Numerical Input Format - Racal Instruments 2251A Operator's Manual

Universal timer/counter
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Byte No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
NOTES:
1.
2.
3.
4.
5.
3-10
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Table 3.7 - Numerical Input Format
Interpretation
Sign of mantissa
Most significant digit
Least significant digit
Exponent indicator
Exponent sign/space
More significant digit
Less significant digit
Spaces, nulls or zeros occurring before byte 1 are ignored by the
counter.
Byte 1 may be omitted and a positive mantissa assumed.
Bytes 2 to 11 may have up to nine digits and a decimal point. The
decimal point is not essential. After entry of nine digits (without a
decimal point), additional digits are ignored and a programming error
is generated. Excess digits that are truncated will still increase the
power-of-ten stored. Also, if fewer than nine digits are needed,
unused bytes may be omitted.
Spaces or nulls entered between bytes 11 and 12 are ignored by the
counter.
Bytes 12 to 15 (exponent group) may be omitted. Also, byte 13 may
be omitted or transmitted as a space (a positive exponent should be
assumed in either instance).
Permitted ASCII Characters
+ or -
0 to 9 or .
E or e
+ or - or space
0 to 9
0 to 9

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