Spectrum Instruments Intelligent Reference TM-4 Timing Signal Generator read

Pulled from a working rack.

See pictures

This listing has power tested units that have only turned on the alarm led not power or ready leds.

These have not been system reset. Which is suggested if not able to reprogram for the area outside of Iowa.

Spectrum Instruments TM-4 Intelligent Reference module – a precision GPS-disciplined oscillator (GPSDO) providing ultra-stable 10 MHz sine wave output, 1 PPS timing pulse, and serial timecode. Perfect for RF labs, ham radio timebases, telecom sync, test benches, or vintage electronics restoration. This classic unit features ovenized crystal oscillator (OCXO) locked to GPS satellites for ±5 ns timing accuracy and 1x10^-12 long-term stability

Sold As-Is, for parts no returns as I do not program and cannot tell if buyer connected incorrectly.

Multiples available so the serial number picture is for reference, you will not receive that serial number.

Unit shipped without the system interface.

A copy of the software and manuals no longer available for download will be included.

Stickers covering labeled site name. Buyer can clean or cover.

Shipped two business days after payment

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