Zhone Technologies Network Device manual 2W Port Characteristics, Sealing Current Source

Zhone Technologies, Inc. IMACS Product Book, Version 4

Table 12A—PPO and PPS Line Card Specifications (continued)

Subscriber and Central Office
Interface—Receive Channel
Level generated to 2W port with 0dB loss	0 dBm ± 0.5 Db
Level adjustment	-3 to +2 dB in 0.1 dB increments
Attenuation distortion (relative to 1 kHz)	-0.5 to +1.0 db, 400 Hz to 2800 Hz
Idle channel noise	≤ 23 dBrnC
2W Port Characteristics
Maximum connected copper loop	3000 feet, 26 gauge, non-loaded pair
Impedance	900 ohms
Return Loss, voiceband into 900Ω + 2.16 ∝ F	> 18 dB ERL, > 0 dB SRL LO, HI
Return loss, single frequency into 900Ω + 2.16 ∝ F	> 25.6 dB @ 8 kHz
Sealing Current Source
Minimum voltage at NI (display set)	15.8 V into a 38 ma sink through 3000 ft
Minimum voltage at NI (non-display set)	14.5 V into a 17 mA sink through 3000 ft
Loop length	0 to 3000 feet
Polarity	Ring lead must be negative relative to tip lead
Sealing Current Sink	<960 ohms DC resistance
8 kHz Signaling Specifications
Signaling method	ASK half duplex, carrier only present during transmission of
	information or acknowledgment
Signaling rate	1 kb/s, half duplex
Received 8kHz signal levels at 2W port	.200 to 1.5 V peak to peak
Standards Conformance
BellCore GR 1089-CORE, Section 2	ESD Protection
BellCore GR 1089 section 3 and EN 500	Radiated Emissions
81-1, Level B
BellCore GR 1089 CORE, Section 3	Conducted Emissions
BellCore GR 1089 CORE, Section 3	Immunity
FCC Part 68	Requirements for Connection of Terminal Equipment Systems
	and Protective Apparatus to the Telephone Network
FCC Part 15	Subpart B
UL 1459	Standard for Safety, Telephone Equipment
UL 1950	UL Standard for Safety of Information Technology Equipment
CE EN 500 81-1	Electromagnetic compatibility generic emission standard Part 1
	Residential, commercial and light industry
CE EN 500 82-1	Electromagnetic compatibility generic immunity standard Part 1
	Residential, commercial and light industry
CE EN 60 950/A2	Safety of information technology equipment including electrical
	business equipment

March 2001 Page 39