8-14
Preset State and Memory Allocation
Memory Allocation
NOTE
Even though calibration data is stored in non-volatile memory, if the
associated instrument state is not saved, you will not be able to retrieve the
calibration data after a power cycle.
The fixed memory is used to store the following data (you cannot change where this data is
stored and it does not affect your memory availability for storing user-allocated data):
• HP-IB addresses
• copy configuration (printer and plotter type, port, baud rate, handshake)
• power meter type (HP 436/437/438)
• display colors
• sequence titles
• sixth sequence
• power sensor calibration factors and loss tables
• user-defined calibration kits
• system Z0
• factory preset
• HP-IB configuration
• display intensity default
The maximum number of instrument states, calibrations, and memory traces that can
reside in non-volatile memory at any one time is limited to 31 instrument states, 128
calibrations (4 per instrument state, including the present instrument state), and 64
memory traces (4 per instrument state, including the present instrument state).
In addition, the number of instrument states and associated calibrations and memory
traces are limited by the available memory. To display the amount of unused memory on
the analyzer, press
. (Be sure you have selected
as
your disk type.) In the upper right-hand portion of the display, the value displayed as
Bytes free:
is the unused non-volatile memory. When you save to the internal memory,
you will see the number of bytes free decrease. When you delete files, the number of bytes
free increases. There is a maximum of 2 MBytes available.
If you have deleted registers since the last time the instrument was preset, the bytes
available for you to use may be less than the actual "bytes free" that is displayed. Deleting
registers to increase the available memory will work in cases where the registers being
deleted and the registers needing to be added are of the same standard size (such as
instrument states not having calibrations associated with them). In certain other cases,
however, you may have to press
after deleting registers so that the "bytes free"
value equals the available memory value. During a preset, the analyzer runs a memory
packer that de-fragments the free memory into one contiguous block.
Save/Recall
INTERNAL MEMORY
Preset
Summary of Contents for 8719ES
Page 6: ...vi ...
Page 10: ...Contents x Contents ...
Page 11: ...1 1 1 HP 8719 20 22ES Specifications and Characteristics ...
Page 60: ...1 50 HP 8719 20 22ES Specifications and Characteristics Instrument Specifications ...
Page 61: ...2 1 2 HP 8719 20 22ET Specifications and Characteristics ...
Page 98: ...2 38 HP 8719 20 22ET Specifications and Characteristics Instrument Specifications ...
Page 99: ...3 1 3 Front Rear Panel ...
Page 111: ...4 1 4 Menu Maps ...
Page 113: ...4 3 Menu Maps Menu Maps Figure 4 2 Menu Map for Copy ...
Page 114: ...4 4 Menu Maps Menu Maps Figure 4 3 Menu Map for Display ...
Page 115: ...4 5 Menu Maps Menu Maps Figure 4 4 Menu Map for Format Figure 4 5 Menu Map for Local ...
Page 116: ...4 6 Menu Maps Menu Maps Figure 4 6 Menu Map for Marker Marker Fctn and Marker Search ...
Page 118: ...4 8 Menu Maps Menu Maps Figure 4 9 Menu Map for Power and Sweep Setup ET only ...
Page 119: ...4 9 Menu Maps Menu Maps Figure 4 10 Menu Map for Power and Sweep Setup ES only ...
Page 120: ...4 10 Menu Maps Menu Maps Figure 4 11 Menu Map for Preset ...
Page 121: ...4 11 Menu Maps Menu Maps Figure 4 12 Menu Map for Save Recall ...
Page 122: ...4 12 Menu Maps Menu Maps Figure 4 13 Menu Map for Scale Ref ...
Page 128: ...5 1 5 Hardkey Softkey Reference ...
Page 194: ...6 1 6 Error Messages ...
Page 222: ...7 1 7 Options and Accessories ...
Page 234: ...8 1 8 Preset State and Memory Allocation ...
Page 253: ...8 20 Preset State and Memory Allocation Memory Allocation ...
Page 254: ...9 1 9 Understanding the CITIfile Data Format ...
Page 269: ...9 16 Understanding the CITIfile Data Format Useful Calculations ...
Page 270: ...10 1 10 Determining System Measurement Uncertainties ...
Page 281: ...10 12 Determining System Measurement Uncertainties Measurement Uncertainty Equations ...