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AM700 Audio Measurement Set Service Manual
1–21
Table 1–7: Nonvolatile memory
Capabilities Description
Battery-backed SRAM
Storage Capacity 1 Mbyte
Retention Time (The length of time that stored
waveforms and setups are retained without power to the
instrument)
Internal batteries, installed at the time of manufacture, have a life of greater
than 10 years when operated and stored at an ambient temperature from
0_
C to 50_ C. Retention time of the nonvolatile memories is equal to the
remaining life of the batteries.
Battery life can be reduced when stored for extended time above 50_C.
Retained data may be lost when stored for extended time below 0_ C.
Backup Battery Lithium inorganic
Rated Voltage 3.0 V
Flash EPROM
Storage Capacity 8 Mbyte
Retention Time (The length of time that data stored in
flash memory will remain useable)
10 years (minimum)
Maximum Rewrites 100,000
Table 1–8: Software update procedure
Capabilities Description
Update Procedure AM700 firmware may be updated from a 1.44 Mbyte diskette.
Table 1–9: Floppy disk drive
Capabilities Description
Mechanical
Size of Floppy Disk 3.5 inches, 1.44 Mbytes, DSHD
Mounting Location and Orientation of Disk Drive Left side of CRT, vertically oriented
Disk drive must not be operated when it is upside down (with the left side
of the AM700 down).
Ejection Tab Orientation Toward the bottom of the cabinet
Logical
User File Format MS-DOS