No.261 TELEPHONE -SNAP
HANDSET
HOOK LONG-LINE DIALING SWITCH (MOMENTARY CONTACT)
“DIAL.
/
/
/
TALK.
TEST
I “MONITOR,
(SHOWN iN “DIAL. TALK. TEST” . ..RED --MARKING SHOWING) .---
HANG-UP” P(
;4-WAY
UIsnJ \ct NGLlNG)
4-WAY ALLIGATOR
CLIPS
ALLIGATOR
(2)
CLIPS
SUGGESTED USES: The No. 261 Telephone of functions: I.
Handset
provides
a convenient
Troubleshooting protective circuits for grounds and shorts, in I ieu of a meter.
2. Testina ---iL circuits.
audiblv
3. Monitoring telephone
for
nresence
of
means of
determining
voltaae
4.
Communicating (speaking), messages during installation
via
5.
Dialing
during
telephone
numbers
location
on telephone
telephone lines during installation dialers and digital communicators. telephone and testing.
lines
and test
lines,
testing
performing
with
as with
ing
of opens,’
and other
of
ret ipients
conventionat
a variety
au.tomatic
of
dialer
telephones.
DESCRIPTION: (See Diagram) The telephone two position Line Dialing”
in addition to handset, “Dial, Talk, Test”/“Monitor, momentary switch.
its
receiver Hang-up”
has a dial, and “Long
sliders” to minimize with two “tubular spring loaded alligator type clips wires and piercing insulation
Its attached five foot long leads are provided tangling. The two leads terminate in versatile which incorporate a variety of ways of gripping to insure good electrical.contact. The large snap hanging up the
and transmitter, rocker s.witch
hook attached adjacent to the unit’s receiver is convenient for operation or for clipping to a belt. handset for “hands ,free”
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The handset’s
rocker
switch
= “Dial,Talk, = “Monitor,
Red Marking Showing Black Marking Showing A second resistance I.
switch is through
Troubleshooting: Marking Showing) a.
a momentary the handset Place the position.
positions:
Test” Hang-up” one which, and assists
rocker
Position Position when depressed, reduces long line dialing.
switch
in the
“Dial,
Talk,
the
Test”
circuit
(Red
An open on a protective circuit may be located by connecting the handset leads across the positive (+I and neqative t-1 sides of the circuit at If-voltage is present at a particular various points along the circuit. point, a “click” wi I I be heard in the handset’s receiver, its loudness dependent on the vo I tage. I f no sound is heard, voltage is not present and an open is located between that point and the last place a click can be heard.
b. An open polarity portion a click negative c.
has two
in foi,l may be of the will be voltage).
on a show window or elsewhere in a loop of the same detected by connecting the handset across the suspected loop. If an open is present in the section being tested, heard (although much weaker than from a positive and
An intermittent ground or short on a protective circuit will result in a “crack1 i ng” or “frying” sound in the No. 26 I when it is connected across the circuit wires. The circuit should be opened at various points to determine when the sound ceases.
2. Testing for voltage on telephone lines or other circuits may be done simply connecting the No. 261 across the wires in question with the rocker switch in the “Dial, Talk, Test” (Red) position. D.C. is indicated by a single click as the connection is made. A.C. resurin a continuous hum after the connection i s made.
by
3. Monitoring of calls made by automatic telephone dialers or digital communicators may be accomplished by placing the No. 261’s rocker switch in the “Monitor, Hang-up” (Black) position and connecting its leads across the telephone lines. The presence of the No. 261 will not affect the operation of the equipment, as long as the switch is kept in the Wonitor,Hang-up” (Black) position. 4. Communicating (speaki’ng) messages during installation and uncertainty involved
over
the telephone lines directly to recipients of and testing greatly reduces the amount of time in testing out all telephone numbers on the tape.
dialer
a.
After dialer and tape is installed and telephone lines have been connected, place the No. 261’s rocker switch in the Wonitor,Hang-up” (Black) position and connect the No. 261’s leads across the telephone line in parallel with the dialer (e.g. No. 612).
b.
Put
DIALER switch
c.
Act
vate
d idler
in the and
listen
“Connected to
number
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to
phone
being
I ines”
called.
pos ition:
5.
d.
At the completion of the first diaied number wait until the first ring is heard and at that time push the No. 26l!s rocker switch to the “Dial, Talk, Test” (Red) position and the DIALER switch to the “Disconnected This will now put the installer in direct from phone lines” position. telephone communication with the recipient of the call and enable him to verify that the right party has been reached.
e.
To hang up,
f.
Repeat
steps
simply “b”
return through
the
No.
” e ” for
261’s each
switch number
to
“Monitor,
Hang-Up”
(Black)
programmed.
Dialing a telephone number may be accomplished as follows: Place the No. 261Js rocker switch in the “Dial, Talk, Test” (Red1 position, connect the No. 261 across the telephone I i nes, I i sten for dial tone, and dial. To hang up, press the No. 261’s rocker switch to “Monitor, Hang-up” (Black).
S+ECIFICATlONS: Physical:
*Length: Width: Thickness: **Height: Leads :
B- I /2” (21.6 cm) 2- I /2” ( 6.4 cm) I- l/4” to i-3/4” (3.2 cm to (7.6 cm) 3” (I.5 m) long with tubular 5’
*Not incl. 3”.(7.6cmI long snap cl ip. surface. **Resting on back, on flat Weight:
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16 oz.
(0.5
kg.)
4.4
cm)
sliders
and wire
clips
