Siemens SINAUT ST7 - Signal Loss Values; Maximum Range (Km)

Mounting and Installation
© Siemens AG 2002 All Rights Reserved 6NH7811-0AA22
MD2 Modem (07/2002)
2-29
2.2.5 Signal Loss Values
Table 2-21 Signal loss values depending on transmision speed and core diameter
Loss per km (dB) for
core diameter (mm)
Transmission
speed (bps)
0.6 0.8 0.9 1.2 1.4
Loss
per LTOP
(dB)
Insertion loss per
tapping point
(dB)
Line termination with Z = 600 Ohm
1200 1.5 1.15 0.9 0.65 0.55 0.4 0.4
2400 1.85 1.4 1.1 0.75 0.6 0.4 0.2
Line termination with Z = 150 Ohm
9600 / 19200 4.3 3.2 2.6 1.8 1.5 2.0 0.2
The values listed in Table 2-21 are approximate values for non-coil-loaded
telecommunication lines of type 2 x 2 x A J-Y(St)Y (A = core diameter in mm).
2.2.6 Maximum Range (km)
Table 2-22 Maximum range depending on transmision speed and core diameter
Maximum range (km)
Send level –6 dB
*)
Send level 0 dB
*)
Transmission
speed (bps)
with LTOP
without
LTOP
with LTOP
without
LTOP
Core diameter 0.6 mm
1200 21.4 – NTP x 0.8 22 – NTP x 0.3 25.4 – NTP x 0.8 26 – NTP x 0.3
2400 17.4 – NTP x 0.6 17.8 – NTP x 0.2 20.6 – NTP x 0.6 21 – NTP x 0.2
9600 / 19200 6.7 – NTP x 1.0 7.6 – NTP x 0.1 8.1 – NTP x 1.0 9 – NTP x 0.1
Core diameter 0.8 mm
1200 28 – NTP x 1.1 28.7 – NTP x 0.4 33.2 – NTP x 1.1 33.9 – NTP x 0.4
2400 23 – NTP x 0.8 23.5 – NTP x 0.2 27.2 – NTP x 0.8 27.8 – NTP x 0.2
9600 / 19200 9.0 – NTP x 1.4 10.3 – NTP x 0.1 10.9 – NTP x 1.4 12.1 – NTP x 0.1
Core diameter 0.9 mm
1200 35.7 – NTP x 1.4 36.6 – NTP x 0.5 42.4 – NTP x 1.4 43.3 – NTP x 0.5
2400 29.2 – NTP x 1.0 30 – NTP x 0.2 34.7 – NTP x 1.0 35.4 – NTP x 0.2
9600 / 19200 11.1 – NTP x 1.7 12.6 – NTP x 0.1 13.4 – NTP x 1.7 15 – NTP x 0.1
Core diameter 1.2 mm
1200 49.5 – NTP x 1.9 50.7 – NTP x 0.7 58.7 – NTP x 1.9 60 – NTP x 0.7
2400 42.9 – NTP x 1.4 44 – NTP x 0.3 50.9 – NTP x 1.4 52 – NTP x 0.3
9600 / 19200 16.1 – NTP x 2.4 18.3 – NTP x 0.2 19.4 – NTP x 2.4 21.6 – NTP x 0.2
Core diameter 1.4 mm
1200 58.5– NTP x 2.2 60 – NTP x 0.8 69.4 – NTP x 2.2 70.9 – NTP x 0.8
2400 53.6 – NTP x 1.7 55 – NTP x 0.4 63.6 – NTP x 1.7 65 – NTP x 0.4
9600 / 19200 19.3 – NTP x 2.9 22 – NTP x 0.2 23.3 – NTP x 2.9 26 – NTP x 0.2
NTP = number of tapping points
*) not permitted on telecom leased lines. Set send level to –9 dB.