User`s guide

176 L4400 User’s Guide
7 L4445A Microwave Switch/Attenuator Driver
Y1154A Switch connector SW3 Through SW8 (N181x)
Pin 1
Switch Connector
Distribution Board Connector
No Connection
To This Pin
No Connection
To These Pins
Switch Connector
Distribution Board Connector
+VR is the Voltage source for the Relay
+VI is the Voltage source for the LED Indicator
Pin Use Pin Use
1GND 2IND B
3N.C. 4+VI
5 Drive B 6 IND A
7Drive A 8+VI
9+VR 10N.C.
10
9
1
2