Line build-out, Uild, Table 6-3. e1 line build-out – Rainbow Electronics DS26504 User Manual
Page 26: Table 6-4. t1 line build-out, 3 line build-out table 6-3. e1 line build-out
DS26504 T1/E1/J1/64KCC BITS Element
26 of 128
6.3 Line Build-Out
Table 6-3. E1 Line Build-Out
L2
PIN 13
L1
PIN 12
L0
PIN 11
APPLICATION
N
(Note 1)
RETURN
LOSS
Rt
(Note 1)
0 0 0
75Ω normal
1:2
N.M.
0
0 0 1
120Ω normal
1:2
N.M.
0
1 0 0
75Ω with high return loss (Note 2)
1:2
21dB
6.2Ω
1 0 1
120Ω with high return loss (Note 2)
1:2
21dB
11.6Ω
1 1 0
75
W normal + enable transmit and receive
gapped clock
1:2 N.M 0
1 1 1
120
W normal + enable transmit and receive
gapped clock
1:2 N.M 0
Table 6-4. T1 Line Build-Out
L2
PIN 13
L1
PIN 12
L0
PIN 11
APPLICATION
N
(Note 1)
RETURN
LOSS
Rt
(Note 1)
0
0
0
DSX-1 (0 to 133 feet)/0dB CSU
1:2
N.M.
0
0
0
1
DSX-1 (133 to 266 feet)
1:2
N.M.
0
0
1
0
DSX-1 (266 to 399 feet)
1:2
N.M.
0
0
1
1
DSX-1 (399 to 533 feet)
1:2
N.M.
0
1
0
0
DSX-1 (533 to 655 feet)
1:2
N.M.
0
1
0
1
Reserved
— — —
1
1
0
Reserved
— — —
1 1 1
DSX-1 (0 to 133ft)/0dB CSU + enable
transmit and receive gapped clock
1:2 N.M. 0
N.M. = not meaningful
Note 1: Transformer turns ratio.
Note 2: TTD pin must be connected high in this mode.