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T T S
26B
Section
3
j.
T u r n the turnbutton in the lower l e f t c o r n e r of
the panel to SEND SLEEVES.
k .
T u r n the FUNCTION switch to SEND ANDREC.
P u l s i n g i s available on the s l e e v e s of the LOOP
SIGNALING-SEND 1 and 2 , and R E C LOOP jacks
(1) A r m a t u r e of pulsing r e l a y on the s l e e v e
of SEND 2 jack.
( 2 ) Sleeves of SEND 2 and R E C LOOP jacks.
Relay c o n t a c t s n o r m a l l y closed
(.3) Sleeves of SEND 2 and SEND 1 j a c k s .
R e l a y c o n t a c t s n o r m a l l y open.
3 . 2 8 The following i s the p r o c e d u r e f o r using the Send Relay Contacts D i r e c t l y .
When a 31 0- type plug
of a 3-conductor c o r d
is
i n s e r t e d into the jack m a r k e d SEND RELAY, the tip, r i n g , and s l e e v e conductors
of this c o r d give a c c e s s to the c o n t a c t s of the SEND r e l a y and thereby p e r m i t pulsing e x t e r n a l c i r c u i t s
s u c h a s o s c i l l a t o r s , e t c . a t a speed and
%
b r e a k d e t e r m i n e d by the a d j u s t m e n t of the TTS 26B.
All
o t h e r c i r c u i t s in the s e t a r e disconnected f r o m the SEND r e l a y c o n t a c t s when the plug
is i n
the SEND
RELAY jack except f o r the s p a r k s u p r e s s i o n . c i r c u i t .
The position of the
SPARK
SUP turnbutton switch
d e t e r m i n e s whether o r not the s p a r k s u p p r e s s i o n c i r c u i t is a c r o s s the r e l a y c o n t a c t s .
The SEND RELAY
jack
is
connected to the SEND r e l a y c o n t a c t s a s follows:
a .
Tip:
a r m a t u r e
b.
Ring. normally closed c o n t a c t .
c .
Sleeve: normally open contact.
3 . 2 9 Application of s u p e r v i s o r y Signals to C i r c u i t s with E and M Signaling.
a. P a t c h the c i r c u i t s to the E & M SIGNALING-LINE and D R O P jacks
b.
O p e r a t e the LINE ( E ) key to O F F HOOK or ON HOOK t o apply off hook o r
on hook, r e s p e c t i v e l y , toward the line.
c .
O p e r a t e the DROP ( M ) key to O F F HOOK o r ON HOOK to apply off h o o k o r
on hook, r e s p e c t i v e l y , toward the d r o p .
d.
Receiving m e a s u r e m e n t s may be m a d e simultaneously.
3 . 3 0 Sending Off Hook o r On Hook on a C i r c u i t Connected to the LOOP SIGNALING-SEND 1 o r 2
o r SEND B &G jack, o r to the E & M SIGNALING-LINE o r D R O P jack.
a.
P a t c h the c i r c u i t to the a p p r o p r i a t e LOOP SIGNALING-SEND jack o r the a p p r o p r i a t e
E & M SIGNALING-E, M , LINE o r DROP jack.
b.
T u r n the SEND o r SEND AND R E C switch to the a p p r o p r i a t e position f o r the
c i r c u i t to which the s e t i s connected.
c.
T u r n the FUNCTION switch to SEND-OFF HOOK, o r SEND-ON HOOK a s d e s i r e d .
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