PairGain 150-1236-54, Руководство пользователя

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Section 150-319-254
Revision 02
Page 8
5. OPTIONS
5.01 The operating mode of the ELU-319
depends on the settings of the following
system operating parameters:
•
PWRF—Power Feed (HDSL line power)
•
ESAL—Errored Seconds Alarm Threshold
•
LBTO—Loopback Timeout
•
ALM—Minor Alarm
•
MARG—Margin Alarm Threshold
5.02 Table 3 lists the ELU-319 system
parameters and their optional settings. The
ELU-319 stores the settings of the system parameters
in non-volatile RAM to prevent their loss in the event
that shelf power is lost or the ELU-319 is unplugged.
5.03 No DIP-switches or jumpers are required to
set the ELU-319 configuration. You can set
all the system parameter options with the front panel
pushbuttons (MODE and SEL) except the MARG
threshold. The latter can be set from the maintenance
terminal through the ELU-319 RS-232 interface.
5.04 To initiate the Option Set mode from the
ELU-319 front panel, press and hold the
MODE button for one second. The front panel
message alternates between the system parameter
and its current setting. Press the SEL button to step
through all possible values (in sequence) of the
parameter being displayed. Press MODE when the
desired setting is displayed. This selects the next
configurable parameter. When you have selected the
last parameter, the display displays “CONF/NO”. To
return to original settings, press the MODE button. To
accept the new settings, press the SEL button. This
displays “CONF/YES”, installs the changes, and
returns to normal display mode. If you do not press
either button within 30 seconds, the parameters return
to their original values, and the display returns to
normal mode.
5.05 To set all parameters to their default values,
press and hold the SEL button for six or more
seconds. The message “DFLT/NO” appears when
you release the button. Press SEL again to display
“DFLT/YES” and accept the default values. Press
MODE to cancel and return to the original values.
5.06 Press the MODE button for 3 or more
seconds to scroll through the ELU-319
software version number, List #, and all parameter
option settings.
Figure 4. ELU-319 DB-9 Pin-Outs. A standard RS-232
(DB-9) connector on the front panel provides access to the
menu interface feature via a dumb terminal.
5.07 To configure the ELU-319 from the
Maintenance port, connect an ASCII display
terminal to the RS-232 Maintenance port with a cable
configured as shown in Figure 4. The maintenance
port is configured as Data Communications
Equipment (DCE) with 8 data bits, 1 stop bit and no
parity. Striking the SPACE bar several times invokes
the “autobaud” function over a range of 1200 to 9600
bps.
5.08 The menus and informational screens
displayed by the terminal are shown in
Figures 6 through 13 for non-doubler applications.
Figures 15 through 31 show the screens for doubler
applications. From the Main Menu (Figure 6 or 15),
select C–SYSTEM SETTINGS. Entering the letter in
parenthesis of the parameter you want to change
scrolls the parameter through its options. When you
have made the new settings, enter C to confirm.
5.09 Two user settings, Circuit ID, and Margin
Alarm Threshold, must be set from the display
terminal.