5-10
5
5.8
SANITIZING PROCEDURE
The 8099 the following memory elements:
RAM, 1 M x 16-bit memory
Flash, 2 M x 8-bit memory
Processor memory
The RAM and processor memory contents are lost when power is turned off.
The Flash memory contains one sector that contains user saved variables. The
other sectors are used for the unit's firmware or are spare sectors for future
program use. A typical user does not have access to the program or to the
spare sectors.
The Flash memory variable sector can be restored to factory settings by per-
forming the following steps:
1.
Follow the steps in paragraph 5.6.1 to restore the network settings
2.
Use ICS's VXI11_kybd utility to link to the board. (See para 3.9)
3.
Send the board the following commands with all capital letters:
CAL:DATE UNCAL
CAL:DEFAULT
CAL:DATE mm-dd-yy
'use today's date
The RAM memory contents should be lost when power is turned off. To be
sure all data and code remnants are fully removed from the RAM, perform the
following steps:
1.
Turn the unit off and disconnect all cables.
2.
Touch your hands to the shiny metal part of the computer or to some other
instrument that is grounded to the AC power lines and to earth.
3.
Remove the PC assembly from its case by undoing the two rear panel
screws and the two screws on the bottom of the case. Press the Power
Switch to slide the PC assembly out of the case.
4.
Locate the 3.3 V testpoint (TP1) and use a jumper to connect it to the
GND testpoint (TP2). Leave the test points connected for 1 hour or
longer to drain any residual charge out of the CMOS RAM chip.