4 Configure the display.
Activate all the traces you will use to display measurement results.
Press [
Scale
], then press [
AUTOSCALE ON OFF
] to highlight ON.
Activate a single trace, then press [
Meas Data
] followed by the softkey corresponding
to the measurement results you want to display in that trace.
If you want to watch the measurement progress through the data in the time-capture
buffer, activate a single trace, then press [
Meas Data
][
CAPTURE CHANNEL x
](or
[
Meas Data
][
MORE CHOICES
][
CAPTURE CHANNEL x
]).
In most cases, the Agilent 35670A allows you to measure from the time-capture buffer
using any instrument mode—regardless of the mode you used to fill it. There are three
exceptions:
• You can neither fill nor measure from the buffer using the swept sine mode.
• If you filled the buffer using FFT mode and a start frequency greater than 0 Hz
(which provides “zoomed” data), you can measure from the buffer only if the FFT
mode is selected.
• If you filled the buffer without including tachometer data, you cannot measure from
the buffer using order mode.
Although these are the only cases where it is not possible to change instrument modes
when you measure from the buffer, it is generally better to fill and measure from the
buffer using the same mode.
The analyzer also allows you to measure from the time-capture buffer using a
narrower frequency span or longer time record than was used to fill the buffer. The
only exception is if you filled the buffer with zoomed data (as described above). The
analyzer never allows you to measure from the buffer using a wider span or shorter
time record than was used to fill the buffer. This restriction is enforced when you
press [
Start
] to begin measuring from the buffer.
Agilent 35670A
Operator's Guide Using Time Capture
7-11
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