Retired Products

Below is information on discontinued and obsolete models by support status. Links are provided for replacement models, product operating manuals and datasheets if available.

Contact tech support for troubleshooting assistance and repair services for products available with full or limited support.

Product Availability: 
End-of-life
Support Status: 
Limited Support

1204-12 PTP SecureSync Module

The precision time protocol module for the SecureSync platform, model 1204-12, is going end of life and will be replaced by the 1204-32 PTP module and other product combinations. The product discontinuance notice provides more information.
Product Availability: 
End-of-life
Support Status: 
Limited Support

1800 Series Auto Changeover Distribution Units

These timing and frequency distribution amps included the models 1866A/C/E supporting redundant clock systems and the 1876A/C for single clocks. The Epsilon Switch and Amplifier System, model SAS-E is a drop-in replacement.
Product Availability: 
End-of-life
Support Status: 
Limited Support

6688/6689 High Stability Frequency Standard

On December 23, 2016, an agreement was reached between Altaria Services and Spectracom Corporation for the rights to products marketed under the Pendulum brand.

Please visit the Pendulum Instruments website for current information about this product.

Product Availability: 
End-of-life
Support Status: 
No Longer Supported

8130 Frequency Standard

This frequency standard is a stand-alone source of user-selectable frequenices: 0.1, 1.0, 5.0, 10 MHz.
Product Availability: 
End-of-life
Support Status: 
Limited Support

8140 Frequency Distribution System

The 8140 distributes 10 MHz from a reference source over a trunk line to a system of taps.
Product Availability: 
End-of-life
Support Status: 
Limited Support

8140MT MultiTap

The MultiTap distributes frequency from a 10 MHz source.
Product Availability: 
End-of-life
Support Status: 
Limited Support

8140VT VersaTap

The VersaTap distributes a variety of timing and frequency signals from a variety of input signals.
Product Availability: 
End-of-life
Support Status: 
Limited Support

8143 Frequency Signal Selector & Amp

A redundant switch and frequency distribution amp. Succeeded by the Epsilon Switch and Amplifier System, model SAS-E.
Product Availability: 
End-of-life
Support Status: 
Limited Support

8144 Clock Selector/Distribution Amp

A redundant switch and timing signal distribution amp. Some signals are supported by the Epsilon Switch and Amplifier System, model SAS-E.
Product Availability: 
End-of-life
Support Status: 
Limited Support

8145 TimeGuard Monitor/Selector

A redundant switch and timing signal distribution amp. Some signals are supported by the Epsilon Switch and Amplifier System, model SAS-E.
Product Availability: 
End-of-life
Support Status: 
No Longer Supported

8150 Phase Comparator

A plug-in module for a Tektronix TM-500 or -5000 mainframe to compare the phase of 2 nearly identical frequencies.
Product Availability: 
End-of-life
Support Status: 
No Longer Supported

8160/8160A Frequency Standard

WWVB referenced frequency standard. Will no longer operate as intended due to the changes in the WWVB signal in 2012. Successor product is the SecureSync time and frequency reference system.
Product Availability: 
End-of-life
Support Status: 
No Longer Supported

8161 Frequency Standard

WWVB referenced frequency standard. Will no longer operate as intended due to the changes in the WWVB signal in 2012. Successor product is the SecureSync time and frequency reference system.
Product Availability: 
End-of-life
Support Status: 
No Longer Supported

8163 Frequency Receiver

WWVB referenced frequency receiver. Will no longer operate as intended due to the changes in the WWVB signal in 2012. Successor product is the SecureSync time and frequency reference system.
Product Availability: 
End-of-life
Support Status: 
No Longer Supported

8164 Frequency Standard

WWVB referenced frequency standard. Will no longer operate as intended due to the changes in the WWVB signal in 2012. Successor product is the SecureSync time and frequency reference system.
Product Availability: 
End-of-life
Support Status: 
No Longer Supported

8165 Ageless Oscillator

WWVB referenced master oscillator. Will no longer operate as intended due to the changes in the WWVB signal in 2012. Successor product is the SecureSync time and frequency reference system.
Product Availability: 
End-of-life
Support Status: 
No Longer Supported

8170 Master Clock

WWVB referenced master clock. Will no longer operate as intended due to the changes in the WWVB signal in 2012. Successor product is the SecureSync time and frequency reference system.
Product Availability: 
End-of-life
Support Status: 
No Longer Supported

8171/8171A Master Clock

WWVB referenced master clock. Will no longer operate as intended due to the changes in the WWVB signal in 2012. Successor product is the SecureSync time and frequency reference system.
Product Availability: 
End-of-life
Support Status: 
No Longer Supported

8172 Display clock

See the currently available time displays.
Product Availability: 
End-of-life
Support Status: 
No Longer Supported

8175 Display Clock

See the currently available time displays.

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Product Support Status Definitions

Full Support: Units with this classification can be returned for repair as necessary. Tech Support via phone and email is available. Replacement units may still be available for purchase from the factory. Contact us for more details.

Limited Support: Units with this classification may or may not be able to be repaired. Tech support via email and phone is limited. Units classified as Limited Support can still be returned for repair. Once the product is evaluated, we can determine if the unit can be repaired. If it cannot be repaired, we will recommend a “replacement model” if one exists. No additional software/firmware updates are planned/expected.

For example: The internal oscillators can no longer be obtained on some products. If the oscillator in the unit is bad, the unit will not be able to be repaired. We will recommend purchasing an alternative unit.

No Longer Supported: Units with this classification are not returnable for repair. Tech support is no longer available for these products. No additional software/firmware updates are planned/expected.