Zhone Technologies IMACS-200 manual 3 E&M port Specifications, Input Level

A.4.3 E&M port Specifications

E&M ports 4-Wire

Physical Interface 4-Wire

Number of Ports	4
Connectors	4 RJ45 telco connector

Transmission Performance

Performance	Exceeds requirements of ITU-T G.712 (4-wire))
Signaling
Signaling Types	Switch selectable - all four ports are the same
	Normal (toward user) and Trunk/Tandem (toward CO)
Signal Modes	Software selectable per port
	Transmit Only (to), Type I, II, IV and V.
VF Transmission Characteristics
Nominal Transmit TLP	Software selectable
	-16.5 dB to +7.5 dB in steps of 0.1 dB
Nominal Receive TLP	Software selectable
	-16.3 dB to +7.5 dB in steps of 0.1 dB
Termination Impedance	with 2.16 ∝ f capacitor in series 600 Ohms
PCM Encoding	Software selectable
	∝ -law
	A-law

Attenuation Versus Frequency as per AT&T TR43801 - Relative to 1 kHz with 0 dBm0 input

Frequency	Transmit (A to D)	Receive (D to A)
200 Hz	-0.25 to +3.0 dB	-0.25 to +2.0 dB
300 to 3000 Hz	-0.25 to +0.5 dB	-0.25 to +0.5 dB
3200 Hz	0.25 to +0.75 dB	-0.25 to +0.75 dB
3400 Hz	-0.25 to +1.5 dB	-0.25 to +1.5 dB

Return Loss	Against 600 Ohms, in series with 2.6 ∝ f with additional 25 Ohms
	resistor between the channel unit and the return loss measurement set.
4-wire	1kHz 28dB min.
	300 to 3000 Hz 23dB min.
4W Return Loss (at 1 kHz)	>20dB Typ > 27dB
Relative Transhybrid Loss	Against 600 Ohms, in series with 2.16 ∝ f termination.
Idle Channel Noise (rcv and xmt)	< -65Bm0p. Typically < -70 dBm0p or < 20 dBrnc0 <20dBBrnc0
Interchannel Crosstalk	Typ < -75 dBm0 using 7 adjacent channels being distributed with a
	signal of 0.0 dBm0.

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

Rcv or Xmt	Overall
>35 dB	>33.9 dB
>20 dB	>27.6 dB
>25dB	>23 dB

< 600 microseconds

within boundaries of ITU-T Rec. G.712 Figure 2 >46 dB Typ > 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

Diagnostic Capabilities

A-6 System Standards and Specifications