Unpacking the Product .......................................................................................................................... 5
Chassis Description .......................................................................................................................................7
Front Panel Features ......................................................................................................................................7
Control Circuitry ............................................................................................................................................7
TEST Pushbutton ...........................................................................................................................................7
CANCEL Pushbutton ....................................................................................................................................8
Audio Inputs ..................................................................................................................................................8
Power Requirements ......................................................................................................................................8
Balanced Line Application ..........................................................................................................................12
Unbalanced Line Application ......................................................................................................................13
24 Vdc Central Power System .....................................................................................................................16
For 240 Vac Operation .................................................................................................................................17
For 24 Vdc Operation ..................................................................................................................................17
Getting Replacement Parts.................................................................................................................. 18
Table 1 Product specifications ............................................................................................................................8
Table 2 Replacement parts ...............................................................................................................................18
Table of Contents
Tables
Model 300SCW-1 Wall-Mounted Command Unit
3