Spectracom - Essential Ingenuity

Replacement Power Pack for Model 9288

Question

I need a new power supply for an NTP server Model 9288. How can I obtain a replacement?

Answer

The Spectracom NTP servers use an external 12vdc power pack for its input power. The front panel "Power" LED will illuminate as long as 5vdc is present, but it doesn’t indicate if the full 12vdc required for normal operation is present.  

If the input voltage from this power pack is low, the time server will be unable to operate, but the power light may still be lit.  A flashing power light likely indicates the 5vdc is right on the edge. To determine if the power pack is the reason for the failure symptom, using a voltmeter, we recommend that you measure the output voltage of the power pack.  Preferably, the power pack should be measured with it connected to the back of the NTP time server. The output voltage of the power pack should remain at about 12vdc whether or not it is connected to the back of the NTP time server.  A low voltage output indicates the power pack is bad and needs to be replaced. 

 
The Model 9200 series NTP time servers use a circular, barrel type DC connector that can’t be accessed when its plugged into the back of the unit. First measure the output of the power pack with it disconnected from the back of unit.  Using a DC meter, measure the DC voltage on this connector from center pin to the outer metal (polarity doesn’t matter).   If this voltage is less than about 11vdc, the power pack is failing with no load applied and therefore doesn’t need to be tested under load.  If the DC voltage is not about 11 vdc or higher disconnected from the unit, next measure the voltage under load,. To measure the voltage under load, using either sharp meter leads or a pin, simply pierce the insulation of the two center-core wires that are connected to the barrel connect (this is the DC side of the power pack).  Measure the DC voltage and verify at least 11vdc or so is still present. If the voltage is dropping below about 11vdc in either test, the power pack needs to be replaced.
 
The warranty period on the power pack is 2 years from the NTP server’s date of purchase.  If you find the output voltage of the power pack is less than about 12vdc and since the Model 9288 NTP servers have been discontinued for more than two years old, replacement power packs can be purchased through our Order Admin department.
 
To order replacement power packs, please contact our Order Entry department:
Contacts for purchasing replacement power packs, scheduling, questions on an order, credit terms, etc. include:

 
Emails for purchasing can also be sent to: orderentry@spectracom.orolia.com.
 
The Spectracom Part Number for the replacement 12vdc pack power pack is 1122-0000-0701.

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