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176 L4400 User’s Guide
7 Microwave Switch/Attenuator Driver
Y1154A Switch connector SW3 Through SW8 (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
3N.C. 4+VI
5Drive B 6IND A
7Drive A 8+VI
9+VR 10N.C.
10
9
1
2
No Connection
To These Pins
Switch Connector
Distribution Board Connector
Pin 1
Switch Connector
Distribution Board Connector
No Connection
To This Pin