CHAPTER 7 SPECIFICATIONS
UNIVERGE NEAX 2000 IPS General Description Page 167
Issue 5
Transmission Characteristics (For TDM Circuits)
DESCRIPTION SPECIFICATIONS
PCM Coding System A-law/U-law
Insertion Loss 0.15 dB at 1KHz
Return Loss
20 dB or more (300 to 3,400Hz) against
600 ohms
Longitudinal Balance 59 dB or more (300 to 3,400Hz)
Attenuation/Frequency Distortion -0.2 dB to +0.7 dB (300 to 3,400Hz)
Group Delay Distortion 0 to 0.3msec. (500 to 2,800 Hz)
Total Distortion
25 dB (Input signal:-45 dBm0)/40 dB
(input signal:0 dBm0)
Idle Channel Noise
-67 dBmop or less (psophometric noise)
-50 dBm0 or less (single frequency noise)
Impulsive Noise 0 counts at -35 dBm
Cross Talk Attenuation 90 dB or more
Inter-modulation Products -40 dB or more
Spurious In-Band Signals -49 dBm0 or less
Signal Attenuation
Attenuation rate: 12 dB per octave or
more at 3.4 kHz above
Attenuation level: -40 dBm or less at 3.4
kHz and above -70 dBm or less at 50 kHz
and above
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