Zhone IMACS 8000 User Manual page 381

E&M Card
Relative Transhybrid Loss
Model E&M-2W-8P
Idle Channel Noise (rcv and xmt)
Interchannel Crosstalk
Total Distortion including Quantization (Signal to Distortion Ratio) Input Frequencies 1004-1020 Hz
Input Level
-30 to 0 dBm0
-40 dBm0
-45 dBm0
Absolute group delay
Group Delay Distortion vs. frequency
Longitudinal Balance
Variation of Gain with Input Level
Diagnostic Capabilities
Diagnostics
Standards Compatibility
Bell System
ITU-T
FCC Rules and Regulations
Voice Cards
Against 600 Ohms, in series with 2.16 µf termination.
Echo 34dB
Singing 20dB
< -65 dBm0p. Typically < -70 dBm0p or < 20 dBrnc0
Typical < -75 dBm0 using 7 adjacent channels being distributed with a
signal of 0.0 dBm0.
Rcv or Xmt
>35 dB
>20 dB
>25dB
< 600 microseconds
within boundaries of ITU-T Rec. G.712 Figure 2
>46 dB Typical > 50 dB
within boundaries of ITU-T Rec. G.713 Figure 7 (2 wire)
within boundaries of ITU-T Rec. G.712 Figure 7 (4 wire)
Typical gain variation is within + 0.25 dB from +3 to -50 dBm0
Analog loopback
Digital loopback
"Make Busy" signaling control
TR43801
Recommendations G.711, G.712 and G.714
Part 68, and Part 15 - Subpart J
E&M Card Specifications
Overall
>33.9 dB
>27.6 dB
>23 dB
11-21