Page 4.3
RF SWITCHING MODULE 40-710
pickering
SECTION 4 - PROGRAMMING GUIDE
MODULE ARCHITECTURE 40-710
One sub-unit is used to control all the module’s relays as shown below. Enabling a particular bit closes the C to A
signal path.-
Sub-Unit
Bit
40-710 Signal Path
(with relay energised)
1
1
Com1 to NO1
2
Com2 to NO2
3
Com3 to NO3
4
Com4 to NO4
The 40-710 utilises 4 SPDT relays. In the default state all relays are open circuit. Energising a particular relay
creates a signal path between the C and A terminals. The relay module’s switching architecture is shown in its
default state in the diagram below:
NO 1
NC 1
Com 1
Relay 1
NO 2
NC 2
Com 2
Relay 2
NO 3
NC 3
Com 3
Relay 3
NO 4
NC 4
Com 4
Relay 4
Switching Diagram for 40-710
4 x SPDT Changeover Switches
B
C
A
SPDT Identifiers
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