Racal Instruments 1994 Service Manual page 67

Table
3.1
- Front
Panel
Controls, Indicators, and Connectors
(Cont'd)
Reference
Item
Function/Description
1
Unshifted
Key
Functions:
9
jjggj
Numeric Keys
(0-9) Entry
of
numbers
and
constants
for
math,
special functions, time-interval
stop
delays, trigger
levels, and gate
times. Also, used
to recall
machine
setups.
When
a
numeric key
is
pressed,
the
measurement
in
progress
is
aborted
and
the display
shows
the entered
num-
ber
(l5E)
Decimal
Point
(.)
Key
Inserts
decimal
point during
numeric
entry
Positive/Negative
(+/-)
Sign
Key
Toggles
sign of entered number
(mantissa
and/or exponent) between
positive (no
sign displayed) and
negative
(sign dis-
played)
EXP
Key
Changes
the data entry
mode
so that
the
next
number
entered
is
the exponent
CE
Key
Clears current display and
starts
a
new
reading
H9H99I
Shifted
Key
Functions:
SHIFT Key/LED*
Enables any
shifted key
function. After
pressing a shifted key function (except
for
STORE, RECALL,
and
MEMORY),
counter immediately
returns to
its
unshifted state with the
SHIFT LED
turning
off.
Does
not clear the
display
SF Key/LED*
Enables
all
selected
special functions
(SHIFT
SF).
Also
stores
(<NN>
SHIFT
STORE
SF) and
recalls
(SHIFT
RECALL
SF) special functions. See
Subsection
3.4.10 for details
(M)
DELAY
Key/LED*
Enables a time-interval stop delay
(SHIFT
DELAY)
in
TI
A~*B
and
Totalize. Also,
store
(<
value)
SHIFT
STORE DELAY)
and
recalls
(SHIFT
RECALL DELAY)
a time-interval stop
delay. Enabling a delay
in
a non-TI
function
produces
an
error
message.
Selecting a non-TI
function
when
in
delay
disables
DELAY
and
turns off the
LED