4 of 4
5/17/2007
#11093
724-746-5500
blackbox.com
Here are just a few tests that you can perform with the
Comm Tool 1000:
• Do complex sync polled devices’ testing without having to
attach them to a PC, mini, or mainframe host. The Comm
Tool 1000 can simulate such hosts’ presence.
• You can use the Comm Tool 1000 to identify voltage-level
problems in your marginal RS-232 devices. The unit
functions as a pulse-level voltmeter, identifying the voltage
at which your device operates. (RS-232 devices usually
operate at voltages ranging from +3 to +12 volts.)
• Other tests you can perform with the Comm Tool 1000
include:
a) Verifying whether devices are DTE or DCE;
b) Finding out an unidentified data stream’s data format
and data rate;
c) Testing the serial and parallel channels’ character-per-
second throughput and how closely the measured
throughput approaches the ideal;
d) Measuring the mark/ space bias distortion induced by
transmission channels;
e) Timing events (measuring the delay between signal
transitions).
• The Comm Tool 1000 supports a variety of communication
protocols, including asynchronous, “basic” synchronous,
and SDLC (Synchronous Data Link Control), an IBM host-to-
terminal scheme. It also supports the Centronics parallel
interface and (with the proper adapter cables) the
Dataproducts
®
parallel interface as well.
• Besides those shown in the illustrations above, applications
that the unit would function well in include:
a) Monitoring SNA traffic to and from an IBM 3274 or
similar computer;
b) Polling/multidrop modem testing;
c) Verifying the RS-232 output and control leads on an
attached RS-232 device.
Technically Speaking
Recognize any of these situations?
• You wait more than 30 minutes to get through
to a vendor’s tech support.
• The so-called “tech” can’t help you or gives you
the wrong answer.
• You don’t have a purchase order number and the
tech refuses to help you.
• It’s 9 p. m. and you need help, but your vendor’s
tech support line is closed.
According to a survey by Data Communications
magazine, 90% of network managers surveyed say
that getting the technical support they need is extremely
important when choosing a vendor. But even though
network managers pay anywhere from 10 to 20% of their
overall purchase price for a basic service and support
contract, the technical support and service they receive falls
far short of their expectations—and certainly isn’t worth
what they paid.
At Black Box, we guarantee the best value and the
best support. You can even consult our Technical Support
Experts before you buy if you need help selecting just
the right component for your application.
Don’t waste time and money— call Black Box today.
Why Buy From Black Box? Exceptional Value.
Exceptional Tech Support. Period.
