0II-727109-001, Issue 3, 2/00
1
Printed in Taiwan
SPECIFICATIONS:
PHYSICAL
Length: 6¾ inches (17.1 cm)
Width: 2-3/8 inches (5.1 cm)
Height: 2½ inches (6.3 cm)
Storage Temperature: -20°C to +60°C
Operational Temperature: -5°C to +40°C
ELECTRICAL
Loop Limit: 2.4 kOhms at 48 Vdc
15mA minimum loop current)
Monitor Impedance:
6K Ohms, typical at 1 kHz
Off-Hook DC Resistance: 150 ohms typical
Rotary Dial (Pulse) Output:
Pulsing Rate: 10 pps ±1pps
Break/Make Ratio: 60/40 ±3%
Interdigit Interval: >300 ms
Leakage During Break: >50 kOhms
DTMF (Tone) Output:
Tone Frequency Error: ±1.5% (maximum)
Level Per Tone Pair: +1 dBm maximum,
High vs. Low Tone Difference:
2dB ±2dB
Telecom Electrical Safety Classification: TNV-3
Ordering Information:
Part Number
Description
17800-500
TS17 Butt Set,
with Alligator
Clip Line Cord and
Belt Clip
17800-000
TS17 Butt Set
(no line cord or belt clip)
IMPORTANT SAFETY PRECAUTION
■
Good safety practices prohibit the
connection of the TS17 Test Telephone and
similar test telephones to 115/230 Volts AC
commercial electrical power. If the TS17 Test
Telephone is connected to commercial power,
all warranties are immediately voided.
■
Not for Outdoor Use!
■
Legal Requirements may exist regarding
permission to connect equipment to a Telecom
network operated by a public network operator.
TS
®
17 Portable Test Telephone
Description and Use
FEATURES
The TS17 Portable Test Telephone
employs the latest technology in integrated
circuit design to provide:
■
Talk and Monitor Modes.
■
Tone (DTMF) and Pulse Signaling.
■
Continuous Polarity Indication.
■
Audible Ringer.
■
Listening for noise.
■
High Impedance Monitor Mode.
■
Field Replaceable Line Cord and
Belt Clip on some models.
This portable test telephone, often called
a "butt-in”, is a self-contained, line
powered (no battery required), portable
handset used by installers, repair
technicians, and other authorized
personnel for testing and temporary
communications on metallic voice type
telephone lines.
CONTROLS AND INDICATORS
TALK/MONITOR Mode. The test
telephone has a two-position slide switch
located on the side of the handgrip near
the receiver. The switch is labeled TALK/
MONITOR.
In the MONITOR position, the TS17 is
on-hook with a 6K Ohms impedance
audio coupling to the telephone line. This
allows for telephone line monitoring
without disrupting conversations, or
network signaling. In this position, the
TS17 also places an audible ringer
across the line.
In the TALK position, the TS17 is off-hook
and may be used for dialing and talking.
In this mode, the TS17 performs as an
ordinary telephone.
Audible Ringer. The TS17 Test
Telephone has an audible ringer to
indicate incoming calls when the test
telephone is in the MONITOR mode.
PULSE/TONE Switch. This two-position
slide switch, labeled PULSE/TONE, is
located on the side of the handgrip, just
below the receiver. The switch selects the
dialing type: TONE for DTMF dialing or
PULSE for pulse dialing.
Note: The TS17 is not polarity sensitive
and will function normally regardless of
telephone line polarity.
Polarity. The red LED, located below the
keypad area, will light up when the red
test lead is connected to a more positive
voltage than the black test lead.
Keypad. All 12 dialing keys will send
DTMF tones. Ten of the 12 keys send dial
pulses. Asterisk (
❋
) and pound (#) will not
send dial pulses. If the asterisk (
❋
) key is
pressed when the unit is in PULSE mode,
the dialing mode will be changed to tone
dialing.
OPERATION
Monitoring. Move the TALK/MONITOR
switch to MONITOR and connect the test
leads to the telephone line under test.
Monitoring may now be done without
disrupting traffic. Typical monitoring
applications include:
■
Verifying that the line under test is idle
before going off-hook.
■
Hunting for trace tones.
■
Listening for noise.
If the telephone lines under test include
data lines, it is best to use the MONITOR
mode when hunting for trace tones to
reduce the possibility of interrupting a data
service.
Polarity Check. Move the TALK/
MONITOR switch to TALK. The red LED
will not light if the red test lead is
connected to the ring (negative) side of the
line and the black test lead is connected to
the tip (positive) side of the line. The red
LED will light if the test leads are reversed;
that is, with the red test lead connected to
the tip (positive) side and with the black
test lead connected to the ring (negative)
side.
Dialing
1.
Move the TALK/MONITOR switch to
the MONITOR position.
2.
Move the PULSE/TONE switch to
either PULSE or TONE depending on
the type of signaling required.
3.
Connect the line cord clips to the
telephone line and verify that the
telephone line is idle.
4.
Move the TALK/MONITOR switch to
the TALK position. Listen for dial tone
(when furnished).