HP -18C Owner's Manual page 200

INTEREST
<=
-100%
One of the following values is less than or equal to -100:
• TVM menu: 1% YR -:-- #P
jY.
• EFFCT menu: EFF% -:-- P (calculating NOM%); EFF% (calculating
NOM%).
• CONT menu: EFF% (calculating NPY, NUS, or NFV).
• CFLO menu: 1% or estimate of IRR% .
I ~nEF~RUPTED
Calculation of 1% YR, IRR%, or a user-variable (in
SOLVE)
was
interrupted.
I tWAL I D DATE
The number entered cannot be interpreted as a proper date.
I t· 1 VAL I D FORMULA
The solver cannot interpret the formula.
It~\.JALI D INPUT
• Attempt to store into a built-in variable a number that is outside
the range of values permitted for that variable.
• The number entered cannot be interpreted as a proper time.
• The alarm repeat interval is out of range.
• Attempt to enter a non-integer, negative number, or alphabetic
characters when specifying the number of displayed decimal places
(after pressing I11III ).
H1VAL I D
t~
Attempt to calculate I%YR with
N~0.99999
or
N~1010.
198 D: Error Messages