Filter
Top Products
AGILENT 35670A
Supplemental Operator’s Guide
20
Section 9 : Measuring Dual Channel Time Waveforms
This section contains procedures for setting up and measuring a single channel time
waveform using an AGILENT 35670A Dynamic Signal Analyzer. Included are
steps to select single channel operation, set up the trace time length, and set up
triggering to capture a transient event. Instructions will also be presented to scale the
time trace.
Selecting Dual Channel Operation
To measure a single-channel spectrum, turn on the AGILENT 35670A. The default
instrument mode is dual-channel operation.
Note: if the AGILENT 35670A was already turned on and in an unknown
state, then preset the analyzer by doing the following:
• Press the green [Preset] hardkey.
• Press [DO PRESET] softkey (F1).
This always returns the analyzer to dual-channel operation.
Selecting Time Record Length
Time record length can be entered directly or indirectly. It is entered directly under
the [Freq] hardkey as follows (this example sets up a 0.25 second time record):
• Press the [Freq] hardkey
• Press the [RECORD LENGTH] softkey (F8)
• Enter 0.25 and then press the [S] softkey (F1)
Time record length can also be specified indirectly by entering frequency and
resolution in lines. The relationship between time record length (T), lines of
resolution (N), and frequency (F) is:
()
T
N
F
=
1024.
For 400 lines of resolution (default) and 1600 Hz span, the time record length should
be 400/(1.024*1600) ≈ 0.25 seconds. The table showing the relationship between
lines, span, and time record length can be found in the section on Single Channel
Time Waveforms.
Displaying Dual Time Waveforms
Dual time waveforms can be shown in the UPPER/LOWER display format, with
AUTO SCALE turned ON, as follows:
• Press the [Disp Format] hardkey.
• Press the [UPPER/LOWER] softkey (F3).
• Press the [Active Trace] hardkey.
• Press the [A] softkey (F1)
• Press the [Meas Data] hardkey.