Spectrum Instruments TM-4 Intelligent Reference Time & Frequency System

Spectrum Instruments TM-4 Intelligent Reference Time & Frequency System

Condition:
* New surplus stock, in sealed OEM packaging. As pictured.

Additional Notes:
* High spectral-purity 10 MHz sine wave output.
* MTIE Stratum-1 compliance with frequency accuracy of 1x10-12 (long-term).
* Standard one pulse-per-second (1 PPS) output with separate Spectrum ASCII Serial Time Message.
* Sawtooth-corrected timing accuracy of ±5 ns.
* User-selectable PPS source and output mode
* GPS-disciplined ovenized oscillator with very low phase noise.
* Unit-to-Unit Phase Coherency optimization.
* State-of-the-art 12 channel GPS technology.
* Spectrum\'s exclusive FastStart technology offers high accuracy within just minutes of start-up.
* Intelligent Holdover function provides near-Ruofferium stability during GPS unavailability.
* Static and dynamic timing modes.
* Auto Survey position averaging mode.
* Timing information derived from all satellites tracked with only one satellite required in Static Timing Mode.
* RS-232 control interface for control by a host computer.
* Alternative oscillator choices available to meet unique application requirements, including low-cost VCXO, low-power OCXO, and ìRuofferium Rivalî DOCXO.
* Two multiplexer outputs. Mux output 1 supplies one of six selectable TTL outputs slaved to the primary frequency reference: 1, 10, and 100 kHz, and 1, 5, and 10 MHz. In addition, Mux1 can also supply a TTL level PPS output or optionally be configured to supply baseband IRIG time code. Mux output 2 can supply 10 MHz or PPS at TTL levels, mirror Mux1ís output, or may optionally supply baseband IRIG or a custom
output.
* NMEA 0183-format message capability (subset).
* Optional very wide range frequency synthesizer output slaved to primary reference. Consult factory for
specific application.
* Optional second sine wave output, either identical to or independent of primary frequency, up to 200 MHz.
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* Optional auxiliary frequency output such as 1.544 MHz or 2.048 MHz slaved to the primary frequency reference. Virtually any common frequency may be chosen.
* Optional synthesized timing pulse output coherent with 10 MHz output and synchronized to 1 PPS. This may be virtually any frequency up to 100 kHz, including frequencies such as 216 2/3 Hz.
* Event Time-Tag (ETT) time stamp with 100 ns resolution.
* Programmed Output Pulse (POP) with selectable pulsewidth and polarity. One-Shot and Repeat Modes.
* Optional Type 11 Network Time Protocol (NTP) output.
* Optional IRIG B (or other time code) serial time code output (TTL and modulated). IRIG G and other IRIG formats also available.
* WindowsÆ-based Control/Display software.
* Front panel indicators for power status, reference ready, and alarm status.
* 9 to 35 VDC operation with rechargeable lithium battery back-up for GPS data.

Spectrum Instruments
TM-4
20020-001

California residents: we are providing the following warning for products shipped to California:
WARNING: This product contains, or may contain, chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
(This item was manufactured prior to August 31st, 2018)

Additional Terms:
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* All sales shipped in Florida are subject to 7.0% sales tax.
* Unless there is a \"Buy it Now\" option, we do not end sales early.

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