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3.4
BCD Printer Output
A parallel BCD output taken from the 1, 2,4 & 8 lines within the Totalizer unit is provided. Four lines for each
decade are connected to the external connector J101A located on the rear panel.
Schematic #0104-5033-99, located in Section 4.4, shows the 1, 2, 4 & 8 outputs as they are connected to the
Totalizer unit.
"0" state +0.4 VDC maximum, 6 MA maximum sink current.
"1" state +4.7 VDC nominal unloaded with source resistance of 1.8K.
The following chart shows the output connections as contained in the rear panel connector J101.
J101A Terminal Connections
Decade
1
2
3
4
5
6
BCD
1
1
3
5
7
9
11
2
2
4
6
8
10
12
4
26
28
30
32
34
36
8
27
29
31
33
35
37
COMMON - 50, 14, 38, 39
**INHIBIT INPUT- 45
*PRINT COMMAND - 21, 48
OVERFLOW (O/F) Bit - 13
*This signal is a "1" until the GATE opens and then goes to Logic "0". It returns to Logic "1" at the end of the
GATE time.
**When this input is a "0", it inhibits the Display Time cycle from occurring.
3-14
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