Figure 4-1. Er-8/16 Block Diagram - National Instruments ER-8 User Manual

Theory of Operation
FUSE (F2)
Port A
Port B
Port C
Port D
Port A
Port B
Port C
+5 V
Port C
Port D
Port A
Port B
ER-8/16 User Manual
  
EXT
+5 V
INT
Switch
+5 V
Port A
8 Lines
Relay
Digital Input
Driver
Included on the ER-16
Port B
8 Lines
Relay
Digital Input
Driver

Figure 4-1. ER-8/16 Block Diagram

4-2
CH1 RELAY
CH2 RELAY
CH3 RELAY
CH4 RELAY
24 Power
CH5 RELAY Lines
CH6 RELAY
CH7 RELAY
CH8 RELAY
CH9 RELAY
CH10 RELAY
CH11 RELAY
CH12 RELAY
24 Power
CH13 RELAY
Lines
CH14 RELAY
CH15 RELAY
CH16 RELAY
© National Instruments Corporation
Chapter 4
NO 1
CH1 COM 1
NC 1
NO 2
CH2 COM 2
NC 2
NO 3
CH3 COM 3
NC 3
NO 4
CH4 COM 4
NC 4
NO 5
CH5 COM 5
NC 5
NO 6
CH6 COM 6
NC 6
NO 7
CH7 COM 7
NC 7
NO 8
CH8 COM 8
NC 8
Terminal Block
NO 9
CH9 COM 9
NC 9
NO 10
CH10 COM 10
NC 10
NO 11
CH11 COM 11
NC 11
NO 12
CH12 COM 12
NC 12
NO 13
CH13 COM 13
NC 13
NO 14
CH14 COM 14
NC 14
NO 15
CH15 COM 15
NC 15
NO 16
CH16 COM 16
NC 16
Terminal Block