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ACTION
TTS 26B
Section 3
RESULT
w i l l have a s p a r k s u p p r e s s i o n c i r c u i t
a c r o s s the pulsing contacts.
Under t h e s e
conditions, if the s p a r k s u p p r e s s i o n in the
TTS 26B i s not used e r r o n e o u s r e s u l t s will
b e obtained.
If r e q u i r e d , t u r n the
SPARK
SUP turnbutton to ON, o t h e r w i s e u s e i t i n
the O F F position
.
j.
T u r n the SEND o r SEND AND REC switch to
either of the SEND LOOP positions.
If the SEND
LOOP-REC LOOP i s used the turnbutton switch
i n the l o w e r left c o r n e r MUST be turned to SEND
R T ON 1 & 2 ( i t s n o r m a l position).
k.
It i s a s s u m e d that the loop c i r c u i t involved
has been turned down to traffic.
If-it is n e c e s s a r y
to d i a l and talk on the c i r c u i t over which p u l s e s
a r e to b e s e n t , connect a telephone s e t with
a
d i a l to the E X T DIAL jack ( o r t e r m i n a l s ) tip and
ring with a 310-type plug on the c o r d .
1. T u r n the EXT DIAL CIRCUIT switch to DIAL
RLY
-
B&G.
m .
R e s t o r e the FUNCTION key to
SEND
DIAL.
n.
P a t c h t h e c i r c u i t on which d i a l p u l s e s a r e to
be t r a n s m i t t e d to either of the LOOP SIGNALING-
SEND 1 o r 2 jacks with a 2-or3-conductor c o r d
having a 3 10- type plug on the end toward the s e t ,
using tip and ring conductors.
0.
After dialing on the c i r c u i t , i t i s possible to
l i s t e n to the ringing and to talk on the c i r c u i t by
turning the E X T DIA-L CIRCUIT switch to TALK
EM.
p.
When the c i r c u i t i s p r e p a r e d to r e c e i v e d r y
contact p u l s e s they may b e s e n t on the c i r c u i t
f r o m the i n t e r n a l oscillator by operating the
FUNCTION key to SEND OSC.
To send with the
d i a l of the telephone s e t o r with the d i a l connected
to the E X T DIAL jack o r t e r m i n a l s , r e s t o r e the
FUNCTION key to SEND DIAL and t u r n the E X T
DIAL CIRCUIT switch to DIAL RELAY
-
B &G.
This a l s o applies to a d r y contact e x t e r n a l s o u r c e
connected to the EXT DIAL jack o r t e r m i n a l s .
If the e x t e r n a l s o u r c e supplies wet contact p u l s e s ,
the EXT DIAL CIRCUIT switch should be turned
to DIAL RELAY -LOOP.
s t e p s of this p a r a g r a p h .
If i t i s d e s i r e d to send
b a t t e r y and ground, o r b a t t e r y and open on a
d r y loop, such a s into the d r y winding of a r e l a y ,
o m i t the remaining s t e p s of this p a r a g r a p h and
follow Note 1.
It i s i m m a t e r i a l which SEND o r SEND AND REC
position i s used unless conditions f o r receiving
m e a s u r e m e n t s a l s o m u s t be controlled.
The
type of receiving m e a s u r e m e n t s would be con-
t r o l l e d if this switch i s used to e s t a b l i s h both
sending and receiving conditions.
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