TM 1–1520–238–T–3
1–5
1. Octal conversion is the transformation of direct octal read digits and examination of selected bit(s)
CONDITION(s). Octal conversion is used when (OCTAL) appears after MEMORY DATA BIT(S) in the respective
paragraph. Octal conversion is not required in this manual. Conversions are referenced under CONDITION.
EXAMPLE:
16–28
CONDITION: 0=H
1=G
2=F
3=E
4=D
5=C
6=B
7=A
2. Bit conversion is the transformation of the octal number and examination of bit(s) CONDITION(s). Bit
conversion is used when (BINARY) appears after MEMORY DATA BIT(S) in the respective paragraph.
EXAMPLE:
3–63 SIGNAL NAME:
HARS INPUT NOT CHANGING
MEMORY LOCATION: 002103
MEMORY DATA BIT(S):
17
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates HARS data is valid.
REMARKS: From DASEC to FCC.
PASS:
If first digit displayed on HOD is 0, 1, 2, or 3, go to paragraph 3–64.
FAIL: Location of fault: refer to Chapter 6, paragraph 6–14.
3. To convert from octal, first transform the octal numbers into binary numbers and then note the CONDITION
of the bit(s) specified.
Assume 062475 is displayed on HOD.
EXAMPLE:
0
6th digit
6
5th digit
2
4th digit
4
3rd digit
7
2nd digit
5
1st digit
bit
X
X
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
status
0
1
1
0
0
1
0
1
0
0
1
1
1
1
0
1
Bit 17 CONDITION is a one; therefore a HARS NO GO exists.
4. Hexadecimal conversion is the interpretation of four bits of binary data. Hexadecimal conversion is used
when (HEX) appears after MEMORY DATA BIT(S) in the respective paragraph. Hexadecimal conversion is used for
ASCII code conversions.
Assume 062465 is displayed on HOD.
0
6
2
4
6
5
BITS
X
X
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
STATUS
0
0
0
1
1
0
0
1
0
1
0
0
1
1
0
1
0
1
ASCII
3
5
HEXADECIMAL
