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Section II. MULTIPLEX READ CODE INTERPRETATIONS | Up
TM-1-1520-238-T-3 Army Model AH-64 Helicopter (NSN
1520-01-106-9519) (EIC: RHA) Multiplex Read Codes Manual | Next
Figure 1–1.1. Control Display Unit (CDU) (ADD) |
TM 1–1520–238–T–3
1–4
Change 5
M53–002A
062475
R002100
MEMORY DATA
MEMORY
LOCATION
HOD
FLTR SEL SWITCH FOR
OPTICALLY IMPROVED TADS
Figure 1–1.
TADS Optical Relay Tube (ORT) (ADC)
b.
Memory data octal representations are the binary, octal, hexadecimal and ASCII conversions to octal. These
conversions allow direct multiplex read codes to be displayed on the HOD (fig. 1–1) (ADC) or CDU (fig. 1–1.1)
(ADD). The sixth digit (sign digit) indicates the polarity. A 1 displayed indicates a negative number or indication; a 0
indicates a positive number or indication (see example).
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
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