The TN1648B is an SPE component that is used for maintenance on a DEFINITY R configuration. A processor in the TN1648B circuit pack runs control routines that connect to maintenance software. The TN1648B circuit pack has an alarm panel with five-LED and a toggle switch to manually inhibit automatic emergency transfer of PPN analog lines.
- PPN alarm monitors and outputs including auxiliary alarms for auxiliary equipment and environmental monitoring for over-temperature conditions
- Power supply sense and control for the carriers
- Emergency transfer control for catastrophic failure. The circuit consists of a three-position toggle switch. The switch can be moved into the manual on position, manual off position, or automatic position.
- Non volatile memory that contains the time-of-day clock, the telephone number for the Initialization and Administration System (INADS), login password, and product identification
- Alarm panel information with major, minor, and warning LEDs, an ACKnowledge LED, and an emergency transfer LED
These items have been refurbished. Refurbished items have been cleaned, tested, and confirmed to be fully functional. Grade A - Refurbished items show wear from consistent use and can have some scratches and may have some yellowing or discoloration.
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