2　缩略语

ACR-F(Attenuation to Crosstalk Ratio at the Far-end)　　　衰减远端串音比

ACR-N(Attenuation to Crosstalk Ratio at the Near-end)　　　衰减近端串音比

d.c.(Direct Current Loop Resistance)　　　直流环路电阻

ELTCTL(Equal Level TCTL)　　　两端等效横向转换损耗

FEXT［Far End Crosstalk Attenuation(loss)］　　　远端串音

IL(Insertion Loss)　　　插入损耗

NEXT［Near End Crosstalk Attenuation(loss)］　　　近端串音

OLT(Optical Line Terminal)　　　光线路终端

OLTS(Optical Loss Test Set)　　　光损耗测试

OTDR(Optical Time Domain Reflectometer)　　　光时域反射

PSNEXT［Power Sum Near End Crosstalk Attenuation(loss)］　　　近端串音功率和

PSAACR-F(Power Sum Attenuation to Alien Crosstalk Ratio at the Far-end)　　　外部远端串音比功率和

PS AACR-Favg(Average Power Sum Attenuation to Alien Crosstalk Ratio at the Far-end)　　　外部远端串音平均值比功率和

PS ACR-F(Power Sum Attenuation to Crosstalk Ratio at the Far-end)　　　衰减远端串音比功率和

PS ACR-N(Power Sum Attenuation to Crosstalk Ratio at the Near-end)　　　衰减近端串音比功率和

PSANEXT［Power Sum Alien Near-End Crosstalk(loss)］　　　外部近端串音功率和

PSANEXTavg［Average Power Sum Alien Near-End Crosstalk (loss)］　　　外部近端串音平均值功率和

PSFEXT(Power Sum Far End Crosstalk)　　　远端串音功率和

RL(Return Loss)　　　回波损耗

TCL(Transverse Conversion Loss)　　　横向转换损耗

TCTL(Transverse Conversion Transfer Loss)　　　横向转换转移损耗