SYSTEM TECHNICAL MANUAL
HARDWARE DESCRIPTION
Technical details of the keyboard are provided in Figures
2.26 to 2.28.
Width
429 mm (16.9 in.)
Height
38 mm ( 1.5 in.)
Depth 216 mm ( 8.5 in.)
Weight 2 kg ( 4.4 lb.)
Figure 2.26 Keyboard dimensions and weight
Supply voltage
+5 Vdc
Current 100 mA (max.)
Logic level '1'
2.4 to 5.3 Vdc at max. 3m A
Logic level '0 '
0 to 0.5 Vdc at max. 30m A
Figure 2.27 Keyboard voltage requirements
J 1 0 9
Pin
F u n ctio n C o lo r
K eyb o ard
PC B (T B 1 )
1
Logic Gnd black 4
2 Frame Gnd
shield 5
3 +5V
white
2
4 SD PO LL/ poll/data line
yellow
3
5
Reserved
red 1
Figure 2.28 Keyboard cable pin assignments
The joy stick is an option for program games. Functionally,
the joy stick is connected parallel to the cursor keys, with a
relationship between the arrows on the keyboard and the direction
in which the joy stick is moved. The pin assignments for the joy
stick connector are shown in Figure 2.29.
Pin
Assignment
1
Col 10
2
Col 9
3 Col 11
4
Col 12
5 Log. Gnd
6 Col 4
7
+5V
8
Row 4
9 Reserved
Figure 2.29 Joy stick pin assignments
2-37
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