Masterclock NTP100 -SERIES - Manually Setting Time and Date

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NTP100 – Rev 2.2.0 Oct-12

, Inc.

Set Time/Date

The Set Time menu item lets you manually set the time and date for the NTP100. The function may be most useful for

demonstration, in lab situations, environments where an external signal is not available. The time for the NTP100 can

either be set to the time of the PC or a manual custom time can be entered.

Model –OSC and –OSC-HS

NTP100-OSC and NTP100-OSC-HS must receive an input time set manually during the initial installation.

Both versions will revert to the battery backed RTC and TCXO and maintain <165mS day drift during power

down (outages) and/or storage. The high stability version will have a much improved drift rate of <19mS/day,

but the overall accuracy of both versions relies heavily on the initial time setting input.

To set the time manually it is suggested to use a preset time source for best overall initial accuracy. While

either method may be used, the “UTC Time from PC Clock” is recommended over the “Custom” manual entry

method.

[Note: for the purpose of maintaining its internal clock, theNTP100 time server always assumes the time

entered is UTC and saves this information as the internal UTC time.]

For best results using the “UTC Time from PC Clock” method , first set the time on the PC that WinDiscovery

is installed on, using an NTP/SNTP client pointed to either an Internet NTP time server or another reliable

NTP100. Immediately follow the time setting of the PC, by selecting the “UTC Time from PC Clock” option,

and press the “Set Now” button.

Model –GPS and –GPS-HS

When the NTP100-GPS achieves a GPS satellite fix, the continuous time/date obtained from GPS will

automatically overwrite any that is manually established. Therefore, practical ongoing use of this feature

requires the NTP100 to be disconnected from its GPS antenna. The GPS models of the NTP100 use the same

manually entry methods of Set/Time as the OSC (oscillator) versions, described above.

Set Time / Date screen – custom [use UTC time]

Set Time / Date screen – UTC Time From PC Clock