Connecting The Change Over Box To The Std22--System; Connecting The Supply Voltage; Voltage Supply Of The Connected Receiver - Raytheon 138-119 Operator's And Service Manual

3.2 Connecting the Change Over Box to the STD22- -System
Detailed terminal designations, cable connections, cable types are to be established
according to the wiring diagram (138--119.HP008), the actual cable and connection dia-
grams as well as the manual of the Distribution Unit 138--118.
3.2.1

Connecting the supply voltage

(see also section 4.3 -- Redundant voltage supply).
Voltage supply is effected by connecting the 24 V DC supply voltage via 2 fuses
( 6,3 A, 24 V) to the terminal board of the Change Over Box.
(see also Change Over Box wiring Diagram 138--119.HP008 ).

Voltage supply of the connected receiver

3.2.1.1
The connected receivers can be supplied with operating voltage (24 V DC) out of the
Change Over Box independent of the signal lines.
For that purpose supply lines to the receivers have to be connected at the terminal board
(terminals 3 to 13) of the Change Over Box. These terminals are fuse--protected.
Terminals 3 to 10 are fitted with fuses 1 A, 24 V (it is to connect the supply voltage for only
one receiver).
Terminal 11 to 13 are fitted with fuses 2 A, 24 V (it is to connect the supply voltage for up to
two receivers).
Edition: April 06, 2005
Change Over Box
138- -119
16
3769DOC000002