Lucent Technologies FiberReach DDM-2000 - Transmission Specifications - VF Channel Units with Fixed Settings

363-206-305
Technical Specifications
10-66
Issue 3 June 2000
Table 10-29. Transmission Specifications - VF Channel Units with Fixed
Settings
Value (Measured at 25
°
C
)
Parameter POTS
SPOTS
®
Unit Coin
Loop Resistance (Beyond
the HDT excluding the set
)
0-1500
Ω
CSA Loops 0-1500
Ω
Loop Current > 20 mA > 23 mA
1,000-Hz Loss (
±
0.5dB
typical,
±
1.0dB max)
1 dB (R
EXT
≤
1,100
±
100)
* 0 dB (R
EXT
≥
1,100
±
100) *
0 dB †
Bandwidth (Relative to the
1,000-Hz loss)
0 to
−
3.0 dB at 300 Hz and 3,000 Hz
0 to
−
1.5 dB at 400 Hz and 2,800 Hz
Return Loss at the COT ‡ ERL
≥
18 dB, SRL
≥
12 dB
Return Loss at the HDT § ERL
≥
18 dB, SRL
≥
15 dB
Idle Channel Noise (at the
HDT)
20 dBrnC Maximum
Signal-to-Distortion Ratio
(at
−
10 dBm)
> 33 dB
Dial Pulse Distortion
[Peak to Average Ratio
(PAR)]
> 90
Gain Tracking (1,004 Hz)
−
37 dBm0 to
+
3 dBm0
−
50 dBm0 to
−
37 dBm0
±
0.5 dB Maximum (
±
0.25 dB Average)
±
1.0 dB Maximum (
±
0.5 dB Average)
See footnotes at end of table.
Continued on next page