T220-B PCIe 授时卡

Learn about our PCI timing solutions

T220-B PCIe 授时卡是一款面向计算机系统的基础型高精度授时板卡，可直接插入标准PCIe插槽，通过B码信号或卫星接收机获取时间基准，为主机提供时间信息同步及定时中断能力，实现系统软件时间与板卡时间的一致性。产品支持B-DC时间信息输入、1PPS脉冲输出及B-DC输出，GPS/BD接收机可按需选配，并支持主备参考源切换，可自动或手动选择有效时间源；当外部参考中断时，内部频率源可进入保持状态，持续提供稳定时间基准。通过PCIe接口，应用程序可调用API实现周期中断与定时闹钟功能。

适用于科研计量、通信、电力、交通及工业自动化等应用场景

Important Features

Supports two-way B code (DC) time information input
Reference time source master/slave switching, automatic or manual switching
Onboard frequency source optional (temperature compensated crystal oscillator, constant temperature crystal oscillator)
Multiple timing functions
Support Windows and Linux systems, providing rich software interfaces
API provides multiple soft timing interrupts and time matching interrupts

Important Features

Test Item	Specifications/Parameters	explain
Time reference source	Number of way: 2-way
	Standard: IRIG-B DC	GJB2991-2008 Standard/IEEE
	System accuracy: 100ns (TCXO: 100us)
	Connection method: RJ45
Output	1PPS pulse: 1-way	Connection method: RJ45
Timed interval interrupt	Pulse: 4 channels independent settings	Period: 100us – 10000s
	Accuracy: 1us
Software Features	Timer alarm interrupt	4-channel independent settings
	Delayed timer interrupt	4-channel independent settings
	Stepping: 1us
	Supported operating systems: Windows 64/32bit, Linux	Provides standard soft interrupt API library functions and test routines
Local clock	Type: OCXO
	Steady-state accuracy: ≤2E-8 (factory calibration), can be manually calibrated or tamed
	Short-term stability: ≤5E-11/1s
	Aging: ≤5E-10/day
interface	Number of way: 2-way, B-DC (RS422)	Impedance: 100Ω
Interface - PCIe	Width: X1, compatible with X4/X8/X16	Speed: compatible with GEN2 (5Gbps), GEN1 (2.5Gbps), GEN3 (8Gbps)
Physical and environmental parameters	Power supply: PCIe slot power supply
	Size: PCIex1 half-height or full-height card specifications
	Operating temperature: -20°C ~ +80°C
	Storage temperature: -40℃ ~ +85℃
	Humidity: 95% non-condensing

System Block Diagram

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