Black Box 32144, Manual

Page: 54 / 195

140
MODEM 32144
7.5 How to Select and Activate Tests
7.5.1 F
RONT
-P
ANEL
C
ONTROL
Tests are accessed and activated in
the same way options are selected:
by using the LCD and front-panel
pushbuttons (as explained in
Chapter 3 ). To find the LCD screen
for a specific test, refer to the LCD
flow chart (DIAGNOSTIC AND
CONTROL FUNCTIONS)
included with this manual. Once
you have accessed the screen for a
specific test, press pushbutton 1 to
begin the test (select ON). A test
status screen will then be
automatically displayed. To
deactivate a test, press the ENT
pushbutton and then pushbutton
3. (The ENT button cannot be
used to exit the text screen until
the test has been deactivated.)
NOTE
For valid test results, error
correction must be disabled
before diagnostic tests are
run. To disable error
correction, set the V.42
Mode option to OFF.
7.5.2 R
UNNING
T
ESTS IN
H
AYES
M
ODE
In Hayes emulation mode only,
most of the diagnostic tests
available on the modem can be
activated via the DTE keyboard by
using the &T commands listed in
Section 5.4 . The duration of a test
can be set by assigning a value to
register S18. For example, AT
S18=30 sets the test time to 30
seconds. The command &TO
terminates a test. For further
information, see Section 5.4 .
7.5.3 R
EMOTE
T
EST
C
ONTROL
You can configure the modem to
ignore or accept requests from
remote modems to initiate tests on
your modem. To access the remote
test control option, select TEST
from SETUP screen 4. Then select
RMT from the TEST OPTIONS
screen. From the REMOTE TEST
screen, select ENABLE to allow
remote test initiation or DISABLE
to refuse remote test requests.
7.6 Diagnostic Monitoring: Status
Screens
To obtain additional information
about the status of the
communications system, observe
the status screen described in the
following sections. To view these
screens, push the ENT button until
the EIA status screen appears. Use
the right arrow pushbutton to
advance to other status screens.
7.6.1 EIA S
TATUS
S
CREEN
The EIA status screen indicates the
operational status of the modem as
well as the condition of certain EIA
RS-232 leads. The abbreviations
that may appear are identified
below; however, typically, only a few
of these abbreviations will be
displayed during actual operation.