Black Box LT EXPRESS, TS147A Specifications
Ultra-compact portable
telephone-test set runs
on a single 9V battery.
Hold it like a regular
handset or attach the
included headset.
Versatile, easy-to-read
2 x 16 LCD panel.
Displays Caller ID both
on-hook and for Call
Waiting (CWCID).
In MONITOR mode,
listen to phone lines
without loading them.
Tone- or pulse-dialing.
Can store up to five
phone numbers.
“DataAlert” circuitry
prevents going off-hook
on low-voltage lines.
T
he LT Express is a self-
contained, self-powered,
super-tiny portable phone-test
set. It’s ideal for temporary
communication and for servicing
and installing telephone and data
lines. It’s powered by a single
preinstalled 9-volt alkaline battery
and comes with a test-cable set,
a headset that can be used with
either ear, and a kit for attaching
an optional belt clip
You can always run a regular
phone cable from the LT Express
to an extension jack for quick inoffice testing. But for testing at
wiring-closet “66 blocks,” etc., the
LT Express is designed for use
with its included dedicated cable
set only. The cable set is about 5
feet (1.5 m) long; it has a modular
plug and strain relief on one end
and self-piercing bent nose clips
with a “bed of nails” on the other.
(Extra or replacement sets are
available.)
The LT Express has a 2 x 16
LCD panel that displays a wide
variety of information, including:
LT
Express
RecallPauseT/PFlash
Mute
Talk
Bell
Mon
S
e
lec
t
M
en
u
S
E
T
U
P
(p
re
s
s
R
C
L
tw
ic
e)
0
QZ
*
8
TUV
7
PRS
6
MNO
5
JKL
4
GHI
3
DEF
2
ABC
1
Tone Pau Rcl
Flsh
9
WXY
#
Test your phone system almost
any way, from almost anywhere!
Key Features
LT EXPRESS
• On-hook and off-hook
voltage and polarity;
• Numbers currently being
dialed and how they’re being
dialed;
• Caller ID information,
messages, and faults, both
on-hook and for Call Waiting
(CWCID); and
• Battery status.
The LT Express has three
operating modes you can switch
between: TALK (the unit goes off
hook), BELL (the unit stays on
hook passively waiting for calls),
and MONITOR. In MONITOR
mode, you can listen to a line for
up to 15 minutes at a time without
loading it. Volume levels are
comparable to those of an offhook line, and there’s no popping
or clicking on the line when you
attach or detach the unit.
You can pulse- or tone-dial
with the LT Express. The unit has
Pause and Flash keys, so you can
imbed 3.8-second pauses and
hookflashes in your dialing
strings. You can also press Tone
to switch from pulse- to tonedialing in the middle of a string.
Another useful button: Hold down
Mute to mute the microphone.
The LT Express can store
and recall as many as 5 phone
numbers, each up to 19 digits
long, in battery-backed-up
memory. It also automatically
stores the most recently dialed
number so that you can do quick
last-number redialing. In an
unused LT Express, the battery
can typically maintain storednumber memory for more than
two years!
Each battery will normally
provide 30 to 50 hours of operating time, and the Express has
automatic shutoff to prevent
excessive drain.
The LT Express has special
“DataAlert” circuitry that tests the
voltage on the phone line when
you switch to TALK mode. If the
line is carrying less than 10 volts—
indicating a dead line, a data line,
or an in-use voice line— the LT
Express asks you for confirmation
before it goes off hook.
Black Box Corporation • 1000 Park Drive • Lawrence, PA 15055-1018 • Tech Support: 724-746-5500 • www.blackbox.com • e-mail: info@blackbox.com
© 2003. All rights reserved.
Black Box Corporation.
1
9/26/2003 #24246
• The LT Express (battery preinstalled).
• A cable set with self-piercing bent nose clips and a bed of nails.
• A headset that can be worn over either ear.
• An optional belt-clip kit.
• A users’ manual.
Apparent Line Resistance:
275 Ωat 20 mA
Battery Life: For a typical 9-VDC,
450-mAhr alkaline battery:
Operating: 18 hours minimum,
225 hours maximum;
Standby: 3.4 years;
Typical: 30 to 50 hours
Flash Duration: 600 ±50 ms
Line-Current Range: 15 to 120 mA
Measurement:
Voltage: 0 to 128 VDC ±5%;
Current: 10 to 140 mA ±5%;
Do not attach unit to electric-
power lines
Memory: Battery-backed-up
memory stores (5) programmed
phone numbers (up to 19 digits
each) plus last number for redial;
battery will typically maintain
stored numbers in an unused unit
for over 2 years
MONITOR-Mode Impedance:
Greater than 130 kΩ
Pulse Dialing:
Pulse rate: 10 pps ±10%;
Make/break ratio:
60% to 40% ±2%;
Interdigit interval: 820 ms;
Resistance during break: 120 kΩ
Pulse Duration:
Tone: 3 seconds;
Pulse: 3.4 seconds
Return Loss: 14 dB at 600 Ω
Ringer Equivalence: In BELL mode:
0.0 (no ringer load)
Tone Dialing:
DTMF output into 600 Ω:
Tone-frequency error: ±1.5%;
Tone level:
High group: -6 ±2 dBm;
Low group: -8 ±2 dBm;
High vs. low difference:
2 ±1 dBm
User Controls:
(1) Left-side-mounted TALK/
BELL/MON slide switch for
operating mode;
(1) Right-side-mounted
microphone-mute pushbutton
(must be held down);
(4) Front-mounted pushbuttons
(Flsh, Tone, Pau, Rcl) for
various options;
(1) Standard front-mounted
12-key phone keypad
Interface:
Telephone system:
Modular telco;
Headset: 2.5-mm cell-phone type
Connectors: To telephone network:
RJ-12 (“6-wire RJ-11”) F;
To headset: 2.5-mm cell-phone
headset jack
Indicators: (1) Front-mounted 2-line
x 16-character reflective supertwisted liquid crystal display
(LCD) panel
Temperature Tolerance:
Operating:
32 to 122°F (0 to 50°C);
Storage:
-4 to +140°F (-20 to +60°C)
Humidity Tolerance: 10 to 90%
noncondensing
Altitude (Maximum): 10,000 ft.
(3048 m)
Enclosure: High-strength ABS plastic
Power: From 9-VDC alkaline battery,
typical:
BELL mode (timed out): 15 µA;
TALK mode:
CWCID OFF: 2 mA;
CWCID ON: 12 mA;
MONITOR mode: 25 mA
Size: Excluding lanyard (top hook):
7.3"H x 2.5"W x 1.7"D
(18.5 x 6.4 x 4.3 cm)
Weight: With cable set: 0.6 lb.
(0.3 kg)
The complete package
Specifications
Ordering Information
ITEM CODE
LT Express......................................................................TS147A
Cable Set with Bed of Nails and
Belt Clip (Spare) ..........................................................TS148
Y
ou might also need:
RJ-11 (4-Wire) Modular Cable, 4-ft. (1.2-m) ......EL04M-04
It’s easy to attach the cable set, even with the optional belt clip.
And replacing the battery is a snap, too!
Installing the
cable set
Installing the cable set
and belt clip
Replacing the
battery
2
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