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DRL2A OPERATING MODE

DRL2A Stand-By Mode

With the Line Card installed, apply power to the unit. This
message will be displayed on the LCD screen for 1 second:

MAY 23, 97 V 1.81

The following messages are sent to the printer and computer:

Printer:

L0x???????Dx LCardReset

Computer: 0000 A Dx

A hexadecimal digit from 1 to E representing the number of
the Line Card will be sent for each “x” shown above.

After these start-up transmissions, the Line Card enters the
Stand-By Mode and monitors the telephone line and the
CPM2. Depending on the system’s status, the following
conditions will be indicated:
• Line fault
• Shutdown of Line Card communication with CPM2
• CPM2 error; display alarm message
• Keep last alarm message
• System in stand-by

1.1 Line Fault

The DRL2A verifies the telephone line voltage every 10
seconds. The “Line Fault” light will come ON after two
successive line verifications indicate irregular telephone line
voltage. This message will be displayed:

-L01-Digital Rec

-L01-Digital Rec
<<-Line Fault->>

<<-Line Fault->>

If the Line Check option is enabled, the following information
will be transmitted to the printer and computer:

Printer:

L01???????20 Line Fault

Computer:

0000 A 20

If the Line Check option is disabled, the DRL2A will not
send the report to the printer or computer. Refer to “DRL2A
Programmable Features” for information on enabling the
Line Check option.

When the line condition returns to normal, the “Line Fault”
light will be shut OFF.

If the Line Check option is enabled and the telephone line
returns to normal, the following information will be transmitted
to the printer and computer:
Printer:

L01???????30 Line Restr

Computer:

0000 R 30

1.2 Shutdown of Line Card Communication with CPM2

A Line Card may be temporarily removed from CPM2 polling
for testing and maintenance purposes; refer to “CPM2 Utility
Modes” for information on shutting down a line card. While
in the shutdown mode, the Line Card will retain up to 256
alarm messages in its event buffer. When the Line Card is
shut down, the “Trouble” light will come ON and this message
will be displayed:

-L01-Digital Rec

-L01-Digital Rec
LnCard Shutdown!

LnCard Shutdown!

1.3 CPM2 Error; Display Alarm Messages

If the DRL2A cannot detect CPM2 polling and there are no
alarm events in the event buffer, this message will be
displayed:

-L01-Digital Rec

-L01-Digital Rec
<<-CPM Error!->>

<<-CPM Error!->>

If alarm messages cannot be sent to the CPM2 because of
the error, the DRL2A will display the oldest message which
has not been manually acknowledged. The “Alarm” light
will FLASH and the sounder will beep if the “Mute Buzzer”
Option is programmed as [00], [02] or [03].

When a CPM2 Error is present, each alarm must be manually
acknowledged. Press the [ACK/FUNCTION] button to
acknowledge the alarm and silence the Line Card sounder.
If several alarms have been received but cannot be sent to
the CPM2, they will have to be individually acknowledged;
when all alarms are acknowledged, the Line Card sounder
will be silenced.

Up to 256 alarm messages for the printer and computer will
be retained in the CPM2 event buffer. When the event buffer
is full, the oldest messages will be deleted as new events
are recorded.

When the CPM2 Error condition is corrected, the alarm
messages in the event buffer will be transmitted to the CPM2.

1.4 Keep Last Alarm Message

The DRL2A may be programmed to leave the last alarm
message on the display screen until a new message is
received. A typical alarm message is shown below:

L01-1234-312

L01-1234-312
Alarm

Alarm

F 2

• “L01” indicates Line Card 01

• “1234” is the account code

• In this example, a 4/3 communication format is used. “3”

indicates an alarm, while “12” is the zone number.

• “Alarm” indicates an alarm event.

• “F2” is the event’s location in the event buffer in

hexadecimal.

1.5 Stand-by Mode

When the Line Card is operating normally, this message
will be displayed:

L01-Digital Rec

L01-Digital Rec
*Unit in Standby

*Unit in Standby

Line Card Menu Mode

When the unit is not on line, pressing the [ACK/FUNCTION]
button will display the first Function Menu:

Dsp PRINTER alm

Dsp PRINTER alm
ACK:menu SEL:sel

ACK:menu SEL:sel

Press the [ACK] button to scroll through the menu items.
Press the [SELECT] button to select the function displayed
on the LCD screen. When a function is selected, press
[ACK] and [SELECT] together to exit from the Menu Mode.
The DRL2A will automatically exit from the Menu Mode if no
keys are pressed for 30 seconds. No changes can be
performed from this menu.

The following functions are available in the Line Card Menu
Mode:
• Display Printer Alarm Buffer
• Display Line Card Configuration
• Display Program Version
• Adjust LCD Contrast