1756-TC15品牌
- 供应商
- 厦门卡库电气有限公司
- 认证
- 报价
- ¥99.00元每个
- 品牌
- AB
- 型号
- 1756-TC15
- 联系电话
- 0592-5709823
- 手机号
- 18030229052
- 销售
- 严小姐
- 所在地
- 厦门市湖里区安岭路966-968号汇金湖里大厦815号之一
- 更新时间
- 2015-11-06 10:09
1756-tc15产品说明:
1756-tc15
厦门卡库电气有限公司
联系人:严小姐
手机:
电话:0592-5709823
传真:0592-5709828
q q :1093230189
地址;厦门湖里区枋湖西一里22号1302室
litespan系统中的isdn信道在制造过程中需要做各种各样的测试,其中重要的是比特误码率(ber)测试。根据在其它应用中已有的经验,对于我们的任务,选择labview是合理的。在测试中,一段伪随机码从系统的一端发送出去,经过环路,回到起点进行分析。数据经过线路模拟器,模拟器模拟产生线路本身,功率线路噪声(60hz)损伤,功率线路噪声谐波等等。isdn信道单元应当在预先设定的“本地环路”上按照标准运行,本地环路是指电话与电话公司中心机房相连的双绞线链路。我们用一个带有gpib接口和比特误码率(bert)测试器的线路模拟器进行测试,以确保板卡的性能高于标准。阿尔卡特美国公司litespan系统和motorolaevk(isdn评估板卡)用的是rs-232系列可控设备。 数据流 fireberd 6000abert测试仪产生的比特流输入motorolaevk,evk经过d-a转换后将信号变成脉冲调幅(pam)信号,脉冲调幅信号可以在数字信号线(dsl)和双绞线上传送。我们在labview上完成所有从建立、控制、分析到数据记录等工作。线路模拟器的gpib驱动程序,evk的系列驱动程序和litespan都是阿尔卡特美国公司定制编写的驱动程序。labview是满足我们所有应用需求的理想开发环境。 [align=center]
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