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销售利达 LDC-825 频率计

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产品参数

选件 是否计量 发货周期 保修时间 成色
1-4周 12- 8成新
所在地 机身号 状态 资料下载
深圳市 完好
更新日期:2021-12-03
联系电话:0755-86016691

* 产品描述

产品描述:

领先的频率计数器为各种实验室、通信和工作台应用提供准确、可靠的频率和周期测量,LSI 和 MSI 技术可提供符合当今严格要求的经济高效的仪器。


大型荧光显示器使这些仪器特别适合生产测试和其他需要大而明亮的读数的应用。

所有四个 unlt 都安装在屏蔽良好的金属外壳中,这实际上是实验室消除了由附近射频引起的错误领域。频率范围 I GHz 20 mV 灵敏度

除了频率读数外,还可以进行周期测量。通常,当测试信号频率非常低并且需要 0.1 Hz 或更高的分辨率时,可以预期直接频率读数的采样率为 10 秒。周期功能可用于减少采样时间并提高测量精度,同时显着提高分辨率。在周期模式下,测量一个周期的持续时间,在门控时间上取平均值,例如,16.09 毫秒的读数可以使用关系 f = lit 转换为 62.15 Hz。在执行高分辨率频率调整时,该周期特别有用,因为计数器读数允许持续观察频率的任何变化。

解析度:
计数器分辨率取决于频率范围、选通时间和显示屏中的位数。下面的图表比较了四个 Leader 实验室计数器的分辨率。

LDC-825 1 GWz 计数器:
LDC-825 具有所有 Leader 计数器中最宽的频率范围,10 Hz 至 1 GHz。它还具有最高的时基精度 (& 0.03 pprn),使其成为满足关键高频要求的理想计数器。两个输入阻抗,1 Mfl(10 Hz 至 80 MHz)和 50 R(50 MHz 至 1 GHz)可用于精确匹配被测设备。 

详细信息

Product Description:

Leader Frequency Counters provide accurate, reliable frequency and period measurements for a wide variety of laboratory, communications and bench applications  LSI and MSI bchnology results in cost-effective instrumentation for today's stringent requirements.


Large, fluorescent displays make these instruments particularly wellsuited to production testing and other applications where a large, bright readout is essential. 

All four unlts are housed in wellshielded metal cases which virtually Laboratory eliminates errors caused by nearby R.F. fields. Frequency Ranges I GHz 20 mV Sensitivity 

In addition to frequency readout, period measurements can also be made. Normally, a sampling rate of ten seconds can be expected for direct frequency readouts when the test signal frequency is very low and resolution to 0.1 Hz or greater is required. The period function can be used to reduce sampling time and to increase the accuracy of the measurement while increasing the resolution significantly. In the period mode, the time duration of one period is measured, averaged over the gate time, A reading of 16.09 milliseconds, for instance, can be converted to 62.15 Hz using the relationship f = lit. The period made is particularly useful when performing high resolution frequency adjustments because the counter readout permits constant observation of any change in frequency. 

Resolution :
Counter resolution is dependent upon frequency range, gate time and the number of digits in the display. The charts below compare the resolution of the four Leader laboratory counters. 

LDC-825 1 GWz Counter :

The LDC-825 has the widest frequency range of any Leader counter, 10 Hz to 1 GHz. It also has the highest time base accuracy (& 0.03 pprn), making it the ideal counter for critical, high-frequency requirements. Two input rmpedances, 1 Mfl(10 Hz to 80 MHz) and 50 R (50 MHz to I GHz) are available for precise matching to the device under test. 

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