Hardware Preparation
2-7
2
!
Caution
Removing all jumpers may temporarily disable the
SRAM. Do not remove all jumpers from J14, except for
storage.
Flash Write Protect Header (J16)
The firmware resident in Flash memory is originally loaded at the
factory, but the Flash contents can be reprogrammed if necessary.
To prevent inadvertent overwriting of the Flash memory, header
J16 provides write protection. With a jumper installed on J16, the
Flash memory can be written to via normal software routines.
When the jumper is removed (the factory configuration), Flash
memory cannot be written to.
J14
(Factory configuration)
5
6
J14
Backup Power Disabled
Primary Source Onboard Battery
1
2
5
6
1
2
J14
5
6
1
2
J14
5
6
1
2
J14
5
6
1
2
Secondary Source Onboard Battery
Primary Source VMEbus +5V STBY
Secondary Source VMEbus +5V STBY
Primary Source VMEbus +5V STBY
Secondary Source Onboard Battery
Primary Source Onboard Battery
Secondary Source VMEbus +5V STBY
(For storage only)
12
(Factory configuration)
J16
Flash write-protected
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