Specification

POST PORT IMPEDANCE: Zr=600 Ω

Modem impedance: 30 kHz to 4.4M Hz   100 Ω

Insertion loss: @1020 Hz   <0.3dB  

                 200 Hz<f<3.4 kHzwith 1000Hz center   <± 1 dB  

Return loss: 300 Hz< f< 500 Hz    >=14 dB 

              500 Hz< f< 2000 Hz   >=18 dB

              2000 Hz< f< 3400 Hz  >=14 dB

LCL       : 50 Hz< f< 600 Hz       > =40dB

             600 Hz< f< 3400 Hz     >=46dB

                     3400 Hz< f< 30K Hz     >=40dB

              30K Hz< f< 1104KHz  >=45dB

              1104K Hz< f< 4.4MHz   >30dB

Attenuation: 30 kHz<f<4.4M kHz    >55dB

Delay distortion: 500 Hz<f<2800Hz      <150u sec               

DC resistance:                           <25 Ω

Isolation resistance, branch-branch: 100 VDC; term = ∞ Ω    >5MΩ