2N Omega Lite - Installation Manual v1.9 User Manual
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5.5. Module 1x external line/1xinternal line with 16/12 kHz tariff
pulse receivers (order No1880033/1880032)
This module is completely identical with the previous one but also contains a 16/12
kHz tariff pulse receiver (T2). The frequency and sensitivity of the receivers are set
precisely and optimally by the manufacturer. The set sensitivity is approximately -30
dB. Sensitivity can be reduced by removing jumper J1 to approximately -10 dB.
Reducing sensitivity would make sense, for example, if tariff pulses were received
from another line (cross-coupling) or in the case of strong interference (industrial
converters, high-power TV equipment etc.). The LED on the module indicates the
receipt of tariff pulses.
J1
- connector for connecting to motherboard (or to extender module
(connector is secured against incorrect connection by the blanking off
of PIN 5,6,7,8).
J2
- connector RJ-45 (PIN 4-5) for connecting analogue external line.
J3
- connector RJ-45 (PIN 4-5) for connecting analogue internal line.
J4
- company servicing reanimation connector (SW for ALTERA).
J5
- connector for setting impedance (1-2= ETSI, 2-3= 600
Ω).
D1
- signalling LED (picking up, ringing - external line).
D2
- signalling LED (picking up, ringing
– internal line).
T1
-CO transformer.
T2
-16/12 kHz transformer.
Note:
Equipment connected to connector J3 (telephone) must comply with the requirements
(standard
– type approval) for equipment connected to the unified telephone system.