Marker Measurement - ADInstruments DSA2016 User Manual

3.3 Marker Measurement

Marker
Marker is a diamond-shaped marker (As shown below), to mark the point in trace. Through the
marker, you can read amplitude, frequency or the time point of scan on each point.
Keypoints:
• It can show four pairs of marker on time at the most, but there is only one pair or one single
marker which is in activated status each time.
• You can use numeric keys, knobs or direction keys to modify this parameter. The detail
method refers to the specification in "Parameter Setting".
1. Marker
Choose one of four markers, the default one is the first. After choosen, you can set the mode of
marker, trace that is marked, reading method and other parameters. The marker which is opened
currently should be marked on the trace chosen by marker trace. The reading on the marker from
which is in activated status currently is shown on the right corner of the screen in active function
area.
Marker Paremeter
Parameter Instruction
Default Center Frequency
Range 0 ~ 1.6GHz (1.6GHz)
Reading = Frequency (or period), unit is GHz, MHz, kHz, Hz (or ks, s, ms, us,
ns, ps)
Unit
Reading = Time (or reciprocal of time), unit is ks, s, ms, us, ns, ps (or GHz,
MHz, kHz, Hz)
Reading = Frequency (or period), Step = Sweeping width/(sweep point - 1),
Knob Step Reading = Time (or reciprocal of time), Step = Sweeping time/(sweep point –
Direction Key Reading = Frequency (or period), Sweeping width/10
Step Reading = Time (or reciprocal of time), Step = Sweeping time/10
2. Normal
One type of marker, used for measuring X value (frequency and time) and Y value (amplitude) of
one point on the trace. When choose "Normal", there will be a marker marked by the current marker
on the trace, like "1".
Keypoints:
• If there is no active marker, then you need to activate a marker in center frequency of current
trace.
• Move the marker through inputing value by numberic keys, knobs or direction keys. The
reading of current marker is shown on the right corner of screen.
• The resolution of reading on X-axis (frequency or time) is related with sweep width. Reduce
the sweep width can get higher resolution.
3. Off
Close the marker chosen currently, and the marder information and relative function shown in the
screen will be closed too.
4. Marking trace
1)