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td4900 tester for merging units



dl/t 860 一致性测试、精确度测试、采样值输出接口性能测试

时钟同步测试 ( 对时误差、守时误差、对时信号异常情况等 )、网络环境影响性测试等


model td4900, an apparatus for testing merging units in laboratory or field environment. it supports various types of signal input such as traditional analog signals, analog small signals and digital signals of meeting various iec protocols.

the following tests are include: conformance test of meeting dl/t 860, accuracy test, performance test of sampled output interface, clock synchronization (error of time giving, error of time keeping and abnormal signal of time giving) and network influence test.

large lcd touch screen, more intuitive of value display and easier operation. combine with the proprietary software and computer, support semi-automatic or full-automatic test, data management and report export.

electrical specifications

analog output


output characteristics

output range: 10 mv to 6 v

 resolution: 0.001 % of range

 accuracy[1] of ratio difference for single signal: 300 + 200

 accuracy of angle difference for single signal: ±2 ‘

 ac power: the stability is 0.01 %/min, the accuracy in 1 year is ±0.05 % of full scale.

 power factor: the range is -1.00000…0.00000…+1.00000, the accuracy is ±0.05 %.

 display: 6 digits

frequency, phase, harmonic and symmetry output


analog input measurement


clock synchronization

 supported mode: code irig-b of fiber or rj45 ethernet interface, pps io mode of fiber or electrical level and clock output mode of abnormal timing.

 interfaces: fiber or rj45 ethernet interface and rs-232 interface.

general specifications

 line power: 220 v ±22 v, 50 hz ±2 hz

 operating environment: 0 °c to +40 °c, 20 % to 80 % r·h, non-condensing

 storage environment: -20 °c to +70 °c, <80 % r·h, non-condensing

 dimensions (w × h × d): 445 mm × 210 mm × 375 mm

 weight: 8 kg

 communication: rs-232 interface

selection guide


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