Lnc Supply - Loewe Q2500B Serviceanleitung

Technology of Q 2500 colour TV set

3.4.5 LNC supply

The components for LNC supply located on
the Sat 6 unit or optionally on the DVB mod-
ule. The control of the circuit on Sat 6 is by
DVB operation via the IIC bus and a free port
(DISEqCWR) of the DVB decoder/ controller
chip STi5500. In TV operation the TV control-
ler assumes control of the Sat 6 unit. This
achieves better decoupling of the software
module.
Parameter
LNC voltages
LNC current
Current limitation
22 kHz signal
Amplitude pf 22 kHz signal
Duty cycle
DISEqC version
Document Q 2500
Value
0/14/18 V
max. 400 mA
Electronic
yes (modular)
1 Vss
(50 +/- 10) %
1.0 and partially 1.1
59
Note
Write only
© Loewe ProCollege