Setting Measurement Accuracy, Stability, And Time; Setting Measurement Bandwidth; Averaging Between Sweeps (Sweep-To-Sweep Averaging) - Agilent Technologies 4294A Operating Manual

Setting Measurement Conditions

Setting Measurement Accuracy, Stability, and Time

Setting Measurement Accuracy, Stability, and Time

Setting measurement bandwidth

Step 1. Press the
Step 2. Press the
Step 3. Select the measurement bandwidth.
Measurement bandwidth
1 (measurement speed maximized)
2
3
4
5 (measurement accuracy maximized)
Step 4. Press the
the measurement bandwidth currently selected is displayed in the key label
BANDWIDTH [ ]
Softkey label
BANDWIDTH [1]
BANDWIDTH [2]
BANDWIDTH [3]
BANDWIDTH [4]
BANDWIDTH [5]
NOTE Setting a greater measurement bandwidth will improve measurement accuracy, but keep in
mind that this requires a longer measurement time.

Averaging between sweeps (sweep-to-sweep averaging)

Sweep-to-sweep averaging computes each data point (vector value) based on an
exponential average of consecutive sweeps weighted by a user-specified averaging factor.
The sweep-to-sweep uses the algorithm shown in Equation 5-1.
Equation 5-1 Sweep-To-Sweep Averaging Algorithm
where:
126
key to display the measurement bandwidth/averaging menu.
[Bw/Avg]
key to display the measurement bandwidth setting menu.
BANDWIDTH [ ]
key to return to the measurement bandwidth/averaging menu. Note that
return
key.
Key stroke
1 FAST
2
3
4
5 PRECISE
Selected measurement bandwidth
1 (measurement speed maximized)
2
3
4
5 (measurement accuracy maximized)
S
1
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A = + 1 –
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Chapter 5