Black Box TS940A-R2 Specifications

1

Test T1, Fractional T1,
E1, Fractional E1,
asynchronous, and
synchronous facilities
and equipment.

Control via front panel
pushbuttons or a local/
remote VT100 terminal.

Comes with RS-232,
V.35, RS-422/530, X.21,
T1, and E1 interfaces.

Informs you of G.821
performance
measurements.

Speeds from 50 bps to

8.192 Mbps.

Includes batteries and
built-in recharger.

Ideal for test labs and
troubleshooting in the
field.

I

f you need a sophisticated yet

easy-to-use bit error rate tester in
a handheld package, you’ve found
it. The BERT Tester enables you to
analyze a wide array of T1,
Fractional T1, E1, Fractional E1,
asynchronous, and synchronous
communication facilities and
equipment such as modems,
multiplexors, CSU/DSUs, NTUs,
and more.

The BERT Tester is a must­have for test department
technicians, equipment installers,
and troubleshooters in the field.
Use it to test a leased line with
modems or line drivers at each
end, a DDS link with CSU/DSUs at
each end, or a T1 facility that
connects a pair of T1 CSUs. You
can even use the BERT Tester to
make sure that an expensive
satellite link with modems at each
end is transmitting data as it
should. The tester also offers
reliable testing of terminals,

2.048-Mbps facilities with NTUs at

Easy testing of T1, E1, async, and sync lines

using a compact and portable device!

Key Features

BERTTESTER

their ends, and time-division,
statistical, T1 and E1 multiplexors.

The BERT Tester simulates
real data passing through a
data communications link, then
determines the performance
of that network or piece of
equipment. It generates and
recovers a number of standard
data patterns. The device then
monitors the data passing through
the link, compares data received
with data that you‘ve already
transmitted, and determines line
quality. The tester can be used
alone (at one end of the system
you want to test) or in pairs.

Each tester comes with
V.35, RS-232, RS-422/530, X.21,
T1 (1.544-Mbps DS-1), and E1
(2.048-Mbps G.703) interfaces.
In T1 and E1 modes, the BERT
Tester counts and displays bit
errors, transmit and receive
frequency, test seconds, bit error
rate, and G.821 performance
measurements. T1 mode also

displays receive level and frame,
cyclic redundancy check, and
bipolar violation errors. In addition,
you can insert a variety of test
patterns in all or specified time
slots/DS0s (contiguous or non­contiguous), making this tester
ideal for Fractional T1 or E1
testing.

In async and sync test modes,
the BERT Tester generates test
data in various patterns and
formats. Choose from 28 async
and 75 sync speeds. When set
to test lines in async mode, the
device counts and displays
character errors, characters
received, total test seconds, and
errored seconds. And in sync
mode, the BERT Tester not only
counts and displays bit errors, the
bit error rate, total test seconds,
and errored seconds, but it also
displays the transmit frequency,
clear to send delay, bits received,
and G.821 measurements.

Black Box Corporation • 1000 Park Drive • Lawrence, PA 15055-1018 • Tech Support: 724-746-5500 • www.blackbox.com • e-mail: [e-mail]

© 2005. All rights reserved.

Black Box Corporation.

5/23/2005 #25773

2

Use the BERT Tester alone or in pairs .

BERT Tester

BERT Tester

BERT Tester

Local

Modem

Telephone

Line

Telephone

Line

Modem

Remote
Modem

Modem

This diagram shows a single

BERT Tester testing a telephone

line and a pair of modems. The

remote modem is in loopback.

This application shows a pair of

BERT Testers testing a telephone

line and a pair of modems. If you

have one tester at each end, it’s

easier to pinpoint whether an

error is occurring on the transmit

or receive side of the link.

Async Mode: Bit Errors, Character Error, Total Test Seconds, Errored Second, Characters Received
Sync Mode: Bit Errors, Bit Error Rate, Total Test Seconds, Errored Seconds, Severely Errored Seconds, Degraded Minutes, Available,

Unavailable, Transmit Frequency, Receive Frequency, Clear To Send Delay, Bits Received

T1 Mode: Bit Errors, Bit Error Rate, Total Test Seconds, Errored Seconds, Severely Errored Seconds, Degraded Minutes, Available,

Unavailable, Transmit Frequency, Receive Frequency, RX Level, Frame Errors, CRC Errors, Bipolar Violations

E1 Mode: Bit Errors, Bit Error Rate, Total Test Seconds, Errored Seconds, Severely Errored Seconds, Degraded Minutes, Available,

Unavailable, Transmit Frequency, Receive Frequency

Displays

No matter what mode you
choose, the BERT Tester is
extremely easy to configure and
use. You can program it using
buttons on its front panel or
through the async console port.

The front panel features a
two-line LCD display, plus 16 LEDs
that illuminate when powered
on and show your selected mode,
test, and operating parameters.
All operations can be performed
using only ten buttons!

Select parameters by simply
scrolling through the values
already stored in the device.
The tester is pre-programmed
with a default configuration for all
five operating modes. But you can
easily change the preset configur­ation. Set up the tester so it
powers on in a different mode, for
example. The device’s nonvolatile
memory will retain the configura­tion even after power is removed
from the unit.

The tester‘s console port, a
6-position modular connector,
supports VT100™ terminals, PCs
in terminal emulation mode, and
dial-in modems. With the
exception of two control keys, all
necessary key commands appear
at the bottom of each console
screen. And each mode has its
own menu from which you can
monitor line activity and generate
loopbacks.

The BERT Tester draws its
power from a wallmount or inline
power supply, or from eight
rechargeable Nickel Metal
Hydride (NiMH) batteries. You
don‘t even have to wait for the
batteries to run down before
recharging them. It also has a
built-in recharger.