CTI Products CCU Channel Control Unit User Manual
Page 9
CCU Hardware Reference
Specifications
CTI Products, Inc.
68-11843-105
3
Figure 2 shows the equivalent circuits of the CCU I/O pins. The pull-up voltage
Vp is controlled by jumper E1B, located on the rear of the module.
•
Vp = 15 Vdc with jumper E1B out (Default setting)
•
Vp = 5.0 Vdc with jumper E1B in
Figure 2 - I/O Equivalent Circuit
CA-80043-105
22K
Vp
150K
HCMOS
IC
INPUT
PROTECTION
ESD
30V
TRANSORB
22K
Vp
PROTECTION
ESD
30V
TRANSORB
180K
+5V
22K
Vp
150K
HCMOS
IC
INPUT
PROTECTION
ESD
30V
TRANSORB
+5V
+5V
INPUT/OUTPUT
OUTPUT
INPUT
0.01uF
0.01uF
0.01uF
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