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27Chapter 4 Making a Measurement
Measurement Uncertainty
The uncertainty of any measurement includes several factors
related to the probe and meter.
•
Frequency response or frequency sensitivity is typically
±1 dB to ±2 dB (from about ±25% to about ±55%).
The correct use of correction factors can greatly reduce
the amount of uncertainty associated with frequency
response.
Checking or Changing the Probe Model
To check the probe model that the meter is currently set to...
1. Press F3 (MENU). The First Menu Screen will appear.
2. Press 7 (PROBE). A Screen will appear that shows the
model number and basic characteristics of the probe.
The probe serial number is shown for probes selected
from memory.
3. Press F1 (OK) key to return to the First Menu Screen.
4. Press Esc to return to the Measurement Display Screen.
To change to another probe without turning the meter off...
1. Press F3 (MENU). The First Menu Screen will appear.
2. Press 7 (PROBE). A screen will appear that shows the
model number and basic characteristics of the probe.
3. Press F4 (RESTART) to return to the Opening Menu
Screen. Press F1 (MEASURE) and begin the probe
selection process.
8712D SN 12345
300MHz z50GH E
_
FLD
20 Wmcm/
2
FLAT
OK RESTART
F1 F2 F3 F4
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