Section 150-319-251
Revision 01
Page 8
TABLE 3. SYSTEM PARAMETER OPTION SETTINGS
Parameter
Option
Description
PWRF (Power Feed)
DIS
Disables powering to the ERU over the HDSL pairs.
ENA*
Enables powering to the ERU over the HDSL pairs.
ESAL (Errored Seconds Alarm
Threshold)
17
Activates MNRALM (on pin H) after 17 Errored Seconds (17 HDSL CRC
errors on either HDSL loop or a total of 17 BPVs and FERR) occur
within 24 hours.
170
Activates MNRALM (on pin H) when 170 Errored Seconds occur within
24 hours.
NONE*
Prevents generation of a minor alarm due to excessive Errored
Seconds.
LBTO (Loopback Timeout)
NONE
Disables automatic time-out cancellation of all loopbacks.
20
Sets automatic cancellation of all loopbacks to 20 minutes after
initiation.
60*
Sets automatic cancellation of all loopbacks to 60 minutes after
initiation.
120
Sets automatic cancellation of all loopbacks to 120 minutes after
initiation.
ALM (Minor Alarm)
DIS*
Retires an existing minor alarm on pin H by disabling its signal, and
prevents another minor alarm from occurring.
ENA
Enables pin H to be grounded when a minor alarm condition occurs.
CONF (Confirm)
YES
Confirms that all 4 operating modes are to be updated to their current
choices.
NO*
Prevents the most recently selected operating mode choices from being
updated. They remain as they were prior to entry of system option
settings procedure.
MARG (Margin Alarm
Threshold)
0 to 15
4*
Displays the Margin Alarm Threshold (in dB), set using the RS-232
Maintenance port. If the margin on either loop drops below this value, a
minor alarm is reported (MAL1 or MAL2). The factory Default is 4.
* Indicates the ELU-319 factory settings.
9. MAINTENANCE PORT OPERATION
9.01
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 3. 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.
9.02
The menus and informational screens
displayed by the terminal are shown in
Figures 7 through 23. From the Main Menu
(Figure 7), 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.
9.03
Two user settings, Circuit ID, and Margin
Alarm Threshold, must be set from the
display terminal.
9.04
To set the Circuit ID, select H from the Main
Menu to display “Enter circuit ID # (24
characters max)”. Enter the circuit ID, press
ENTER, then press C to confirm the entry. If you
enter more than 24 characters, the terminal beeps
and accepts only the first 24 characters. The circuit
ID appears in all screens, and you cannot reset it to
a default as described in Paragraph 7.05.
