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onclick="readmode($('thread_subject').innerHTML, 135091);" class="show">阅读模式</a> </div> </div> </div><div class="pct"><style type="text/css">.pcb{margin-right:0}</style><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_135091"> <P><B><FONT size=3><FONT size=5>数字锁相放大器 丰富经验和顶尖技术的结晶 高品位DSP<a href="http://opticaltest.oecr.com" target="_blank" class="relatedlink">测量</a>仪</FONT> </FONT></B> <p> <P>●采用数字处理方式，稳定性好 相位稳定度0.01°/℃、增益稳定度±100ppm/℃ <p> <p> <P>●从1mHz开始可以测量 可以进行红外线分光和温度响应等低速信号分析 <p> <p> <P>●高速且平顺的响应 最小时间常数10μs、装有同步滤波器、对设定切换也快速应答 <p> <p> <P>●用简单、可靠的操作进行复杂的测量 装有自动功能、明白易懂的键盘配置、大型<a href="http://display.oecr.com" target="_blank" class="relatedlink">显示</a>器、模拟电表、修正度盘等 <p> <p> <P>●有2种型号 丰富多彩的多功能数字锁相放大器 LI 5640，以及保留基本性能、专注于简洁功能的经济型 LI 5630</P> <p> <P><FONT color=#000000><FONT size=5><B>频率特性分析仪</B> 能够高精度测量振幅（增益）和相位</FONT></FONT></P><FONT color=#000000> <UL type=disc> <LI class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 10pt; mso-line-height-rule: exactly; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l0 level1 lfo2; tab-stops: list 36.0pt">测定频率 <B>FRA 5096</B>：0.1mHz～15MHz <B>FRA 5095</B>：0.1mHz～2.2MHz <p></LI> <LI class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 10pt; mso-line-height-rule: exactly; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l0 level1 lfo2; tab-stops: list 36.0pt">增益精度 ±0.05dB、相位精度 ±0.3° <p></LI> <LI class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 10pt; mso-line-height-rule: exactly; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l0 level1 lfo2; tab-stops: list 36.0pt">动态范围 大于140dB <p></LI> <LI class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 10pt; mso-line-height-rule: exactly; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l0 level1 lfo2; tab-stops: list 36.0pt">绝缘电压250Vrms <p></LI> <LI class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 10pt; mso-line-height-rule: exactly; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l0 level1 lfo2; tab-stops: list 36.0pt">可输出伯德（Bode）线图、尼奎斯特（Nyquist）线图、尼科尔斯（Nichols）线图、科尔-科尔（Cole-Cole）图表 <p></LI> <LI class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 10pt; mso-line-height-rule: exactly; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l0 level1 lfo2; tab-stops: list 36.0pt">装备自动积分·振幅压缩·运算功能等 <p></LI> <LI class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 10pt; mso-line-height-rule: exactly; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l0 level1 lfo2; tab-stops: list 36.0pt">装有彩色液晶显示器和软盘驱动器（FDD） <p></LI> <LI class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 10pt; mso-line-height-rule: exactly; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l0 level1 lfo2; tab-stops: list 36.0pt">内置打印机（标准装备） 附有文件读取<a href="http://opticaldesign.oecr.com" target="_blank" class="relatedlink">软件</a></LI></UL> <p> <P><B><FONT size=5>信号发生器</FONT></B><B> <P><FONT size=5></FONT></P></B> <P><FONT size=5></FONT></P> <P><B><FONT size=5>功能丰富、性能优越，有七种型号可供选用</FONT></B></P> <P>●采用DDS（数字直接合成）方式，能产生出高精确度、高分辨率、宽频带的信号 <p> <p> <P>WF1943A/WF1944A/WF1945A/WF1946A和WF1965/WF1966分别能输出0.01μHz～15MHz和0.01μHz～50MHz的信号。采用全合成方式，在整个频带上的设定分辨率为0.01μHz，频率精确度为±5ppm。此外，WF 1956还覆盖了100MHz的高频区域。 <p> <p> <P>●具有本级别设备最高的垂直分辨率，能输出高精度波形。 WF1945A和WF1946A具有16位的波形分辨能力，实现了高品位的波形和振幅精确度。 <p> <p> <P>●5种标准波形+任意波形 能输出正弦波、方波（占空比50%）、方波（占空比可变）、三角波、锯齿波、逆锯齿波、包含噪声的波形、以及任意波形。任意波形可以通过操控板操作/经由GPIB、USB接口来制作，最多可以存储12种波形。 <p> <p> <P>●扫描功能与调制功能 频率、相位、振幅、偏置、占空比（仅限于方波）的各个参数，可以用连续/单发/选通扫描/线性/对数（对数限于频率、振幅）等进行组合后作扫描。另外，还可以进行AM、FM(FSK)、相位(PSK)、PWM、偏置各种调制。 <p> <p> <P>●2通道动作（WF1944A/WF 1946A/WF1966/WF 1956） 能输出2通道独立/2相（可变相位）/频率比一定/频率差一定/差分（对于同一频率，振幅·偏置为相反波形）。 <p> <p> <P>●作为脉冲信号发生器…… 通过组合上升/下降时间可变（WF1965/WF1966）、占空比可变、触发振荡、触发延迟等功能，可以作为脉冲信号发生器使用。 除了可以设定脉冲的幅度/周期之外，还可以分别独立设定高/低电平的值。 <p> <p> <p> <P>本公司是日本NF回路设计的代理,负责销售NF公司全线<a href="http://b.oecr.com/sell" target="_blank" class="relatedlink">产品</a>,如对产品感兴趣,欢迎新老朋友来电查询.</P> <P><FONT face=宋体 size=3>制造商: 日本株式会社NF回路设计 代理公司：北京恒信业科技有限公司</FONT> <P><FONT face=宋体 size=3></FONT><FONT face=宋体 size=3></FONT> </P> <P><FONT face=宋体 size=3>北京市海淀区半壁街南路八号汇景阁公寓610室 邮编：100089 hrf770113@sina.com</FONT></P> <P><FONT face=宋体 size=3>电话：010-68435895 68450391 68450757 68732127转801 传真 804 手机：13001961312 韩瑞峰</FONT></P> <P> <p> <p></FONT></td></tr></table> </div> <div id="comment_135091" class="cm"> </div> <div id="post_rate_div_135091"></div> </div> </div> </td></tr> <tr><td class="plc plm"> <div id="p_btn" class="mtw mbm hm cl"> <a href="http://club.oecr.com/home.php?mod=spacecp&ac=favorite&type=thread&id=18345&formhash=2a6b52bf" id="k_favorite" onclick="showWindow(this.id, this.href, 'get', 0);" onmouseover="this.title = $('favoritenumber').innerHTML + ' 人收藏'" title="收藏本帖"><i><img src="static/image/common/fav.gif" alt="收藏" />收藏<span id="favoritenumber" style="display:none">0</span></i></a> <a class="followp" 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