RS 43-114 User manual

Cat. No. 43-114
TELEPHONE
TESTER
PLEASE READ BEFORE USING THIS EQUIPMENT
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TABLE OF CONTENTS
Introduction 3
Test Controls and Functions 4
Test Selection Keys 5
Preliminary Operation (Long Loop) 6
Tests
Cord............................................ 7
Loop (Switch Hook) 8
Dial 9
Transmit
10
Receive 10
Short Loop 11
Ringer 12
INTRODUCTION
The Radio Shack Telephone
Tester represents amulti-
function, value featured
advance in telephone service
technology.
With privately owned
telephones on the increase, the
Tester allows fast, convenient
and positive tests of basic
telephone functions. Office
Equipment Sales/Service
organizations, will benefit as will
Telemarketing professionals.
NOTE: This unit may not
properly test Electronic Key
Systems or PABX Key Sets.
•Avoids needless outside
repairs
•Checks most common phone
problems including cords and
plugs.
•Microprocessor-controlled for
accurate diagnosis
•Tests Touch-tone, Rotary
Pulse Dialing and Cordless
phones
•Checks Answering machines
•Tests single line units, and
is
adaptable for 2-line phones.
Telephone Answering Devices 13
Telephone Terminology 14
Care and Maintenance
15
Specifications 16
Schematic 18-19
2
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Lr AtSK Of ELECTRiC SHOCK fI
.. , 00 NOT OPEN I •
CAUTION fO AEOUCE THE RiSK OF ELECTRIC
SHOCK
DO NOT REMOVE COVER tOR BACK)
NO uSER·SERViceASlE PARTS INSIDE
REfER SERVtCi"'lG TO QUALIFIED SERVICE
PERSON~El
The lightning symbol is to remind you that there is dangerous
voltage inSide the unit. Do not open the enclosure
The exclamation symbol indicates there is important operating
information
in this manuaL
©Copyright 1985, Tandy Corporation
3
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TEST AREAS AND CONTROL BUTTON FUNCTIONS
~
~
~
~
SHORT
LOOP
r::l V. EJOMIT r;::l r::l ~
~D D~~
TEST SELECTION BUTTON INDICATORS
Test
Selection
Indicators
Test
Selection
Buttons
Dial and
Conductor
Display
Convenience
Outlets
4
Pass Indicator
Fail Indicator
Power Switch
TEST SELECTION BUTTONS
Cord
Press for Cord Test. Checks the
number of wires
in the Handset
or Line Cord. Also verifies the
condition of either cord.
Loop Test
Press to verify proper switch
hook impedance parameters.
Short Loop
Sets electrical conditions which
permits you
to duplicate use
with aclose-by Central Office.
Long Loop
Presents conditions duplicating
aconnection to aCentral Office
of some distance from the test
phone.
When aTest Selection
Button is pressed, the
LED
directly above will light.
However, when either the
DIAL, X-MIT or
RECV Test
5
Dial
Press before initiating atest call
to verify dialing accuracy.
X-Mit
Press to test handset
transmitter operatioo.
Recv
Press to test handset earpiece
operation.
High Ring
Checks ringer operation at high
voltage level, simulating a
SHORT loop.
Low Ring
Checks ringer operation at low
voltage level to simulate a
LONG loop.
Selection Button is pressed,
not only will the
LED above
the button light, but either
the SHORT LOOP or LONG
LOOP LED will also light.
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POWER PLUG IN AC
ttl
~
START LOOP SOME PHONES I
ANSWERING DEVICES
MAY REQUIRE AC
BUTTON
l:o~1 10 Ih~
~
1UNPLUG PLUG IN
CORDI
BOTH ENDS
WIRES FROM
OF EITHER
~TI
PHONE
HAND SET
CORD
[8i
OR
TEST LINE CORD
~
INTO TEST JACKS
BUTTON
o0
o •
NOTE: If you wish to test awall
type telephone, insert the
modular plug of the phone into
aModular Duplex Wall Phone
Adapter, Cat. No. 279-359.
Then insert acord, terminating
in amodular plug at each end,
Cat. No. 279-374, into the
bottom jack on the adapter. The
free plug on the cord is then
used to connect to the Tester.
4. The LED in the DISPLAY on
the panel will light. Either the
digit 2or the digit 4should
be shown to indicate the
number of wires in the cord.
5. At the same time either the
PASS LIGHT or the FAIL
LIGHT will be illuminated.
If PASS lights, the cord
under test is usable.
If FAIL lights, replace the
cord.
6. After testing the LINE CORD
and re-installing it into the
telephone (assuming the
cord is good), remove the
HANDSET CORD in a
similar way.
7. Repeat Steps 1to 6for the
HANDSET CORD, making
sure to connect it to the
jacks labeled HANDSET on
the panel.
DISPLAY
•PASS LIGHT
SHOWS
REPEAT TEST ON NEXT CORD
~OR8J
OR PROCEED TO NEXT TEST
• FAIL LIGHT
WIRES
IN CORD REPLACE CORD rREPEATTEST
To check the total number of
wires, and to verify their
electrical fitness, in either the
Line Cord or the Handset Cord,
follow the steps below:
1. If the cords of your phone
disconnect, unplug the
modular line cord connector,
(the wire that connects to
the wall).
2. Connect both ends of the
cord into the modular
sockets in the test area
labeled CORD TEST JACKS
which is located on the
upper ~ight corner of the
front panel. Be sure to insert
the Line Cord into the jacks
labeled LINE CORD.
3. Press the CORD TEST
button.
CORD TEST
Wall
Telephone
279-359
o
PRELIMINARY
OPERATION
Before beginning aspecific
function test, perform the
following steps:
1. Insert the AC Line Cord into
asource of 110-120 volts,
60 Hz.
2. Press the POWER switch.
The power indicator will light
showing that power is
present.
3. Press the LONG LOOP
button. Initial tests will be
made in this configuration.
4. If the phone or device to be
tested requires the use of a
separate AC adapter or
other source of household
AC, plug the device into one
of the convenient outlets
located on the front apron of
the Tester.
Two Line Phones: To connect
atwo line phone to the Tester,
use a2-Line Coupler, Cat. No.
279-401. Insert the modular
plug into the adapter. You can
then test each line separately
with each cord from the
adapter.
67
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MBER
E
IF USING TONE PHONE DISPLAY SHOWS WRONG NUMBER
G.J DISPLAYS 11 !.1!J DISPLAYS 12 OR NO NUMBER OR FAIL LIGHT ON
PASS IFAIL LIGHTS OFF UNIT NEEDS SERVICE
3
:tJ
~
DIAL
TEST BUTTON
DIAL EACH NUMBER DISPLAY SHOWS NU
AND CHECK DISPLAY DIALED ON PHON
~
PROCEED
--.,..
•PASS
HANG UP •FAIL
LIGHT
ON LIGHT ON
PROCEED PROCEED
•FAIL •FAIL
LIGHT ON
~
liGHT OFF
...
UNIT NEEDS SEAvlCE
I UNIT NEEDS SERVICE
2RECONNECT
~
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WIRES TO TEST
LOOP PHONE
TEST
~~UG I~P;";;N;:
TEST BUTTON
LOOP TEST DIAL TEST
This test checks for an
acceptable DC resistance value
within the Switch Hook Loop.
When the Handset is off-hook,
the Central Office should "see"
DC resistance between 57 and
600 ohms. This range is tested.
1. Reconnect LINE CORD and
HANDSET CORD to the
phone.
2. Plug LINE CORD into the
test area labeled TEST
JACKS -PHONE.
3. Press the LOOP TEST
button.
4. Lift the Handset from the
switch-hook. If the PASS
LED lights, you are within
the range of 57 to 600
ohms. If the FAIL LED lights,
the phone needs service.
5. Replace the Handset on the
switch-hook. If the circuit is
restored to the 10 megohm
level the FAIL light will go
ON.
If the FAIL LED was ON and
now goes off
or remains off, the
unit requires service.
The following steps will check
for proper output of each digiti
character of either arotary dial
phone or key-pad of apulse or
tone phone.
1. Remove the Handset from
the Switch-Hook.
2. Press the DIAL TEST button.
3. While watching the DISPLAY
panel LEOs, dial each digit
on the phone. If operational,
the individual digit will be
displayed.
If no number or the wrong
number is shown or
if the FAIL
lamp lights, the unit needs
service.
Note: If a tone phone is
under test, the *key will
display an 11. The # key will
display a12. Both PASS and
FAIL lamps
will be off while
testing a tone phone.
89
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4
~
SPEAK •PASS LIGHT
FLICKERS WHEN TALKING
~
PROCEED
TRANSMIT NO INDICATOR LIGHTS
TEST UNIT NEEDS SERVICE
BUTTON
6
SHORT
LOOP
SET·UP
[SHORTl
• LOOP'
JREPEAT
TESTS
3. 4, 5
TRANSMIT TEST
To check operation of the
telephone mic:
1. Lift the Handset from the
switch-hook.
2. Press the X-MIT button.
3. Speak into the microphone.
4. If the unit is functional, the
PASS lamp will flicker as
you speak. If NO indicator
lights, the unit is defective.
5
[iJ
LISTEN NO DIAL
~\
TONE
RECEIVE UNIT NEEDS
TEST DIAL TONE SERVICE
BlJTTON PROCEED
RECEIVE TEST
To check the function of the
earpiece of the phone:
1. Lift the Handset from the
switch-hook.
2. Press the REC'V button.
3. Listen for adial tone. If one
is heard, the unit is working.
If no tone is heard the
receiver is defective.
10
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}
SHORT LOOP
All previous tests have been
made as if the telephone was
connected to distant Central
Office.
To test the unit as if it were
trying aconnection to anearby
Central Office:
1. Press the SHORT LOOP
button.
2. Repeat Test 3DIAL TEST
3. Repeat Test 4TRANSMIT
TEST.
4. Repeat Test 5RECEIVE
TEST.
5. Arrange for service or
proceed
to other tests based
on the criteria for passing or
failing Tests
3, 4and 5.
11
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r=l
~
SET TAD
10 01
CONNECT
!iJ~
L:.:.:J
TELEPHONE
ANSWERING DEVICE 0
C4I
-
-
~
IF UNIT FAILS ANY STEP =TO
UNIT NEEDS SERVICE
INTO TEST JACKS IANSWERI
BUTTON
TAD ANSWERS LISTEN LEAVE CHECK
!---THEN_
~~
MESSAGE
I~ ~~I
IF TAD
~
~
~~
HAS REMOTE
CHECK
OPERATION
OUTGOING
IPLAYBAckl
MESSAGES
~
SOFT OR LOUD RING TEST
PROCEED COMPLETE
NO RING UNPLUG
SOME PHONES RINGING
MAY NOT RING ON LOW RING
BUTTON SERVICE ONLYIF PHONE
NO RING HAS BEEN APROBLEM
7
HANG UP LOUD RING
HIGH
RING PROCEED
RING NO RING
TEST
~
UNIT NEEDS
..-SERVICE
RINGER TEST
Test 5was finished with the
Handset off-hook.
To check the
operation of the RING
mechanism:
1. Hang up the Handset. (Go
on-hook.)
2. Press HIGH RING to check
high ringer voltage (nearby
Central Office) operation.
3. If the telephone rings loudly,
proceed. If not, the ringer
is
defective.
4. To check low level operation
(distant Central Office),
press LOW RING.
5. If either alow volume or
high level ring
is obtained
the unit
is OK.
Note: Some phones may not
produce aring under LOW
RING test.
In such cases,
service is indicated only if
ringing has been averified
problem or area
of concern.
6. Unplug the phone from the
front panel
to stop ringing.
7. Turn POWER switch OFF.
Testing is now complete.
TELEPHONE
ANSWERING DEVICE (TAD)
The following steps will check
essential operation of atypical
Telephone Answering Device.
1. Connect aknown good
telephone to the PHONE
TEST JACK
on the front
panel.
2. Connect the TAD to the
AUX TEST JACK directly
beneath.
3. Set the controls of the TAD
to answer an incoming call.
4. With the phone on hook,
press the HIGH RING
button.
5. The TAD should start
operation, answering an
incoming call.
6. As soon as the TAD
answers, press the X-MIT
button.
7. Lift the handset and listen
to the TADs outgoing
message
in the phone's
receiver.
8. When you hear the TAD's
tone, indicating that you
may leave your message,
speak clearly into the
phone, leaving atest
message.
9. Switch the TAD to rewind
and begin playback of your
test message. Verify that it
was recorded accurately.
10.
If the TAD features remote
operation, be sure to check
that as well using the
appropriate device.
12
13
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MAINTENANCE
Your Telephone Tester represents afine example of electronic
engineering and construction. As such it should
be treated
accordingly.
We offer the following suggestions so you will enjoy this
product for many years to come.
If at anytime you suspect that your unit
is not performing as it should,
stop by your local Radio Shack store. Our personnel are there to
assist you and arrange for service, if needed.
TELEPHONE
TERMINOLOGY
In order to assist you to use
and understand the flexibility of
the Tester and to translate the
results of the various tests into
proper action, the following
overview of some typically used
terms
is offered.
The Loop: Your phone is
connected to acentral office by
means of apair of wires. This
pair may
be relatively short (a
few blocks), or much longer,
such
as afew miles.
Usually there is astandard
voltage of 50 volts DC present
in your phone with the handset
on the hook. If you are close to
the central office, ashort loop,
the current might be as high as
0.08 ampere. If you are several
miles away, along loop, that
current might be as small as
0.02 ampere instead.
Handset: Although today the
handset comes in many shapes
and sizes, it is still comprised of
atransmitter, into which you
speak, and areceiver, from
which you hear the other
phone. The transmitter
is
typically amic made of loosely
packed carbon granules. The
receiver is aminiature
loudspeaker.
14
The Hookswitch: The buttons
on the cradle of your phone,
are connected to amulti-
contact switch inside the
phone's case. When you lift the
handset and the switch makes
an electrical connection, it is
off-hook. The phone is
disconnected when the handset
is on-hook.
The Ringer: While electronic
ringers produce sound
differently and have values
unique to their family of circuits,
the classic ringer consisted of a
gong struck by aclapper.
Today, electronic circuits
produce warbles, or other new
sounds. The resistance of older
coils are checked by the Tester.
Newer circuits are similarly
tested.
Central Office: The switching
equipment that provides local
exchange telephone service for
agiven geographical area,
designated by the first three
digits of the telephone number.
®
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" :',
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(iJ
Keep it dry. If water should get on it,
wipe it off immediately. Water contains
minerals that can corrode electronic
circuits.
Do not store
in hot areas. High
temperatures can shorten the life of
electronic devices, damage batteries,
and can even distort or melt certain
plastics.
Do not drop your product. This will
likely result
in failure to operate. Circuit
boards can crack and cases may not
survive the impact. Handling your
product roughly will shorten its useful
life.
Do not use or store in areas of high
levels of dirt or dust. The electronics
may
be contaminated .Any moving
parts will wear prematurely.
Do not use harsh chemicals, cleaning
solvents or strong detergents to keep
your unit looking new.
You need only
wipe it with adampened cloth from time
to time.
15
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SPECIFICATIONS NOTES
Dial Speed
Make/Break Ratio
Loop Test
Receive Test
Transmit Test
Ring Test (Typical)
8PPS -
11 PPS ±.1275 PPS
58 -64% :!:: .6%
57 -600 Ohms DC Resistance
-26 dBm
::+ 5% reference to 600 ohms
-20 dBm ±5% reference to 600 ohms
Low Ring 45 VRMS
High Ring
90 VRMS
Typical ±2.3%
of Fa
Maximum ±3.5% of Fa
Supply Voltage
Amplitude for
Detection
Touch
Tone Frequency
Detect Bandwidth
Min -19 dBm reference
to 600 ohms
Max
-2 dBm reference to 600 ohms
Minimum 105
VAC
Typical 120 VAC
Maximum 135 VAC
Note: Above specifications based on 120 VAC only.
Cord Test Pass 2or 4conductor. Tests inner pair, tip
and ring and outer pair. Position of
conductors within the inner pair and
position of conductors within the outer
pair may
be reversed within the pair
and the cord will pass.
Fail Fails
on 0, 1, or 3conductors. Also fails
if one conductor in one pair is shorted
to one conductor in the other pair.
Unit Weight 13 pounds
16 17
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SCHEMATIC DIAGRAM
Schematic subject to change. For latest
schematic and parts, contact Radio Shack
National Parts, 900
E. Northside Dr., Fort
Worth, Texas 76104.
it, SAFETY CRITICAL COMPONENTS: REPLACE WITH PARTS
RECOMMENDED
BY MANUFACTURER.
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