NTP100 – Rev 2.2.0 Oct-12
10
© Masterclock
®
, Inc.
Configuration
The NTP100 maintains an internal configuration that defines a number of parameters regarding the unit’s operation.
These configuration settings include the assigned [static or DHCP] IP address and network settings, assigned device
name, operational mode, broadcast parameters, brightness level, assigned stratum levels, telnet access, RTC usage
validity during primary reference outages, and password, along with the year, date, & time stored [and incrementing] in
the real time clock. The internal configuration is maintained even when power is off.
This information, except for the time/date stored in the RTC, may be reset to the factory default state.
Battery Backed RTC and Configuration
The NTP100 maintains its internal configuration and settings in battery backed memory located on the RTC chip. The
battery supplies power to the TCXO 32kHz oscillator and RTC when the unit is powered off. This allows the internal
configuration to be maintained and the time and date to increment, when power is off. Under normal operating condition, the
memory devices maintaining the RTC data and configuration settings is powered by the external DC power supply and does
not rely on the battery for data retention.
The battery type is a ‘replaceable’ lithium coin cell battery (models - OSC and –GPS) or a maintenance free rechargeable
Manganese Lithium battery (model NTP100-TC).
Note: If the NTP100 does not retain its configuration, or its Date/Time settings (this may be indicated by the front panel time
display counting up from ‘zero’) the battery will likely need replacement. The battery size differs between models. See the
“Specifications” section for details on the recommended battery replacement.
Reset Factory-Default Configuration
In some situations (such as a lost password or removal of confidential information prior to sending the unit in for
maintenance or repair service) it may be necessary to return the NTP100 to its factory default configuration. A recessed
button labeled “RESET”, located on the back of the NTP100 unit, performs this function. To reset configuration to
factory default
1) Remove power from the NTP100
2) Depress and hold the “RESET” button, continue to depress the “RESET” button
3) Re-apply power to NTP100 and continue holding the “RESET” button down for five seconds.
Default Password
The factory-default password for an NTP100 is: public
NTP100- Rear View
Common to all models-
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