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HP 811 OA Service G
u
ide
Memory Sizes
EEPR
O
M
a
nd R
A
M
Sizes on t
h
e
P
C
B
oa
rd
s
7-3 4
Fun
ctional Desc
r
iptio
n
The HP 8110Α i s fitted w it h the
f
ollowing siz es of me mory :
Th e
f
oll owing sizes o f EEPR O M
a
n d RAM are fitted to t he
P
C
B
oards :
ι Mi crop rocessor Board: 256 Κ Byte RAM ; 768 Κ Byte Flash
EEPRO M
ι PLL B oard : 16 Κ By te EEPROM
ι P eriod B oard: 16 Κ Byte EEPR O M
ι
D
eskew Board : 4 Κ Byte EEPR OM
ι O utput Board: 16 Κ By te EEPRO M
Up to 10 di fferent in strume nt set ups can be stored in t he RAM
locat i on s .
R
esto
r
i
n
g Defa
u
lt Settings
Th ere are two way s to restore HP 8110Α defaul t settings :
ι
U
sing the HP-ΙΒ device command
ι Overwrit in g settings
Th e first m eth od can lead to acci dental erasure of w anted settings, as
all setup s are replaced .
Th e seco n d
m
ethod re pl aces settings in each l ocat ion indivi du ally, so
i t is
p
oss ible to restore defaults only where needed .
U
si
n
g t
h
e HP-113 Device Command
U
s ing t he HP- ΙΒ d evice command:
:SYSTem :SECurity[ :STATe]
ON
all RAM stored infor mation can be erased, and replaced by the
HP 8110Α default settings .
D
o not s wi tch s y stem sec urity ON unl ess
y
o u are willing to erase all
RAM stored inform at i on.
RAM is erased when :
ι :SYS T :S EC[ :S TAT] OFF is
p
rogrammed
ι Th e in str um e nt i s s witc hed O FF an d then s witch ed ON
immedi ately
a
fter .
Overw
r
iti
n
g Settings
R
ecalling Sta n dard Setting
f
rom memory location 0, and storing it in
locat i o n s 1 to 9, as requi red, over w rites eac h sett ing in t urn .
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