Advertisement
TTS 26B
Section 3
ACTION
RESULT
d ,
If the speed of the pulses being generated
by
This turns the s e t on.
The LINE ( E ) and DROP
the internal oscillator is to b e m e a s u r e d , turn the
(M) l a m p s should light. If they do light proceed
SEND P P S switch to the speed to be measured.
to s t e p f. If they do not light pr0cee.d to s t e p e .
Otherwise t u r n this switch to any position except
PWR O F F .
e.
If the lamps did not light remove the dc power
The lamps should light.
If they s t i l l do not the
supply f i r s t , then change the 31 0-type plug to the
s e t probably is not receiving power.
o t h e r 48 VOLT jack, and then reconnect the
48-
volt dc power supply.
f .
F o r a measurement over a d r y loop circuit
s u c h a s f r o m the internal oscillator o r f r o m a
d i a l connected to the.EXT DIAL jack o r t e r m i n a l s ,
o r f r o m a distant office over such a c i r c u i t , t u r n
the RECEIVE switch to REC LOOP. If the pulses
a r e to be received over a wet loop t u r n the
RECEIVE switch to REC
B&G
ON LOOP.
g.
T u r n the METER CIRCUIT switch to 0-25 P P S
h.
If the m e a s u r e m e n t i s to be made over a loop
c i r c u i t f r o m a distant office patch the c i r c u i t
(turned down to traffic) to the LOOP SIGNALING
REG LOOP jack.
If a wet loop is involved battery
( - )
should b e on the tip and ground
(t)
on the ring.
If the internal oscillator o r a local dial i s to be
m e a s u r e d patch the LOOP SIGNALING
SEND
1 o r
2 jack to the LOOP SIGNALING REC LOOP jack,
tip and ring, with a cord having a 3 10- type plug
on e a c h end. If a dial i s to be measured locally
connect i t to the EXT DIAL jack o r terminals.
i .
T u r n the FUNCTION switch to CAL METER.
Adjust the METER CAL control to obtain 2 5 on
'
the P P S s c a l e .
j.
If the internal oscillator i s to be measured
If measuring a local dial, d i a l a s e r i e s of z e r o s
o p e r a t e the FUNCTION key to SEND OSC. If a
during measurement.
If receiving f r o m a
m e a s u r e m e n t of a local dial speed o r a m e a s u r e -
distant office request i t to send the pulses for
m e n t of pulses received f r o m a distant office
is
the speed measurement.
t o b e m a d e r e s t o r e the
FUNCTION
key to SEND
DIAL, and
turn
the EXT DIAL switch to DIAL
RELAY
-B
&G.
k.
The LINE (E) and DROP
(M) keys should b e
n o r m a l .
The EXT
DIAL
CIRCUIT switch is not
in the measuring circuit.
The SPARK
SUP turn-
button is not involved.
1. T u r n the FUNCTION switch to SEND AND REC
Read the pulse speed i n p u l s e s p e r second on the
P P S s c a l e of the m e t e r .
Advertisement
