
ES User’s Guide
5-5
Optimizing Measurements
Increasing Sweep Speed
To Reduce the Amount of Averaging
If averaging has been turned on (it is off in the factory preset condition),
reducing the averaging factor (or turning it off altogether) will increase
the analyzer's measurement speed. Averaging requires multiple sweeps
which increases measurement time. Turning off averaging and using a
narrower system bandwidth may produce faster results.
1. Press
and enter an averaging factor that is
less than the value displayed on the analyzer screen and press
.
2. If you want to turn the averaging off, press
.
To Reduce the Number of Measurement Points
To reduce the number of measurement points, press
and use the front panel knob, the
keys, or the numeric keypad to enter the reduced number.
Generally, as the number of points is decreased, so is the sweep time.
However, other factors will affect the sweep time such as:
• using frequency bands that contain very low frequencies (below
approximately 20 MHz)
• the number of band crossing points encountered in a sweep (at
approximately 1900 MHz, 2310 MHz, and 2620 MHz) (HP 8714ES
only)
• if the MHz/msec rate is above the maximum rate at which the source
can be swept
The following graph shows an example of the relationship between the
number of points, frequency span, and total cycle time. Total cycle time is
defined as the time from the start of the sweep to the start of the next
sweep. This graph was created with data from a setup on an HP 8714ES
using
conditions, except for number of
points and sweep frequencies, as noted on the graph.
AVG
Average Factor
ENTER
AVG
Average on OFF
MENU
Number of Points
PRESET
Factory Preset
Summary of Contents for HP 8712ES
Page 8: ...viii ES User s Guide ...
Page 17: ...ES User s Guide 1 1 1 Installing the Analyzer ...
Page 34: ...1 18 ES User s Guide Installing the Analyzer Preventive Maintenance ...
Page 35: ...ES User s Guide 2 1 2 Getting Started ...
Page 52: ...2 18 ES User s Guide Getting Started Performing the Operator s Check ...
Page 53: ...ES User s Guide 3 1 3 Making Measurements ...
Page 135: ...ES User s Guide 4 1 4 Using Instrument Functions ...
Page 159: ...ES User s Guide 4 25 Using Instrument Functions Using Markers Figure 4 15 Delta Marker Mode ...
Page 165: ...ES User s Guide 4 31 Using Instrument Functions Using Limit Testing Figure 4 16 Limit Lines ...
Page 224: ...4 90 ES User s Guide Using Instrument Functions Using an External VGA Monitor ...
Page 225: ...ES User s Guide 5 1 5 Optimizing Measurements ...
Page 246: ...5 22 ES User s Guide Optimizing Measurements Measuring Devices with Long Electrical Delay ...
Page 247: ...ES User s Guide 6 1 6 Calibrating for Increased Measurement Accuracy ...
Page 281: ...ES User s Guide 7 1 7 Front Rear Panel ...
Page 306: ...7 26 ES User s Guide Front Rear Panel Line Module ...
Page 307: ...ES User s Guide 8 1 8 Hardkey Softkey Reference ...
Page 410: ...8 104 ES User s Guide Hardkey Softkey Reference Z ...
Page 411: ...ES User s Guide 9 1 9 Specifications ...
Page 469: ...ES User s Guide 10 1 10 Safety and Regulatory Information ...
Page 475: ...ES User s Guide 10 7 Safety and Regulatory Information Regulatory Information ...
Page 476: ...10 8 ES User s Guide Safety and Regulatory Information Regulatory Information ...
Page 477: ...ES User s Guide 11 1 11 Factory Preset State and Memory Allocation ...