Brandywine - XMC SyncClock32 Advanced Switch Mezzanine Card Timing Module
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IRIG A & B, NASA 36 and 1 PPS inputs standard
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HaveQuick sync option
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Propagation delay compensation
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Zero latency time reads
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Match Time output
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IRIG B time code output
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External Event time tags
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On-board GPS receiver option
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User programmable heartbeat rate
The XMC-SyncClock32 from Brandywine Communications is an advanced switched Mezzanine Card (XMC) module. Precision time is provided to the host computer with zero latency. The on-board microprocessor automatically synchronizes the clock to reference signal inputs. The reference signal inputs handled by the XMC in its standard configuration are IRIG’s A and B, NASA 36 and 1 PPS. Alternatively, the clock in the XMC can be set using commands from host computer and free run using its on-board oscillator as the time base.
When synchronizing to time codes or 1 PPS the micro-processor constantly measures the time error between the on-board clock and the reference input code and adjusts the error measurement for propagation delay. When the disciplined TCXO option is selected the residual error is used in an adap-tive gain loop to adjust the frequency of the 10 MHz oscillator for minimum error. Before being used as the time reference, the input code reference is checked (to code carrier resolution) for consistency with itself. If the incoming code is missing or corrupted by noise the on-board clock is updated by the 10 MHz oscillator. When the input code is again useable the cor-rection loop is smoothly closed.
58 bits of BCD time are available to the host computer using two zero latency time reads. The time message contains units of microseconds through units of years. A status word is avail-able using an additional read.
The time-of-occurrence of external events may be captured (time-tagged) by using the Event Time input. When the event input is sensed the current time is saved in a buffer for later interrogation by the host. The resolution of the time tag is 100 nanoseconds.
The Match Time feature may be used to automatically initiate or terminate an external process. The resolution of the Match Time comparison is one microsecond. The Match Time out-put is asserted when the time of the internal clock matches that of the user input start time. The Match Time output may be terminated by a user command or when the previously set stop time is encountered.
One user programmable heartbeat rate is provided. The heartbeat pulse rate provides heartbeat timing to the host computer and is also available on the multi-pin connector.
The GPS synchronization option offers worldwide time transfer capability to the XMC-SyncClock32. Very precise synchronization, automatic leap year and leap second correction, plus accurate position information are additional benefits provided by the GPS option.
General Input Specifications
| Input Signals | IRIG A & B, NASA 36 |
| Input Amplitude | .25 to 10 Vpp |
| Input Impedance | >10k Ω |
| Ratio | 2:1 to 4:1 |
| Frequency Error | 100 PPM maximum |
| Code Sync Accuracy | One microsecond |
| 1PPS Input | RS-422 or TTL, positive edge |
| 1PPS Sync Accuracy | 300 nanoseconds |
| External Event Resolution | 100 nanoseconds–units year |
| Minimum Event Spacing | None |
General Output Specifications
| IRIG B DC Shift | TTL |
| Match Pulse Resolution |
TTL level at Start–Stop time Microseconds–eight millisecond |
| Heartbeat Rate | Interrupt, flag, TTL, negative going |
| Clock Divisor | 2–65,535 |
| Clock Input | 1 MPPS |
| Default output | 1 kPPS |
| BDC Time | Microseconds–unit year on demand, zero latency 58 bits in two 32 bit words |
| Status Word | 8 bits |
| Status Indicator LED's | Flashes Coded Patterns |
| Interrupts | External Event, RAM FIFO, Heartbeat, Match Time |
| Flags | Dual Port RAM data ready, FIFO data ready, In sync, Heartbeat, Match Time, External Event |
| Connectors | SMB, high density IEEE–1284 |
| Mean Time Between Failures | 141,000 hours per Mil-217-F, Notice 2, 25° C, ground benign |
Physical
| Dimensions | 74mm X 1437.5mm single CMC |
| Type | PCIe endpoint |
| Power Consumption |
+5 Vdc: ±5%,150 mA maximum +12 Vdc: ±5%, 60 mA maximum -12 Vdc: ±5%, 25 mA maximum |
Environmental
| Temperature | |
| Operating | 0°C to +70°C |
| Non-Operating | -40°C to +85°C |
| Humidity | To 95% without condensation |
Options
| GPS Sync Input (External) | C/A code |
| GPS Sync Accuracy | 100 nanoseconds |
| Position Accuracy | 25 meters SEP |
| Tracking Satellites | Twelve parallel channels |
| Antenna | L1, 25' cable |
| Antenna Options | Hi-gain: L1, mast mount, 100' cable |
| Input Code Isolation | Transformer coupling |
| Input Codes | IRIG G, XR3, 2137, IRIG E, 109-60 |
| Output Codes (DSLS) | IRIG A, NASA 36, IRIG G |
| External Event Inputs | 8x TTL, Positive or Negative Edge |
| Have Quick Input | Per ICD–GPS–060 |
| Have Quick Output | Per ICD–GPS–060 |
| Binary Time Words | Replaces BCD |
| Oscillator Upgrades | Disciplined TCXO, 1 PPM |
| 1 PPS 10 Vdc Input | Sync input, +10 Vdc, 50 Ohms |
Document
More Product Information
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3/4 length board (1/2 size available w/o GPS input)
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Optional Have Quick synchronization input
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IRIG’s A and B and NASA 36 time code inputs
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1PPS sync input
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IRIG B output option
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1PPS and time code inputs are redundant
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Single-slot including GPS option
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Zero latency time reads
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External Event input (optional eight or sixteen inputs)
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Match Time output
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Programmable Heartbeat rate
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5 MHz or 10 MHz Outputs Available
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Reference Frequency Input Option
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Auto Changeover with Ref. Input Option
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Low Phase Noise Outputs
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Twenty four Outputs
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Front Panel Status Indicators
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Fault Discrete Inputs
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Compact 1U, 19” rack mount
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Modular design with multiple reference paths built in for high-availability.
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6 expansion slots for customization and expansion.
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Industry-first GPS integrity checking with Timewall™
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Unique optical crosslink architecture for either Master-Slave hierarchical setups or Master-Master crosschecking and failover
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LCD display and keypad for basic status and configuration – secure web browser for detailed setup.
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Dual inputs with automatic switchover
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10 individually buffered outputs of 3 signal outputs
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Have Quick, BCD and 1PPS outputs compliant with ICD-GPS-060
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Universal GPS , IRIG A, B, E, G, NASA36, and HaveQuick inputs
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12 channel GPS receiver
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16 programmable outputs for time codes and pulse rates
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Output codes include NTP, IRIG A, B, E, G, H, NASA36, HaveQuick, 1PPS
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Electrical time code input/output
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Dual Independent Ethernet ports with integrated web server control
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High Stability Oven Controlled Oscillator Standard
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9-Digit Time Display
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Redundant Hot Swappable Power Supplies
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1U 19” rack mount
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Network Enabled Time Code Distribution Amplifier
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Dual Time Code Inputs with Auto Failover
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Support for Analog Time Codes between 100Hz and 100KHz
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Programmable per channel amplitude
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1U 19” rack mount
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Redundant Hot Swappable Power Supplies
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Allan deviation σ(τ) = 2.7×10-11 T-1/2 for long life version and σ(τ) = 8.5×10-12 T-1/2 for high performance version
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Front or Rear access connectors
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3U high (133mm / 5.24”) — less than 200mm depth, compatible with ETSI and 19” standards
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Accuracy better than ±1×10-12 / ±5×10-13 for high performance version
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10 MHz low noise direct output
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Programmable 1 / 5 / 10 MHz TTL output
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10 years warranty on cesium tube (3 years for high performance version)
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Redundant DC power supply inputs
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Remote control and monitoring via RS232 (fully manageable locally and remotely using SyncView Plus management system.
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IRIG A & B/IEEE-1344, and NASA 36 inputs standard
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HaveQuick sync option
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Propagation delay compensation
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Zero latency time reads
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Match Time output (P4)
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IRIG B time code output option
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External Event time tag (P4)
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Three user programmable rates
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Ruggedization option
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Multi-pin Front Panel P4 I/O option
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Versatile GPS Master Clock with IRIG-B reference input
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Dual 10/100BaseT Network interface with Network Time Protocol (NTP)
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Time Code Outputs, IRIG B, IRIG E, Have Quick
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High Stability Ovenized oscillator is standard
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Single string or dual redundant configuration
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Ruggedized for Shipboard Usage
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Dual Hot-Swappable Power Supplies
Brandywine Communications
Brandywine Communications Inc. offers superior products to the time and frequency marketplace. Our mission is to provide the finest equipment coupled with excellent before and after sale service. Our staff of dedicated professionals, based in Tustin, CA, represents over 100 years of collective experience in design, manufacturing and sales of precision time and frequency products. Many of our products are made here in the United States, which allows for quick turnarounds and custom design.
Products from Brandywine Communications range from components such as Oven Controlled Oscillators to complete timing systems like the top of the line High Performance Timing System (HPTS).
Several state-of-the-art time and frequency systems are available from Brandywine. The system product line includes single and dual-redundant models, GPS synchronization and a wide range of oscillator choices: TCXO, OCXO, high-stability OCXO and Rubidium types. GPS choices include both C/A code and SAASM models.
Brandywine also is the premier North American distributor of Oscilloquartz, a subsidiary of ADVA Optical Networking. Oscilloquartz is a premier synchronization supplier for telecommunications for wireline and wireless infrastructures throughout the world. This partnership creates a powerhouse of timing and telecommunications that expand Brandywine's services to their customers in the US and Canada.
We supply several major market segments including: Aerospace, US and Municipal governments, telecommunications, US military, power utilities, financial institutions, test ranges, automotive industry, healthcare and schools.
Brandywine Communications, Inc. is certified as a Small Business Organization with the United States Small Business Administration (SBA’s 8(a) Certification Program) and is registered on the System for Award Management (SAM.gov) website which makes us eligible for all awards or grants specified under this provision.
Contact Details
Brandywine Communications Inc. - Ultra-Precision Time & Frequency
2921 Daimler Street, Santa Ana, CA 92705, USA
Phone: +1-714-755-1050
Email: support@brandywinecomm.com
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