
ET User’s Guide
11-13
Factory Preset State and Memory Allocation
Save/Recall Memory Allocation
Save/Recall Memory Allocation
Before reading this section, please refer to
in
for an overview of the Save/Recall functions.
This section provides details on the size of Save/Recall instrument state
files. Since disks have limited storage capacities, it is often important to
know how many instrument state files will fit on a disk, and how to
reduce the size of each file in order to maximize storage.
Types of Storage Disks
The analyzer is capable of saving complete instrument states for later
retrieval. It can store these instrument states to any one of the following:
Table 11-1
Disk Capacities
The non-volatile RAM disk is powered by a battery, to provide short term
storage of data when the analyzer is not connected to ac power. With this
battery protection, data can typically be retained in memory for
approximately 250 days at 70
°
C and for more than 5 years at 25
°
C.
The number of files that can be saved to disk is limited by the space
available on the disk.
The number of bytes available for storage are displayed in the upper
right-hand portion of the disk catalog window, after the words "Bytes
Free."
In addition, each directory can only hold a limited number of files or
directories. The following table shows these limits:
Disk
Capacity
Internal non-volatile RAM disk
Internal volatile RAM disk
Internal 3.5” floppy disk
over 1.5 MB
over 5 MB to 23 MB
1.44 MB
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 ...