
11-18
ET User’s Guide
Factory Preset State and Memory Allocation
Save/Recall Memory Allocation
Memory traces are saved with the instrument state for each active
channel whose display is set to Memory, Data/Mem, or Data and Memory
in the
menu.
Following are some examples:
•
state, saving instrument state only:
Size = 0 + 140 + 9580 = 9720
• Using 201 points, with Data/Mem on channel 1, channel 2 off:
Size = 0 + 140 + 9580 + (8
×
201) = 11,328
• Using 201 points, with Data/Mem on channel 1, channel 2 off, and
saving both the instrument state and data:
Size = 0 + 140 + 9580 + (8
×
201) + 178 + (8
×
201) = 13,114
• Same as above, but after performing a transmission calibration and
saving the calibration:
Size = 0 + 140 + 9580 + (8
×
201) + 178 + (8
×
201) + 246 + (4
×
8
×
201) = 19,792
NOTE
Most disks use a sector size of 256 or 512 bytes, so there will usually be a
small amount of wasted space on the disk.
Memory Usage Notes
In general, memory usage increases with number of points and
complexity of information saved.
One-port reflection calibrations use more memory than transmission
calibrations because they use more error arrays.
When multiple types of information are saved together, the total can be
less than indicated above because redundant internal information is
eliminated.
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Summary of Contents for HP 8712ET
Page 8: ...viii ET User s Guide ...
Page 17: ...ET User s Guide 1 1 1 Installing the Analyzer ...
Page 34: ...1 18 ET User s Guide Installing the Analyzer Preventive Maintenance ...
Page 35: ...ET User s Guide 2 1 2 Getting Started ...
Page 52: ...2 18 ET User s Guide Getting Started Performing the Operator s Check ...
Page 53: ...ET User s Guide 3 1 3 Making Measurements ...
Page 118: ...3 66 ET User s Guide Making Measurements Measuring Impedance Magnitude ...
Page 119: ...ET User s Guide 4 1 4 Using Instrument Functions ...
Page 143: ...ET User s Guide 4 25 Using Instrument Functions Using Markers Figure 4 15 Delta Marker Mode ...
Page 149: ...ET User s Guide 4 31 Using Instrument Functions Using Limit Testing Figure 4 16 Limit Lines ...
Page 207: ...ET User s Guide 5 1 5 Optimizing Measurements ...
Page 226: ...5 20 ET User s Guide Optimizing Measurements Measuring Devices with Long Electrical Delay ...
Page 227: ...ET User s Guide 6 1 6 Calibrating for Increased Measurement Accuracy ...
Page 266: ...6 40 ET User s Guide Calibrating for Increased Measurement Accuracy Checking the Calibration ...
Page 267: ...ET User s Guide 7 1 7 Front Rear Panel ...
Page 292: ...7 26 ET User s Guide Front Rear Panel Line Module ...
Page 293: ...ET User s Guide 8 1 8 Hardkey Softkey Reference ...
Page 395: ...ET User s Guide 9 1 9 Specifications ...
Page 397: ...ET User s Guide 9 3 Specifications System Performance ...
Page 443: ...ET User s Guide 10 1 10 Safety and Regulatory Information ...
Page 449: ...ET User s Guide 10 7 Safety and Regulatory Information Regulatory Information ...
Page 450: ...10 8 ET User s Guide Safety and Regulatory Information Regulatory Information ...
Page 451: ...ET User s Guide 11 1 11 Factory Preset State and Memory Allocation ...