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LJD-B type dielectric constant and dielectric loss tester
一、概述：
First, an overview:
LJD-B型介电常数及介质损耗测试仪是我公司研制生产的产品，自该产品实现销售后，我公司工程师就一直持续不断对产品改进升级；特别是在软件上不断地加以完善，改进了早期产品存在的不足之处，提高了测试精度，并增加新的功能。但近期我公司发现，一些没有研发能力的不良公司，盗版了我公司早期产品的软件，仿制假冒我公司的产品进行销售，给不了解情况的客户将带来损失。因为这些产品的软件存在不足之处，（如在主电容调节至80pf左右时，电容指示值会出现跳变，出现180pf左右的指示值；在介质损耗测试时，当材料的损耗较大时，介质损耗值会出现错误。）但又无法得到升级完善，产品没有新增的功能。因此请广大用户注意识别。
LJD-B dielectric electric constant and dielectric loss tester is my company exclusive development and production of products, from the realization of the product sales, company engineers have been continuing to continuous product improvement and upgrade, especially in the software constantly perfected and improved the deficiencies existed in the early, to improve the accuracy of the test, and added new features. But recently we found that some no R & D capability of bad company, pirated software in my company's early products, imitation fake my company's products sales and to understand the customer will bring losses. Because of these products software shortcomings, as in the main capacitor is adjusted to about 80pf, capacitance indication value will appear to jump, value indicating 180pf about; in the dielectric loss test, when the errors will occur in the material loss is large, the dielectric loss value. But can not be upgraded and improved, the product has no new features. So please pay attention to the majority of users.
二、技术参数：
Two, technical parameters:
信号源频率范围： DDS数字合成 10KHz-70MHz
Signal source frequency range: DDS digital synthesis 10KHz-70MHz
Q测量范围： 1-1000自动/手动量程
Q measurement range: 1-1000 automatic / manual range
信号源频率覆盖比： 6000:1
Signal source frequency coverage ratio: 6000:1
Q分辨率： 4位有效数,分辨率0.1
Q resolution: 4 bit effective number, resolution 0.1
信号源频率精度： 3×10-5 ±1个字,6位有效数
Signal source frequency accuracy: 3 * 10-5 + 1 words, 6 effective number
Q测量工作误差： <5%
Q measurement error: <5%
电感测量范围： 15nH-8.4H,4位有效数,分辨率0.1nH
Inductance measurement range: 15nH-8.4H, 4 effective number, resolution 0.1nH
调谐电容： 主电容30-500PF
Tuning capacitor: main capacitor 30-500PF
电感测量误差： <5%
Inductance measurement error: <5%
调谐电容误差和分辨率：±1.5P或<1%
Tuning capacitor error and resolution: + 1.5P or <1%
标准测量频点： 全波段任意频率下均可测试
Standard measurement frequency point: the whole band can be tested at any frequency
Q合格预置范围： 5-1000声光提示
Q qualified preset range: 5-1000 sound and light tips
谐振点搜索： 自动扫描
Resonance point search: automatic scanning
Q量程切换： 自动/手动
Q range switch: automatic / manual
谐振指针： LCD显示
Resonant pointer: LCD display
LCD显示参数： F,L,C,Q,波段等
LCD display parameters: F, L, C, Q, band, etc.
三、夹具工作特性
Three, the characteristics of the fixture
1.平板电容器：
1 flat plate capacitor:
极片尺寸：Φ50mm/Φ38mm 可选
Sheet size: Phi 50mm/ Phi 38mm optional
极片间距可调范围：≥15mm
Pole piece spacing adjustable range: 15mm
2. 夹具插头间距：25mm±0.01mm
2 fixture plug spacing: 25mm + 0.01mm
3. 夹具损耗正切值≤4×10－4 （1MHz）
3 fixture loss tangent is less than 4 * 10-4 (1MHz)
4．测微杆分辨率：0.001mm
4 micrometer bar resolution: 0.001mm
四、配置：
Four, configuration:
主机一台
Host a
电感九支
Inductance nine
夹具一套
Fixture set
随机文件一套
Random file