LeCroy 9450 - Page 31

8=offset range:
The
calibration
found
may
go
out of DAC
range
for
certain
offset
values
chosen
(this
problem
should
never
occur
at 5/10
mV)
Examples
:
Code
303: Gain
range
and
gain
conv.
problem
at
1 MS,
BWL
ON
and
OFF
Code
4c6d:
Offset
conv.
problem
on
all
4
coupling
conditions
Offset
range
problem
at 1 MS
BWL
ON
and
OFF
Gain
range
problem
at 50
S BWL
ON
Gain
conv.
problem
at 1
MS BWL
ON
TMS
status:
Status must
be
'working'.
'No
memory'
is
indicated
if
the
ADC
board
is
not
present.
Other
fatal
messages
may
come
up,
like
'TMS
Broken'.
The
following
tests
report
problems
for
each
of
the
4
possible
sampling
rates:
psec/div
Int.
osc. MHz
Number
of
ADC
used
200
100
20
50
100
200
When
sampling
with
one
ADC,
the
reference
ADC
(No.
3 by
soft.
Wave
\
numbered
0, 1, 2,
3
for
software,
1,
2,
3,
4 for
hardware)
is
used.
RIS
mode runs
always
at 100
Ms/sec
with
1 ADC.
Trigger
Calibration:
1=BWL
ON
2=BWL
OFF
Example:
Code
3311:
Problem
at
BWL
ON
for
all
4 sampling
rates.
Problem
BWL
OFF
at
400
and
200
Ms.
6