SYSTEM TECHNICAL MANUAL
HARDWARE DESCRIPTION
The power requirements for the I/O bus plugs are:
• For each peripheral plug + 5V ± 5% max. Current 0.5A
+12V ± 5% max. Current 0.1 A
or
• For all plugs (Jl, J2, J2A, J3, J4, J5, J6, J7 and J7A)
+ 5V + 5% max. 5.0A
+12V ± 5% max. 0.6A
The DC voltage levels for the I/O bus plugs are:
• Input/Output HIGH-Voltage V[j = 2.4 to 5.5 Volts
• Input/Output LOW-Voltage Vl = -0.5 to 0.8 Volts
Timing charts are provided in Figures 2.4 to 2.8.
2 5
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