Section 365–001–201
8
Figure 4. 3650–01/03 ETO w/LC Options
Table 2. 3650–01/03 ETO w/LC Option Description
Option
Function/Remarks
Position
J2
Jack for mounting an optional transmit post-equalizer (3691–00/01).
See documentation
for 3691–00/01
J3
Jack for mounting optional compensation network/PBN 3690–00/10,
–01/11, –02/12, or –03/13.
See documentation
for 3690–XX
J4
Jack for mounting an optional receive pre-equalizer 3691–00/01
See documentation
for 3691–00/01
XMT ATTEN Eight push-on jumpers (0.1, 0.2, 0.4, 0.8, 1, 2, 4, 8) total 16.5 dB of trans-
mit attenuation when all jumpers are in the IN position.
See part 7.4
RCV ATTEN Eight push-on jumpers (0.1, 0.2, 0.4, 0.8, 1, 2, 4, 8) total 16.5 dB of re-
ceive attenuation when all jumpers are in the IN position.
See part 7.5
A
Set to the OPEN position if jack J3 is equipped or if an external PBN/BOC
is used.
Open/Closed
AC, BC, JC
For external sealing current at pins 7 and 8 (or no SC) open JC, AC, and
BC. For looping sealing current from the 2W line, close JC and open AC
and BC. For supplying –48 VDC sealing current to the 2W line, open JC
and close AC and BC.
Open/Closed
Y
1 lead/2 lead floating dry contact closure during trunk processing.
Ground on 1 lead during trunk processing.
Open
Closed
XC
Full 8-bit encoding.
7 5/6 bit encoding.
Open
Closed
YC
Full 8-bit encoding.
7 5/6 bit encoding.
Open
Closed
Screw option Y conditions the 1 and 2 leads for the proper trunk or switching system interface. For a dry-contact
closure of the 1 and 2 leads during trunk processing, open screw Y. For a ground on the 1 lead (pin 2) during
trunk processing, close option Y.
