NEC ELECTRA ELITE IPK II - Connectors

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6 - 10 Installing ETUs (Circuit Cards)
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Document Revision 3 Electra Elite IPK II
4.1.4 Connectors
Before programming System Data, the battery must be installed in
CN6 to allow memory retention when a power failure or brownout
occurs. When a brownout or power failure occurs, and the battery
backup circuit is not activated, Time and Date, Terminal status (e.g.,
MIC), and SMDR Data are reset. System data is not lost due to the
battery backup circuit.
When a CPUII( )-U10 ETU is installed and the system or battery
backup fails for any reason, the clock/calendar must be set. The fully
charged battery retains memory for approximately three years.
Table 6-1 CPUII( )-U10 Default Switch Settings
SW1
Description
Momentary
Switch
Load
SW2 Description
Up Default/Normal State
Down System Reset
SW3-1 Description SW3-2 Description
On (Up) RS-232C
Monitor On
On (Up)
Not Used
Off RS-232C
Monitor Off
Off
Not Used