锁定时间

该锁相环的锁定时间低于15us，功耗小于10mW。

PLL lock time is below 15us , power dissipation is below 10mw .

两组设置都为负荷量10ml，持续量为2ml/h，PCA为0.5ml/次，锁定时间为15分钟。

Two groups all arrange the load amount is 10ml , the continuous amount is 2ml / h PCA is 0.5ml / time , the lock time is fifteen minutes .

最后，通过对误码性能和系统联合锁定时间进行仿真，验证了数字解调器性能，并在FPGA中实现了载波恢复模块。

Finally , the performances of this digital demodulator are tested through the simulation of BER and the system joint lock-time , and a carrier recovery module is implemented in FPGA .

PCA组用药为50μg／ml的芬太尼，单次剂量25μg，锁定时间6分，不给病人负荷剂量。

The 50 μ g / ml fentanyl was used in group PCA with 25 μ g / ml per single dose at 6 minutes interval and no loading dose was administered .

基于Chartered0.25μMCMOS工艺库的Spectre仿真结果，锁相环的锁定时间降低到原来的50%。

Based on a 0.25 μ m CMOS technology , simulation results show that the locking time of the PLL reduces about 50 % .

通过同时改变电荷泵电流和滤波器的结构使锁相环的带宽发生变化，这样在不影响噪声性能（phasejitter）的前提下，锁定时间显著减小。

Adaptive-Bandwidth is achieved by the adaptive control on the current of charge-pump and the loop filter architecture , resulting in significantly decrease the acquisition time without affecting its noise performance ( phase jitter ) .

h-1，锁定时间5min；

And the lockout time was 5 min.

为了帮助实现互斥锁分配和锁定时间的最小化，JVM管理一个全局锁缓存和一个单线程锁缓存，其中每个缓存包含了未分配的pthreadmutex。

To help minimize mutex allocation and locking time , the JVM manages a global lock cache and a per-thread lock cache where each cache contains unallocated pthread_mutexes .

D组：0.15%罗哌卡因+曲马多（3mg/ml）。PCEA参数设置：负荷剂量6ml，单次剂量3ml，锁定时间30分钟，持续剂量2ml/h。

PCEA parameters were a loading dose of 6ml , a bolus dose of 3ml , a lockout interval of 30 min and continuous infusion of 2ml / h.

特别地，为了减少PLL的锁定时间，在偏置电路中引入限频电路；为了给PLL提供全摆幅的是信号，在VCO的输出电路后设计了整形电路。

In order to reduce the lock time of PLL , the frequency limiting circuit is introduced to this VCO . In order to provide a full swing of frequency source , a shaping circuit is introduced in this VCO .

PCEA参数设置：负荷剂量4mL，单次剂量3mL，锁定时间50min，持续剂量1.5mL/h。

The PCEA parameters of loading dose 4 mL , single 3 mL , locking the time in 50 minutes and continuous infusion with 1.5 mL / hour were setup .

参数设置：负荷剂量2ml，持续输注剂量1ml，单次给药剂量1ml，锁定时间5min，每4小时最大限量30ml。

PCA setting : Loading dose of 2 ml , continuous dose of 1 ml / h , bolus dose of 1 ml / h , lockout time 5 mins , and 4 hours limit of 30 ml were set .

硬膜外组PCA药物配方为舒芬太尼80μg+氟哌利多5mg+罗哌卡因250mg用生理盐水稀释至200ml，负荷量4ml，背景剂量2ml／h，自控给药量3ml／次，锁定时间30min。

In PCEA group , the PCA solution consisted of sufentanil 80 μ g , droperidol 5 mg , ropivacaine 250 mg diluted to 200 ml with normal saline , loading dose 4 ml , background infusion 2 ml / h , blous 3 ml , lockout time 30 min.

测试结果显示，电路的峰-峰抖动小于输出信号周期（Tout）的0.5%，锁相环锁定时间小于参考时钟预分频后信号周期（Tpre）的150倍。

The peak-to-peak jitter of the circuit is less than 0.5 % of the output period , T_ ( out ), and the locking time is less than 150 times of the reference clock period after prescaler , T_ ( pre ) .

具有快速锁定时间的新型低相噪频率合成技术

New Frequency Synthesis Technology with Fast Lock Time and Low Phase Noise

三阶电荷泵锁相环锁定时间的研究

Locking Time Study of 3 ~ ( rd ) Order Charge Pump PLL

在单个数字式锁相环的基础上，建立了锁相环嵌套环路模型并用数值方法对锁定时间和相位噪声特性进行了仿真。

I establish the model of the nested-loop PLL based on modern charge-pump PLL .

星载嵌套锁相环锁定时间的分析

Tracking Time in a Nested-loop PLL for Pico-satellite

锁相环的主要性能指标是锁定时间短、同步误差小，适用频带适当。

Main performance index of the phase-locked loop lock is short time , small synchronous error , suitable frequency .

这两种模型的思想均为使本地时钟的相位同步于码元相位，存在着锁定时间慢等缺点。

The ideology of all these two models is let the phase of the local clock to be synchronous with the symbol .

然后对嵌套环路模型进行了锁定时间和相位噪声等特性的仿真，并进一步用实验验证了仿真结果。

The lock time and phase noise characteristics are simulated , and the results are similar with the test results of real circuit .

获取用户多次未能正确回答密码提示问题后用户帐户的锁定时间长度。

Get the length of time for which a user account is locked out after the user makes too many bad password-answer attempts .

通过行为级模型验证，说明该公式可以快速准确地得到三阶电荷泵锁相环的锁定时间，并且很直观地反映出锁定时间与环路参数之间的关系。

The locking-time is shown to depend on parameters of the loop in the formula . Its validity is verified by the behavior model .

尽管这减少了激光测速相机有效范围，相机的功能仍然是行之有效的由于其锁定时间短。

Though this cuts down on the laser speed camera 's effective range , the camera is still effective due to its short lock-on time .

比同档次设计具有更小的芯片面积、更低的功耗和更短的锁定时间，达到了较高的性能指标。

With the comparison of the equivalent design , the proposed HFCG has lower power consumption , faster lock-in time and a smaller die area .

小数分频器作为频率综合器的重要组成部分，对频率综合器的输出精度、相位噪声、锁定时间及参考杂散等性能有重要影响。

As a critical part of the frequency synthesizer , the fractional divider seriously affects the output frequency accuracy , phase noise , locking time and reference spur .

首先从频率综合器系统层面分析小数分频器对频率综合器输出精度、相位噪声、锁定时间等性能的影响。

First , the influence of the fractional-N divider on the frequency accuracy , phase noise and locking time of a frequency synthesizer is analyzed on the system level .

测试了解调曲线及系统锁定时间，证明闭环系统能够实现对谐振频率的跟踪。

The demodulation curve and the locking time of the system are tested , and it is proved that the closed-loop system can realize the tracking for the resonance frequency .

随着集成电路工作频率范围的不断扩大，系统对时钟的频率范围以及锁定时间提出了更高的要求，锁相环设计面临更加严峻的挑战。

With the increase of the range of operating frequency , wider frequency range and shorter locking time are asked , thus we are facing great challenge in designing PLL .

因为自偏置锁相环的特点，使得所设计的锁相环的带宽与输入频率的比值可以保持在一个相对稳定的范围，对锁定时间以及输入频率跟踪抖动得到改善。

Because of the basic feature of self-bias PLL , the ratio of loop bandwidth and reference clock can be kept to be a certain range so that both of the lock time and input tracking jitter can be improved .