows ‘AWt” in bright whenever the A-Weighting filter is On.
The A-Weighting filter simulates the hearing response of the human ear and is often used
with Octave Analysis measurements. The input A-Weighting filter conforms to ANSI
standard S1.4-1983.
A-, B- and C- Weighting functions are also available as operators in User Math
functions.
Command: I1AW (?) {i}
Command: I2AW (?) {i}
Autoranging
Select the AutoRange Mode for the selected input [Up Only, Tracking]. This mode only
applies when Ch1 Auto Range is On.
In Up Only, only overload causes the Input Range to change. The Input Range only
moves up.
In Tracking Mode, the Input Range moves up for overloads and down when the signal
falls below half scale. Some signals, such as low frequency noise, can cause the Input
Range to oscillate. Do not use Tracking Mode in these cases.
Auto Range responds to all frequencies present at the input (except those attenuated by
AC coupling or the anti-aliasing filter), not just those within the measurement span.
Command: I1AR (?) {i}
Command: I2AR (?) {i}