Nortel 600 Series Manual page 157

Table 3-M: (Continued)
QNB65B Balance Network - switch settings for 19-gauge end-section non-loaded cable without
impedance compensator at far end of cable
Length
Ft X 1000 Meters
19-21 5791-6401
21-23 6401-7010
23-25 7010-7620
25-27 7620-8230
27-29 8230-8839
29-31 8839-9449
31-33 9449-10005
33-35 10005-10068
35-36 10068-10973
Table 3-N:
QNB65B Balance Network - switch settings for 22-gauge end-section non-loaded cable without
impedance compensator at far end of cable
Length
Ft X 1000 Meters
6-7 1829-2134
7-9 2134-2743
9-11 2743-3353
11-13 3353-3962
13-15 3962-4572
15-17 4572-5182
17-19 5182-5791
19-21 5791-6401
21-23 6401-7010
23-25 7010-7620
25-27 7620-8230
27-29 8230-8839
29-31 8839-9949
31-32 9949-9754
August 2006
Resistance
R1
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.3
2
Note 1: Settings: 1 = ON, 0 = OFF
Note 2: See Figure 3-4 for information about how to set the R1 and R2
potentiometers.
Resistance
R1 R2
5 0
4.5 0
4 1.5
3.5 4
3.5 3
2.5 2
2.5 2
2.5 3
2.5 3
3 4
3 4
3 4
3 4
3 5
Note 1: Settings: 1 = ON, 0 = OFF
For Generic 602.20
Switch settings for balance networks
Capacitance
R2 Capacitance
Value (µF)
4..5 0.25
4.5 0.27
5 0.29
3 0.31
4 0.33
4 0.35
6 0.37
6 0.37
6 0.37
Capacitance
Capacitance
Value (µF)
0.17
0.19
0.19
0.19
0.19
0.19
0.19
0.23
0.23
0.25
0.25
0.27
0.27
0.29
08.01
SR Switches
1 2 3 4
0 1 0 1
0 0 1 1
0 1 1 1
0 0 0 0
0 1 0 0
0 1 0 0
0 0 1 0
0 1 1 0
0 1 1 0
SR Switches
1 2 3 4
0 1 0 0
0 0 1 0
0 0 1 0
0 0 1 0
0 0 1 0
0 0 1 0
0 0 1 0
0 0 0 1
0 0 0 1
0 1 0 1
0 1 0 1
0 0 1 1
0 0 1 1
0 1 1 1
NTP 297-3601-316
3-21
5
0
0
0
1
1
1
1
1
1
5
0
0
0
0
0
0
0
0
0
0
0
0
0
0