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Modular design with multiple reference paths built in for high-availability.
6 expansion slots for customization and expansion.
Industry-first GPS integrity checking with Timewall™
Unique optical crosslink architecture for either Master-Slave hierarchical setups or Master-Master crosschecking and failover
LCD display and keypad for basic status and configuration – secure web browser for detailed setup.

Manufactured By: Brandywine Communications

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Brandywine’s M212 Master Clock System represents the next generation of modular timing systems. Built as a commercial derivative of the highly successful ruggedized Modular Master Clock, the M212 provides assured timing capabilities using Brandywine’s Timewall™ technology.

At the center of the M212 system is Brandywine’s powerful Master Clock Module (MCM). The MCM may be synchronized by a variety of reference sources and uses the selected reference to steer an embedded oscillator to provide stable and accurate time and frequency for the M212. Multiple references can be prioritized with automatic failover.

Available input reference selections include GNSS (both commercial GNSS and combination SAASM/M-Code GPS receivers are supported), IRIG-B, and Have Quick/1PPS. In addition, an MCM may be synchronized to up to 2 other M212 chassis using a fiber optic crosslink, this provides additional resiliency for the M212 time and frequency references.

The base oscillator in the M212 is a high quality Temperature Compensated Crystal oscillator, but the M212 optionally can be ordered with other reference oscillator choices, including Rubidium, Chip Scale Atomic Clock (CSAC) and Ovenized Oscillator (OCXO).

The output signals for the M212 are generated by up to 6 Output Signal Modules (OSM), and are ideal for custom solutions or future expansion. Available modules include NTP, low-phase-noise frequency, time code modules such as IRIG A, B, G, H, and NASA 36, BCD, PPS, PPM, Have Quick, serial data (RS232/422) as well as optical crosslink.

The M212 status and control is via front panel display for basic configuration and status, a secure web browser, and via SNMPv3. Network protocols also fully support privacy and authentication.

Model Number	Product Type	Description	Oscillator Type	Power Supply	Form Factor	Power Type	Output Format	Input Format
M212	M212 Base Unit	M212 1U Base Unit		90-265 VAC	1U	AC		Power
M212-24VDC	M212 Base Unit	M212 1U Base Unit - 24 VDC Power Option		24 VDC	1U	DC		Power
M212-48VDC	M212 Base Unit	M212 1U Base Unit - 48 VDC Power Option		48 VDC	1U	DC		Power
M212-SAASM	M212 Base Unit	M212 1U Base Unit (SAASM & M-Code Version)		90-265 VAC	1U	AC		Power
M212-MCM	Master Clock Module	M212 Master Clock Module	TCXO		1x M212 Module		Have Quick, IRIG B DCLS + IEEE1344 CF, 10 MHz	GPS, GNSS, Have Quick + 1PPS, IRIG B, IRIG B + 1PPS
M212-OCXO	Master Clock Module	M212 OCXO Oscillator Option	OCXO		1x M212 Module		Have Quick, IRIG B DCLS + IEEE1344 CF, 10 MHz	GPS, GNSS, Have Quick + 1PPS, IRIG B, IRIG B + 1PPS
M212-RB-J	Master Clock Module	M212 Rubidium Oscillator Option (J Designator)	Rubidium		1x M212 Module		Have Quick, IRIG B DCLS + IEEE1344 CF, 10 MHz	GPS, GNSS, Have Quick + 1PPS, IRIG B, IRIG B + 1PPS
M212-CSAC-J	Master Clock Module	M212 CSAC Oscillator Option (J Designator)	CSAC		1x M212 Module		Have Quick, IRIG B DCLS + IEEE1344 CF, 10 MHz	GPS, GNSS, Have Quick + 1PPS, IRIG B, IRIG B + 1PPS
M212-HP-RB	Master Clock Module	M212 High Performance Rubidium Oscillator Option	Rubidium		1x M212 Module		Have Quick, IRIG B DCLS + IEEE1344 CF, 10 MHz	GPS, GNSS, Have Quick + 1PPS, IRIG B, IRIG B + 1PPS
M212-MCM-SAASM	Master Clock Module	M212 Master Clock Module (SAASM & M-Code Version)	TCXO		1x M212 Module		Have Quick, IRIG B DCLS + IEEE1344 CF, 10 MHz	GPS, GPS (SAASM/M-Code), Have Quick + 1PPS, IRIG B, IRIG B + 1PPS
M212-RB-TTL	Master Clock Module	M212 Rubidium Oscillator Option - TTL Interface	Rubidium		1x M212 Module		Have Quick, IRIG B DCLS + IEEE1344 CF, 10 MHz	GPS, GNSS, Have Quick + 1PPS, IRIG B, IRIG B + 1PPS
M212-UNIV-2X-TRI	Output Signal Module	M212 2X BNC/TRIAD Universal Output Signal Module			1x M212 Module		1PPS, 1PPM, Have Quick, IRIG A, IRIG B, IRIG E, IRIG G, IRIG H, XR3, 2137
M212-UNIV-4X-TRI	Output Signal Module	M212 4X TRIAD Universal Output Signal Module			1x M212 Module		1PPS, 1PPM, Have Quick, IRIG A, IRIG B, IRIG E, IRIG G, IRIG H, XR3, 2137
M212-UNIV-4X-BNC	Output Signal Module	M212 4X BNC, Universal Output Signal Module			1x M212 Module		1PPS, 1PPM, Have Quick, IRIG A, IRIG B, IRIG E, IRIG G, IRIG H, XR3, 2137
M212-NTP	Output Signal Module	M212 NTP Server Output Signal Module			1x M212 Module		NTP
M212-RS232-RS422	Output Signal Module	M212 8-PORT RS232/RS422 Output Signal Module			1x M212 Module		RS232, RS422
M212-PTP	Output Signal Module	M212 PTP Grandmaster Output Signal Module			1x M212 Module		PTP
M212-E1T1	Output Signal Module	M212 E1/T1 Output Signal Module			1x M212 Module		E1, T1
M212-1PPS-J	Output Signal Module	M212 1PPS Output Signal Module (J Designator)			1x M212 Module		1PPS
M212-5M-J	Output Signal Module	M212 5MHz Output Signal Module (J Designator)			1x M212 Module		5 MHz
M212-10M-J	Output Signal Module	M212 10MHz Output Signal Module (J Designator)			1x M212 Module		10 MHz
M212-BAL-BCD-J	Output Signal Module	M212 Balanced Binary Coded Decimal Time Code Output (J Designator)			1x M212 Module		BCD
M212-TC-J	Output Signal Module	M212 Modulated Time Code Output (J Designator)			1x M212 Module		Have Quick, IRIG A, IRIG B, IRIG E, IRIG G, IRIG H, XR3, 2137
M212-HQ-TC-J	Output Signal Module	M212 Have Quick Time Code Output Signal Module (J Designator)			1x M212 Module		Have Quick
M212-EP-PTP	Output Signal Module	M212 Extended Performance PTP Grandmaster Output Signal Module			1x M212 Module		PTP
M212-OPT	Output Signal Module	M212 Optical Crosslink Module			1x M212 Module		Fiber Optic	Fiber Optic
M212-RS422-J	Output Signal Module	M212 RS422 Output Signal Module (J Designator)			1x M212 Module		RS422
M212-LPN10	Output Signal Module	M212 10MHz Low Phase Noise Output Signal Module			1x M212 Module		10 MHz
M212-LPN5	Output Signal Module	M212 5 MHz Low Phase Noise Output Signal Module			1x M212 Module		5 MHz

Brandywine M212 Datsheet.pdf

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Brandywine - M212 1U Next Generation Master Clock System