Math Function (R-X) Y/Z - Racal Instruments 1994 Service Manual

3.
4.5.3
Stop
Arm
Delay Storage
3. 4.5.3.
1
A
stop
arm
delay
is
stored
using
key
sequence
<value>
SHIFT
STORE DELAY,
where
<value>
is
in
decimal
or exponential form.
3.4.5.
3.
2
The
value of
the displayed delay entered
is
rounded
to
the nearest 25.6
jus
before
it is
stored.
Attempted
entry of an out-of-range value
will result
in
an
"Op
Er"
being
displayed.
The
stored delay
is
retained
when
the
counter
is
placed
in
the Standby
mode. The
counter
returns
to
the
measurement mode
automatically once the delay value
is
entered.
3.
4.5.4
Stop
Arm
Delay Recall
3. 4. 5. 4.1
Recall stored delay values
to
the display using key
sequence
SHIFT
RECALL
DELAY.
3. 4. 5.
5 Stop
Arm
Delay
Enabling/Disabling
3.4. 5. 5.1
Enable and
disable the stop
arm
delay by successively
using
key sequence
SHIFT
DELAY.
The
LED
lights
when
the delay function
is
enabled.
3.4.6
Math
Function (R-X)
Y/Z
3.
4.6.1
The
math
function applies
to all
counting and timing
functions of the
1994
except phase measurement
and
check.
This
function permits measurement
value
R
to
be
offset, normalized,
or scaled before
display,
using stored constants X, Y, and/or
Z,
respectively.
The
display indicates (R-X)
Y/Z
after enabling the math
function.
Home
state values for X, Y,
and Z
are
0, 1,
and
1,
respectively {Zf
0 at
any
time).
NOTE:
It is
possible to store
a
0 for
constant
Z.
However,
Error 20
will result
if
the
math
func-
tion
is
enabled with
this
value
set.
3.
4.6.2
Because
the
1994 attempts
to
retain engineering
format
in
its
display,
one
or
two
small place-holding zeros
will
be
shown when
a computation
causes the display to
exceed
counter
resolution.
3.4. 6.3
Math
Constant Storage/Recall
3. 4. 6. 3.1
Constants X,
Y,
and/or
Z must
be stored before
enabling the
math
func-
tion.
Use key sequence
<
value)
SHIFT
STORE
X/Y/Z, where
<
value)
is
in
decimal
or
exponential form,
to
enter any of
the constants.
The
permissible range of values
for
the
math
constants
is
±0.000000001 E-9
to
±10000000000 E9
to
nine
significant
digits.
Any
number
exceeding
this
range
will result
in
an
"Op
Er" being
displayed.
The
actual display
range
for
the
1994
is
±999.999999
E+9.
Use key sequence SHIFT
RECALL
X/Y/Z
to
recall
math
constants.
3.4.6.3.2
The
counter
returns
to the
measurement mode
automatically once the value
for the constant
is
entered.
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