Bell System Practices 636A Manual page 17

A H Y 11 A 11 RELAY
IN lA
U.2 L I NE C I RCU I T
H A ll
BAT
r- - & m - - -,
I
I
?
I ,1
A
GRO
4
i
L
2
GRO
-
LEGEND:
PU- PICKUP KEY
H- HOLD KEY
LS- LINE SWITCH
HS(Al- HEADSET JACK A
Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Feb 04, 2012 14:19:08
BSP 502-610-410-i0 2_1972-04-17 .jpg
I
OR
PU
I
I
5
2W IW (O-W) [ Y ]
L
LG
-
- - -
Fig. 7-Busy Lamp Control Circuit with 6C KTU
H
TBI-
(R-BKJ 5
(Y- G) (BK-BLJ
A-H
IW-0)
TBlll
1 8 ( Y l
( 0 - V )
NOTE S :
I .
RANGE OF ''Au RELAY AND 6C KTU
1 4 VOLTS FOR 190 MAX,
20 VOLTS F O R 5 2 0 MAX.
26 VOLTS F O R 8 4 0 WA X .
lEAD ( Y - B R ) D E S I GNATION B l O R LS lOT USED .
2. WHEN STATION BUSY LAMP FEATURE IS REQUIRED WITH A SET THAT
HAS A 0 1 2 0C MOUNT I N G CORD t.IANUFA.CTURED P R I O R TO
TH I S C I RCUIT WUST BE USED .
I
I CURRENT COLOR CODE .
( J 1.10
COLOR CODE .
ISS 2, SECTION 502-6 1 0-41 0
NET. G
OR
(O-W) ( S )
( B R ) (S-G]
J
I Y I ( S-W
(0-BK) (BL-W]
5
I
OR
TO OPERATE BOTH RELAYS IK S E R I E S .
TO OPERATE BOTH RELAYS I N S E R I E S .
T O OPERAT[ BOTH RELAYS I N S E R I E S .
m -68
HS(A)
TPA 5 3 2 1 9 1
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