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166 L4400 User’s Guide
7 Microwave Switch/Attenuator Driver
Y1152A Switch Connector SW2 and SW3 (N181x)
+VR is the Voltage source for the Relay
+VI is the Voltage source for the LED Indicator
Pin Use Pin Use
1 GND 2 IND B
3 N.C. 4 +VI
5 Drive B 6 IND A
7 Drive A 8 +VI
9 +VR 10 N.C.
10
9
1
2
Pin 1
Pin 1
Pin 1
Switch Connector
Distribution Board Connector
No Connection
To This Pin